Compton: Init at 0.1_beta2

[SCOTT-HAMILTON]

Motivation for this change

Needed Compton for a rice.

Things done

Packaged Compton 0.1_beta2, couldn't build the doc.

• 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.

[symphorien]

I think compton is available in nixpkgs under the new name picom

[SCOTT-HAMILTON]

Oh. Sorry, didn't noticed. Also this one isn't upstream Compton, it's a fork. But it provides a new blur method. Should maybe rename it compton-kawase. (name of the new blur method). But in that case I'm not sure if nixpkgs is the right place for it.

[jtojnar]

Yeah, it was renamed in #74831

[jtojnar]

For dual-kawase, there is this pull request against picom: yshui/picom#382

[Philipp-M]

Anyone interested in using a kawase-blur-activated version can simply use an overlay like this:

{
  nixpkgs.overlays = [
    # add dual kawase blur and rounded corners to picom
    (self: super: {
      picom = super.picom.overrideAttrs (old: {
        src = builtins.fetchTarball {
          url = "https://github.com/ibhagwan/picom/archive/82ecc90b51fa2489d26ef3f08abe1f06efcb53d8.tar.gz";
          sha256 = "0pk1711kd6qqjhghrc73ldjl0m82p53yiiz5acyxvaw55hvm558h";
        };
      });
    })
  ];
}

Sooner or later it will be merged to master anyway so I think we should stick with the mainline picom and probably close this PR?

[SCOTT-HAMILTON]

Fair enough, I close it.