if ! has nix_direnv_version || ! nix_direnv_version 3.0.0; then
    source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/3.0.0/direnvrc" "sha256-21TMnI2xWX7HkSTjFFri2UaohXVj854mgvWapWrxRXg="
fi

use flake