install package from prefix_dir, not env_dir (which yields empty pkg)
install package from prefix_dir, not env_dir (which yields empty pkg)

pre-commit/pre-commit,pre-commit/pre-commit,pre-commit/pre-commit,pre-commit/pre-commit,pre-commit/pre-commit,pre-commit/pre-commit,pre-commit/pre-commit,pre-commit/pre-commit,pre-commit/pre-commit,pre-commit/pre-commit,pre-commit/pre-commit