diff --git a/processing/shell.nix b/processing/shell.nix
new file mode 100644
index 0000000..7aa02b7
--- /dev/null
+++ b/processing/shell.nix
@@ -0,0 +1,15 @@
+{ pkgs ? import <nixpkgs> {} }:
+let
+  pythonWithPkgs = pkgs.python3.withPackages (p: with p; [
+    pillow
+  ]);
+in
+pkgs.mkShell {
+  buildInputs = [
+    pythonWithPkgs
+  ];
+
+  shellHook = ''
+    PYTHONPATH=${pythonWithPkgs}/${pythonWithPkgs.sitePackages}
+  '';
+}