build(flake): get rid of duplicate inputs

What is systems/default and why does *everyone* depend on it?

flake.lock

@@ -9,7 +9,9 @@
         "nixpkgs": [
           "nixpkgs"
         ],
-        "systems": "systems"
+        "systems": [
+          "systems"
+        ]
       },
       "locked": {
         "lastModified": 1715290355,
@@ -85,7 +87,9 @@
     },
     "flake-utils": {
       "inputs": {
-        "systems": "systems_2"
+        "systems": [
+          "systems"
+        ]
       },
       "locked": {
         "lastModified": 1710146030,
@@ -101,6 +105,21 @@
         "type": "github"
       }
     },
+    "flakey-profile": {
+      "locked": {
+        "lastModified": 1712898590,
+        "narHash": "sha256-FhGIEU93VHAChKEXx905TSiPZKga69bWl1VB37FK//I=",
+        "owner": "lf-",
+        "repo": "flakey-profile",
+        "rev": "243c903fd8eadc0f63d205665a92d4df91d42d9d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "lf-",
+        "repo": "flakey-profile",
+        "type": "github"
+      }
+    },
     "gitignore": {
       "inputs": {
         "nixpkgs": [
@@ -143,6 +162,50 @@
         "type": "github"
       }
     },
+    "lix": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1714955862,
+        "narHash": "sha256-REWlo2RYHfJkxnmZTEJu3Cd/2VM+wjjpPy7Xi4BdDTQ=",
+        "ref": "refs/tags/2.90-beta.1",
+        "rev": "b6799ab0374a8e1907a48915d3187e07da41d88c",
+        "revCount": 15501,
+        "type": "git",
+        "url": "https://git@git.lix.systems/lix-project/lix"
+      },
+      "original": {
+        "ref": "refs/tags/2.90-beta.1",
+        "type": "git",
+        "url": "https://git@git.lix.systems/lix-project/lix"
+      }
+    },
+    "lix-module": {
+      "inputs": {
+        "flake-utils": [
+          "flake-utils"
+        ],
+        "flakey-profile": "flakey-profile",
+        "lix": [
+          "lix"
+        ],
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1715885250,
+        "narHash": "sha256-IUFYAl3158Ig5vySnRBHoPReb2/S97bjodCo6FhzJv4=",
+        "ref": "refs/heads/main",
+        "rev": "53d713eb486f21d653af3ef3528e9a19ecfc45e5",
+        "revCount": 81,
+        "type": "git",
+        "url": "https://git.lix.systems/lix-project/nixos-module"
+      },
+      "original": {
+        "type": "git",
+        "url": "https://git.lix.systems/lix-project/nixos-module"
+      }
+    },
     "nix-index-database": {
       "inputs": {
         "nixpkgs": [
@@ -194,22 +257,6 @@
         "type": "github"
       }
     },
-    "nixpkgs-stable": {
-      "locked": {
-        "lastModified": 1710695816,
-        "narHash": "sha256-3Eh7fhEID17pv9ZxrPwCLfqXnYP006RKzSs0JptsN84=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "614b4613980a522ba49f0d194531beddbb7220d3",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-23.11",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nixpkgs-unstable": {
       "locked": {
         "lastModified": 1715961556,
@@ -226,22 +273,6 @@
         "type": "github"
       }
     },
-    "nixpkgs_2": {
-      "locked": {
-        "lastModified": 1710765496,
-        "narHash": "sha256-p7ryWEeQfMwTB6E0wIUd5V2cFTgq+DRRBz2hYGnJZyA=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "e367f7a1fb93137af22a3908f00b9a35e2d286a7",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixpkgs-unstable",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nur": {
       "locked": {
         "lastModified": 1716156347,
@@ -261,8 +292,12 @@
       "inputs": {
         "flake-compat": "flake-compat",
         "gitignore": "gitignore",
-        "nixpkgs": "nixpkgs_2",
+        "nixpkgs": [
-        "nixpkgs-stable": "nixpkgs-stable"
+          "nixpkgs-unstable"
+        ],
+        "nixpkgs-stable": [
+          "nixpkgs"
+        ]
       },
       "locked": {
         "lastModified": 1715870890,
@@ -284,31 +319,20 @@
         "disko": "disko",
         "flake-utils": "flake-utils",
         "home-manager": "home-manager",
+        "lix": "lix",
+        "lix-module": "lix-module",
         "nix-index-database": "nix-index-database",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs",
         "nixpkgs-unstable": "nixpkgs-unstable",
         "nur": "nur",
         "pre-commit-hooks": "pre-commit-hooks",
+        "systems": "systems",
         "website": "website"
       }
     },
     "systems": {
-      "locked": {
+      "flake": false,
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
-    },
-    "systems_2": {
       "locked": {
         "lastModified": 1681028828,
         "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",

flake.nix

@@ -1,21 +1,28 @@
 {
   nixConfig = {
     commit-lockfile-summary = "build(flake): update inputs";
+
+    extra-substituters = [
+      "https://cache.lix.systems"
+    ];
+
+    extra-trusted-public-keys = [
+      "cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o="
+    ];
   };
 
   inputs = {
-    flake-utils.url = "github:numtide/flake-utils";
     nixos-hardware.url = "github:NixOS/nixos-hardware";
     nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixos-unstable";
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.11";
     nur.url = "github:nix-community/NUR";
-    pre-commit-hooks.url = "github:cachix/pre-commit-hooks.nix";
 
     agenix = {
       url = "github:ryantm/agenix";
       inputs = {
         home-manager.follows = "home-manager";
         nixpkgs.follows = "nixpkgs";
+        systems.follows = "systems";
       };
     };
 
@@ -24,16 +31,48 @@
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
+    flake-utils = {
+      url = "github:numtide/flake-utils";
+      inputs.systems.follows = "systems";
+    };
+
     home-manager = {
       url = "github:nix-community/home-manager/release-23.11";
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
+    lix = {
+      url = "git+https://git@git.lix.systems/lix-project/lix?ref=refs/tags/2.90-beta.1";
+      flake = false;
+    };
+
+    lix-module = {
+      url = "git+https://git.lix.systems/lix-project/nixos-module";
+      inputs = {
+        flake-utils.follows = "flake-utils";
+        lix.follows = "lix";
+        nixpkgs.follows = "nixpkgs";
+      };
+    };
+
     nix-index-database = {
       url = "github:Mic92/nix-index-database";
       inputs.nixpkgs.follows = "nixpkgs";
     };
 
+    pre-commit-hooks = {
+      url = "github:cachix/pre-commit-hooks.nix";
+      inputs = {
+        nixpkgs.follows = "nixpkgs-unstable";
+        nixpkgs-stable.follows = "nixpkgs";
+      };
+    };
+
+    systems = {
+      url = "github:nix-systems/default";
+      flake = false;
+    };
+
     website = {
       url = "github:buffet/website";
       flake = false;

hosts/alice/default.nix

@@ -1,6 +1,7 @@
 {
   agenix,
   home-manager,
+  lix-module,
   nixos-hardware,
   nur,
   pkgs,
@@ -11,6 +12,7 @@
     ./system.nix
     agenix.nixosModules.default
     home-manager.nixosModule
+    lix-module.nixosModules.default
     nur.nixosModules.nur
 
     ./borg.nix