devilspie2: add module

[dawidsowa]

Description

Adds Devilspie2 as a service.

It's useful for window managers with limited options for windows rules, such as mutter (gnome).

Checklist

• Change is backwards compatible.

• Code formatted with ./format.

• Code tested through nix-shell --pure tests -A run.all.

• Test cases updated/added. See example.

• Commit messages are formatted like

  {component}: {description}
  
  {long description}
  

  See CONTRIBUTING for more information and recent commit messages for examples.

• If this PR adds a new module

  • Added myself as module maintainer. See example.

  • Added myself and the module files to .github/CODEOWNERS.

[berbiche]

LGTM.
If you could add a simple test like the one from sxhkd it would be great 👍

[stale]

Thank you for your contribution! I marked this pull request as stale due to inactivity. If this remains inactive for another 7 days, I will close this PR. Please read the relevant sections below before commenting.

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[sumnerevans]

Reopening. Looks like this was pretty close to done.

[sumnerevans]

Just a couple of nits. Sorry for the delay getting back to you on this!

[sumnerevans]

I feel like these tests can be combined into one, but I think it would be fine to leave separate as well.

[berbiche]

I agree, these tests should be combined.

[berbiche]

Everything looks good 😄.

Would you mind merging the tests together?
While these tests should be independent, the nature of the test utility makes it that running a test and evaluating it is non-trivial, increasing the time it takes to evaluate the entire test suite.

[berbiche]

I agree, these tests should be combined.

[hpfr]

According to the devilspie2 website, it looks like the current maintainer is looking for a new maintainer, and the last commit was two years ago. Furthermore Gnome has defaulted to Wayland for a while now, and I believe this only works on X. I'm not sure how long Gnome plans to support X11, but the future of this utility is not looking good at the moment?

So you could probably close this if @dawidsowa doesn't happen to come back to it.

[berbiche]

Thanks, LGTM!