depot/pkgs/desktops/gnome/extensions/buildGnomeExtension.nix

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{ pkgs, lib, stdenv, fetchzip, nixosTests }:
let
buildGnomeExtension = {
# Every gnome extension has a UUID. It's the name of the extension folder once unpacked
# and can always be found in the metadata.json of every extension.
uuid,
name,
pname,
description,
# extensions.gnome.org extension URL
link,
# Extension version numbers are integers
version,
sha256,
# Hex-encoded string of JSON bytes
metadata,
}:
stdenv.mkDerivation {
pname = "gnome-shell-extension-${pname}";
version = builtins.toString version;
src = fetchzip {
url = "https://extensions.gnome.org/extension-data/${
builtins.replaceStrings [ "@" ] [ "" ] uuid
}.v${builtins.toString version}.shell-extension.zip";
inherit sha256;
stripRoot = false;
# The download URL may change content over time. This is because the
# metadata.json is automatically generated, and parts of it can be changed
# without making a new release. We simply substitute the possibly changed fields
# with their content from when we last updated, and thus get a deterministic output
# hash.
postFetch = ''
echo "${metadata}" | base64 --decode > $out/metadata.json
'';
};
nativeBuildInputs = with pkgs; [ buildPackages.glib ];
buildPhase = ''
runHook preBuild
if [ -d schemas ]; then
glib-compile-schemas --strict schemas
fi
runHook postBuild
'';
installPhase = ''
runHook preInstall
mkdir -p $out/share/gnome-shell/extensions/
cp -r -T . $out/share/gnome-shell/extensions/${uuid}
runHook postInstall
'';
meta = {
description = builtins.head (lib.splitString "\n" description);
longDescription = description;
homepage = link;
license = lib.licenses.gpl2Plus; # https://gjs.guide/extensions/review-guidelines/review-guidelines.html#licensing
platforms = lib.platforms.linux;
maintainers = [ lib.maintainers.honnip ];
};
passthru = {
extensionPortalSlug = pname;
# Store the extension's UUID, because we might need it at some places
extensionUuid = uuid;
tests = {
gnome-extensions = nixosTests.gnome-extensions;
};
};
};
in
lib.makeOverridable buildGnomeExtension