nix: add my nix repository as submodule

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "nixexprs"]
+	path = nixexprs
+	url = git@tildegit.org:petrichor/nixexprs.git

configuration.nix

@@ -26,6 +26,9 @@ in {
         };
     };
   };
+  nixpkgs.overlays = [
+    #   (self: super: { libvirt = (import (builtins.fetchTarball "https://github.com/NixOS/nixpkgs/archive/066676b839a217f6b1b5d8ab05842604d33b7258.tar.gz") {}).libvirt; })
+  ];
 
   nix = {
     autoOptimiseStore = true;

home/jez/home.nix

@@ -23,12 +23,15 @@ in {
   nixpkgs.config = {
     allowUnfree = true;
     joypixels.acceptLicense = true;
-    packageOverrides = pkgs: {
-      nur = import (builtins.fetchTarball
-        "https://github.com/nix-community/NUR/archive/master.tar.gz") {
-          inherit pkgs;
-        };
-    };
+    packageOverrides = pkgs:
+      let mypkgs = import ../../nixexprs { inherit pkgs; };
+      in {
+        nur = import (builtins.fetchTarball
+          "https://github.com/nix-community/NUR/archive/master.tar.gz") {
+            inherit pkgs;
+          };
+        inherit (mypkgs) dart-sass;
+      };
   };
 
   home.username = "jez";

nixexprs

@@ -0,0 +1 @@
+Subproject commit 9febddb1c3603b5b2970eb5700260e63a0ef2d1e