first setup, travel works, bjornd api works

shell.nix

@@ -0,0 +1,20 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.mkShell {
+  packages = [
+    (pkgs.python3.withPackages (ps: with ps; [
+      httpx
+      beautifulsoup4
+      lxml
+    ]))
+  ];
+
+  shellHook = ''
+    if [ -f .env ]; then
+      set -a
+      source .env
+      set +a
+      echo ".env geladen"
+    fi
+  '';
+}