simplify workstation foundation

flake.lock

@@ -282,22 +282,6 @@
         "type": "github"
       }
     },
-    "nixpkgs-stable": {
-      "locked": {
-        "lastModified": 1788405554,
-        "narHash": "sha256-r2f1oUwixlgq9zOdYLqJLfS/lWBT60/IITjhTKI59JU=",
-        "owner": "NixOS",
-        "repo": "nixpkgs",
-        "rev": "a5cc6f2c37bf518436dc8d1c288ccd0c43c2f4c4",
-        "type": "github"
-      },
-      "original": {
-        "owner": "NixOS",
-        "ref": "nixos-26.05",
-        "repo": "nixpkgs",
-        "type": "github"
-      }
-    },
     "nixpkgs_2": {
       "locked": {
         "lastModified": 1767892417,
@@ -324,22 +308,11 @@
         "url": "https://channels.nixos.org/nixpkgs-unstable/nixexprs.tar.xz"
       }
     },
-    "nixpkgs_4": {
-      "locked": {
-        "lastModified": 1787900134,
-        "narHash": "sha256-5GWj0FI2uOwKNpXkmpWrSFDe1rCaNBCUQ8d+HDtFQPI=",
-        "rev": "83199d0d373dd3ac2b9a1996b1d0263f76ab7a4c",
-        "type": "tarball",
-        "url": "https://releases.nixos.org/nixos/unstable/nixos-26.11pre1063296.83199d0d373d/nixexprs.tar.zst"
-      },
-      "original": {
-        "type": "tarball",
-        "url": "https://channels.nixos.org/nixos-unstable/nixexprs.tar.zst"
-      }
-    },
     "noctalia": {
       "inputs": {
-        "nixpkgs": "nixpkgs_4"
+        "nixpkgs": [
+          "nixpkgs"
+        ]
       },
       "locked": {
         "lastModified": 1788600693,
@@ -368,7 +341,6 @@
         "nix-wrapper-modules": "nix-wrapper-modules",
         "nixos-hardware": "nixos-hardware",
         "nixpkgs": "nixpkgs_3",
-        "nixpkgs-stable": "nixpkgs-stable",
         "noctalia": "noctalia",
         "sops-nix": "sops-nix",
         "walker": "walker"