nixos/home/desktop/pkgs/delta-icon-theme/default.nix

{
  stdenvNoCC,
  fetchFromGitHub,
  gtk3,
}:
stdenvNoCC.mkDerivation rec {
  pname = "delta-icon-theme";
  version = "194df98e422c0a81912194808b76712bf5d78803";
  dontBuild = true;

  src = fetchFromGitHub {
    owner = "Delta-Icons";
    repo = "linux";
    rev = version;
    sha256 = "sha256-SSkI5Aj/TTHfDRYCWe7Ell6cWvPmBUeO/AC4xRrEUvU=";
  };

  nativeBuildInputs = [gtk3];

  dontDropIconThemeCache = true;

  installPhase = ''
    runHook preInstall
    mkdir -p $out/share/icons
    mv Delta $out/share/icons

    for theme in $out/share/icons/*; do
      gtk-update-icon-cache --force $theme
    done

    runHook postInstall
  '';
}