lock the flake

flake.lock

@@ -0,0 +1,42 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1648297722,
+        "narHash": "sha256-W+qlPsiZd8F3XkzXOzAoR+mpFqzm3ekQkJNa+PIh1BQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "0f8662f1319ad6abf89b3380dd2722369fc51ade",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1648828273,
+        "narHash": "sha256-k/91wilcKTq+tEXYfybNr9idHo+CnMaydVOk1YFQflk=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "355b09d75974cef72b4a8473a4152be8a350293e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

pkgs/disks.nix

@@ -1,5 +1,5 @@
 # Raw ISO
-{ emptyDirectory, p7zip, stdenvNoCC, ... }:
+{ stdenvNoCC, ... }:
 let
   build_iso = args: stdenvNoCC.mkDerivation ({
     buildPhase = ''