Revert "systemd: build with cryptsetup and cryptsetup-generators"

[jpdoyle]

Fixes #96479 (hopefully)

This reverts commit 72c8ed0.

Motivation for this change

unstable is blocked by #96479

This is a quick hacky fix only -- there is clearly some strange interaction between systemd-udevd and cryptsetup caused by 72c8ed0.

Things done

I'm currently running

$ nix-build -I "nixpkgs=$(pwd)" nixos/tests/installer.nix -A 'luksroot'

However, my machine is taking a while with it as it is rebuilding systemd. I'll update this PR once it completes.

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Ensured that relevant documentation is up to date
• Fits CONTRIBUTING.md.

[jpdoyle]

$ nix-build -I "nixpkgs=$(pwd)" nixos/tests/installer.nix -A 'luksroot'

^ This succeeded, so I'm willing to say that this revert fixes the issue.

[doronbehar]

Merge conflicts already?

[FRidh]

Reverting is the last resort. In this case, it is likely also problematic (see #96479 (comment)). There was already some fixing up required to get where we are at now.

[flokli]

Merge conflicts already?

It seems staging-next ended up in master, which included a systemd bump and some refactor of the derivation. However, I'm not very keen on reverting this. There's the whole systemd-cryptsetup-generator derivation, which would need to be brought back as well.

I started some investigation, will comment in the original issue.

[flokli]

Closing in favor of #97008.