fix src = self (bad)

flake.lock

@@ -35,7 +35,23 @@
     "root": {
       "inputs": {
         "nixpkgs": "nixpkgs",
-        "nixpkgs-unstable": "nixpkgs-unstable"
+        "nixpkgs-unstable": "nixpkgs-unstable",
+        "systems": "systems"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
       }
     }
   },

flake.nix

@@ -31,7 +31,7 @@
     overlays.default = self: super: {
       dobutterfliescry-net = super.stdenv.mkDerivation {
         name = "dobutterfliescry.net";
-        src = self;
+        src = ./.;
         nativeBuildInputs = [super.makeWrapper];
         installPhase = ''
           mkdir -p $out