Reported by a user on Telegram.
Improve the developer experience of pop install.

• First, review and ensure that the dependencies being installed match those listed in the updated Polkadot Docs:
  https://docs.polkadot.com/develop/parachains/install-polkadot-sdk/#before-you-begin-linux

• Second, improve the UX by detecting which dependencies are already installed on the system, so users aren’t prompted to install them again unnecessarily.