Feature request: granular v2-clean

[TeofilC]

Motivation
As far as I know cabal currently only supports wiping out all build artefacts.
Yet, I'm often in a situation where I only want to do this to a package or component.

This can be worked around by doing something like rm -r dist-newstyle/$PACKAGE, but it would be nice if cabal-install supported this directly.

Proposal
cabal clean when not given any further arguments stays as it is.

cabal clean [targets] wipes out only the build artefacts for targets.

If this sounds reasonable I'd be happy to give implementing it a go.

[gbaz]

Seems reasonable enough. My one question/concern would be the proper behavior if one is cleaning something lower in the build tree -- I'd think that "clean" would have to calculate that it needs to also clean the things dependent on it -- i.e. if one has a library, with a dependent executable, cleaning the lib would necessarily also mean cleaning the exe.

[jneira]

This could be aligned with some discussion around #7851 about implementing cabal clean script.sh

[bacchanalia]

This overlaps directly with the work I'm doing right now on scripts as is affects both how targets are calculated and the clean command.

[michaelpj]

Dupe? #7506

[TeofilC]

What's the procedure for duplicate tickets? Should this be closed in favour of the pre-existing one?

[Mikolaj]

Duplicate of #7506

[Mikolaj]

@TeofilC: if you are satisfied the other ticket covers your needs, please do close this one and keep the discussion/work alive on the other one. Thank you for your feedback!

[TeofilC]

Sounds good to me!