def install_build_packages(cls, package_names: List[str]) -> List[str]:
"""Install packages on the host required to build.
:param package_names: a list of package names to install.
:type package_names: a list of strings.
:return: a list with the packages installed and their versions.
:rtype: list of strings.
:raises snapcraft.repo.errors.BuildPackageNotFoundError:
if one of the packages was not found.
:raises snapcraft.repo.errors.PackageBrokenError:
if dependencies for one of the packages cannot be resolved.
:raises snapcraft.repo.errors.BuildPackagesNotInstalledError:
if installing the packages on the host failed.
"""
logger.debug(f"Requested build-packages: {sorted(package_names)!r}")
# Make sure all packages are valid and remove already installed.
with AptCache() as apt_cache:
try:
apt_cache.mark_packages(set(package_names))
except errors.PackageNotFoundError as error:
raise errors.BuildPackageNotFoundError(error.package_name)
marked_packages = apt_cache.get_marked_packages()
# TODO: this matches prior behavior, but the version is not
# being passed along to apt-get install, even if prescribed
# by the user. We should specify it upon user request.
install_packages = sorted([name for name, _ in marked_packages])
# Install packages, if any.
if install_packages:
cls._install_packages(install_packages)
return sorted([f"{name}={version}" for name, version in marked_packages])
def _get_marked_packages(cls, package_names: List[str]) -> List[Tuple[str, str]]:
with AptCache() as apt_cache:
try:
apt_cache.mark_packages(set(package_names))
except errors.PackageNotFoundError as error:
raise errors.BuildPackageNotFoundError(error.package_name)
return apt_cache.get_marked_packages()