Feature id and version

ghcr.io/devcontainers-contrib/features/haskell:2

Devcontainer base Image

mcr.microsoft.com/devcontainers/base:jammy

What happened?

Packages (e.g. hspec) passed to globalPackages are only installed as executables and not as libraries, which often is necessary. For them to be accessible as libraries the --lib flag is missing in the cabal install command here: https://github.com/devcontainers-contrib/features/blob/9a1d24b27b2d1ea8916ebe49c9ce674375dced27/src/haskell/install.sh#L89

For more info on cabal install --lib and the difference between libraries and executables see: haskell/cabal#6481 and cabal.readthedocs.io [1], [2]

Maybe an additional option (e.g. globalLibraries) for this feature would be the best.

Relevant log output

No response