You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
142 lines
4.7 KiB
142 lines
4.7 KiB
"""Build Environment used for isolation during sdist building
|
|
"""
|
|
|
|
import logging
|
|
import os
|
|
import sys
|
|
from distutils.sysconfig import get_python_lib
|
|
from sysconfig import get_paths
|
|
|
|
from pip._vendor.pkg_resources import Requirement, VersionConflict, WorkingSet
|
|
|
|
from pip._internal.utils.misc import call_subprocess
|
|
from pip._internal.utils.temp_dir import TempDirectory
|
|
from pip._internal.utils.ui import open_spinner
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class BuildEnvironment(object):
|
|
"""Creates and manages an isolated environment to install build deps
|
|
"""
|
|
|
|
def __init__(self):
|
|
self._temp_dir = TempDirectory(kind="build-env")
|
|
self._temp_dir.create()
|
|
|
|
@property
|
|
def path(self):
|
|
return self._temp_dir.path
|
|
|
|
def __enter__(self):
|
|
self.save_path = os.environ.get('PATH', None)
|
|
self.save_pythonpath = os.environ.get('PYTHONPATH', None)
|
|
self.save_nousersite = os.environ.get('PYTHONNOUSERSITE', None)
|
|
|
|
install_scheme = 'nt' if (os.name == 'nt') else 'posix_prefix'
|
|
install_dirs = get_paths(install_scheme, vars={
|
|
'base': self.path,
|
|
'platbase': self.path,
|
|
})
|
|
|
|
scripts = install_dirs['scripts']
|
|
if self.save_path:
|
|
os.environ['PATH'] = scripts + os.pathsep + self.save_path
|
|
else:
|
|
os.environ['PATH'] = scripts + os.pathsep + os.defpath
|
|
|
|
# Note: prefer distutils' sysconfig to get the
|
|
# library paths so PyPy is correctly supported.
|
|
purelib = get_python_lib(plat_specific=0, prefix=self.path)
|
|
platlib = get_python_lib(plat_specific=1, prefix=self.path)
|
|
if purelib == platlib:
|
|
lib_dirs = purelib
|
|
else:
|
|
lib_dirs = purelib + os.pathsep + platlib
|
|
if self.save_pythonpath:
|
|
os.environ['PYTHONPATH'] = lib_dirs + os.pathsep + \
|
|
self.save_pythonpath
|
|
else:
|
|
os.environ['PYTHONPATH'] = lib_dirs
|
|
|
|
os.environ['PYTHONNOUSERSITE'] = '1'
|
|
|
|
return self.path
|
|
|
|
def __exit__(self, exc_type, exc_val, exc_tb):
|
|
def restore_var(varname, old_value):
|
|
if old_value is None:
|
|
os.environ.pop(varname, None)
|
|
else:
|
|
os.environ[varname] = old_value
|
|
|
|
restore_var('PATH', self.save_path)
|
|
restore_var('PYTHONPATH', self.save_pythonpath)
|
|
restore_var('PYTHONNOUSERSITE', self.save_nousersite)
|
|
|
|
def cleanup(self):
|
|
self._temp_dir.cleanup()
|
|
|
|
def missing_requirements(self, reqs):
|
|
"""Return a list of the requirements from reqs that are not present
|
|
"""
|
|
missing = []
|
|
with self:
|
|
ws = WorkingSet(os.environ["PYTHONPATH"].split(os.pathsep))
|
|
for req in reqs:
|
|
try:
|
|
if ws.find(Requirement.parse(req)) is None:
|
|
missing.append(req)
|
|
except VersionConflict:
|
|
missing.append(req)
|
|
return missing
|
|
|
|
def install_requirements(self, finder, requirements, message):
|
|
args = [
|
|
sys.executable, '-m', 'pip', 'install', '--ignore-installed',
|
|
'--no-user', '--prefix', self.path, '--no-warn-script-location',
|
|
]
|
|
if logger.getEffectiveLevel() <= logging.DEBUG:
|
|
args.append('-v')
|
|
for format_control in ('no_binary', 'only_binary'):
|
|
formats = getattr(finder.format_control, format_control)
|
|
args.extend(('--' + format_control.replace('_', '-'),
|
|
','.join(sorted(formats or {':none:'}))))
|
|
if finder.index_urls:
|
|
args.extend(['-i', finder.index_urls[0]])
|
|
for extra_index in finder.index_urls[1:]:
|
|
args.extend(['--extra-index-url', extra_index])
|
|
else:
|
|
args.append('--no-index')
|
|
for link in finder.find_links:
|
|
args.extend(['--find-links', link])
|
|
for _, host, _ in finder.secure_origins:
|
|
args.extend(['--trusted-host', host])
|
|
if finder.allow_all_prereleases:
|
|
args.append('--pre')
|
|
if finder.process_dependency_links:
|
|
args.append('--process-dependency-links')
|
|
args.append('--')
|
|
args.extend(requirements)
|
|
with open_spinner(message) as spinner:
|
|
call_subprocess(args, show_stdout=False, spinner=spinner)
|
|
|
|
|
|
class NoOpBuildEnvironment(BuildEnvironment):
|
|
"""A no-op drop-in replacement for BuildEnvironment
|
|
"""
|
|
|
|
def __init__(self):
|
|
pass
|
|
|
|
def __enter__(self):
|
|
pass
|
|
|
|
def __exit__(self, exc_type, exc_val, exc_tb):
|
|
pass
|
|
|
|
def cleanup(self):
|
|
pass
|
|
|
|
def install_requirements(self, finder, requirements, message):
|
|
raise NotImplementedError()
|
|
|