nixpkgs/pkgs/desktops/gnome/gdk-pixbuf-cache-builder.nix
2024-09-18 01:00:07 +02:00

37 lines
916 B
Nix

{
runCommand,
gdk-pixbuf,
lib,
stdenv,
buildPackages,
}:
{
extraLoaders,
}:
let
# Get packages to generate the cache for. We always include gdk-pixbuf.
loaderPackages = [
gdk-pixbuf
] ++ extraLoaders;
in
# Generate the cache file by running gdk-pixbuf-query-loaders for each
# package and concatenating the results.
runCommand "gdk-pixbuf-loaders.cache" {
preferLocalBuild = true;
} ''
(
for package in ${lib.escapeShellArgs loaderPackages}; do
module_dir="$package/${gdk-pixbuf.moduleDir}"
if [[ ! -d "$module_dir" ]]; then
echo "Error: gdkPixbufCacheBuilder: Passed package ''${package} does not contain GdkPixbuf loaders in ${gdk-pixbuf.moduleDir}." 1>&2
exit 1
fi
GDK_PIXBUF_MODULEDIR="$module_dir" \
${stdenv.hostPlatform.emulator buildPackages} ${gdk-pixbuf.dev}/bin/gdk-pixbuf-query-loaders
done
) > "$out"
''