add nix stuff

.envrc

@@ -0,0 +1 @@
+use flake

.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

@@ -0,0 +1,20 @@
+{
+  description = "A Nix-flake-based Python development environment";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+
+  outputs = { self, nixpkgs }:
+    let
+      forEachSupportedSystem = f: nixpkgs.lib.genAttrs nixpkgs.lib.systems.flakeExposed (system: f {
+        pkgs = import nixpkgs { inherit system; };
+      });
+    in
+    {
+      devShells = forEachSupportedSystem ({ pkgs }: {
+        default = pkgs.mkShell {
+          packages = with pkgs; [ python311 virtualenv libffi libsodium jetbrains.pycharm-community ] ++
+            (with pkgs.python311Packages; [ pip virtualenv ]);
+        };
+      });
+    };
+}