fix(system): remove nix-alien again

Does not work with custom nixpkgs, and I do not want to add another
nixpkgs input just for nix-alien.

flake.lock

@@ -155,21 +155,6 @@
       }
     },
     "flake-compat_3": {
-      "locked": {
-        "lastModified": 1747046372,
-        "narHash": "sha256-CIVLLkVgvHYbgI2UpXvIIBJ12HWgX+fjA8Xf8PUmqCY=",
-        "owner": "edolstra",
-        "repo": "flake-compat",
-        "rev": "9100a0f413b0c601e0533d1d94ffd501ce2e7885",
-        "type": "github"
-      },
-      "original": {
-        "owner": "edolstra",
-        "repo": "flake-compat",
-        "type": "github"
-      }
-    },
-    "flake-compat_4": {
       "flake": false,
       "locked": {
         "lastModified": 1746162366,
@@ -185,7 +170,7 @@
         "type": "github"
       }
     },
-    "flake-compat_5": {
+    "flake-compat_4": {
       "flake": false,
       "locked": {
         "lastModified": 1696426674,
@@ -346,49 +331,6 @@
         "type": "gitlab"
       }
     },
-    "nix-alien": {
-      "inputs": {
-        "flake-compat": "flake-compat_3",
-        "nix-index-database": "nix-index-database",
-        "nixpkgs": [
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1747293822,
-        "narHash": "sha256-1R3Ro+RQCUUnIFZDObP9/2QBLk3xvgbXU67Qii+YZ8s=",
-        "owner": "thiagokokada",
-        "repo": "nix-alien",
-        "rev": "ea7eb3a76520fa8d92879afb819756ffc0bc629e",
-        "type": "github"
-      },
-      "original": {
-        "owner": "thiagokokada",
-        "repo": "nix-alien",
-        "type": "github"
-      }
-    },
-    "nix-index-database": {
-      "inputs": {
-        "nixpkgs": [
-          "nix-alien",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1746934494,
-        "narHash": "sha256-3n6i+F0sDASjkhbvgFDpPDZGp7z19IrRtjfF9TwJpCA=",
-        "owner": "nix-community",
-        "repo": "nix-index-database",
-        "rev": "e9b21b01e4307176b9718a29ac514838e7f6f4ff",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "nix-index-database",
-        "type": "github"
-      }
-    },
     "nixlib": {
       "locked": {
         "lastModified": 1643502816,
@@ -406,7 +348,7 @@
     },
     "nixos-cosmic": {
       "inputs": {
-        "flake-compat": "flake-compat_4",
+        "flake-compat": "flake-compat_3",
         "nixpkgs": [
           "nixpkgs"
         ],
@@ -530,7 +472,7 @@
     },
     "pre-commit-hooks": {
       "inputs": {
-        "flake-compat": "flake-compat_5",
+        "flake-compat": "flake-compat_4",
         "gitignore": "gitignore",
         "nixpkgs": [
           "nixpkgs"
@@ -560,7 +502,6 @@
         "flake-utils": "flake-utils",
         "home-manager": "home-manager_2",
         "matrix-appservices": "matrix-appservices",
-        "nix-alien": "nix-alien",
         "nixos-cosmic": "nixos-cosmic",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs",

flake.nix

@@ -28,11 +28,6 @@ rec {
 
     flake-utils.url = "github:numtide/flake-utils";
 
-    nix-alien = {
-      url = "github:thiagokokada/nix-alien";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
-
     home-manager = {
       url = "github:nix-community/home-manager/release-24.11";
       inputs.nixpkgs.follows = "nixpkgs";

system/nix-ld.nix

@@ -1,9 +1,5 @@
-{ inputs, pkgs, ... }:
+{ ... }:
 
 {
-  environment.systemPackages = [
-    inputs.nix-alien.packages.${pkgs.system}.nix-alien
-  ];
-
   programs.nix-ld.enable = true;
 }