Also provide packages directly for added convenience

flake.lock

@@ -0,0 +1,24 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1606600693,
+        "narHash": "sha256-Xr03i0LlCD7PoBOIUNNFJss2uITrGoLF3LiOIW6seC0=",
+        "path": "/nix/store/60394i1ywi6jahim7fq0zkfxxn3f1pxr-source",
+        "rev": "29e9c10750e2b35a0e47db55f36c685ef9219f4e",
+        "type": "path"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -1,5 +1,14 @@
 {
-  outputs = { ... }: {
+  description = "Privately maintained packages";
+
+  inputs.nixpkgs = {
+    type = "indirect";
+    id = "nixpkgs";
+  };
+
+  outputs = { nixpkgs, ... }: rec {
     overlay = import ./default.nix;
+
+    legacyPackages."x86_64-linux" = import nixpkgs { system = "x86_64-linux"; overlays = [ overlay ]; };
   };
 }