Nixpkgs version

• Unstable (25.05)

Steps to reproduce

Relevant config excerpt:

    services = {
      printing = {
        drivers = [ pkgs.canon-cups-ufr2 ];
      };
    };

Can Hydra reproduce this build failure?

The last build job was manually cancelled.

Link to Hydra build job

Hydra returns an http/500 error when searching for package

Relevant log output

checking for references to /build/ in /nix/store/nwxj5wdhp35b2niwl6xw4qapsngbkfnn-canon-cups-ufr2-6.00...
patching script interpreter paths in /nix/store/nwxj5wdhp35b2niwl6xw4qapsngbkfnn-canon-cups-ufr2-6.00
stripping (with command strip and flags -S -p) in  /nix/store/nwxj5wdhp35b2niwl6xw4qapsngbkfnn-canon-cups-ufr2-6.00/lib /nix/store/nwxj5wdhp35b2niwl6xw4qapsngbkfnn-canon-cups-ufr2-6.00/bin
ERROR: noBrokenSymlinks: the symlink /nix/store/nwxj5wdhp35b2niwl6xw4qapsngbkfnn-canon-cups-ufr2-6.00/lib/libuictlufr2r.so points to a missing target /nix/store/nwxj5wdhp35b2niwl6xw4qapsngbkfnn-canon-cups-ufr2-6.00/lib/libuictlufr2r.so.1.0.0
ERROR: noBrokenSymlinks: the symlink /nix/store/nwxj5wdhp35b2niwl6xw4qapsngbkfnn-canon-cups-ufr2-6.00/lib/libuictlufr2r.so.1 points to a missing target /nix/store/nwxj5wdhp35b2niwl6xw4qapsngbkfnn-canon-cups-ufr2-6.00/lib/libuictlufr2r.so.1.0.0
ERROR: noBrokenSymlinks: found 2 dangling symlinks and 0 reflexive symlinks

Additional context

Full derivation build log attached.
ufr2-buildlog.txt

System metadata

nix-shell -p nix-info --run "nix-info -m"

• system: "x86_64-linux"
• host os: Linux 6.12.12, NixOS, 25.05 (Warbler), 25.05.20250204.799ba5b
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.24.12
• channels(root): "nixos"
• nixpkgs: /nix/store/k8nkf470zpidpa5nh76lh2x6rxfzpwa4-source

Notify maintainers

@lluchs

Note for maintainers: Please tag this issue in your pull request description. (i.e. Resolves #ISSUE.)

I assert that this issue is relevant for Nixpkgs

• I assert that this is a bug and not a support request.
• I assert that this is not a duplicate of an existing issue.
• I assert that I have read the NixOS Code of Conduct and agree to abide by it.

Is this issue important to you?

Add a 👍 reaction to issues you find important.