fix(haskell): install Haskell libraries

[klezm]

As discussed in devcontainers-contrib/features/issues/584 you can install either executables or libraries with Cabal. This PR fixes devcontainers-contrib/features/issues/584 and adds the option to install libraries besides executables.

[klezm]

Here is the original PR devcontainers-contrib/features/pull/600

[koralowiec]

As you introduce a new option to the feature (globalLibraries), I would like to have a test scenario for that - It should verify whether the packages are installed as libraries

[klezm]

Both just test-scenario haskell test_libraries and just test haskell succeed when I run them locally.
Running the test via GitHub Actions throws the error ghc: command not found though.

(GitHub Copilot suggested to "free up disk space on the runner to ensure enough space for file operations.")

[koralowiec]

Yeah, test passes locally

Indeed, it seems that the issue may be the lack of disk space - 3rd line here (ref):

[2024-11-01T11:54:09.389Z] #14 83.60 [ Error ] [�]8;;[https://errors.haskell.org/messages/GHCup-00080�\GHCup](https://errors.haskell.org/messages/GHCup-00080%1B/GHCup)
[2024-11-01T11:54:09.523Z] -00080�]8;;�\] Failed to merge file tree from /home/vscode/.cache/ghcup/tmp/ghcup-e8a428df65a662cd/home/vscode/.local/share/ghcup/ghc/9.4.8 to /home/vscode/.local/share/ghcup/ghc/9.4.8 
#14 83.60 [ ...   ] exception was: <file descriptor: 18>: hPutBuf: resource exhausted (No space left on device)
#14 83.60 [ ...   ] ...you may need to delete /home/vscode/.local/share/ghcup/ghc/9.4.8 manually. Make sure it's gone.
#14 83.60 [ Error ] Also check the logs in /home/vscode/.cache/ghcup/logs

If I understand currently, right now we have 4 different packages set for the scenario (here). I think that we can reduce the number to just 2 libraries. Also, can we install more lightweight ones? Maybe that will help reduce the disk usage

[klezm]

hspec has QuickCheck and HUnit besides countless other dependencies anyways.
For testing it doesn't matter which library I install. So I'll search for one that has minimum dependencies.

To free up space on the action runner I used this action once and it worked fine for me. It also allows filtering for what to delete.
https://github.com/marketplace/actions/free-disk-space-ubuntu
This action takes some time though!

[koralowiec]

I check out that GitHub Action! Thanks for suggesting it

[koralowiec]

I included the GitHub Action in the Workflow (more context in #69). Could you please rebase your branch?

[klezm]

Those are some small Haskell packages we could use for testing. I'll go with stm as it is the smallest with no dependencies at all

• stm no deps
  • import Control.Concurrent.STM"
• HUnit deps: call-stack
  • import Test.HUnit"
• QuickCheck deps: splitmix random
  • import Test.QuickCheck"
• async deps: os-string hashable
  • import Control.Concurrent.Async"
• text no deps but long build time!
  • import Data.Text"

[koralowiec]

Thanks for your contribution! LGTM