Full swing off of python onto rust

shell.nix

@@ -1,20 +1,8 @@
-with import <nixpkgs> {};
-with pkgs.python3Packages;
-
-stdenv.mkDerivation {
-  name = "python";
+{ pkgs ? import <nixpkgs> {} }:
 
+pkgs.mkShell {
   buildInputs = [
-    pip
-    python310
-    virtualenv
-  ];
-
-  shellHook = ''
-    SOURCE_DATE_EPOCH=$(date +%s)  # so that we can use python wheels
-    virtualenv --no-setuptools venv > /dev/null
-    export PATH=$PWD/venv/bin:$PATH > /dev/null
-    export PIP_DISABLE_PIP_VERSION_CHECK=1
-    pip install -r requirements.txt > /dev/null
-  '';
+    pkgs.rustc
+    pkgs.cargo
+  ] ++ [ pkgs.libiconv pkgs.darwin.apple_sdk.frameworks.CoreServices ];
 }