def _create_env_conda_43(prefix, index, full_list_of_packages):
assert CONDA_VERSION_MAJOR_MINOR >= (4, 3)
from conda.core.package_cache import ProgressiveFetchExtract
from conda.core.link import UnlinkLinkTransaction
from conda.gateways.disk.create import mkdir_p
pfe = ProgressiveFetchExtract(index, full_list_of_packages)
pfe.execute()
mkdir_p(prefix)
txn = UnlinkLinkTransaction.create_from_dists(index, prefix, (), full_list_of_packages)
txn.execute()
def create_env(repo, pkgs, target):
with Locked(target):
spec_fname = os.path.join(repo.working_dir, 'env.spec')
with open(spec_fname, 'r') as fh:
spec = yaml.safe_load(fh)
channels = prioritize_channels(spec.get('channels', []))
# Build reverse look-up from channel URL to channel name.
channel_by_url = {url: channel for url, (channel, _) in channels.items()}
index = fetch_index(channels, use_cache=False)
resolver = Resolve(index)
# Create the package distribution from the manifest. Ensure to replace
# channel-URLs with channel names, otherwise the fetch-extract may fail.
dists = [Dist.from_string(pkg, channel_override=channel_by_url.get(url, url)) for url, pkg in pkgs]
# Use the resolver to sort packages into the appropriate dependency
# order.
sorted_dists = resolver.dependency_sort({dist.name: dist for dist in dists})
pfe = ProgressiveFetchExtract(index, sorted_dists)
pfe.execute()
mkdir_p(target)
txn = UnlinkLinkTransaction.create_from_dists(index, target, (), sorted_dists)
txn.execute()
