Merge #22309: vim: allow building with gtk3

nixos/modules/services/x11/desktop-managers/gnome3.nix

···
       };
 
       debug = mkEnableOption "gnome-session debug messages";
-    };  
+    };
 
     environment.gnome3.packageSet = mkOption {
       default = null;
···
       description = "Which GNOME 3 package set to use.";
       apply = p: if p == null then pkgs.gnome3 else p;
     };
-    
+
     environment.gnome3.excludePackages = mkOption {
       default = [];
       example = literalExample "[ pkgs.gnome3.totem ]";
···
     hardware.bluetooth.enable = mkDefault true;
     services.xserver.libinput.enable = mkDefault true; # for controlling touchpad settings via gnome control center
     services.udev.packages = [ pkgs.gnome3.gnome_settings_daemon ];
+
+    # If gnome3 is installed, build vim for gtk3 too.
+    nixpkgs.config.vim.gui = "gtk3";
 
     fonts.fonts = [ pkgs.dejavu_fonts pkgs.cantarell_fonts ];
 

pkgs/applications/editors/vim/configurable.nix

···
 # TODO tidy up eg The patchelf code is patching gvim even if you don't build it..
 # but I have gvim with python support now :) - Marc
 args@{ source ? "default", callPackage, fetchurl, stdenv, ncurses, pkgconfig, gettext
-, composableDerivation, writeText, lib, config, glib, gtk2, python, perl, tcl, ruby
+, composableDerivation, writeText, lib, config, glib, gtk2, gtk3, python, perl, tcl, ruby
 , libX11, libXext, libSM, libXpm, libXt, libXaw, libXau, libXmu
 , libICE
 
···
     nativeBuildInputs = [ pkgconfig ];
 
     buildInputs
-      = [ ncurses gtk2 libX11 libXext libSM libXpm libXt libXaw libXau
-          libXmu glib libICE ];
+      = [ ncurses libX11 libXext libSM libXpm libXt libXaw libXau
+          libXmu glib libICE ] ++ (if args.gui == "gtk3" then [gtk3] else [gtk2]);
 
     # most interpreters aren't tested yet.. (see python for example how to do it)
     flags = {
···
     ftNixSupport     = config.vim.ftNix or true;
   };
 
-  #--enable-gui=OPTS     X11 GUI default=auto OPTS=auto/no/gtk/gtk2/gnome/gnome2/motif/athena/neXtaw/photon/carbon
+  #--enable-gui=OPTS     X11 GUI default=auto OPTS=auto/no/gtk/gtk2/gtk3/gnome/gnome2/motif/athena/neXtaw/photon/carbon
     /*
       // edf "gtk_check" "gtk_check" { } #If auto-select GUI, check for GTK default=yes
       // edf "gtk2_check" "gtk2_check" { } #If GTK GUI, check for GTK+ 2 default=yes
···
 
   dontStrip = 1;
 })
-