Add lix specialisation

flake.nix

@@ -45,6 +45,20 @@
         flake-utils.follows = "flake-utils";
       };
     };
+
+    lix = {
+      type = "git";
+      url = "https://[email protected]/lix-project/lix";
+      ref = "refs/tags/2.90-beta.1";
+      flake = false;
+    };
+
+    lix-module = {
+      type = "git";
+      url = "https://git.lix.systems/lix-project/nixos-module";
+      inputs.lix.follows = "lix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
   outputs =
@@ -56,6 +70,7 @@
     , pre-commit-hooks
     , hosts
     , ecsls
+    , lix-module
     , ...
     }:
     let
@@ -81,7 +96,7 @@
           useUserPackages = true;
           users.${username} = import ./home;
           extraSpecialArgs = {
-            inherit username system ecsls pkgs;
+            inherit pkgs username system ecsls lix-module;
           };
         };
       };

system/default.nix

@@ -1,6 +1,9 @@
 { config, username, pkgs, ... }:
 {
-  imports = [ ./polkit.nix ];
+  imports = [
+    ./polkit.nix
+    ./lix.nix
+  ];
 
   boot = {
     consoleLogLevel = 0;

system/lix.nix

@@ -0,0 +1,15 @@
+{ lix-module, ... }:
+{
+  specialisation = {
+    lix.configuration = {
+      imports = [ lix-module.nixosModules.default ];
+    };
+
+    nix.settings = {
+      extra-substituters = [ "https://cache.lix.systems" ];
+      trusted-public-keys = [
+        "cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o="
+      ];
+    };
+  };
+}