add nix stuff

.gitignore

@@ -122,6 +122,7 @@ celerybeat.pid
 # Environments
 .env
 .venv
+.direnv
 env/
 venv/
 ENV/
@@ -157,4 +158,4 @@ cython_debug/
 #  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
 #  and can be added to the global gitignore or merged into this file.  For a more nuclear
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
-#.idea/
+.idea/

flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1705913940,
+        "narHash": "sha256-pjSl/1cwYczhSSudR6z0JA/8MclZx/ztzTahvOzwPPw=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "9ed792777ae7967fee22dae2e88fdb6cb965b193",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -12,8 +12,8 @@
     {
       devShells = forEachSupportedSystem ({ pkgs }: {
         default = pkgs.mkShell {
-          packages = with pkgs; [ python313 virtualenv libffi libsodium jetbrains.pycharm-community ] ++
-            (with pkgs.python313Packages; [ pip virtualenv ]);
+          packages = with pkgs; [ python311 virtualenv libffi libsodium jetbrains.pycharm-community ] ++
+            (with pkgs.python311Packages; [ pip virtualenv ]);
         };
       });
     };