feat(infra): Switch to lix

hive.nix

@@ -69,7 +69,10 @@ in
     { name, nodeMeta, ... }:
     {
       # Import the default modules
-      imports = [ ./modules ];
+      imports = [
+        ./modules
+        (import "${sources.lix-module}/module.nix" { inherit (sources) lix; })
+      ];
 
       # Include default secrets
       age-secrets.sources = [ ./machines/${name}/secrets ];
@@ -87,6 +90,11 @@ in
           dates = "weekly";
           options = "--delete-older-than 7d";
         };
+
+        settings = {
+          extra-substituters = [ "https://cache.lix.systems" ];
+          trusted-public-keys = [ "cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o=" ];
+        };
       };
 
       # Allow unfree packages

npins/sources.json

@@ -89,6 +89,30 @@
       "url": "https://github.com/JulienMalka/Linkal/archive/085630bf369b68d2264baca020efc94c877d78e6.tar.gz",
       "hash": "0m426vjk7mjyp1gd1dsnnn5xkplsqs0ksawbmhza6fycsmavc3cx"
     },
+    "lix": {
+      "type": "GitRelease",
+      "repository": {
+        "type": "Git",
+        "url": "https://git.lix.systems/lix-project/lix.git"
+      },
+      "pre_releases": true,
+      "version_upper_bound": null,
+      "version": "2.90-beta.1",
+      "revision": "b6799ab0374a8e1907a48915d3187e07da41d88c",
+      "url": null,
+      "hash": "0d0dbn08pmrf7zlkihiyagcpy9ywdr14r6brqrjg47aqcjisaia4"
+    },
+    "lix-module": {
+      "type": "Git",
+      "repository": {
+        "type": "Git",
+        "url": "https://git.lix.systems/lix-project/nixos-module.git"
+      },
+      "branch": "main",
+      "revision": "87b7b7e4bd936301b139e472589d1966b136f45f",
+      "url": null,
+      "hash": "08sr2qkjn1j7b9wyvisax3bzwgsd3p8xxzri2vvb9rdbbbp0fwx5"
+    },
     "metis": {
       "type": "Git",
       "repository": {