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Scala Runner specification

This document describes proposed specification for Scala runner based on Scala CLI documentation as requested per SIP-46

Commands and options are marked with MUST and SHOULD (in the RFC style) for ones applicable for Scala Runner. Options and commands marked as Implementation are needed for smooth running of Scala CLI. We recommend for those options and commands to be supported by the scala command (when based on Scala CLI) but not to be a part of the Scala Runner specification.

The proposed Scala runner specification should also contain supported Using directives defined in the dedicated document]

Scalac options forwarding

All options that start with:

  • -g
  • -language
  • -opt
  • -P
  • -target
  • -V
  • -W
  • -X
  • -Y

are assumed to be Scala compiler options and will be propagated to Scala Compiler. This applies to all commands that uses compiler directly or indirectly.

Scalac options that are directly supported in scala CLI (so can be provided as is, without any prefixes etc.):

  • -encoding
  • -release
  • -color
  • -nowarn
  • -feature
  • -deprecation
  • -indent
  • -no-indent
  • -unchecked
  • -rewrite
  • -old-syntax
  • -new-syntax

MUST have commands

compile command

MUST have for Scala Runner specification.

Compile Scala code.

Specific compile configurations can be specified with both command line options and using directives defined in sources. Command line options always take priority over using directives when a clash occurs, allowing to override configurations defined in sources. Using directives can be defined in all supported input source file types.

Multiple inputs can be passed at once. Paths to directories, URLs and supported file types are accepted as inputs. Accepted file extensions: .scala, .sc, .java, .jar, .md, .jar, .c, .h, .zip For piped inputs use the corresponding alias: _.scala, _.java, _.sc, _.md All supported types of inputs can be mixed with each other.

For detailed documentation refer to our website: https://scala-cli.virtuslab.org/docs/commands/compile

MUST have options

--power

Allows to use restricted & experimental features

--dependency

Add dependencies

Aliases: --dep

--compile-only-dependency

Add compile-only dependencies

Aliases: --compile-dep ,--compile-lib

--compiler-plugin

Add compiler plugin dependencies

Aliases: -P ,--plugin

--scala-version

Set the Scala version (3.4.1 by default)

Aliases: -S ,--scala

--scala-binary-version

Set the Scala binary version

Aliases: -B ,--scala-binary ,--scala-bin

--extra-jars

Add extra JARs and compiled classes to the class path

Aliases: --jar ,--jars ,--extra-jar ,--class ,--extra-class ,--classes ,--extra-classes ,-classpath ,-cp ,--classpath ,--class-path ,--extra-class-path

--resource-dirs

Add a resource directory

Aliases: --resource-dir

--with-compiler

Allows to include the Scala compiler artifacts on the classpath.

Aliases: --with-scala-compiler ,-with-compiler

--compilation-output

Copy compilation results to output directory using either relative or absolute path

Aliases: -d ,--output-directory ,--destination ,--compile-output ,--compile-out

SHOULD have options

--js

Enable Scala.js. To show more options for Scala.js pass --help-js

--js-version

The Scala.js version (1.16.0 by default).

--js-mode

The Scala.js mode, for fastLinkJS use one of [dev, fastLinkJS or fast], for fullLinkJS use one of [release, fullLinkJS, full]

--js-module-kind

The Scala.js module kind: commonjs/common, esmodule/es, nomodule/none

--js-check-ir

--js-emit-source-maps

Emit source maps

--js-source-maps-path

Set the destination path of source maps

--js-dom

Enable jsdom

--js-header

A header that will be added at the top of generated .js files

--js-es-version

The Scala.js ECMA Script version: es5_1, es2015, es2016, es2017, es2018, es2019, es2020, es2021

--native

Enable Scala Native. To show more options for Scala Native pass --help-native

--native-version

Set the Scala Native version (0.5.1 by default).

--native-mode

Set Scala Native compilation mode

--native-lto

Link-time optimisation mode

--native-gc

Set the Scala Native garbage collector

--native-linking

Extra options passed to clang verbatim during linking

--native-compile

List of compile options

--native-target

Build target type

--embed-resources

Embed resources into the Scala Native binary (can be read with the Java resources API)

--repository

Add repositories for dependency resolution.

Accepts predefined repositories supported by Coursier (like sonatype:snapshots or m2Local) or a URL of the root of Maven repository

Aliases: -r ,--repo

--debug

Turn debugging on

--debug-port

Debug port (5005 by default)

--debug-mode

Debug mode (attach by default)

--java-home

Set the Java home directory

--jvm

Use a specific JVM, such as 14, adopt:11, or graalvm:21, or system

Aliases: -j

--javac-plugin

Javac plugin dependencies or files

--javac-option

Javac options

Aliases: --javac-opt

--script-snippet

Allows to execute a passed string as a Scala script

--execute-script

A synonym to --script-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

Aliases: -e ,--execute-scala-script ,--execute-sc

--scala-snippet

Allows to execute a passed string as Scala code

--extra-compile-only-jars

Add extra JARs in the compilaion class path. Mainly using to run code in managed environments like Spark not to include certain depenencies on runtime ClassPath.

Aliases: --compile-only-jar ,--compile-only-jars ,--extra-compile-only-jar

--extra-source-jars

Add extra source JARs

Aliases: --source-jar ,--source-jars ,--extra-source-jar

--platform

Specify platform

--semantic-db

Generate SemanticDBs

Aliases: --semanticdb

--semantic-db-target-root

SemanticDB target root (default to the compiled classes destination directory)

Aliases: --semanticdb-target-root ,--semanticdb-targetroot

--semantic-db-source-root

SemanticDB source root (default to the project root directory)

Aliases: --semanticdb-source-root ,--semanticdb-sourceroot

--watch

Run the application in the background, automatically wake the thread and re-run if sources have been changed

Aliases: -w

--restart

Run the application in the background, automatically kill the process and restart if sources have been changed

Aliases: --revolver

--print-class-path

Print the resulting class path

Aliases: -p ,--print-classpath

--test

Compile test scope

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--suppress-directives-in-multiple-files-warning

Suppress warnings about using directives in multiple files

Aliases: --suppress-warning-directives-in-multiple-files

--suppress-outdated-dependency-warning

Suppress warnings about outdated dependencies in project

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--js-no-opt

Disable optimalisation for Scala.js, overrides --js-mode

--js-allow-big-ints-for-longs

Primitive Longs may be compiled as primitive JavaScript bigints

--js-avoid-classes

Avoid class'es when using functions and prototypes has the same observable semantics.

--js-avoid-lets-and-consts

Avoid lets and consts when using vars has the same observable semantics.

--js-module-split-style

The Scala.js module split style: fewestmodules, smallestmodules, smallmodulesfor

--js-small-module-for-package

Create as many small modules as possible for the classes in the passed packages and their subpackages.

--js-linker-path

Path to the Scala.js linker

--js-cli-version

Scala.js CLI version to use for linking (1.16.0 by default).

--js-cli-java-arg

Scala.js CLI Java options

--js-cli-on-jvm

Whether to run the Scala.js CLI on the JVM or using a native executable

--native-clang

Path to the Clang command

--native-clangpp

Path to the Clang++ command

--native-linking-defaults

Use default linking settings

--native-compile-defaults

Use default compile options

--bloop-bsp-protocol

Protocol to use to open a BSP connection with Bloop

--bloop-bsp-socket

Socket file to use to open a BSP connection with Bloop

--bloop-host

Host the compilation server should bind to

--bloop-port

Port the compilation server should bind to (pass -1 to pick a random port)

--bloop-daemon-dir

Daemon directory of the Bloop daemon (directory with lock, pid, and socket files)

--bloop-version

If Bloop isn't already running, the version we should start

--bloop-bsp-timeout

Maximum duration to wait for the BSP connection to be opened

--bloop-bsp-check-period

Duration between checks of the BSP connection state

--bloop-startup-timeout

Maximum duration to wait for the compilation server to start up

--bloop-default-java-opts

Include default JVM options for Bloop

--bloop-java-opt

Pass java options to use by Bloop server

--bloop-global-options-file

Bloop global options file

--bloop-jvm

JVM to use to start Bloop (e.g. 'system|11', 'temurin:17', …)

--bloop-working-dir

Working directory for Bloop, if it needs to be started

--server

Enable / disable usage of Bloop compilation server. Bloop is used by default so use --server=false to disable it. Disabling compilation server allows to test compilation in more controlled mannter (no caching or incremental compiler) but has a detrimental effect of performance.

--scalac-option

Add a scalac option. Note that options starting with -g, -language, -opt, -P, -target, -V, -W, -X, and -Y are assumed to be Scala compiler options and don't require to be passed after -O or --scalac-option.

Aliases: --scala-opt ,-O ,--scala-option

--jvm-index

JVM index URL

--jvm-index-os

Operating system to use when looking up in the JVM index

--jvm-index-arch

CPU architecture to use when looking up in the JVM index

--bsp-debug-port

Port for BSP debugging

--ttl

Specify a TTL for changing dependencies, such as snapshots

--cache

Set the coursier cache location

--coursier-validate-checksums

Enable checksum validation of artifacts downloaded by coursier

--workspace

Directory where .scala-build is written

--scalac-help

Show help for scalac. This is an alias for --scalac-option -help

Aliases: --help-scalac

--scalac-verbose

Turn verbosity on for scalac. This is an alias for --scalac-option -verbose

Aliases: --verbose-scalac

--execute-scala

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--java-snippet

Allows to execute a passed string as Java code

--execute-java

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--scala-library

--java

Do not add dependency to Scala Standard library. This is useful, when Scala CLI works with pure Java projects.

--runner

Should include Scala CLI runner on the runtime ClassPath. Runner is added by default for application running on JVM using standard Scala versions. Runner is used to make stack traces more readable in case of application failure.

--default-forbidden-directories

--forbid

--help-js

Show options for ScalaJS

--help-native

Show options for ScalaNative

--help-scaladoc

Show options for Scaladoc

Aliases: --help-doc ,--scaladoc-help ,--doc-help

--help-repl

Show options for Scala REPL

Aliases: --repl-help

--help-scalafmt

Show options for Scalafmt

Aliases: --help-fmt ,--scalafmt-help ,--fmt-help

--strict-bloop-json-check

--with-toolkit

Add toolkit to classPath (not supported in Scala 2.12), 'default' version for Scala toolkit: 0.2.1, 'default' version for typelevel toolkit: 0.1.23

Aliases: --toolkit

--exclude

Exclude sources


config command

MUST have for Scala Runner specification.

Configure global settings for Scala CLI.

Syntax:

  scala-cli config key value

For example, to globally set the interactive mode:

  scala-cli config interactive true

Available keys:

  • actions Globally enables actionable diagnostics. Enabled by default.
  • github.token GitHub token.
  • httpProxy.address HTTP proxy address.
  • httpProxy.password HTTP proxy password (used for authentication).
  • httpProxy.user HTTP proxy user (used for authentication).
  • interactive Globally enables interactive mode (the '--interactive' flag).
  • interactive-was-suggested Setting indicating if the global interactive mode was already suggested.
  • java.properties Java properties for Scala CLI's execution.
  • pgp.public-key The PGP public key, used for signing.
  • pgp.secret-key The PGP secret key, used for signing.
  • pgp.secret-key-password The PGP secret key password, used for signing.
  • power Globally enables power mode (the '--power' launcher flag).
  • publish.credentials Publishing credentials, syntax: repositoryAddress value:user value:password [realm]
  • publish.user.email The 'email' user detail, used for publishing.
  • publish.user.name The 'name' user detail, used for publishing.
  • publish.user.url The 'url' user detail, used for publishing.
  • repositories.credentials Repository credentials, syntax: repositoryAddress value:user value:password [realm]
  • repositories.default Default repository, syntax: https://first-repo.company.com https://second-repo.company.com
  • repositories.mirrors Repository mirrors, syntax: repositories.mirrors maven:*=https://repository.company.com/maven
  • suppress-warning.directives-in-multiple-files Globally suppresses warnings about directives declared in multiple source files.
  • suppress-warning.experimental-features Globally suppresses warnings about experimental features.
  • suppress-warning.outdated-dependencies-files Globally suppresses warnings about outdated dependencies.

For detailed documentation refer to our website: https://scala-cli.virtuslab.org/docs/commands/config

MUST have options

--power

Allows to use restricted & experimental features

SHOULD have options

--debug

Turn debugging on

--debug-port

Debug port (5005 by default)

--debug-mode

Debug mode (attach by default)

--java-home

Set the Java home directory

--jvm

Use a specific JVM, such as 14, adopt:11, or graalvm:21, or system

Aliases: -j

--javac-plugin

Javac plugin dependencies or files

--javac-option

Javac options

Aliases: --javac-opt

--unset

Remove an entry from config

Aliases: --remove

--force

Force overwriting values for key

Aliases: -f

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--ttl

Specify a TTL for changing dependencies, such as snapshots

--cache

Set the coursier cache location

--coursier-validate-checksums

Enable checksum validation of artifacts downloaded by coursier

--jvm-index

JVM index URL

--jvm-index-os

Operating system to use when looking up in the JVM index

--jvm-index-arch

CPU architecture to use when looking up in the JVM index

--bsp-debug-port

Port for BSP debugging

--dump

Dump config DB as JSON


doc command

MUST have for Scala Runner specification.

Generate Scaladoc documentation.

Multiple inputs can be passed at once. Paths to directories, URLs and supported file types are accepted as inputs. Accepted file extensions: .scala, .sc, .java, .jar, .md, .jar, .c, .h, .zip For piped inputs use the corresponding alias: _.scala, _.java, _.sc, _.md All supported types of inputs can be mixed with each other.

For detailed documentation refer to our website: https://scala-cli.virtuslab.org/docs/commands/doc

MUST have options

--power

Allows to use restricted & experimental features

--dependency

Add dependencies

Aliases: --dep

--compile-only-dependency

Add compile-only dependencies

Aliases: --compile-dep ,--compile-lib

--compiler-plugin

Add compiler plugin dependencies

Aliases: -P ,--plugin

--scala-version

Set the Scala version (3.4.1 by default)

Aliases: -S ,--scala

--scala-binary-version

Set the Scala binary version

Aliases: -B ,--scala-binary ,--scala-bin

--extra-jars

Add extra JARs and compiled classes to the class path

Aliases: --jar ,--jars ,--extra-jar ,--class ,--extra-class ,--classes ,--extra-classes ,-classpath ,-cp ,--classpath ,--class-path ,--extra-class-path

--resource-dirs

Add a resource directory

Aliases: --resource-dir

--with-compiler

Allows to include the Scala compiler artifacts on the classpath.

Aliases: --with-scala-compiler ,-with-compiler

--compilation-output

Copy compilation results to output directory using either relative or absolute path

Aliases: -d ,--output-directory ,--destination ,--compile-output ,--compile-out

--output

Set the destination path

Aliases: -o

--force

Overwrite the destination directory, if it exists

Aliases: -f

SHOULD have options

--js

Enable Scala.js. To show more options for Scala.js pass --help-js

--js-version

The Scala.js version (1.16.0 by default).

--js-mode

The Scala.js mode, for fastLinkJS use one of [dev, fastLinkJS or fast], for fullLinkJS use one of [release, fullLinkJS, full]

--js-module-kind

The Scala.js module kind: commonjs/common, esmodule/es, nomodule/none

--js-check-ir

--js-emit-source-maps

Emit source maps

--js-source-maps-path

Set the destination path of source maps

--js-dom

Enable jsdom

--js-header

A header that will be added at the top of generated .js files

--js-es-version

The Scala.js ECMA Script version: es5_1, es2015, es2016, es2017, es2018, es2019, es2020, es2021

--native

Enable Scala Native. To show more options for Scala Native pass --help-native

--native-version

Set the Scala Native version (0.5.1 by default).

--native-mode

Set Scala Native compilation mode

--native-lto

Link-time optimisation mode

--native-gc

Set the Scala Native garbage collector

--native-linking

Extra options passed to clang verbatim during linking

--native-compile

List of compile options

--native-target

Build target type

--embed-resources

Embed resources into the Scala Native binary (can be read with the Java resources API)

--repository

Add repositories for dependency resolution.

Accepts predefined repositories supported by Coursier (like sonatype:snapshots or m2Local) or a URL of the root of Maven repository

Aliases: -r ,--repo

--debug

Turn debugging on

--debug-port

Debug port (5005 by default)

--debug-mode

Debug mode (attach by default)

--java-home

Set the Java home directory

--jvm

Use a specific JVM, such as 14, adopt:11, or graalvm:21, or system

Aliases: -j

--javac-plugin

Javac plugin dependencies or files

--javac-option

Javac options

Aliases: --javac-opt

--script-snippet

Allows to execute a passed string as a Scala script

--execute-script

A synonym to --script-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

Aliases: -e ,--execute-scala-script ,--execute-sc

--scala-snippet

Allows to execute a passed string as Scala code

--extra-compile-only-jars

Add extra JARs in the compilaion class path. Mainly using to run code in managed environments like Spark not to include certain depenencies on runtime ClassPath.

Aliases: --compile-only-jar ,--compile-only-jars ,--extra-compile-only-jar

--extra-source-jars

Add extra source JARs

Aliases: --source-jar ,--source-jars ,--extra-source-jar

--platform

Specify platform

--semantic-db

Generate SemanticDBs

Aliases: --semanticdb

--semantic-db-target-root

SemanticDB target root (default to the compiled classes destination directory)

Aliases: --semanticdb-target-root ,--semanticdb-targetroot

--semantic-db-source-root

SemanticDB source root (default to the project root directory)

Aliases: --semanticdb-source-root ,--semanticdb-sourceroot

--default-scaladoc-options

Control if Scala CLI should use default options for scaladoc, true by default. Use --default-scaladoc-opts:false to not include default options.

Aliases: --default-scaladoc-opts

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--suppress-directives-in-multiple-files-warning

Suppress warnings about using directives in multiple files

Aliases: --suppress-warning-directives-in-multiple-files

--suppress-outdated-dependency-warning

Suppress warnings about outdated dependencies in project

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--js-no-opt

Disable optimalisation for Scala.js, overrides --js-mode

--js-allow-big-ints-for-longs

Primitive Longs may be compiled as primitive JavaScript bigints

--js-avoid-classes

Avoid class'es when using functions and prototypes has the same observable semantics.

--js-avoid-lets-and-consts

Avoid lets and consts when using vars has the same observable semantics.

--js-module-split-style

The Scala.js module split style: fewestmodules, smallestmodules, smallmodulesfor

--js-small-module-for-package

Create as many small modules as possible for the classes in the passed packages and their subpackages.

--js-linker-path

Path to the Scala.js linker

--js-cli-version

Scala.js CLI version to use for linking (1.16.0 by default).

--js-cli-java-arg

Scala.js CLI Java options

--js-cli-on-jvm

Whether to run the Scala.js CLI on the JVM or using a native executable

--native-clang

Path to the Clang command

--native-clangpp

Path to the Clang++ command

--native-linking-defaults

Use default linking settings

--native-compile-defaults

Use default compile options

--bloop-bsp-protocol

Protocol to use to open a BSP connection with Bloop

--bloop-bsp-socket

Socket file to use to open a BSP connection with Bloop

--bloop-host

Host the compilation server should bind to

--bloop-port

Port the compilation server should bind to (pass -1 to pick a random port)

--bloop-daemon-dir

Daemon directory of the Bloop daemon (directory with lock, pid, and socket files)

--bloop-version

If Bloop isn't already running, the version we should start

--bloop-bsp-timeout

Maximum duration to wait for the BSP connection to be opened

--bloop-bsp-check-period

Duration between checks of the BSP connection state

--bloop-startup-timeout

Maximum duration to wait for the compilation server to start up

--bloop-default-java-opts

Include default JVM options for Bloop

--bloop-java-opt

Pass java options to use by Bloop server

--bloop-global-options-file

Bloop global options file

--bloop-jvm

JVM to use to start Bloop (e.g. 'system|11', 'temurin:17', …)

--bloop-working-dir

Working directory for Bloop, if it needs to be started

--server

Enable / disable usage of Bloop compilation server. Bloop is used by default so use --server=false to disable it. Disabling compilation server allows to test compilation in more controlled mannter (no caching or incremental compiler) but has a detrimental effect of performance.

--scalac-option

Add a scalac option. Note that options starting with -g, -language, -opt, -P, -target, -V, -W, -X, and -Y are assumed to be Scala compiler options and don't require to be passed after -O or --scalac-option.

Aliases: --scala-opt ,-O ,--scala-option

--jvm-index

JVM index URL

--jvm-index-os

Operating system to use when looking up in the JVM index

--jvm-index-arch

CPU architecture to use when looking up in the JVM index

--bsp-debug-port

Port for BSP debugging

--ttl

Specify a TTL for changing dependencies, such as snapshots

--cache

Set the coursier cache location

--coursier-validate-checksums

Enable checksum validation of artifacts downloaded by coursier

--workspace

Directory where .scala-build is written

--scalac-help

Show help for scalac. This is an alias for --scalac-option -help

Aliases: --help-scalac

--scalac-verbose

Turn verbosity on for scalac. This is an alias for --scalac-option -verbose

Aliases: --verbose-scalac

--execute-scala

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--java-snippet

Allows to execute a passed string as Java code

--execute-java

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--scala-library

--java

Do not add dependency to Scala Standard library. This is useful, when Scala CLI works with pure Java projects.

--runner

Should include Scala CLI runner on the runtime ClassPath. Runner is added by default for application running on JVM using standard Scala versions. Runner is used to make stack traces more readable in case of application failure.

--default-forbidden-directories

--forbid

--help-js

Show options for ScalaJS

--help-native

Show options for ScalaNative

--help-scaladoc

Show options for Scaladoc

Aliases: --help-doc ,--scaladoc-help ,--doc-help

--help-repl

Show options for Scala REPL

Aliases: --repl-help

--help-scalafmt

Show options for Scalafmt

Aliases: --help-fmt ,--scalafmt-help ,--fmt-help

--strict-bloop-json-check

--with-toolkit

Add toolkit to classPath (not supported in Scala 2.12), 'default' version for Scala toolkit: 0.2.1, 'default' version for typelevel toolkit: 0.1.23

Aliases: --toolkit

--exclude

Exclude sources


repl command

MUST have for Scala Runner specification.

Aliases: console

Fire-up a Scala REPL.

The entire Scala CLI project's classpath is loaded to the repl.

Specific repl configurations can be specified with both command line options and using directives defined in sources. Command line options always take priority over using directives when a clash occurs, allowing to override configurations defined in sources. Using directives can be defined in all supported input source file types.

Multiple inputs can be passed at once. Paths to directories, URLs and supported file types are accepted as inputs. Accepted file extensions: .scala, .sc, .java, .jar, .md, .jar, .c, .h, .zip For piped inputs use the corresponding alias: _.scala, _.java, _.sc, _.md All supported types of inputs can be mixed with each other.

For detailed documentation refer to our website: https://scala-cli.virtuslab.org/docs/commands/repl

MUST have options

--power

Allows to use restricted & experimental features

--dependency

Add dependencies

Aliases: --dep

--compile-only-dependency

Add compile-only dependencies

Aliases: --compile-dep ,--compile-lib

--compiler-plugin

Add compiler plugin dependencies

Aliases: -P ,--plugin

--scala-version

Set the Scala version (3.4.1 by default)

Aliases: -S ,--scala

--scala-binary-version

Set the Scala binary version

Aliases: -B ,--scala-binary ,--scala-bin

--extra-jars

Add extra JARs and compiled classes to the class path

Aliases: --jar ,--jars ,--extra-jar ,--class ,--extra-class ,--classes ,--extra-classes ,-classpath ,-cp ,--classpath ,--class-path ,--extra-class-path

--resource-dirs

Add a resource directory

Aliases: --resource-dir

--with-compiler

Allows to include the Scala compiler artifacts on the classpath.

Aliases: --with-scala-compiler ,-with-compiler

--compilation-output

Copy compilation results to output directory using either relative or absolute path

Aliases: -d ,--output-directory ,--destination ,--compile-output ,--compile-out

--java-opt

Set Java options, such as -Xmx1g

Aliases: -J

SHOULD have options

--js

Enable Scala.js. To show more options for Scala.js pass --help-js

--js-version

The Scala.js version (1.16.0 by default).

--js-mode

The Scala.js mode, for fastLinkJS use one of [dev, fastLinkJS or fast], for fullLinkJS use one of [release, fullLinkJS, full]

--js-module-kind

The Scala.js module kind: commonjs/common, esmodule/es, nomodule/none

--js-check-ir

--js-emit-source-maps

Emit source maps

--js-source-maps-path

Set the destination path of source maps

--js-dom

Enable jsdom

--js-header

A header that will be added at the top of generated .js files

--js-es-version

The Scala.js ECMA Script version: es5_1, es2015, es2016, es2017, es2018, es2019, es2020, es2021

--native

Enable Scala Native. To show more options for Scala Native pass --help-native

--native-version

Set the Scala Native version (0.5.1 by default).

--native-mode

Set Scala Native compilation mode

--native-lto

Link-time optimisation mode

--native-gc

Set the Scala Native garbage collector

--native-linking

Extra options passed to clang verbatim during linking

--native-compile

List of compile options

--native-target

Build target type

--embed-resources

Embed resources into the Scala Native binary (can be read with the Java resources API)

--repository

Add repositories for dependency resolution.

Accepts predefined repositories supported by Coursier (like sonatype:snapshots or m2Local) or a URL of the root of Maven repository

Aliases: -r ,--repo

--debug

Turn debugging on

--debug-port

Debug port (5005 by default)

--debug-mode

Debug mode (attach by default)

--java-home

Set the Java home directory

--jvm

Use a specific JVM, such as 14, adopt:11, or graalvm:21, or system

Aliases: -j

--javac-plugin

Javac plugin dependencies or files

--javac-option

Javac options

Aliases: --javac-opt

--script-snippet

Allows to execute a passed string as a Scala script

--execute-script

A synonym to --script-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

Aliases: -e ,--execute-scala-script ,--execute-sc

--scala-snippet

Allows to execute a passed string as Scala code

--extra-compile-only-jars

Add extra JARs in the compilaion class path. Mainly using to run code in managed environments like Spark not to include certain depenencies on runtime ClassPath.

Aliases: --compile-only-jar ,--compile-only-jars ,--extra-compile-only-jar

--extra-source-jars

Add extra source JARs

Aliases: --source-jar ,--source-jars ,--extra-source-jar

--platform

Specify platform

--semantic-db

Generate SemanticDBs

Aliases: --semanticdb

--semantic-db-target-root

SemanticDB target root (default to the compiled classes destination directory)

Aliases: --semanticdb-target-root ,--semanticdb-targetroot

--semantic-db-source-root

SemanticDB source root (default to the project root directory)

Aliases: --semanticdb-source-root ,--semanticdb-sourceroot

--watch

Run the application in the background, automatically wake the thread and re-run if sources have been changed

Aliases: -w

--restart

Run the application in the background, automatically kill the process and restart if sources have been changed

Aliases: --revolver

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--suppress-directives-in-multiple-files-warning

Suppress warnings about using directives in multiple files

Aliases: --suppress-warning-directives-in-multiple-files

--suppress-outdated-dependency-warning

Suppress warnings about outdated dependencies in project

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--js-no-opt

Disable optimalisation for Scala.js, overrides --js-mode

--js-allow-big-ints-for-longs

Primitive Longs may be compiled as primitive JavaScript bigints

--js-avoid-classes

Avoid class'es when using functions and prototypes has the same observable semantics.

--js-avoid-lets-and-consts

Avoid lets and consts when using vars has the same observable semantics.

--js-module-split-style

The Scala.js module split style: fewestmodules, smallestmodules, smallmodulesfor

--js-small-module-for-package

Create as many small modules as possible for the classes in the passed packages and their subpackages.

--js-linker-path

Path to the Scala.js linker

--js-cli-version

Scala.js CLI version to use for linking (1.16.0 by default).

--js-cli-java-arg

Scala.js CLI Java options

--js-cli-on-jvm

Whether to run the Scala.js CLI on the JVM or using a native executable

--native-clang

Path to the Clang command

--native-clangpp

Path to the Clang++ command

--native-linking-defaults

Use default linking settings

--native-compile-defaults

Use default compile options

--bloop-bsp-protocol

Protocol to use to open a BSP connection with Bloop

--bloop-bsp-socket

Socket file to use to open a BSP connection with Bloop

--bloop-host

Host the compilation server should bind to

--bloop-port

Port the compilation server should bind to (pass -1 to pick a random port)

--bloop-daemon-dir

Daemon directory of the Bloop daemon (directory with lock, pid, and socket files)

--bloop-version

If Bloop isn't already running, the version we should start

--bloop-bsp-timeout

Maximum duration to wait for the BSP connection to be opened

--bloop-bsp-check-period

Duration between checks of the BSP connection state

--bloop-startup-timeout

Maximum duration to wait for the compilation server to start up

--bloop-default-java-opts

Include default JVM options for Bloop

--bloop-java-opt

Pass java options to use by Bloop server

--bloop-global-options-file

Bloop global options file

--bloop-jvm

JVM to use to start Bloop (e.g. 'system|11', 'temurin:17', …)

--bloop-working-dir

Working directory for Bloop, if it needs to be started

--server

Enable / disable usage of Bloop compilation server. Bloop is used by default so use --server=false to disable it. Disabling compilation server allows to test compilation in more controlled mannter (no caching or incremental compiler) but has a detrimental effect of performance.

--scalac-option

Add a scalac option. Note that options starting with -g, -language, -opt, -P, -target, -V, -W, -X, and -Y are assumed to be Scala compiler options and don't require to be passed after -O or --scalac-option.

Aliases: --scala-opt ,-O ,--scala-option

--jvm-index

JVM index URL

--jvm-index-os

Operating system to use when looking up in the JVM index

--jvm-index-arch

CPU architecture to use when looking up in the JVM index

--bsp-debug-port

Port for BSP debugging

--ttl

Specify a TTL for changing dependencies, such as snapshots

--cache

Set the coursier cache location

--coursier-validate-checksums

Enable checksum validation of artifacts downloaded by coursier

--workspace

Directory where .scala-build is written

--scalac-help

Show help for scalac. This is an alias for --scalac-option -help

Aliases: --help-scalac

--scalac-verbose

Turn verbosity on for scalac. This is an alias for --scalac-option -verbose

Aliases: --verbose-scalac

--execute-scala

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--java-snippet

Allows to execute a passed string as Java code

--execute-java

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--scala-library

--java

Do not add dependency to Scala Standard library. This is useful, when Scala CLI works with pure Java projects.

--runner

Should include Scala CLI runner on the runtime ClassPath. Runner is added by default for application running on JVM using standard Scala versions. Runner is used to make stack traces more readable in case of application failure.

--default-forbidden-directories

--forbid

--help-js

Show options for ScalaJS

--help-native

Show options for ScalaNative

--help-scaladoc

Show options for Scaladoc

Aliases: --help-doc ,--scaladoc-help ,--doc-help

--help-repl

Show options for Scala REPL

Aliases: --repl-help

--help-scalafmt

Show options for Scalafmt

Aliases: --help-fmt ,--scalafmt-help ,--fmt-help

--strict-bloop-json-check

--with-toolkit

Add toolkit to classPath (not supported in Scala 2.12), 'default' version for Scala toolkit: 0.2.1, 'default' version for typelevel toolkit: 0.1.23

Aliases: --toolkit

--exclude

Exclude sources

--java-prop-option

Add java properties. Note that options equal -Dproperty=value are assumed to be java properties and don't require to be passed after --java-prop.

Aliases: --java-prop

--repl-dry-run

Don't actually run the REPL, just fetch it


run command

MUST have for Scala Runner specification.

Compile and run Scala code.

Specific run configurations can be specified with both command line options and using directives defined in sources. Command line options always take priority over using directives when a clash occurs, allowing to override configurations defined in sources. Using directives can be defined in all supported input source file types.

For a run to be successful, a main method must be present on the classpath. .sc scripts are an exception, as a main class is provided in their wrapper.

Multiple inputs can be passed at once. Paths to directories, URLs and supported file types are accepted as inputs. Accepted file extensions: .scala, .sc, .java, .jar, .md, .jar, .c, .h, .zip For piped inputs use the corresponding alias: _.scala, _.java, _.sc, _.md All supported types of inputs can be mixed with each other.

To pass arguments to the actual application, just add them after --, like:

  scala-cli run Main.scala AnotherSource.scala -- first-arg second-arg

For detailed documentation refer to our website: https://scala-cli.virtuslab.org/docs/commands/run

MUST have options

--power

Allows to use restricted & experimental features

--dependency

Add dependencies

Aliases: --dep

--compile-only-dependency

Add compile-only dependencies

Aliases: --compile-dep ,--compile-lib

--compiler-plugin

Add compiler plugin dependencies

Aliases: -P ,--plugin

--scala-version

Set the Scala version (3.4.1 by default)

Aliases: -S ,--scala

--scala-binary-version

Set the Scala binary version

Aliases: -B ,--scala-binary ,--scala-bin

--extra-jars

Add extra JARs and compiled classes to the class path

Aliases: --jar ,--jars ,--extra-jar ,--class ,--extra-class ,--classes ,--extra-classes ,-classpath ,-cp ,--classpath ,--class-path ,--extra-class-path

--resource-dirs

Add a resource directory

Aliases: --resource-dir

--with-compiler

Allows to include the Scala compiler artifacts on the classpath.

Aliases: --with-scala-compiler ,-with-compiler

--compilation-output

Copy compilation results to output directory using either relative or absolute path

Aliases: -d ,--output-directory ,--destination ,--compile-output ,--compile-out

--java-opt

Set Java options, such as -Xmx1g

Aliases: -J

--main-class

Specify which main class to run

Aliases: -M

SHOULD have options

--js

Enable Scala.js. To show more options for Scala.js pass --help-js

--js-version

The Scala.js version (1.16.0 by default).

--js-mode

The Scala.js mode, for fastLinkJS use one of [dev, fastLinkJS or fast], for fullLinkJS use one of [release, fullLinkJS, full]

--js-module-kind

The Scala.js module kind: commonjs/common, esmodule/es, nomodule/none

--js-check-ir

--js-emit-source-maps

Emit source maps

--js-source-maps-path

Set the destination path of source maps

--js-dom

Enable jsdom

--js-header

A header that will be added at the top of generated .js files

--js-es-version

The Scala.js ECMA Script version: es5_1, es2015, es2016, es2017, es2018, es2019, es2020, es2021

--native

Enable Scala Native. To show more options for Scala Native pass --help-native

--native-version

Set the Scala Native version (0.5.1 by default).

--native-mode

Set Scala Native compilation mode

--native-lto

Link-time optimisation mode

--native-gc

Set the Scala Native garbage collector

--native-linking

Extra options passed to clang verbatim during linking

--native-compile

List of compile options

--native-target

Build target type

--embed-resources

Embed resources into the Scala Native binary (can be read with the Java resources API)

--repository

Add repositories for dependency resolution.

Accepts predefined repositories supported by Coursier (like sonatype:snapshots or m2Local) or a URL of the root of Maven repository

Aliases: -r ,--repo

--debug

Turn debugging on

--debug-port

Debug port (5005 by default)

--debug-mode

Debug mode (attach by default)

--java-home

Set the Java home directory

--jvm

Use a specific JVM, such as 14, adopt:11, or graalvm:21, or system

Aliases: -j

--javac-plugin

Javac plugin dependencies or files

--javac-option

Javac options

Aliases: --javac-opt

--script-snippet

Allows to execute a passed string as a Scala script

--execute-script

A synonym to --script-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

Aliases: -e ,--execute-scala-script ,--execute-sc

--scala-snippet

Allows to execute a passed string as Scala code

--extra-compile-only-jars

Add extra JARs in the compilaion class path. Mainly using to run code in managed environments like Spark not to include certain depenencies on runtime ClassPath.

Aliases: --compile-only-jar ,--compile-only-jars ,--extra-compile-only-jar

--extra-source-jars

Add extra source JARs

Aliases: --source-jar ,--source-jars ,--extra-source-jar

--platform

Specify platform

--semantic-db

Generate SemanticDBs

Aliases: --semanticdb

--semantic-db-target-root

SemanticDB target root (default to the compiled classes destination directory)

Aliases: --semanticdb-target-root ,--semanticdb-targetroot

--semantic-db-source-root

SemanticDB source root (default to the project root directory)

Aliases: --semanticdb-source-root ,--semanticdb-sourceroot

--watch

Run the application in the background, automatically wake the thread and re-run if sources have been changed

Aliases: -w

--restart

Run the application in the background, automatically kill the process and restart if sources have been changed

Aliases: --revolver

--main-class-ls

List main classes available in the current context

Aliases: --main-class-list ,--list-main-class ,--list-main-classes

--command

Print the command that would have been run (one argument per line), rather than running it

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--suppress-directives-in-multiple-files-warning

Suppress warnings about using directives in multiple files

Aliases: --suppress-warning-directives-in-multiple-files

--suppress-outdated-dependency-warning

Suppress warnings about outdated dependencies in project

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--js-no-opt

Disable optimalisation for Scala.js, overrides --js-mode

--js-allow-big-ints-for-longs

Primitive Longs may be compiled as primitive JavaScript bigints

--js-avoid-classes

Avoid class'es when using functions and prototypes has the same observable semantics.

--js-avoid-lets-and-consts

Avoid lets and consts when using vars has the same observable semantics.

--js-module-split-style

The Scala.js module split style: fewestmodules, smallestmodules, smallmodulesfor

--js-small-module-for-package

Create as many small modules as possible for the classes in the passed packages and their subpackages.

--js-linker-path

Path to the Scala.js linker

--js-cli-version

Scala.js CLI version to use for linking (1.16.0 by default).

--js-cli-java-arg

Scala.js CLI Java options

--js-cli-on-jvm

Whether to run the Scala.js CLI on the JVM or using a native executable

--native-clang

Path to the Clang command

--native-clangpp

Path to the Clang++ command

--native-linking-defaults

Use default linking settings

--native-compile-defaults

Use default compile options

--bloop-bsp-protocol

Protocol to use to open a BSP connection with Bloop

--bloop-bsp-socket

Socket file to use to open a BSP connection with Bloop

--bloop-host

Host the compilation server should bind to

--bloop-port

Port the compilation server should bind to (pass -1 to pick a random port)

--bloop-daemon-dir

Daemon directory of the Bloop daemon (directory with lock, pid, and socket files)

--bloop-version

If Bloop isn't already running, the version we should start

--bloop-bsp-timeout

Maximum duration to wait for the BSP connection to be opened

--bloop-bsp-check-period

Duration between checks of the BSP connection state

--bloop-startup-timeout

Maximum duration to wait for the compilation server to start up

--bloop-default-java-opts

Include default JVM options for Bloop

--bloop-java-opt

Pass java options to use by Bloop server

--bloop-global-options-file

Bloop global options file

--bloop-jvm

JVM to use to start Bloop (e.g. 'system|11', 'temurin:17', …)

--bloop-working-dir

Working directory for Bloop, if it needs to be started

--server

Enable / disable usage of Bloop compilation server. Bloop is used by default so use --server=false to disable it. Disabling compilation server allows to test compilation in more controlled mannter (no caching or incremental compiler) but has a detrimental effect of performance.

--scalac-option

Add a scalac option. Note that options starting with -g, -language, -opt, -P, -target, -V, -W, -X, and -Y are assumed to be Scala compiler options and don't require to be passed after -O or --scalac-option.

Aliases: --scala-opt ,-O ,--scala-option

--jvm-index

JVM index URL

--jvm-index-os

Operating system to use when looking up in the JVM index

--jvm-index-arch

CPU architecture to use when looking up in the JVM index

--bsp-debug-port

Port for BSP debugging

--ttl

Specify a TTL for changing dependencies, such as snapshots

--cache

Set the coursier cache location

--coursier-validate-checksums

Enable checksum validation of artifacts downloaded by coursier

--workspace

Directory where .scala-build is written

--scalac-help

Show help for scalac. This is an alias for --scalac-option -help

Aliases: --help-scalac

--scalac-verbose

Turn verbosity on for scalac. This is an alias for --scalac-option -verbose

Aliases: --verbose-scalac

--execute-scala

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--java-snippet

Allows to execute a passed string as Java code

--execute-java

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--scala-library

--java

Do not add dependency to Scala Standard library. This is useful, when Scala CLI works with pure Java projects.

--runner

Should include Scala CLI runner on the runtime ClassPath. Runner is added by default for application running on JVM using standard Scala versions. Runner is used to make stack traces more readable in case of application failure.

--default-forbidden-directories

--forbid

--help-js

Show options for ScalaJS

--help-native

Show options for ScalaNative

--help-scaladoc

Show options for Scaladoc

Aliases: --help-doc ,--scaladoc-help ,--doc-help

--help-repl

Show options for Scala REPL

Aliases: --repl-help

--help-scalafmt

Show options for Scalafmt

Aliases: --help-fmt ,--scalafmt-help ,--fmt-help

--strict-bloop-json-check

--with-toolkit

Add toolkit to classPath (not supported in Scala 2.12), 'default' version for Scala toolkit: 0.2.1, 'default' version for typelevel toolkit: 0.1.23

Aliases: --toolkit

--exclude

Exclude sources

--java-prop-option

Add java properties. Note that options equal -Dproperty=value are assumed to be java properties and don't require to be passed after --java-prop.

Aliases: --java-prop

--scratch-dir

Temporary / working directory where to write generated launchers

--use-manifest

Run Java commands using a manifest-based class path (shortens command length)


shebang command

MUST have for Scala Runner specification.

Like run, but handier for shebang scripts.

This command is equivalent to the run sub-command, but it changes the way Scala CLI parses its command-line arguments in order to be compatible with shebang scripts.

When relying on the run sub-command, inputs and scala-cli options can be mixed, while program args have to be specified after --

  scala-cli [command] [scala-cli_options | input]... -- [program_arguments]...

However, for the shebang sub-command, only a single input file can be set, while all scala-cli options have to be set before the input file. All inputs after the first are treated as program arguments, without the need for --

  scala-cli shebang [scala-cli_options]... input [program_arguments]...

Using this, it is possible to conveniently set up Unix shebang scripts. For example:

  #!/usr/bin/env -S scala-cli shebang --scala-version 2.13
println("Hello, world")

For detailed documentation refer to our website: https://scala-cli.virtuslab.org/docs/commands/shebang

MUST have options

--power

Allows to use restricted & experimental features

--dependency

Add dependencies

Aliases: --dep

--compile-only-dependency

Add compile-only dependencies

Aliases: --compile-dep ,--compile-lib

--compiler-plugin

Add compiler plugin dependencies

Aliases: -P ,--plugin

--scala-version

Set the Scala version (3.4.1 by default)

Aliases: -S ,--scala

--scala-binary-version

Set the Scala binary version

Aliases: -B ,--scala-binary ,--scala-bin

--extra-jars

Add extra JARs and compiled classes to the class path

Aliases: --jar ,--jars ,--extra-jar ,--class ,--extra-class ,--classes ,--extra-classes ,-classpath ,-cp ,--classpath ,--class-path ,--extra-class-path

--resource-dirs

Add a resource directory

Aliases: --resource-dir

--with-compiler

Allows to include the Scala compiler artifacts on the classpath.

Aliases: --with-scala-compiler ,-with-compiler

--compilation-output

Copy compilation results to output directory using either relative or absolute path

Aliases: -d ,--output-directory ,--destination ,--compile-output ,--compile-out

--java-opt

Set Java options, such as -Xmx1g

Aliases: -J

--main-class

Specify which main class to run

Aliases: -M

SHOULD have options

--js

Enable Scala.js. To show more options for Scala.js pass --help-js

--js-version

The Scala.js version (1.16.0 by default).

--js-mode

The Scala.js mode, for fastLinkJS use one of [dev, fastLinkJS or fast], for fullLinkJS use one of [release, fullLinkJS, full]

--js-module-kind

The Scala.js module kind: commonjs/common, esmodule/es, nomodule/none

--js-check-ir

--js-emit-source-maps

Emit source maps

--js-source-maps-path

Set the destination path of source maps

--js-dom

Enable jsdom

--js-header

A header that will be added at the top of generated .js files

--js-es-version

The Scala.js ECMA Script version: es5_1, es2015, es2016, es2017, es2018, es2019, es2020, es2021

--native

Enable Scala Native. To show more options for Scala Native pass --help-native

--native-version

Set the Scala Native version (0.5.1 by default).

--native-mode

Set Scala Native compilation mode

--native-lto

Link-time optimisation mode

--native-gc

Set the Scala Native garbage collector

--native-linking

Extra options passed to clang verbatim during linking

--native-compile

List of compile options

--native-target

Build target type

--embed-resources

Embed resources into the Scala Native binary (can be read with the Java resources API)

--repository

Add repositories for dependency resolution.

Accepts predefined repositories supported by Coursier (like sonatype:snapshots or m2Local) or a URL of the root of Maven repository

Aliases: -r ,--repo

--debug

Turn debugging on

--debug-port

Debug port (5005 by default)

--debug-mode

Debug mode (attach by default)

--java-home

Set the Java home directory

--jvm

Use a specific JVM, such as 14, adopt:11, or graalvm:21, or system

Aliases: -j

--javac-plugin

Javac plugin dependencies or files

--javac-option

Javac options

Aliases: --javac-opt

--script-snippet

Allows to execute a passed string as a Scala script

--execute-script

A synonym to --script-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

Aliases: -e ,--execute-scala-script ,--execute-sc

--scala-snippet

Allows to execute a passed string as Scala code

--extra-compile-only-jars

Add extra JARs in the compilaion class path. Mainly using to run code in managed environments like Spark not to include certain depenencies on runtime ClassPath.

Aliases: --compile-only-jar ,--compile-only-jars ,--extra-compile-only-jar

--extra-source-jars

Add extra source JARs

Aliases: --source-jar ,--source-jars ,--extra-source-jar

--platform

Specify platform

--semantic-db

Generate SemanticDBs

Aliases: --semanticdb

--semantic-db-target-root

SemanticDB target root (default to the compiled classes destination directory)

Aliases: --semanticdb-target-root ,--semanticdb-targetroot

--semantic-db-source-root

SemanticDB source root (default to the project root directory)

Aliases: --semanticdb-source-root ,--semanticdb-sourceroot

--watch

Run the application in the background, automatically wake the thread and re-run if sources have been changed

Aliases: -w

--restart

Run the application in the background, automatically kill the process and restart if sources have been changed

Aliases: --revolver

--main-class-ls

List main classes available in the current context

Aliases: --main-class-list ,--list-main-class ,--list-main-classes

--command

Print the command that would have been run (one argument per line), rather than running it

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--suppress-directives-in-multiple-files-warning

Suppress warnings about using directives in multiple files

Aliases: --suppress-warning-directives-in-multiple-files

--suppress-outdated-dependency-warning

Suppress warnings about outdated dependencies in project

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--js-no-opt

Disable optimalisation for Scala.js, overrides --js-mode

--js-allow-big-ints-for-longs

Primitive Longs may be compiled as primitive JavaScript bigints

--js-avoid-classes

Avoid class'es when using functions and prototypes has the same observable semantics.

--js-avoid-lets-and-consts

Avoid lets and consts when using vars has the same observable semantics.

--js-module-split-style

The Scala.js module split style: fewestmodules, smallestmodules, smallmodulesfor

--js-small-module-for-package

Create as many small modules as possible for the classes in the passed packages and their subpackages.

--js-linker-path

Path to the Scala.js linker

--js-cli-version

Scala.js CLI version to use for linking (1.16.0 by default).

--js-cli-java-arg

Scala.js CLI Java options

--js-cli-on-jvm

Whether to run the Scala.js CLI on the JVM or using a native executable

--native-clang

Path to the Clang command

--native-clangpp

Path to the Clang++ command

--native-linking-defaults

Use default linking settings

--native-compile-defaults

Use default compile options

--bloop-bsp-protocol

Protocol to use to open a BSP connection with Bloop

--bloop-bsp-socket

Socket file to use to open a BSP connection with Bloop

--bloop-host

Host the compilation server should bind to

--bloop-port

Port the compilation server should bind to (pass -1 to pick a random port)

--bloop-daemon-dir

Daemon directory of the Bloop daemon (directory with lock, pid, and socket files)

--bloop-version

If Bloop isn't already running, the version we should start

--bloop-bsp-timeout

Maximum duration to wait for the BSP connection to be opened

--bloop-bsp-check-period

Duration between checks of the BSP connection state

--bloop-startup-timeout

Maximum duration to wait for the compilation server to start up

--bloop-default-java-opts

Include default JVM options for Bloop

--bloop-java-opt

Pass java options to use by Bloop server

--bloop-global-options-file

Bloop global options file

--bloop-jvm

JVM to use to start Bloop (e.g. 'system|11', 'temurin:17', …)

--bloop-working-dir

Working directory for Bloop, if it needs to be started

--server

Enable / disable usage of Bloop compilation server. Bloop is used by default so use --server=false to disable it. Disabling compilation server allows to test compilation in more controlled mannter (no caching or incremental compiler) but has a detrimental effect of performance.

--scalac-option

Add a scalac option. Note that options starting with -g, -language, -opt, -P, -target, -V, -W, -X, and -Y are assumed to be Scala compiler options and don't require to be passed after -O or --scalac-option.

Aliases: --scala-opt ,-O ,--scala-option

--jvm-index

JVM index URL

--jvm-index-os

Operating system to use when looking up in the JVM index

--jvm-index-arch

CPU architecture to use when looking up in the JVM index

--bsp-debug-port

Port for BSP debugging

--ttl

Specify a TTL for changing dependencies, such as snapshots

--cache

Set the coursier cache location

--coursier-validate-checksums

Enable checksum validation of artifacts downloaded by coursier

--workspace

Directory where .scala-build is written

--scalac-help

Show help for scalac. This is an alias for --scalac-option -help

Aliases: --help-scalac

--scalac-verbose

Turn verbosity on for scalac. This is an alias for --scalac-option -verbose

Aliases: --verbose-scalac

--execute-scala

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--java-snippet

Allows to execute a passed string as Java code

--execute-java

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--scala-library

--java

Do not add dependency to Scala Standard library. This is useful, when Scala CLI works with pure Java projects.

--runner

Should include Scala CLI runner on the runtime ClassPath. Runner is added by default for application running on JVM using standard Scala versions. Runner is used to make stack traces more readable in case of application failure.

--default-forbidden-directories

--forbid

--help-js

Show options for ScalaJS

--help-native

Show options for ScalaNative

--help-scaladoc

Show options for Scaladoc

Aliases: --help-doc ,--scaladoc-help ,--doc-help

--help-repl

Show options for Scala REPL

Aliases: --repl-help

--help-scalafmt

Show options for Scalafmt

Aliases: --help-fmt ,--scalafmt-help ,--fmt-help

--strict-bloop-json-check

--with-toolkit

Add toolkit to classPath (not supported in Scala 2.12), 'default' version for Scala toolkit: 0.2.1, 'default' version for typelevel toolkit: 0.1.23

Aliases: --toolkit

--exclude

Exclude sources

--java-prop-option

Add java properties. Note that options equal -Dproperty=value are assumed to be java properties and don't require to be passed after --java-prop.

Aliases: --java-prop

--scratch-dir

Temporary / working directory where to write generated launchers

--use-manifest

Run Java commands using a manifest-based class path (shortens command length)


SHOULD have commands

fmt command

SHOULD have for Scala Runner specification.

Aliases: format, scalafmt

Formats Scala code.

scalafmt is used to perform the formatting under the hood.

The .scalafmt.conf configuration file is optional. Default configuration values will be assumed by Scala CLI.

All standard Scala CLI inputs are accepted, but only Scala sources will be formatted (.scala and .sc files).

For detailed documentation refer to our website: https://scala-cli.virtuslab.org/docs/commands/fmt

MUST have options

--power

Allows to use restricted & experimental features

--dependency

Add dependencies

Aliases: --dep

--compile-only-dependency

Add compile-only dependencies

Aliases: --compile-dep ,--compile-lib

--compiler-plugin

Add compiler plugin dependencies

Aliases: -P ,--plugin

--scala-version

Set the Scala version (3.4.1 by default)

Aliases: -S ,--scala

--scala-binary-version

Set the Scala binary version

Aliases: -B ,--scala-binary ,--scala-bin

--extra-jars

Add extra JARs and compiled classes to the class path

Aliases: --jar ,--jars ,--extra-jar ,--class ,--extra-class ,--classes ,--extra-classes ,-classpath ,-cp ,--classpath ,--class-path ,--extra-class-path

--resource-dirs

Add a resource directory

Aliases: --resource-dir

--with-compiler

Allows to include the Scala compiler artifacts on the classpath.

Aliases: --with-scala-compiler ,-with-compiler

--compilation-output

Copy compilation results to output directory using either relative or absolute path

Aliases: -d ,--output-directory ,--destination ,--compile-output ,--compile-out

SHOULD have options

--js

Enable Scala.js. To show more options for Scala.js pass --help-js

--js-version

The Scala.js version (1.16.0 by default).

--js-mode

The Scala.js mode, for fastLinkJS use one of [dev, fastLinkJS or fast], for fullLinkJS use one of [release, fullLinkJS, full]

--js-module-kind

The Scala.js module kind: commonjs/common, esmodule/es, nomodule/none

--js-check-ir

--js-emit-source-maps

Emit source maps

--js-source-maps-path

Set the destination path of source maps

--js-dom

Enable jsdom

--js-header

A header that will be added at the top of generated .js files

--js-es-version

The Scala.js ECMA Script version: es5_1, es2015, es2016, es2017, es2018, es2019, es2020, es2021

--native

Enable Scala Native. To show more options for Scala Native pass --help-native

--native-version

Set the Scala Native version (0.5.1 by default).

--native-mode

Set Scala Native compilation mode

--native-lto

Link-time optimisation mode

--native-gc

Set the Scala Native garbage collector

--native-linking

Extra options passed to clang verbatim during linking

--native-compile

List of compile options

--native-target

Build target type

--embed-resources

Embed resources into the Scala Native binary (can be read with the Java resources API)

--repository

Add repositories for dependency resolution.

Accepts predefined repositories supported by Coursier (like sonatype:snapshots or m2Local) or a URL of the root of Maven repository

Aliases: -r ,--repo

--debug

Turn debugging on

--debug-port

Debug port (5005 by default)

--debug-mode

Debug mode (attach by default)

--java-home

Set the Java home directory

--jvm

Use a specific JVM, such as 14, adopt:11, or graalvm:21, or system

Aliases: -j

--javac-plugin

Javac plugin dependencies or files

--javac-option

Javac options

Aliases: --javac-opt

--script-snippet

Allows to execute a passed string as a Scala script

--execute-script

A synonym to --script-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

Aliases: -e ,--execute-scala-script ,--execute-sc

--scala-snippet

Allows to execute a passed string as Scala code

--extra-compile-only-jars

Add extra JARs in the compilaion class path. Mainly using to run code in managed environments like Spark not to include certain depenencies on runtime ClassPath.

Aliases: --compile-only-jar ,--compile-only-jars ,--extra-compile-only-jar

--extra-source-jars

Add extra source JARs

Aliases: --source-jar ,--source-jars ,--extra-source-jar

--platform

Specify platform

--semantic-db

Generate SemanticDBs

Aliases: --semanticdb

--semantic-db-target-root

SemanticDB target root (default to the compiled classes destination directory)

Aliases: --semanticdb-target-root ,--semanticdb-targetroot

--semantic-db-source-root

SemanticDB source root (default to the project root directory)

Aliases: --semanticdb-source-root ,--semanticdb-sourceroot

--check

Check if sources are well formatted

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--suppress-directives-in-multiple-files-warning

Suppress warnings about using directives in multiple files

Aliases: --suppress-warning-directives-in-multiple-files

--suppress-outdated-dependency-warning

Suppress warnings about outdated dependencies in project

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--js-no-opt

Disable optimalisation for Scala.js, overrides --js-mode

--js-allow-big-ints-for-longs

Primitive Longs may be compiled as primitive JavaScript bigints

--js-avoid-classes

Avoid class'es when using functions and prototypes has the same observable semantics.

--js-avoid-lets-and-consts

Avoid lets and consts when using vars has the same observable semantics.

--js-module-split-style

The Scala.js module split style: fewestmodules, smallestmodules, smallmodulesfor

--js-small-module-for-package

Create as many small modules as possible for the classes in the passed packages and their subpackages.

--js-linker-path

Path to the Scala.js linker

--js-cli-version

Scala.js CLI version to use for linking (1.16.0 by default).

--js-cli-java-arg

Scala.js CLI Java options

--js-cli-on-jvm

Whether to run the Scala.js CLI on the JVM or using a native executable

--native-clang

Path to the Clang command

--native-clangpp

Path to the Clang++ command

--native-linking-defaults

Use default linking settings

--native-compile-defaults

Use default compile options

--bloop-bsp-protocol

Protocol to use to open a BSP connection with Bloop

--bloop-bsp-socket

Socket file to use to open a BSP connection with Bloop

--bloop-host

Host the compilation server should bind to

--bloop-port

Port the compilation server should bind to (pass -1 to pick a random port)

--bloop-daemon-dir

Daemon directory of the Bloop daemon (directory with lock, pid, and socket files)

--bloop-version

If Bloop isn't already running, the version we should start

--bloop-bsp-timeout

Maximum duration to wait for the BSP connection to be opened

--bloop-bsp-check-period

Duration between checks of the BSP connection state

--bloop-startup-timeout

Maximum duration to wait for the compilation server to start up

--bloop-default-java-opts

Include default JVM options for Bloop

--bloop-java-opt

Pass java options to use by Bloop server

--bloop-global-options-file

Bloop global options file

--bloop-jvm

JVM to use to start Bloop (e.g. 'system|11', 'temurin:17', …)

--bloop-working-dir

Working directory for Bloop, if it needs to be started

--server

Enable / disable usage of Bloop compilation server. Bloop is used by default so use --server=false to disable it. Disabling compilation server allows to test compilation in more controlled mannter (no caching or incremental compiler) but has a detrimental effect of performance.

--scalac-option

Add a scalac option. Note that options starting with -g, -language, -opt, -P, -target, -V, -W, -X, and -Y are assumed to be Scala compiler options and don't require to be passed after -O or --scalac-option.

Aliases: --scala-opt ,-O ,--scala-option

--jvm-index

JVM index URL

--jvm-index-os

Operating system to use when looking up in the JVM index

--jvm-index-arch

CPU architecture to use when looking up in the JVM index

--bsp-debug-port

Port for BSP debugging

--ttl

Specify a TTL for changing dependencies, such as snapshots

--cache

Set the coursier cache location

--coursier-validate-checksums

Enable checksum validation of artifacts downloaded by coursier

--workspace

Directory where .scala-build is written

--scalac-help

Show help for scalac. This is an alias for --scalac-option -help

Aliases: --help-scalac

--scalac-verbose

Turn verbosity on for scalac. This is an alias for --scalac-option -verbose

Aliases: --verbose-scalac

--execute-scala

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--java-snippet

Allows to execute a passed string as Java code

--execute-java

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--scala-library

--java

Do not add dependency to Scala Standard library. This is useful, when Scala CLI works with pure Java projects.

--runner

Should include Scala CLI runner on the runtime ClassPath. Runner is added by default for application running on JVM using standard Scala versions. Runner is used to make stack traces more readable in case of application failure.

--default-forbidden-directories

--forbid

--help-js

Show options for ScalaJS

--help-native

Show options for ScalaNative

--help-scaladoc

Show options for Scaladoc

Aliases: --help-doc ,--scaladoc-help ,--doc-help

--help-repl

Show options for Scala REPL

Aliases: --repl-help

--help-scalafmt

Show options for Scalafmt

Aliases: --help-fmt ,--scalafmt-help ,--fmt-help

--strict-bloop-json-check

--with-toolkit

Add toolkit to classPath (not supported in Scala 2.12), 'default' version for Scala toolkit: 0.2.1, 'default' version for typelevel toolkit: 0.1.23

Aliases: --toolkit

--exclude

Exclude sources

--respect-project-filters

Use project filters defined in the configuration. Turned on by default, use --respect-project-filters:false to disable it.

--save-scalafmt-conf

Saves .scalafmt.conf file if it was created or overwritten

--os-arch-suffix

--scalafmt-tag

--scalafmt-github-org-name

--scalafmt-extension

--scalafmt-launcher

--scalafmt-arg

Pass an argument to scalafmt.

Aliases: -F

--scalafmt-conf

Custom path to the scalafmt configuration file.

Aliases: --scalafmt-config

--scalafmt-conf-str

Pass configuration as a string.

Aliases: --scalafmt-config-str ,--scalafmt-conf-snippet

--scalafmt-dialect

Pass a global dialect for scalafmt. This overrides whatever value is configured in the .scalafmt.conf file or inferred based on Scala version used.

Aliases: --dialect

--scalafmt-version

Pass scalafmt version before running it (3.7.17 by default). If passed, this overrides whatever value is configured in the .scalafmt.conf file.

Aliases: --fmt-version


test command

SHOULD have for Scala Runner specification.

Compile and test Scala code.

Test sources are compiled separately (after the 'main' sources), and may use different dependencies, compiler options, and other configurations. A source file is treated as a test source if:

  • the file name ends with .test.scala
  • the file comes from a directory that is provided as input, and the relative path from that file to its original directory contains a test directory
  • it contains the //> using target.scope "test" directive (Experimental)

Specific test configurations can be specified with both command line options and using directives defined in sources. Command line options always take priority over using directives when a clash occurs, allowing to override configurations defined in sources. Using directives can be defined in all supported input source file types.

Multiple inputs can be passed at once. Paths to directories, URLs and supported file types are accepted as inputs. Accepted file extensions: .scala, .sc, .java, .jar, .md, .jar, .c, .h, .zip For piped inputs use the corresponding alias: _.scala, _.java, _.sc, _.md All supported types of inputs can be mixed with each other.

For detailed documentation refer to our website: https://scala-cli.virtuslab.org/docs/commands/test

MUST have options

--power

Allows to use restricted & experimental features

--dependency

Add dependencies

Aliases: --dep

--compile-only-dependency

Add compile-only dependencies

Aliases: --compile-dep ,--compile-lib

--compiler-plugin

Add compiler plugin dependencies

Aliases: -P ,--plugin

--scala-version

Set the Scala version (3.4.1 by default)

Aliases: -S ,--scala

--scala-binary-version

Set the Scala binary version

Aliases: -B ,--scala-binary ,--scala-bin

--extra-jars

Add extra JARs and compiled classes to the class path

Aliases: --jar ,--jars ,--extra-jar ,--class ,--extra-class ,--classes ,--extra-classes ,-classpath ,-cp ,--classpath ,--class-path ,--extra-class-path

--resource-dirs

Add a resource directory

Aliases: --resource-dir

--with-compiler

Allows to include the Scala compiler artifacts on the classpath.

Aliases: --with-scala-compiler ,-with-compiler

--compilation-output

Copy compilation results to output directory using either relative or absolute path

Aliases: -d ,--output-directory ,--destination ,--compile-output ,--compile-out

--java-opt

Set Java options, such as -Xmx1g

Aliases: -J

SHOULD have options

--js

Enable Scala.js. To show more options for Scala.js pass --help-js

--js-version

The Scala.js version (1.16.0 by default).

--js-mode

The Scala.js mode, for fastLinkJS use one of [dev, fastLinkJS or fast], for fullLinkJS use one of [release, fullLinkJS, full]

--js-module-kind

The Scala.js module kind: commonjs/common, esmodule/es, nomodule/none

--js-check-ir

--js-emit-source-maps

Emit source maps

--js-source-maps-path

Set the destination path of source maps

--js-dom

Enable jsdom

--js-header

A header that will be added at the top of generated .js files

--js-es-version

The Scala.js ECMA Script version: es5_1, es2015, es2016, es2017, es2018, es2019, es2020, es2021

--native

Enable Scala Native. To show more options for Scala Native pass --help-native

--native-version

Set the Scala Native version (0.5.1 by default).

--native-mode

Set Scala Native compilation mode

--native-lto

Link-time optimisation mode

--native-gc

Set the Scala Native garbage collector

--native-linking

Extra options passed to clang verbatim during linking

--native-compile

List of compile options

--native-target

Build target type

--embed-resources

Embed resources into the Scala Native binary (can be read with the Java resources API)

--repository

Add repositories for dependency resolution.

Accepts predefined repositories supported by Coursier (like sonatype:snapshots or m2Local) or a URL of the root of Maven repository

Aliases: -r ,--repo

--debug

Turn debugging on

--debug-port

Debug port (5005 by default)

--debug-mode

Debug mode (attach by default)

--java-home

Set the Java home directory

--jvm

Use a specific JVM, such as 14, adopt:11, or graalvm:21, or system

Aliases: -j

--javac-plugin

Javac plugin dependencies or files

--javac-option

Javac options

Aliases: --javac-opt

--script-snippet

Allows to execute a passed string as a Scala script

--execute-script

A synonym to --script-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

Aliases: -e ,--execute-scala-script ,--execute-sc

--scala-snippet

Allows to execute a passed string as Scala code

--extra-compile-only-jars

Add extra JARs in the compilaion class path. Mainly using to run code in managed environments like Spark not to include certain depenencies on runtime ClassPath.

Aliases: --compile-only-jar ,--compile-only-jars ,--extra-compile-only-jar

--extra-source-jars

Add extra source JARs

Aliases: --source-jar ,--source-jars ,--extra-source-jar

--platform

Specify platform

--semantic-db

Generate SemanticDBs

Aliases: --semanticdb

--semantic-db-target-root

SemanticDB target root (default to the compiled classes destination directory)

Aliases: --semanticdb-target-root ,--semanticdb-targetroot

--semantic-db-source-root

SemanticDB source root (default to the project root directory)

Aliases: --semanticdb-source-root ,--semanticdb-sourceroot

--watch

Run the application in the background, automatically wake the thread and re-run if sources have been changed

Aliases: -w

--restart

Run the application in the background, automatically kill the process and restart if sources have been changed

Aliases: --revolver

--test-framework

Name of the test framework's runner class to use while running tests

--require-tests

Fail if no test suites were run

--test-only

Specify a glob pattern to filter the tests suite to be run.

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--suppress-directives-in-multiple-files-warning

Suppress warnings about using directives in multiple files

Aliases: --suppress-warning-directives-in-multiple-files

--suppress-outdated-dependency-warning

Suppress warnings about outdated dependencies in project

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--js-no-opt

Disable optimalisation for Scala.js, overrides --js-mode

--js-allow-big-ints-for-longs

Primitive Longs may be compiled as primitive JavaScript bigints

--js-avoid-classes

Avoid class'es when using functions and prototypes has the same observable semantics.

--js-avoid-lets-and-consts

Avoid lets and consts when using vars has the same observable semantics.

--js-module-split-style

The Scala.js module split style: fewestmodules, smallestmodules, smallmodulesfor

--js-small-module-for-package

Create as many small modules as possible for the classes in the passed packages and their subpackages.

--js-linker-path

Path to the Scala.js linker

--js-cli-version

Scala.js CLI version to use for linking (1.16.0 by default).

--js-cli-java-arg

Scala.js CLI Java options

--js-cli-on-jvm

Whether to run the Scala.js CLI on the JVM or using a native executable

--native-clang

Path to the Clang command

--native-clangpp

Path to the Clang++ command

--native-linking-defaults

Use default linking settings

--native-compile-defaults

Use default compile options

--bloop-bsp-protocol

Protocol to use to open a BSP connection with Bloop

--bloop-bsp-socket

Socket file to use to open a BSP connection with Bloop

--bloop-host

Host the compilation server should bind to

--bloop-port

Port the compilation server should bind to (pass -1 to pick a random port)

--bloop-daemon-dir

Daemon directory of the Bloop daemon (directory with lock, pid, and socket files)

--bloop-version

If Bloop isn't already running, the version we should start

--bloop-bsp-timeout

Maximum duration to wait for the BSP connection to be opened

--bloop-bsp-check-period

Duration between checks of the BSP connection state

--bloop-startup-timeout

Maximum duration to wait for the compilation server to start up

--bloop-default-java-opts

Include default JVM options for Bloop

--bloop-java-opt

Pass java options to use by Bloop server

--bloop-global-options-file

Bloop global options file

--bloop-jvm

JVM to use to start Bloop (e.g. 'system|11', 'temurin:17', …)

--bloop-working-dir

Working directory for Bloop, if it needs to be started

--server

Enable / disable usage of Bloop compilation server. Bloop is used by default so use --server=false to disable it. Disabling compilation server allows to test compilation in more controlled mannter (no caching or incremental compiler) but has a detrimental effect of performance.

--scalac-option

Add a scalac option. Note that options starting with -g, -language, -opt, -P, -target, -V, -W, -X, and -Y are assumed to be Scala compiler options and don't require to be passed after -O or --scalac-option.

Aliases: --scala-opt ,-O ,--scala-option

--jvm-index

JVM index URL

--jvm-index-os

Operating system to use when looking up in the JVM index

--jvm-index-arch

CPU architecture to use when looking up in the JVM index

--bsp-debug-port

Port for BSP debugging

--ttl

Specify a TTL for changing dependencies, such as snapshots

--cache

Set the coursier cache location

--coursier-validate-checksums

Enable checksum validation of artifacts downloaded by coursier

--workspace

Directory where .scala-build is written

--scalac-help

Show help for scalac. This is an alias for --scalac-option -help

Aliases: --help-scalac

--scalac-verbose

Turn verbosity on for scalac. This is an alias for --scalac-option -verbose

Aliases: --verbose-scalac

--execute-scala

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--java-snippet

Allows to execute a passed string as Java code

--execute-java

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--scala-library

--java

Do not add dependency to Scala Standard library. This is useful, when Scala CLI works with pure Java projects.

--runner

Should include Scala CLI runner on the runtime ClassPath. Runner is added by default for application running on JVM using standard Scala versions. Runner is used to make stack traces more readable in case of application failure.

--default-forbidden-directories

--forbid

--help-js

Show options for ScalaJS

--help-native

Show options for ScalaNative

--help-scaladoc

Show options for Scaladoc

Aliases: --help-doc ,--scaladoc-help ,--doc-help

--help-repl

Show options for Scala REPL

Aliases: --repl-help

--help-scalafmt

Show options for Scalafmt

Aliases: --help-fmt ,--scalafmt-help ,--fmt-help

--strict-bloop-json-check

--with-toolkit

Add toolkit to classPath (not supported in Scala 2.12), 'default' version for Scala toolkit: 0.2.1, 'default' version for typelevel toolkit: 0.1.23

Aliases: --toolkit

--exclude

Exclude sources

--java-prop-option

Add java properties. Note that options equal -Dproperty=value are assumed to be java properties and don't require to be passed after --java-prop.

Aliases: --java-prop


version command

SHOULD have for Scala Runner specification.

Prints the version of the Scala CLI and the default version of Scala. (which can be overridden in the project) If network connection is available, this sub-command also checks if the installed Scala CLI is up-to-date.

The version of the Scala CLI is the version of the command-line tool that runs Scala programs, which is distinct from the Scala version of the compiler. We recommend to specify the version of the Scala compiler for a project in its sources (via a using directive). Otherwise, Scala CLI falls back to the default Scala version defined by the runner.

For detailed documentation refer to our website: https://scala-cli.virtuslab.org/docs/commands/version

MUST have options

--power

Allows to use restricted & experimental features

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--cli-version

Show plain Scala CLI version only

Aliases: --cli

--scala-version

Show plain Scala version only

Aliases: --scala

--gh-token

A github token used to access GitHub. Not needed in most cases.

--offline

Don't check for the newest available Scala CLI version upstream


IMPLEMENTATION specific commands

bsp command

IMPLEMENTATION specific for Scala Runner specification.

Start BSP server.

BSP stands for Build Server Protocol. For more information refer to https://build-server-protocol.github.io/

This sub-command is not designed to be used by a human. It is normally supposed to be invoked by your IDE when a Scala CLI project is imported.

Detailed documentation can be found on our website: https://scala-cli.virtuslab.org

MUST have options

--power

Allows to use restricted & experimental features

--dependency

Add dependencies

Aliases: --dep

--compile-only-dependency

Add compile-only dependencies

Aliases: --compile-dep ,--compile-lib

--compiler-plugin

Add compiler plugin dependencies

Aliases: -P ,--plugin

--scala-version

Set the Scala version (3.4.1 by default)

Aliases: -S ,--scala

--scala-binary-version

Set the Scala binary version

Aliases: -B ,--scala-binary ,--scala-bin

--extra-jars

Add extra JARs and compiled classes to the class path

Aliases: --jar ,--jars ,--extra-jar ,--class ,--extra-class ,--classes ,--extra-classes ,-classpath ,-cp ,--classpath ,--class-path ,--extra-class-path

--resource-dirs

Add a resource directory

Aliases: --resource-dir

--with-compiler

Allows to include the Scala compiler artifacts on the classpath.

Aliases: --with-scala-compiler ,-with-compiler

--compilation-output

Copy compilation results to output directory using either relative or absolute path

Aliases: -d ,--output-directory ,--destination ,--compile-output ,--compile-out

SHOULD have options

--js

Enable Scala.js. To show more options for Scala.js pass --help-js

--js-version

The Scala.js version (1.16.0 by default).

--js-mode

The Scala.js mode, for fastLinkJS use one of [dev, fastLinkJS or fast], for fullLinkJS use one of [release, fullLinkJS, full]

--js-module-kind

The Scala.js module kind: commonjs/common, esmodule/es, nomodule/none

--js-check-ir

--js-emit-source-maps

Emit source maps

--js-source-maps-path

Set the destination path of source maps

--js-dom

Enable jsdom

--js-header

A header that will be added at the top of generated .js files

--js-es-version

The Scala.js ECMA Script version: es5_1, es2015, es2016, es2017, es2018, es2019, es2020, es2021

--native

Enable Scala Native. To show more options for Scala Native pass --help-native

--native-version

Set the Scala Native version (0.5.1 by default).

--native-mode

Set Scala Native compilation mode

--native-lto

Link-time optimisation mode

--native-gc

Set the Scala Native garbage collector

--native-linking

Extra options passed to clang verbatim during linking

--native-compile

List of compile options

--native-target

Build target type

--embed-resources

Embed resources into the Scala Native binary (can be read with the Java resources API)

--repository

Add repositories for dependency resolution.

Accepts predefined repositories supported by Coursier (like sonatype:snapshots or m2Local) or a URL of the root of Maven repository

Aliases: -r ,--repo

--debug

Turn debugging on

--debug-port

Debug port (5005 by default)

--debug-mode

Debug mode (attach by default)

--java-home

Set the Java home directory

--jvm

Use a specific JVM, such as 14, adopt:11, or graalvm:21, or system

Aliases: -j

--javac-plugin

Javac plugin dependencies or files

--javac-option

Javac options

Aliases: --javac-opt

--script-snippet

Allows to execute a passed string as a Scala script

--execute-script

A synonym to --script-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

Aliases: -e ,--execute-scala-script ,--execute-sc

--scala-snippet

Allows to execute a passed string as Scala code

--extra-compile-only-jars

Add extra JARs in the compilaion class path. Mainly using to run code in managed environments like Spark not to include certain depenencies on runtime ClassPath.

Aliases: --compile-only-jar ,--compile-only-jars ,--extra-compile-only-jar

--extra-source-jars

Add extra source JARs

Aliases: --source-jar ,--source-jars ,--extra-source-jar

--platform

Specify platform

--semantic-db

Generate SemanticDBs

Aliases: --semanticdb

--semantic-db-target-root

SemanticDB target root (default to the compiled classes destination directory)

Aliases: --semanticdb-target-root ,--semanticdb-targetroot

--semantic-db-source-root

SemanticDB source root (default to the project root directory)

Aliases: --semanticdb-source-root ,--semanticdb-sourceroot

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--suppress-directives-in-multiple-files-warning

Suppress warnings about using directives in multiple files

Aliases: --suppress-warning-directives-in-multiple-files

--suppress-outdated-dependency-warning

Suppress warnings about outdated dependencies in project

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--js-no-opt

Disable optimalisation for Scala.js, overrides --js-mode

--js-allow-big-ints-for-longs

Primitive Longs may be compiled as primitive JavaScript bigints

--js-avoid-classes

Avoid class'es when using functions and prototypes has the same observable semantics.

--js-avoid-lets-and-consts

Avoid lets and consts when using vars has the same observable semantics.

--js-module-split-style

The Scala.js module split style: fewestmodules, smallestmodules, smallmodulesfor

--js-small-module-for-package

Create as many small modules as possible for the classes in the passed packages and their subpackages.

--js-linker-path

Path to the Scala.js linker

--js-cli-version

Scala.js CLI version to use for linking (1.16.0 by default).

--js-cli-java-arg

Scala.js CLI Java options

--js-cli-on-jvm

Whether to run the Scala.js CLI on the JVM or using a native executable

--native-clang

Path to the Clang command

--native-clangpp

Path to the Clang++ command

--native-linking-defaults

Use default linking settings

--native-compile-defaults

Use default compile options

--bloop-bsp-protocol

Protocol to use to open a BSP connection with Bloop

--bloop-bsp-socket

Socket file to use to open a BSP connection with Bloop

--bloop-host

Host the compilation server should bind to

--bloop-port

Port the compilation server should bind to (pass -1 to pick a random port)

--bloop-daemon-dir

Daemon directory of the Bloop daemon (directory with lock, pid, and socket files)

--bloop-version

If Bloop isn't already running, the version we should start

--bloop-bsp-timeout

Maximum duration to wait for the BSP connection to be opened

--bloop-bsp-check-period

Duration between checks of the BSP connection state

--bloop-startup-timeout

Maximum duration to wait for the compilation server to start up

--bloop-default-java-opts

Include default JVM options for Bloop

--bloop-java-opt

Pass java options to use by Bloop server

--bloop-global-options-file

Bloop global options file

--bloop-jvm

JVM to use to start Bloop (e.g. 'system|11', 'temurin:17', …)

--bloop-working-dir

Working directory for Bloop, if it needs to be started

--server

Enable / disable usage of Bloop compilation server. Bloop is used by default so use --server=false to disable it. Disabling compilation server allows to test compilation in more controlled mannter (no caching or incremental compiler) but has a detrimental effect of performance.

--scalac-option

Add a scalac option. Note that options starting with -g, -language, -opt, -P, -target, -V, -W, -X, and -Y are assumed to be Scala compiler options and don't require to be passed after -O or --scalac-option.

Aliases: --scala-opt ,-O ,--scala-option

--jvm-index

JVM index URL

--jvm-index-os

Operating system to use when looking up in the JVM index

--jvm-index-arch

CPU architecture to use when looking up in the JVM index

--bsp-debug-port

Port for BSP debugging

--ttl

Specify a TTL for changing dependencies, such as snapshots

--cache

Set the coursier cache location

--coursier-validate-checksums

Enable checksum validation of artifacts downloaded by coursier

--workspace

Directory where .scala-build is written

--scalac-help

Show help for scalac. This is an alias for --scalac-option -help

Aliases: --help-scalac

--scalac-verbose

Turn verbosity on for scalac. This is an alias for --scalac-option -verbose

Aliases: --verbose-scalac

--execute-scala

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--java-snippet

Allows to execute a passed string as Java code

--execute-java

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--scala-library

--java

Do not add dependency to Scala Standard library. This is useful, when Scala CLI works with pure Java projects.

--runner

Should include Scala CLI runner on the runtime ClassPath. Runner is added by default for application running on JVM using standard Scala versions. Runner is used to make stack traces more readable in case of application failure.

--default-forbidden-directories

--forbid

--help-js

Show options for ScalaJS

--help-native

Show options for ScalaNative

--help-scaladoc

Show options for Scaladoc

Aliases: --help-doc ,--scaladoc-help ,--doc-help

--help-repl

Show options for Scala REPL

Aliases: --repl-help

--help-scalafmt

Show options for Scalafmt

Aliases: --help-fmt ,--scalafmt-help ,--fmt-help

--strict-bloop-json-check

--with-toolkit

Add toolkit to classPath (not supported in Scala 2.12), 'default' version for Scala toolkit: 0.2.1, 'default' version for typelevel toolkit: 0.1.23

Aliases: --toolkit

--exclude

Exclude sources

--json-options

Command-line options JSON file


clean command

IMPLEMENTATION specific for Scala Runner specification.

Clean the workspace.

Passed inputs will establish the Scala CLI project, for which the workspace will be cleaned.

For detailed documentation refer to our website: https://scala-cli.virtuslab.org/docs/commands/clean

MUST have options

--power

Allows to use restricted & experimental features

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--bsp-directory

Custom BSP configuration location

Aliases: --bsp-dir

--bsp-name

Name of BSP

Aliases: --name

--workspace

Directory where .scala-build is written


help command

IMPLEMENTATION specific for Scala Runner specification.

Print help message

MUST have options

--power

Allows to use restricted & experimental features

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning


install-completions command

IMPLEMENTATION specific for Scala Runner specification.

Aliases: install-completions

Installs Scala CLI completions into your shell

For detailed documentation refer to our website: https://scala-cli.virtuslab.org/docs/commands/completions

MUST have options

--power

Allows to use restricted & experimental features

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--format

Name of the shell, either zsh or bash

Aliases: --shell

--rc-file

Path to *rc file, defaults to .bashrc or .zshrc depending on shell

--output

Completions output directory

Aliases: -o

--banner

Custom banner in comment placed in rc file

--name

Custom completions name

--env

Print completions to stdout


install-home command

IMPLEMENTATION specific for Scala Runner specification.

Install Scala CLI in a sub-directory of the home directory

MUST have options

--power

Allows to use restricted & experimental features

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--scala-cli-binary-path

--force

Overwrite if it exists

Aliases: -f

--binary-name

Binary name

--env

Print the update to env variable

--bin-dir

Binary directory


setup-ide command

IMPLEMENTATION specific for Scala Runner specification.

Generates a BSP file that you can import into your IDE.

The setup-ide sub-command allows to pre-configure a Scala CLI project to import to an IDE with BSP support. It is also ran implicitly when compile, run, shebang or test sub-commands are called.

The pre-configuration should be saved in a BSP json connection file under the path:

    {project-root}/.bsp/scala-cli.json

Specific setup-ide configurations can be specified with both command line options and using directives defined in sources. Command line options always take priority over using directives when a clash occurs, allowing to override configurations defined in sources. Using directives can be defined in all supported input source file types.

For detailed documentation refer to our website: https://scala-cli.virtuslab.org/docs/commands/setup-ide

MUST have options

--power

Allows to use restricted & experimental features

--dependency

Add dependencies

Aliases: --dep

--compile-only-dependency

Add compile-only dependencies

Aliases: --compile-dep ,--compile-lib

--compiler-plugin

Add compiler plugin dependencies

Aliases: -P ,--plugin

--scala-version

Set the Scala version (3.4.1 by default)

Aliases: -S ,--scala

--scala-binary-version

Set the Scala binary version

Aliases: -B ,--scala-binary ,--scala-bin

--extra-jars

Add extra JARs and compiled classes to the class path

Aliases: --jar ,--jars ,--extra-jar ,--class ,--extra-class ,--classes ,--extra-classes ,-classpath ,-cp ,--classpath ,--class-path ,--extra-class-path

--resource-dirs

Add a resource directory

Aliases: --resource-dir

--with-compiler

Allows to include the Scala compiler artifacts on the classpath.

Aliases: --with-scala-compiler ,-with-compiler

--compilation-output

Copy compilation results to output directory using either relative or absolute path

Aliases: -d ,--output-directory ,--destination ,--compile-output ,--compile-out

SHOULD have options

--js

Enable Scala.js. To show more options for Scala.js pass --help-js

--js-version

The Scala.js version (1.16.0 by default).

--js-mode

The Scala.js mode, for fastLinkJS use one of [dev, fastLinkJS or fast], for fullLinkJS use one of [release, fullLinkJS, full]

--js-module-kind

The Scala.js module kind: commonjs/common, esmodule/es, nomodule/none

--js-check-ir

--js-emit-source-maps

Emit source maps

--js-source-maps-path

Set the destination path of source maps

--js-dom

Enable jsdom

--js-header

A header that will be added at the top of generated .js files

--js-es-version

The Scala.js ECMA Script version: es5_1, es2015, es2016, es2017, es2018, es2019, es2020, es2021

--native

Enable Scala Native. To show more options for Scala Native pass --help-native

--native-version

Set the Scala Native version (0.5.1 by default).

--native-mode

Set Scala Native compilation mode

--native-lto

Link-time optimisation mode

--native-gc

Set the Scala Native garbage collector

--native-linking

Extra options passed to clang verbatim during linking

--native-compile

List of compile options

--native-target

Build target type

--embed-resources

Embed resources into the Scala Native binary (can be read with the Java resources API)

--repository

Add repositories for dependency resolution.

Accepts predefined repositories supported by Coursier (like sonatype:snapshots or m2Local) or a URL of the root of Maven repository

Aliases: -r ,--repo

--debug

Turn debugging on

--debug-port

Debug port (5005 by default)

--debug-mode

Debug mode (attach by default)

--java-home

Set the Java home directory

--jvm

Use a specific JVM, such as 14, adopt:11, or graalvm:21, or system

Aliases: -j

--javac-plugin

Javac plugin dependencies or files

--javac-option

Javac options

Aliases: --javac-opt

--script-snippet

Allows to execute a passed string as a Scala script

--execute-script

A synonym to --script-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

Aliases: -e ,--execute-scala-script ,--execute-sc

--scala-snippet

Allows to execute a passed string as Scala code

--extra-compile-only-jars

Add extra JARs in the compilaion class path. Mainly using to run code in managed environments like Spark not to include certain depenencies on runtime ClassPath.

Aliases: --compile-only-jar ,--compile-only-jars ,--extra-compile-only-jar

--extra-source-jars

Add extra source JARs

Aliases: --source-jar ,--source-jars ,--extra-source-jar

--platform

Specify platform

--semantic-db

Generate SemanticDBs

Aliases: --semanticdb

--semantic-db-target-root

SemanticDB target root (default to the compiled classes destination directory)

Aliases: --semanticdb-target-root ,--semanticdb-targetroot

--semantic-db-source-root

SemanticDB source root (default to the project root directory)

Aliases: --semanticdb-source-root ,--semanticdb-sourceroot

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--suppress-directives-in-multiple-files-warning

Suppress warnings about using directives in multiple files

Aliases: --suppress-warning-directives-in-multiple-files

--suppress-outdated-dependency-warning

Suppress warnings about outdated dependencies in project

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--js-no-opt

Disable optimalisation for Scala.js, overrides --js-mode

--js-allow-big-ints-for-longs

Primitive Longs may be compiled as primitive JavaScript bigints

--js-avoid-classes

Avoid class'es when using functions and prototypes has the same observable semantics.

--js-avoid-lets-and-consts

Avoid lets and consts when using vars has the same observable semantics.

--js-module-split-style

The Scala.js module split style: fewestmodules, smallestmodules, smallmodulesfor

--js-small-module-for-package

Create as many small modules as possible for the classes in the passed packages and their subpackages.

--js-linker-path

Path to the Scala.js linker

--js-cli-version

Scala.js CLI version to use for linking (1.16.0 by default).

--js-cli-java-arg

Scala.js CLI Java options

--js-cli-on-jvm

Whether to run the Scala.js CLI on the JVM or using a native executable

--native-clang

Path to the Clang command

--native-clangpp

Path to the Clang++ command

--native-linking-defaults

Use default linking settings

--native-compile-defaults

Use default compile options

--bloop-bsp-protocol

Protocol to use to open a BSP connection with Bloop

--bloop-bsp-socket

Socket file to use to open a BSP connection with Bloop

--bloop-host

Host the compilation server should bind to

--bloop-port

Port the compilation server should bind to (pass -1 to pick a random port)

--bloop-daemon-dir

Daemon directory of the Bloop daemon (directory with lock, pid, and socket files)

--bloop-version

If Bloop isn't already running, the version we should start

--bloop-bsp-timeout

Maximum duration to wait for the BSP connection to be opened

--bloop-bsp-check-period

Duration between checks of the BSP connection state

--bloop-startup-timeout

Maximum duration to wait for the compilation server to start up

--bloop-default-java-opts

Include default JVM options for Bloop

--bloop-java-opt

Pass java options to use by Bloop server

--bloop-global-options-file

Bloop global options file

--bloop-jvm

JVM to use to start Bloop (e.g. 'system|11', 'temurin:17', …)

--bloop-working-dir

Working directory for Bloop, if it needs to be started

--server

Enable / disable usage of Bloop compilation server. Bloop is used by default so use --server=false to disable it. Disabling compilation server allows to test compilation in more controlled mannter (no caching or incremental compiler) but has a detrimental effect of performance.

--scalac-option

Add a scalac option. Note that options starting with -g, -language, -opt, -P, -target, -V, -W, -X, and -Y are assumed to be Scala compiler options and don't require to be passed after -O or --scalac-option.

Aliases: --scala-opt ,-O ,--scala-option

--jvm-index

JVM index URL

--jvm-index-os

Operating system to use when looking up in the JVM index

--jvm-index-arch

CPU architecture to use when looking up in the JVM index

--bsp-debug-port

Port for BSP debugging

--ttl

Specify a TTL for changing dependencies, such as snapshots

--cache

Set the coursier cache location

--coursier-validate-checksums

Enable checksum validation of artifacts downloaded by coursier

--workspace

Directory where .scala-build is written

--scalac-help

Show help for scalac. This is an alias for --scalac-option -help

Aliases: --help-scalac

--scalac-verbose

Turn verbosity on for scalac. This is an alias for --scalac-option -verbose

Aliases: --verbose-scalac

--execute-scala

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--java-snippet

Allows to execute a passed string as Java code

--execute-java

A synonym to --scala-snippet, which defaults the sub-command to run when no sub-command is passed explicitly

--scala-library

--java

Do not add dependency to Scala Standard library. This is useful, when Scala CLI works with pure Java projects.

--runner

Should include Scala CLI runner on the runtime ClassPath. Runner is added by default for application running on JVM using standard Scala versions. Runner is used to make stack traces more readable in case of application failure.

--default-forbidden-directories

--forbid

--help-js

Show options for ScalaJS

--help-native

Show options for ScalaNative

--help-scaladoc

Show options for Scaladoc

Aliases: --help-doc ,--scaladoc-help ,--doc-help

--help-repl

Show options for Scala REPL

Aliases: --repl-help

--help-scalafmt

Show options for Scalafmt

Aliases: --help-fmt ,--scalafmt-help ,--fmt-help

--strict-bloop-json-check

--with-toolkit

Add toolkit to classPath (not supported in Scala 2.12), 'default' version for Scala toolkit: 0.2.1, 'default' version for typelevel toolkit: 0.1.23

Aliases: --toolkit

--exclude

Exclude sources

--bsp-directory

Custom BSP configuration location

Aliases: --bsp-dir

--bsp-name

Name of BSP

Aliases: --name

--charset


uninstall command

IMPLEMENTATION specific for Scala Runner specification.

Uninstalls Scala CLI. Works only when installed with the installation script. For detailed installation instructions refer to our website: https://scala-cli.virtuslab.org/install

MUST have options

--power

Allows to use restricted & experimental features

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--bloop-bsp-protocol

Protocol to use to open a BSP connection with Bloop

--bloop-bsp-socket

Socket file to use to open a BSP connection with Bloop

--bloop-host

Host the compilation server should bind to

--bloop-port

Port the compilation server should bind to (pass -1 to pick a random port)

--bloop-daemon-dir

Daemon directory of the Bloop daemon (directory with lock, pid, and socket files)

--bloop-version

If Bloop isn't already running, the version we should start

--bloop-bsp-timeout

Maximum duration to wait for the BSP connection to be opened

--bloop-bsp-check-period

Duration between checks of the BSP connection state

--bloop-startup-timeout

Maximum duration to wait for the compilation server to start up

--bloop-default-java-opts

Include default JVM options for Bloop

--bloop-java-opt

Pass java options to use by Bloop server

--bloop-global-options-file

Bloop global options file

--bloop-jvm

JVM to use to start Bloop (e.g. 'system|11', 'temurin:17', …)

--bloop-working-dir

Working directory for Bloop, if it needs to be started

--server

Enable / disable usage of Bloop compilation server. Bloop is used by default so use --server=false to disable it. Disabling compilation server allows to test compilation in more controlled mannter (no caching or incremental compiler) but has a detrimental effect of performance.

--ttl

Specify a TTL for changing dependencies, such as snapshots

--cache

Set the coursier cache location

--coursier-validate-checksums

Enable checksum validation of artifacts downloaded by coursier

--rc-file

Path to *rc file, defaults to .bashrc or .zshrc depending on shell

--banner

Custom banner in comment placed in rc file

--name

Custom completions name

--force

Force scala-cli uninstall

Aliases: -f

--skip-cache

Don't clear Scala CLI cache

--binary-name

Binary name

--bin-dir

Binary directory


uninstall-completions command

IMPLEMENTATION specific for Scala Runner specification.

Aliases: uninstall-completions

Uninstalls Scala CLI completions from your shell.

For detailed documentation refer to our website: https://scala-cli.virtuslab.org/docs/commands/completions

MUST have options

--power

Allows to use restricted & experimental features

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--rc-file

Path to *rc file, defaults to .bashrc or .zshrc depending on shell

--banner

Custom banner in comment placed in rc file

--name

Custom completions name

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning


update command

IMPLEMENTATION specific for Scala Runner specification.

Updates Scala CLI. Works only when installed with the installation script. If Scala CLI was installed with an external tool, refer to its update methods.

For detailed installation instructions refer to our website: https://scala-cli.virtuslab.org/install

MUST have options

--power

Allows to use restricted & experimental features

Implementantation specific options

--usage

Print usage and exit

--help

Print help message and exit

Aliases: -h ,-help

--help-full

Print help message, including hidden options, and exit

Aliases: --full-help ,-help-full ,-full-help

--verbose

Increase verbosity (can be specified multiple times)

Aliases: -v ,-verbose

--interactive

Interactive mode

Aliases: -i

--actions

Enable actionable diagnostics

--quiet

Decrease logging verbosity

Aliases: -q

--progress

Use progress bars

--suppress-experimental-feature-warning

Suppress warnings about using experimental features

Aliases: --suppress-experimental-warning

--binary-name

Binary name

--bin-dir

Binary directory

--force

Force update Scala CLI if it is outdated

Aliases: -f

--is-internal-run

--gh-token

A github token used to access GitHub. Not needed in most cases.