Integrate sbt into setup-java or create a new one called setup-sbt for better support for self-hosted runners 🚀

[dimisjim]

Description:
Seems that, currently, sbt is part of the github-provided virtual environments, and not in setup-java

Justification:
Having sbt installed in the github.com-provided runners is a bit problematic for users of self-hosted runners as it causes false expectations for this setup-java action, given that sbt is actually something that needs java to function. Thus installation of it would make much more sense to happen in this action, or alternatively in another new one, called setup-sbt or setup-scala (actually, an action with this name already exists and depends on a not very stable project, called jabba, see olafurpg/setup-scala#48 for more background on this)

I had previously opened: actions/starter-workflows#1309 which I have now closed, to keep comms here exclusively.

Our current, in-house workaround is to use sdkman.io to install everything manually in our self-hosted runners.

Are you willing to submit a PR?
Yes

[joschi]

Why wouldn't you use https://github.com/dwijnand/sbt-extras for this, similar to how it is typically done in Gradle projects (using the Gradle wrapper script)?

[dimisjim]

We have already used a script, like the one you linked.

This issue refers to native github actions, but thanks for sharing anyway 👍

[dmitry-shibanov]

Hello @dimisjim. Thank you for your report. We do not plan to add functionality in the setup-java action to install sbt. The main purpose of the setup-java action is to install java from available distributions. Could you please check existing actions for sbt ?

[guizmaii]

@dimisjim sbt has been added to the by-default-installed softwares of the latest OS versions supported in Github Actions (see https://github.com/actions/virtual-environments#available-environments for the OS versions):

• macOS 11 (which is macos-latest): https://github.com/actions/virtual-environments/blob/main/images/macos/macos-11-Readme.md#project-management
• Windows Server 2019 (which is windows-latest): https://github.com/actions/virtual-environments/blob/main/images/win/Windows2019-Readme.md#project-management
• Ubuntu 20.04 (which is ubuntu-latest): https://github.com/actions/virtual-environments/blob/main/images/linux/Ubuntu2004-Readme.md#project-management

[fmeriaux]

+1

it would be interesting to integrate the sbt cache like mvn or gradle https://github.com/actions/cache/blob/main/examples.md#scala---sbt

[joschi]

@fmeriaux Go for it. 😉

setup-java/src/cache.ts

Lines 23 to 36 in f69f00b

	const supportedPackageManager: PackageManager[] = [
	{
	id: 'maven',
	path: [join(os.homedir(), '.m2', 'repository')],
	// https://github.com/actions/cache/blob/0638051e9af2c23d10bb70fa9beffcad6cff9ce3/examples.md#java---maven
	pattern: ['**/pom.xml']
	},
	{
	id: 'gradle',
	path: [join(os.homedir(), '.gradle', 'caches'), join(os.homedir(), '.gradle', 'wrapper')],
	// https://github.com/actions/cache/blob/0638051e9af2c23d10bb70fa9beffcad6cff9ce3/examples.md#java---gradle
	pattern: ['**/*.gradle*', '**/gradle-wrapper.properties']
	}
	];

[fmeriaux]

@fmeriaux Go for it. 😉

setup-java/src/cache.ts

Lines 23 to 36 in f69f00b

	const supportedPackageManager: PackageManager[] = [
	{
	id: 'maven',
	path: [join(os.homedir(), '.m2', 'repository')],
	// https://github.com/actions/cache/blob/0638051e9af2c23d10bb70fa9beffcad6cff9ce3/examples.md#java---maven
	pattern: ['**/pom.xml']
	},
	{
	id: 'gradle',
	path: [join(os.homedir(), '.gradle', 'caches'), join(os.homedir(), '.gradle', 'wrapper')],
	// https://github.com/actions/cache/blob/0638051e9af2c23d10bb70fa9beffcad6cff9ce3/examples.md#java---gradle
	pattern: ['**/*.gradle*', '**/gradle-wrapper.properties']
	}
	];

done #302

[laughedelic]

FYI: https://github.com/coursier/cache-action handles sbt cache (also Mill, Ammonite, and is highly configurable).

[dmitry-shibanov]

Hello everyone. The new version was released with sbt caching support.

[dmitry-shibanov]

Hello everyone. I'm going to close the issue because the new version with sbt caching support was released and the major tag was updated. If you have any concerns feel free to ping us.