Given the current state of the repository, you can add this derivation
to `services.mattermost.plugins` array (but modify as needed):

.. codeblock:: nix

	pkgs.buildGoModule {
  	  name = "mattermost-plugin-unifiedpush";
  	  src = pkgs.fetchFromSourcehut {
    	 owner = "~thejonny";
    	 repo = "mattermost-plugin-unifiedpush";
    	 rev = "dc177958d1a79b3846fb99c53878e1798e11960a";
    	 hash = "sha256-ptc2nTN06BE1H4jSkX7+UDe/Xm2ryqDp5ZevbOu/SMU=";
  	  };
  	  overrideModAttrs = _: {
    	 preBuild = ''
      	substituteInPlace go.mod --replace 'go 1.21.1' 'go 1.21'
      	go mod tidy
    	 '';
  	  };
  	  postBuild = ''
    	 make
  	  '';
  	  installPhase = ''
    	 cp unifiedpush.tar.gz $out
  	  '';
  	  vendorHash = "sha256-S0Lub8wQrpBH9ISpsdR50I/gGmSDWo6Xi5Kl8etGffs=";
	};

Nix cannot parse the patch versions of go.mod files so the patch is
needed at present. go mod tidy is needed due to something about a go.sum
and resolving the Mattermost code (I don’t understand it, but it we go
from errors to working).

--
toastal ไข่ดาว | https://toast.al
PGP: 7944 74B7 D236 DAB9 C9EF  E7F9 5CCE 6F14 66D4 7C9E

This could be as simple as a fetchTarball, if the CI artifacts had a tag
to attach to tho :P I’m sure this is in the works, but I want to use the
plugin now!