docsets.gtk: init

hosts/common/programs/docsets.nix

@@ -60,6 +60,7 @@ in {
   ];
   sane.programs.docsets.config.pkgs = with pkgs; [
     # packages which ship docsets natively:
+    docsets.gtk
     docsets.nix-builtins
     docsets.nixpkgs-lib
     docsets.rust-std

pkgs/by-name/docsets/gtk/package.nix

@@ -0,0 +1,12 @@
+{
+  rtfm,
+  runCommandLocal,
+}:
+# rtfm docset viewer actually ships Crystal and Gtk docsets (the latter of which includes several deps like Gdk, Pango, etc),
+# so just extract those.
+# N.B.: `rtfm` depends on `webkitgtk_6_0` -- costly! TODO: may be possible to set `buildTargets = [ "docsets" ]` to avoid the gui deps.
+# TODO: rtfm's docsets don't include Info.plist: is that a problem?
+runCommandLocal "gtk.docset" { } ''
+  mkdir -p $out/share/docsets
+  cp -R ${rtfm}/share/rtfm/docsets/Gtk.docset $out/share/docsets/gtk.docset
+''