55 lines
1.8 KiB
Nix
55 lines
1.8 KiB
Nix
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{ pkgs, lib, stdenv, fetchzip }:
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let
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buildGnomeExtension = {
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# Every gnome extension has a UUID. It's the name of the extension folder once unpacked
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# and can always be found in the metadata.json of every extension.
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uuid,
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name,
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pname,
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description,
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# extensions.gnome.org extension URL
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link,
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# Extension version numbers are integers
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version,
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sha256,
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# Hex-encoded string of JSON bytes
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metadata,
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}:
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stdenv.mkDerivation {
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inherit pname;
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version = builtins.toString version;
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src = fetchzip {
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url = "https://extensions.gnome.org/extension-data/${
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builtins.replaceStrings [ "@" ] [ "" ] uuid
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}.v${builtins.toString version}.shell-extension.zip";
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inherit sha256;
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stripRoot = false;
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# The download URL may change content over time. This is because the
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# metadata.json is automatically generated, and parts of it can be changed
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# without making a new release. We simply substitute the possibly changed fields
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# with their content from when we last updated, and thus get a deterministic output
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# hash.
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extraPostFetch = ''
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echo "${metadata}" | base64 --decode > $out/metadata.json
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'';
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};
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buildCommand = ''
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mkdir -p $out/share/gnome-shell/extensions/
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cp -r -T $src $out/share/gnome-shell/extensions/${uuid}
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'';
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meta = {
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description = builtins.head (lib.splitString "\n" description);
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longDescription = description;
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homepage = link;
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license = lib.licenses.gpl2Plus; # https://wiki.gnome.org/Projects/GnomeShell/Extensions/Review#Licensing
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maintainers = with lib.maintainers; [ piegames ];
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};
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# Store the extension's UUID, because we might need it at some places
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passthru.extensionUuid = uuid;
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};
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in
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lib.makeOverridable buildGnomeExtension
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