haskellPackages: reflect changed libdir location for hadrian built GHCs

[sternenseemann]

Description of changes

With hadrian ghc's libdir will be $out/lib/${targetPrefix}ghc-${version}/lib instead of $out/lib/${targetPrefix}ghc-${version}. This is relatively inconsequential for us, since we assemble our package dbs manually in most cases and we thus can register libraries located anywhere.

However, for ghcWithPackages we symlink our libraries into the same location as the package db shipped with GHC and run ghc-pkg recache. For this to work, the installation location of the libraries need to mirror GHC's libdir. This is what this PR does.

To facilitate this, haskellPackages.mkDerivation has been refactored a bit. It is best to review these commit by commit. If everything is done correctly, this PR should cause zero rebuilds.

Fixes #211608. cc @locallycompact for testing.

• haskellPackages no rebuilds
• pkgsCross.aarch64-multiplatform.haskellPackages no rebuilds
• ghcHEAD withPackages
• ghc8102Binary musl withPackages
• ghc8107Binary musl withPackages
• ghc924Binary musl withPackages
• ghcHEAD ordinary package compilation
• no rebuilds haskellPackages x86_64-darwin
• no rebuilds pkgsStatic.haskellPackages

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 23.05 Release Notes (or backporting 22.11 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
  • (Release notes changes) Ran nixos/doc/manual/md-to-db.sh to update generated release notes
• Fits CONTRIBUTING.md.

[locallycompact]

Working for me now.

[sternenseemann]

Need to investigate the darwin rebuilds still.

Edit: Working as intended, affects ghcHEAD – here the bindists used for bootstrapping are using hadrian, so the derivations used for building hadrian change.

[cdepillabout]

I'm not very familiar with what exact changes are necessary now with the Hadrian stuff, but the stuff in this PR seems reasonable.