FR Understand proguard-only projects

[ZacSweers]

Some projects contain only proguard files used by AGP. Example: https://github.com/artem-zinnatullin/RxJavaProGuardRules

Might be tricky as other "unused" projects would still have their proguard files being used. I think a reasonable middle ground is to only ignore them if they only have proguard files included and nothing else.

Alternatively could be handled by an exclusion extension of some sort

[autonomousapps]

Added a 1.0 milestone. This issue is important enough that I consider it a prereq for 1.0 status.

[ZacSweers]

edit - only applicable to android application projects really

[autonomousapps]

@ZacSweers you said

I think a reasonable middle ground is to only ignore them if they only have proguard files included and nothing else.

Whereas I was thinking, if a project only contains proguard rules, always consider it used. Or am I misunderstanding you?

Relatedly, if a project only contains proguard rules, could it be compileOnly? Or if that doesn't work, releaseImplementation instead of implementation? (since it is only relevant on build types where minifyEnabled is true.)