Add nix develop shell

Author: tmaegel

flake.lock

@@ -0,0 +1,38 @@
+{
+  description = "python development environment";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+  };
+
+  outputs =
+    { self, nixpkgs, ... }@inputs:
+    let
+      system = "x86_64-linux";
+      pkgs = nixpkgs.legacyPackages.${system};
+    in
+    {
+      devShells.x86_64-linux.default = pkgs.mkShell {
+        venvDir = "./venv";
+        nativeBuildInputs = with pkgs; [
+          python312
+          python312Packages.venvShellHook
+        ];
+
+        shellHook = '''';
+
+        # Run this command, only after creating the virtual environment
+        postVenvCreation = ''
+          unset SOURCE_DATE_EPOCH
+          pip install -r requirements.txt
+        '';
+
+        # Now we can execute any commands within the virtual environment.
+        # This is optional and can be left out to run pip manually.
+        postShellHook = ''
+          # allow pip to install wheels
+          unset SOURCE_DATE_EPOCH
+        '';
+      };
+    };
+}