Replace gccemacs with pure gtk variant

cachix/mjlbach.nix

@@ -0,0 +1,7 @@
+{
+  nix = {
+    binaryCaches = [ "https://mjlbach.cachix.org" ];
+    binaryCachePublicKeys =
+      [ "mjlbach.cachix.org-1:dR0V90mvaPbXuYria5mXvnDtFibKYqYc2gtl9MWSkqI=" ];
+  };
+}

cachix/nix-community.nix

@@ -1,8 +0,0 @@
-{
-  nix = {
-    binaryCaches = [ "https://nix-community.cachix.org" ];
-    binaryCachePublicKeys = [
-      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
-    ];
-  };
-}

configuration.nix

@@ -105,7 +105,7 @@
     ./modules/periodic.nix
     ./modules/power.nix
     ./modules/cachix.nix
-    ./overlays/emacs-overlay.nix
+    ./overlays/emacs.nix
   ];
 
 }

overlays/emacs-overlay.nix

@@ -1,7 +0,0 @@
-{
-  nixpkgs.overlays = [
-    (import (builtins.fetchTarball {
-      url = https://github.com/nix-community/emacs-overlay/archive/master.tar.gz;
-    }))
-  ];
-}

overlays/emacs.nix

@@ -0,0 +1,8 @@
+{
+  nixpkgs.overlays = [
+    (import (builtins.fetchTarball {
+      url =
+        "https://github.com/mjlbach/emacs-pgtk-nativecomp-overlay/archive/master.tar.gz";
+    }))
+  ];
+}