Current File : //opt/alt/python34/lib/python3.4/site-packages/pip/commands/install.py
import os
import sys
import tempfile
import shutil
from pip.req import InstallRequirement, RequirementSet, parse_requirements
from pip.log import logger
from pip.locations import (src_prefix, virtualenv_no_global, distutils_scheme,
build_prefix)
from pip.basecommand import Command
from pip.index import PackageFinder
from pip.exceptions import InstallationError, CommandError, PreviousBuildDirError
from pip import cmdoptions
from pip.util import BuildDirectory
class InstallCommand(Command):
"""
Install packages from:
- PyPI (and other indexes) using requirement specifiers.
- VCS project urls.
- Local project directories.
- Local or remote source archives.
pip also supports installing from "requirements files", which provide
an easy way to specify a whole environment to be installed.
"""
name = 'install'
usage = """
%prog [options] <requirement specifier> ...
%prog [options] -r <requirements file> ...
%prog [options] [-e] <vcs project url> ...
%prog [options] [-e] <local project path> ...
%prog [options] <archive url/path> ..."""
summary = 'Install packages.'
bundle = False
def __init__(self, *args, **kw):
super(InstallCommand, self).__init__(*args, **kw)
cmd_opts = self.cmd_opts
cmd_opts.add_option(
'-e', '--editable',
dest='editables',
action='append',
default=[],
metavar='path/url',
help='Install a project in editable mode (i.e. setuptools "develop mode") from a local project path or a VCS url.')
cmd_opts.add_option(cmdoptions.requirements.make())
cmd_opts.add_option(cmdoptions.build_dir.make())
cmd_opts.add_option(
'-t', '--target',
dest='target_dir',
metavar='dir',
default=None,
help='Install packages into <dir>.')
cmd_opts.add_option(
'-d', '--download', '--download-dir', '--download-directory',
dest='download_dir',
metavar='dir',
default=None,
help="Download packages into <dir> instead of installing them, regardless of what's already installed.")
cmd_opts.add_option(cmdoptions.download_cache.make())
cmd_opts.add_option(
'--src', '--source', '--source-dir', '--source-directory',
dest='src_dir',
metavar='dir',
default=src_prefix,
help='Directory to check out editable projects into. '
'The default in a virtualenv is "<venv path>/src". '
'The default for global installs is "<current dir>/src".')
cmd_opts.add_option(
'-U', '--upgrade',
dest='upgrade',
action='store_true',
help='Upgrade all packages to the newest available version. '
'This process is recursive regardless of whether a dependency is already satisfied.')
cmd_opts.add_option(
'--force-reinstall',
dest='force_reinstall',
action='store_true',
help='When upgrading, reinstall all packages even if they are '
'already up-to-date.')
cmd_opts.add_option(
'-I', '--ignore-installed',
dest='ignore_installed',
action='store_true',
help='Ignore the installed packages (reinstalling instead).')
cmd_opts.add_option(cmdoptions.no_deps.make())
cmd_opts.add_option(
'--no-install',
dest='no_install',
action='store_true',
help="DEPRECATED. Download and unpack all packages, but don't actually install them.")
cmd_opts.add_option(
'--no-download',
dest='no_download',
action="store_true",
help="DEPRECATED. Don't download any packages, just install the ones already downloaded "
"(completes an install run with --no-install).")
cmd_opts.add_option(cmdoptions.install_options.make())
cmd_opts.add_option(cmdoptions.global_options.make())
cmd_opts.add_option(
'--user',
dest='use_user_site',
action='store_true',
help='Install using the user scheme.')
cmd_opts.add_option(
'--egg',
dest='as_egg',
action='store_true',
help="Install packages as eggs, not 'flat', like pip normally does. This option is not about installing *from* eggs. (WARNING: Because this option overrides pip's normal install logic, requirements files may not behave as expected.)")
cmd_opts.add_option(
'--root',
dest='root_path',
metavar='dir',
default=None,
help="Install everything relative to this alternate root directory.")
cmd_opts.add_option(
'--strip-file-prefix',
dest='strip_file_prefix',
metavar='prefix',
default=None,
help="Strip given prefix from script paths in wheel RECORD."
)
cmd_opts.add_option(
"--compile",
action="store_true",
dest="compile",
default=True,
help="Compile py files to pyc",
)
cmd_opts.add_option(
"--no-compile",
action="store_false",
dest="compile",
help="Do not compile py files to pyc",
)
cmd_opts.add_option(cmdoptions.use_wheel.make())
cmd_opts.add_option(cmdoptions.no_use_wheel.make())
cmd_opts.add_option(
'--pre',
action='store_true',
default=False,
help="Include pre-release and development versions. By default, pip only finds stable versions.")
cmd_opts.add_option(cmdoptions.no_clean.make())
index_opts = cmdoptions.make_option_group(cmdoptions.index_group, self.parser)
self.parser.insert_option_group(0, index_opts)
self.parser.insert_option_group(0, cmd_opts)
def _build_package_finder(self, options, index_urls, session):
"""
Create a package finder appropriate to this install command.
This method is meant to be overridden by subclasses, not
called directly.
"""
return PackageFinder(find_links=options.find_links,
index_urls=index_urls,
use_wheel=options.use_wheel,
allow_external=options.allow_external,
allow_unverified=options.allow_unverified,
allow_all_external=options.allow_all_external,
allow_all_prereleases=options.pre,
process_dependency_links=
options.process_dependency_links,
session=session,
)
def run(self, options, args):
if (
options.no_install or
options.no_download or
options.build_dir or
options.no_clean
):
logger.deprecated('1.7', 'DEPRECATION: --no-install, --no-download, --build, '
'and --no-clean are deprecated. See https://github.com/pypa/pip/issues/906.')
if options.download_dir:
options.no_install = True
options.ignore_installed = True
# If we have --no-install or --no-download and no --build we use the
# legacy static build dir
if (options.build_dir is None
and (options.no_install or options.no_download)):
options.build_dir = build_prefix
if options.build_dir:
options.build_dir = os.path.abspath(options.build_dir)
options.src_dir = os.path.abspath(options.src_dir)
install_options = options.install_options or []
if options.use_user_site:
if virtualenv_no_global():
raise InstallationError("Can not perform a '--user' install. User site-packages are not visible in this virtualenv.")
install_options.append('--user')
temp_target_dir = None
if options.target_dir:
options.ignore_installed = True
temp_target_dir = tempfile.mkdtemp()
options.target_dir = os.path.abspath(options.target_dir)
if os.path.exists(options.target_dir) and not os.path.isdir(options.target_dir):
raise CommandError("Target path exists but is not a directory, will not continue.")
install_options.append('--home=' + temp_target_dir)
global_options = options.global_options or []
index_urls = [options.index_url] + options.extra_index_urls
if options.no_index:
logger.notify('Ignoring indexes: %s' % ','.join(index_urls))
index_urls = []
if options.use_mirrors:
logger.deprecated("1.7",
"--use-mirrors has been deprecated and will be removed"
" in the future. Explicit uses of --index-url and/or "
"--extra-index-url is suggested.")
if options.mirrors:
logger.deprecated("1.7",
"--mirrors has been deprecated and will be removed in "
" the future. Explicit uses of --index-url and/or "
"--extra-index-url is suggested.")
index_urls += options.mirrors
session = self._build_session(options)
finder = self._build_package_finder(options, index_urls, session)
build_delete = (not (options.no_clean or options.build_dir))
with BuildDirectory(options.build_dir, delete=build_delete) as build_dir:
requirement_set = RequirementSet(
build_dir=build_dir,
src_dir=options.src_dir,
download_dir=options.download_dir,
download_cache=options.download_cache,
upgrade=options.upgrade,
as_egg=options.as_egg,
ignore_installed=options.ignore_installed,
ignore_dependencies=options.ignore_dependencies,
force_reinstall=options.force_reinstall,
use_user_site=options.use_user_site,
target_dir=temp_target_dir,
session=session,
pycompile=options.compile,
)
for name in args:
requirement_set.add_requirement(
InstallRequirement.from_line(name, None))
for name in options.editables:
requirement_set.add_requirement(
InstallRequirement.from_editable(name, default_vcs=options.default_vcs))
for filename in options.requirements:
for req in parse_requirements(filename, finder=finder, options=options, session=session):
requirement_set.add_requirement(req)
if not requirement_set.has_requirements:
opts = {'name': self.name}
if options.find_links:
msg = ('You must give at least one requirement to %(name)s '
'(maybe you meant "pip %(name)s %(links)s"?)' %
dict(opts, links=' '.join(options.find_links)))
else:
msg = ('You must give at least one requirement '
'to %(name)s (see "pip help %(name)s")' % opts)
logger.warn(msg)
return
try:
if not options.no_download:
requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
else:
requirement_set.locate_files()
if not options.no_install and not self.bundle:
requirement_set.install(
install_options,
global_options,
root=options.root_path,
strip_file_prefix=options.strip_file_prefix)
installed = ' '.join([req.name for req in
requirement_set.successfully_installed])
if installed:
logger.notify('Successfully installed %s' % installed)
elif not self.bundle:
downloaded = ' '.join([req.name for req in
requirement_set.successfully_downloaded])
if downloaded:
logger.notify('Successfully downloaded %s' % downloaded)
elif self.bundle:
requirement_set.create_bundle(self.bundle_filename)
logger.notify('Created bundle in %s' % self.bundle_filename)
except PreviousBuildDirError:
options.no_clean = True
raise
finally:
# Clean up
if (not options.no_clean) and ((not options.no_install) or options.download_dir):
requirement_set.cleanup_files(bundle=self.bundle)
if options.target_dir:
if not os.path.exists(options.target_dir):
os.makedirs(options.target_dir)
lib_dir = distutils_scheme('', home=temp_target_dir)['purelib']
for item in os.listdir(lib_dir):
shutil.move(
os.path.join(lib_dir, item),
os.path.join(options.target_dir, item)
)
shutil.rmtree(temp_target_dir)
return requirement_set