nixpkgs/pkgs/by-name/gn/gnome-shell/shew-gir-path.patch

--- a/subprojects/libshew/src/meson.build
+++ b/subprojects/libshew/src/meson.build
@@ -15,7 +15,7 @@ shew_sources = [
 libshew = library(full_name,
   sources: shew_sources,
   dependencies: [gtk_dep],
-  install_dir: pkglibdir,
+  install_dir: get_option('prefix') / pkglibdir,
   install: true,
 )