Nixpkgs: Kazam package broken on unstable

[madhukar93]

kazam package is broken. It does not start after installation. Looks like missing python3.7 dependency. Seems like a regression of #57660

$ nix-shell -p kazam
$ kazam
Traceback (most recent call last):
  File "/nix/store/bqjm7rv0bzsf6vb4r46947rai7hf130c-python3.7-pygobject-3.32.1/lib/python3.7/site-packages/gi/importer.py", line 138, in load_module
    introspection_module = get_introspection_module(namespace)
  File "/nix/store/bqjm7rv0bzsf6vb4r46947rai7hf130c-python3.7-pygobject-3.32.1/lib/python3.7/site-packages/gi/module.py", line 265, in get_introspection_module
    module = IntrospectionModule(namespace, version)
  File "/nix/store/bqjm7rv0bzsf6vb4r46947rai7hf130c-python3.7-pygobject-3.32.1/lib/python3.7/site-packages/gi/module.py", line 117, in __init__
    repository.require(namespace, version)
gi.RepositoryError: Typelib file for namespace 'Pango', version '1.0' not found

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/nix/store/9bxmnfv8xxxay00kgab3df7gbs2vzbh2-kazam-1.4.5/bin/..kazam-wrapped-wrapped", line 33, in <module>
    from gi.repository import Gtk
  File "/nix/store/bqjm7rv0bzsf6vb4r46947rai7hf130c-python3.7-pygobject-3.32.1/lib/python3.7/site-packages/gi/importer.py", line 140, in load_module
    raise ImportError(e)
ImportError: Typelib file for namespace 'Pango', version '1.0' not found

Additional context
Add any other context about the problem here.

Metadata
nix-info -m

• system: "x86_64-linux"
• host os: Linux 4.19.78, NixOS, 20.03pre196586.b943338ea58 (Markhor)
• multi-user?: yes
• sandbox: yes
• version: nix-env (Nix) 2.3.1
• channels(root): "nixos-20.03pre196586.b943338ea58, home-manager, nixos-hardware"
• channels(user): ""
• nixpkgs: /nix/var/nix/profiles/per-user/root/channels/nixos

[worldofpeace]

This actually a regression from strictDeps being enabled in buildPythonPackage.
See #56943, fixes are like https://github.com/NixOS/nixpkgs/commit/a203bc741e59fd54475aaa0327acc08efde6a444.

[madhukar93]

thanks, will try to send in a PR

[worldofpeace]

Hmm, I did try fixing this briefly and it appeared it had more issues than this particular one.
Perhaps an update may improve the situation.

[madhukar93]

Then it is probably beyond my abilities to fix :grimacing:
What sort of update?

[worldofpeace]

The issue I ran into was

• https://github.com/hzbd/kazam/issues/20#issuecomment-449975842

Fix was https://github.com/hzbd/kazam/pull/21/, but it appears this tool is abandoned

• https://aur.archlinux.org/packages/kazam#comment-675562

And I don't particularly have patience for abandonware in nixpkgs, especially maintaining them.

[thorstenweber83]

@madhukar93
kazam is now fixed on master.