def uninstall(pilist: list,
ipmap: dict,
env: Environment = None,
logger: TextLogger = None):
"""
Build the list of packages to uninstall.
Dependencies are preserved (ie dependencies needed by other installed packages are kept)
Packages are sorted for uninstall order.
Returns a list of InstalledPackage
"""
def _log(message):
if logger is not None and logger.isverbose():
logger.print_verbose(message)
out = []
# Build the list from installed packages
DependencyUtils.__build_tree(pilist,
ipmap,
out,
env=env,
ignore_unknown=True)
# for uninstall, reverse order
out = list(reversed(out))
# Remove read only packages
ro_packages = list(filter(lambda ip: ip.read_only, out))
if len(ro_packages) > 0 and logger is not None and logger.isverbose():
logger.print_verbose("System package(s) cannot be uninstalled: " +
", ".join(map(str, ro_packages)))
# Maintain dependencies
other_pi_list = [
ip.identifier for ip in ipmap.values() if ip not in out
]
# Keep all configurations (ie env=None) for all other installed packages
for needed_ip in DependencyUtils.installed(other_pi_list,
ipmap,
env=None,
ignore_unknown=True):
if needed_ip in out:
if logger is not None and logger.isverbose():
# Print packages which needs this package
rdepends = DependencyUtils.rdepends([needed_ip.identifier],
ipmap,
env=env)
_log(
"Cannot uninstall {ip.identifier} (dependency of {text})"
.format(ip=needed_ip,
text=", ".join(map(str, rdepends))))
out.remove(needed_ip)
out = [ip for ip in out if ip not in ro_packages]
return out
def download_and_verify_file(url: str,
output: Path,
logger: TextLogger = None,
hashstr: str = None):
"""
Download an artifact and check its hash if given
"""
if output.exists():
if hashstr is None:
logger.print_verbose(
"File exists but cannot be verified, {file.name} will be re-downloaded"
.format(file=output))
os.remove(str(output))
elif not hash_check(output, hashstr, raise_exception=False):
logger.print_verbose(
"File exists but hash differs, {file.name} will be re-downloaded"
.format(file=output))
os.remove(str(output))
else:
logger.print_verbose(
"File {file.name} is already downloaded".format(file=output))
if not output.exists():
download_file(url, output, logger=logger)
if hashstr:
hash_check(output, hashstr, raise_exception=True)
return output