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import os
import requests
import sys
from .utils import getenv, sh
from contextlib import contextmanager
from subprocess import run
ENV_ORIG = os.environ.copy()
def conda_installer(ver, prefix='./miniconda3'):
assert isinstance(ver, str)
assert isinstance(prefix, str)
prefix = os.path.abspath(prefix)
if os.path.exists(prefix):
print(f'{prefix}: exists', file=sys.stderr)
return prefix
name = 'Miniconda3'
version = ver
arch = 'x86_64'
platform = sys.platform
if sys.platform == 'darwin':
platform = 'MacOSX'
elif sys.platform == 'linux':
platform = 'Linux'
url_root = 'https://repo.continuum.io/miniconda'
installer = f'{name}-{version}-{platform}-{arch}.sh'
url = f'{url_root}/{installer}'
install_command = f'./{installer} -b -p {prefix}'.split()
if not os.path.exists(installer):
with requests.get(url, stream=True) as data:
with open(installer, 'wb') as fd:
for chunk in data.iter_content(chunk_size=16384):
fd.write(chunk)
os.chmod(installer, 0o755)
run(install_command)
return prefix
def conda_init_path(prefix):
if os.environ['PATH'] != ENV_ORIG['PATH']:
os.environ['PATH'] = ENV_ORIG['PATH']
os.environ['PATH'] = ':'.join([os.path.join(prefix, 'bin'),
os.environ['PATH']])
print(f"PATH = {os.environ['PATH']}")
def conda_activate(env_name):
proc = run(f"source activate {env_name} && env",
capture_output=True,
shell=True)
proc.check_returncode()
return getenv(proc.stdout.decode()).copy()
@contextmanager
def conda_env_load(env_name):
last = os.environ.copy()
os.environ = conda_activate(env_name)
try:
yield
finally:
os.environ = last.copy()
def conda(*args):
return sh('conda', *args)
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