refactor(sops): changed config around and centralised systems

users/modules/programs/zsh.nix

@@ -17,8 +17,6 @@
       ''
         # Bind CTRL+Backspace to delete whole word
         bindkey '^H' backward-kill-word
-        # Set Cargo Registry Token
-        export CARGO_REGISTRY_TOKEN="$(cat ${osConfig.sops.secrets.cargo_api_key.path})"
         export SYSTEM_TYPE="${type}"
       '';
     # TODO: Look into whether we need to add the history attribute