diff --git a/flake.lock b/flake.lock
index c6ce9e8..471ca20 100644
--- a/flake.lock
+++ b/flake.lock
@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1756886854,
-        "narHash": "sha256-6tooT142NLcFjt24Gi4B0G1pgWLvfw7y93sYEfSHlLI=",
+        "lastModified": 1758070117,
+        "narHash": "sha256-uLwwHFCZnT1c3N3biVe/0hCkag2GSrf9+M56+Okf+WY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "0e6684e6c5755325f801bda1751a8a4038145d7d",
+        "rev": "e9b7f2ff62b35f711568b1f0866243c7c302028d",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index d1d770b..cfad560 100644
--- a/flake.nix
+++ b/flake.nix
@@ -3,83 +3,97 @@
 
   inputs.nixpkgs.url = "nixpkgs/nixos-25.05";
 
-  outputs = { self, nixpkgs, ... }@inputs:
-  let
-    pkgs = nixpkgs.legacyPackages.x86_64-linux;
-    start =
-      pkgs.writeShellScriptBin "start" ''
-        set -e
-	export NIXPKGS_ALLOW_INSECURE=1
-        export QEMU_NET_OPTS="hostfwd=tcp::8080-:80"
-        ${pkgs.nixos-shell}/bin/nixos-shell --flake .
-       '';
-  in {
-    nixosConfigurations.vm = nixpkgs.lib.nixosSystem {
-      system = "x86_64-linux";
-      specialArgs.inputs = inputs;
-      pkgs = import nixpkgs {
-	overlays = [
-          (self: super: {
-            froide-govplan = super.froide-govplan.overrideAttrs (oldAttrs: rec {
-              src = ./.;
-              postInstall = oldAttrs.postInstall + ''
-                rm -r $out/${pkgs.python3.sitePackages}/froide_govplan/templates
-                ln -sf /var/lib/froide-govplan/templates $out/${pkgs.python3.sitePackages}/froide_govplan/templates
-                cp -r froide_govplan/static $out/${pkgs.python3.sitePackages}/froide_govplan/
-              '';
-            });
-
-  pythonPackagesExtensions = super.pythonPackagesExtensions ++ [
-    (
-       python-final: python-prev: {
-         moto = python-prev.moto.overridePythonAttrs (oldAttrs: { doCheck = false; });
-       }
-    )
-  ];
-
+  outputs =
+    { self, nixpkgs, ... }@inputs:
+    let
+      pkgs = nixpkgs.legacyPackages.x86_64-linux;
+      start = pkgs.writeShellScriptBin "start" ''
+                set -e
+        	export NIXPKGS_ALLOW_INSECURE=1
+                export QEMU_NET_OPTS="hostfwd=tcp::8080-:80"
+                ${pkgs.nixos-shell}/bin/nixos-shell --flake .
+      '';
+    in
+    {
+      nixosConfigurations.vm = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        specialArgs.inputs = inputs;
+        pkgs = import nixpkgs {
+          overlays = [
+            (self: super: {
+              froide-govplan = super.froide-govplan.overrideAttrs (oldAttrs: rec {
+                src = ./.;
+                postInstall = oldAttrs.postInstall + ''
+                  rm -r $out/${pkgs.python3.sitePackages}/froide_govplan/templates
+                  ln -sf /var/lib/froide-govplan/templates $out/${pkgs.python3.sitePackages}/froide_govplan/templates
+                  cp -r froide_govplan/static $out/${pkgs.python3.sitePackages}/froide_govplan/
+                '';
+              });
 
+              pythonPackagesExtensions = super.pythonPackagesExtensions ++ [
+                (python-final: python-prev: {
+                  moto = python-prev.moto.overridePythonAttrs (oldAttrs: {
+                    doCheck = false;
+                  });
+                })
+              ];
 
             })
+          ];
+        };
+        modules = [
+          (
+            {
+              lib,
+              config,
+              pkgs,
+              ...
+            }:
+            {
+
+              virtualisation = {
+                memorySize = 8000;
+                diskSize = 4096;
+                cores = 4;
+              };
+
+              disabledModules = [ "services/web-apps/froide-govplan.nix" ];
+
+              imports = [ ./froide-govplan.nix ];
+
+              services.froide-govplan = {
+                enable = true;
+                package = pkgs.froide-govplan;
+                settings = {
+                  DEBUG = lib.mkForce true;
+                  CSRF_TRUSTED_ORIGINS = [ "http://localhost:8080" ];
+                };
+              };
+
+              nixos-shell.mounts.extraMounts = {
+                "/var/lib/froide-govplan/templates" = {
+                  target = /home/onny/projects/verwaltungstracker/froide_govplan/templates;
+                  cache = "none";
+                };
+              };
+
+              system.stateVersion = "25.05";
+              services.getty.autologinUser = "root";
+            }
+          )
         ];
       };
-      modules = [
-        ({ lib, config, pkgs, ... }: {
 
-          virtualisation = {
-            memorySize = 8000;
-            diskSize = 4096;
-            cores = 4;
-          };
+      devShells.x86_64-linux.default = pkgs.mkShell {
+        packages = [pkgs.python3Packages.mastodon-py ] ++ pkgs.froide-govplan.dependencies;
+        shellHook = ''
+          export GDAL_LIBRARY_PATH="${pkgs.gdal}/lib/libgdal.so"
+          export GEOS_LIBRARY_PATH="${pkgs.geos}/lib/libgeos_c.so"
+        '';
+      };
 
-	  disabledModules = [ "services/web-apps/froide-govplan.nix" ];
+      packages = { inherit start; };
+      defaultPackage.x86_64-linux = start;
 
-	  imports = [ ./froide-govplan.nix ];
-
-	  services.froide-govplan = {
-	    enable = true;
-	    package = pkgs.froide-govplan;
-	    settings = { 
-	      DEBUG = lib.mkForce true;
-	      CSRF_TRUSTED_ORIGINS = [ "http://localhost:8080" ];
-	    };
-	  };
-
-          nixos-shell.mounts.extraMounts = {
-            "/var/lib/froide-govplan/templates" = {
-               target = /home/onny/projects/verwaltungstracker/froide_govplan/templates;
-               cache = "none";
-            };
-          };
-
-          system.stateVersion = "25.05";
-          services.getty.autologinUser = "root";
-        })
-      ];
     };
-
-    packages = { inherit start; };
-    defaultPackage.x86_64-linux = start;
-
-  };
 }
-