Add nix files

.envrc

@@ -0,0 +1,11 @@
+if ! has nix_direnv_version || ! nix_direnv_version 2.2.1; then
+  source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/2.2.1/direnvrc" "sha256-zelF0vLbEl5uaqrfIzbgNzJWGmLzCmYAkInj/LNxvKs="
+fi
+
+nix_direnv_watch_file devenv.nix
+nix_direnv_watch_file devenv.lock
+nix_direnv_watch_file devenv.yaml
+if ! use flake . --impure
+then
+  echo "devenv could not be built. The devenv environment was not loaded. Make the necessary changes to devenv.nix and hit enter to try again." >&2
+fi

.gitignore

@@ -160,3 +160,4 @@ validation-report.json
 
 # Folders to ignore
 node_modules
+.devenv

flake.nix

@@ -0,0 +1,45 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.05";
+    systems.url = "github:nix-systems/default";
+    devenv.url = "github:cachix/devenv";
+  };
+
+  nixConfig = {
+    extra-trusted-public-keys = "devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw=";
+    extra-substituters = "https://devenv.cachix.org";
+  };
+
+  outputs = {
+    self,
+    nixpkgs,
+    devenv,
+    systems,
+    ...
+  } @ inputs: let
+    forEachSystem = nixpkgs.lib.genAttrs (import systems);
+  in {
+    devShells =
+      forEachSystem
+      (system: let
+        pkgs = nixpkgs.legacyPackages.${system};
+      in {
+        default = devenv.lib.mkShell {
+          inherit inputs pkgs;
+          modules = [
+            {
+              languages.python = {
+                enable = true;
+                poetry = {
+                  enable = true;
+                  install.enable = true;
+                  install.allExtras = true;
+                };
+                version = "3.11";
+              };
+            }
+          ];
+        };
+      });
+  };
+}