diff --git a/flake.lock b/flake.lock
index a6ca46e..61299bf 100644
--- a/flake.lock
+++ b/flake.lock
@@ -46,12 +46,25 @@
         "type": "github"
       }
     },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1668629939,
+        "narHash": "sha256-MEh5T0wZ1oaoUn84odShFvIObwSIbZ+NEZ5Q2ff83nc=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "b85c2a060f6223e869493a8397ca47223ee2458a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "poetry2nix": {
       "inputs": {
         "flake-utils": "flake-utils_2",
-        "nixpkgs": [
-          "nixpkgs"
-        ]
+        "nixpkgs": "nixpkgs_2"
       },
       "locked": {
         "lastModified": 1668394823,
@@ -62,9 +75,8 @@
         "type": "github"
       },
       "original": {
-        "owner": "nix-community",
-        "repo": "poetry2nix",
-        "type": "github"
+        "id": "poetry2nix",
+        "type": "indirect"
       }
     },
     "root": {
diff --git a/flake.nix b/flake.nix
index 8b0f527..69abba8 100644
--- a/flake.nix
+++ b/flake.nix
@@ -2,46 +2,23 @@
   description = "A Python API for various tools I use at work.";
   inputs = {
     nixpkgs.url = github:NixOS/nixpkgs/nixos-22.05;
-    flake-utils = {
-      url = github:numtide/flake-utils;
-    };
-    poetry2nix = {
-      url = "github:nix-community/poetry2nix";
-      inputs.nixpkgs.follows = "nixpkgs";
-    };
+    flake-utils.url = github:numtide/flake-utils;
   };
   outputs = { self, nixpkgs, flake-utils, poetry2nix }:
-    {
-      # Nixpkgs overlay providing the application
-      overlay = nixpkgs.lib.composeManyExtensions [
-        poetry2nix.overlay
-        (final: prev: {
-          # The application
-          network_inventory = prev.poetry2nix.mkPoetryApplication {
-            projectDir = ./.;
-          };
-        })
-      ];
-    } // (flake-utils.lib.eachDefaultSystem (system:
+    flake-utils.lib.eachDefaultSystem (system:
       let
-        pkgs = import nixpkgs {
-          inherit system;
-          overlays = [ self.overlay ];
-        };
+        pkgs = nixpkgs.legacyPackages.${system};
       in
       {
-        apps = {
-          network_inventory = pkgs.network_inventory;
-        };
-
-        defaultApp = pkgs.network_inventory;
-
         devShell = pkgs.mkShell {
           buildInputs = [
             pkgs.gnumake
+            pkgs.python39
             pkgs.python39Packages.poetry
-            pkgs.network_inventory
           ];
         };
-      }));
+        shellHook = ''
+          export DJANGO_SETTINGS_MODULE=network_inventory.settings.local
+        '';
+      });
 }