[Snyk] Fix for 9 vulnerabilities (#231)

* Adding flake+direnv

* poetry update

---------

Co-authored-by: Devon Stewart <[email protected]>

Author: replit-reliability

.envrc

@@ -0,0 +1,3 @@
+use flake
+dotenv_if_exists
+source_env_if_exists .local.envrc

.gitignore

@@ -137,3 +137,6 @@ Pipfile.lock
 t.py
 repl-tweet.py
 .DS_Store
+
+# direnv
+.direnv/

flake.lock

@@ -0,0 +1,26 @@
+{
+  description = "A flake that provides tools needed to hack on replit-py";
+
+  inputs.nixpkgs.url = "github:nixos/nixpkgs";
+
+  outputs = { self, nixpkgs }: let
+    mkPkgs = system: import nixpkgs {
+      inherit system;
+    };
+    mkDevShell = system:
+    let
+      pkgs = mkPkgs system;
+    in
+    pkgs.mkShell {
+      packages = [
+        pkgs.python312
+        pkgs.poetry
+        pkgs.uv
+      ];
+    };
+  in
+  {
+    devShells.aarch64-darwin.default = mkDevShell "aarch64-darwin";
+    devShells.x86_64-linux.default = mkDevShell "x86_64-linux";
+  };
+}