fix(systems/mottarone): the horrors.

alternatively, rollback nixpkgs to before the latest staging merge.
something (gtk3 or something depending on it) broke jaspersoft studio
and well i need that to work

flake.lock

@@ -227,9 +227,26 @@
         "type": "github"
       },
       "original": {
-        "id": "nixpkgs",
+        "owner": "NixOS",
         "ref": "nixos-unstable",
-        "type": "indirect"
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-mottarone": {
+      "locked": {
+        "lastModified": 1739866667,
+        "narHash": "sha256-EO1ygNKZlsAC9avfcwHkKGMsmipUk1Uc0TbrEZpkn64=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "73cf49b8ad837ade2de76f87eb53fc85ed5d4680",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "73cf49b8ad837ade2de76f87eb53fc85ed5d4680",
+        "type": "github"
       }
     },
     "root": {
@@ -245,6 +262,7 @@
         "mystia": "mystia",
         "nixos-wsl": "nixos-wsl",
         "nixpkgs": "nixpkgs",
+        "nixpkgs-mottarone": "nixpkgs-mottarone",
         "systems": "systems",
         "treefmt-nix": "treefmt-nix",
         "ukubot-rs": "ukubot-rs"

flake.nix

@@ -58,7 +58,8 @@
     };
 
   inputs = {
-    nixpkgs.url = "nixpkgs/nixos-unstable";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    nixpkgs-mottarone.url = "github:NixOS/nixpkgs/73cf49b8ad837ade2de76f87eb53fc85ed5d4680";
 
     camasca = {
       url = "git+https://git.uku3lig.net/uku/camasca";

systems/default.nix

@@ -11,8 +11,9 @@ let
     {
       role,
       system,
+      nixpkgs ? inputs.nixpkgs,
     }:
-    inputs.nixpkgs.lib.nixosSystem {
+    nixpkgs.lib.nixosSystem {
       inherit system;
 
       modules = [
@@ -24,9 +25,10 @@ let
       ];
 
       specialArgs = inputs // {
+        inherit nixpkgs;
         _utils = mkUtils {
           inherit lib;
-          pkgs = inputs.nixpkgs.legacyPackages.${system};
+          pkgs = nixpkgs.legacyPackages.${system};
         };
       };
     };
@@ -51,6 +53,7 @@ in
     mottarone = {
       role = "laptop";
       system = "x86_64-linux";
+      nixpkgs = inputs.nixpkgs-mottarone;
     };
 
     etna = {