|
|
- """Generate and work with PEP 425 Compatibility Tags."""
- from __future__ import absolute_import
-
- import distutils.util
- import logging
- import platform
- import re
- import sys
- import sysconfig
- import warnings
- from collections import OrderedDict
-
- import pip._internal.utils.glibc
- from pip._internal.utils.compat import get_extension_suffixes
-
- logger = logging.getLogger(__name__)
-
- _osx_arch_pat = re.compile(r'(.+)_(\d+)_(\d+)_(.+)')
-
-
- def get_config_var(var):
- try:
- return sysconfig.get_config_var(var)
- except IOError as e: # Issue #1074
- warnings.warn("{}".format(e), RuntimeWarning)
- return None
-
-
- def get_abbr_impl():
- """Return abbreviated implementation name."""
- if hasattr(sys, 'pypy_version_info'):
- pyimpl = 'pp'
- elif sys.platform.startswith('java'):
- pyimpl = 'jy'
- elif sys.platform == 'cli':
- pyimpl = 'ip'
- else:
- pyimpl = 'cp'
- return pyimpl
-
-
- def get_impl_ver():
- """Return implementation version."""
- impl_ver = get_config_var("py_version_nodot")
- if not impl_ver or get_abbr_impl() == 'pp':
- impl_ver = ''.join(map(str, get_impl_version_info()))
- return impl_ver
-
-
- def get_impl_version_info():
- """Return sys.version_info-like tuple for use in decrementing the minor
- version."""
- if get_abbr_impl() == 'pp':
- # as per https://github.com/pypa/pip/issues/2882
- return (sys.version_info[0], sys.pypy_version_info.major,
- sys.pypy_version_info.minor)
- else:
- return sys.version_info[0], sys.version_info[1]
-
-
- def get_impl_tag():
- """
- Returns the Tag for this specific implementation.
- """
- return "{}{}".format(get_abbr_impl(), get_impl_ver())
-
-
- def get_flag(var, fallback, expected=True, warn=True):
- """Use a fallback method for determining SOABI flags if the needed config
- var is unset or unavailable."""
- val = get_config_var(var)
- if val is None:
- if warn:
- logger.debug("Config variable '%s' is unset, Python ABI tag may "
- "be incorrect", var)
- return fallback()
- return val == expected
-
-
- def get_abi_tag():
- """Return the ABI tag based on SOABI (if available) or emulate SOABI
- (CPython 2, PyPy)."""
- soabi = get_config_var('SOABI')
- impl = get_abbr_impl()
- if not soabi and impl in {'cp', 'pp'} and hasattr(sys, 'maxunicode'):
- d = ''
- m = ''
- u = ''
- if get_flag('Py_DEBUG',
- lambda: hasattr(sys, 'gettotalrefcount'),
- warn=(impl == 'cp')):
- d = 'd'
- if get_flag('WITH_PYMALLOC',
- lambda: impl == 'cp',
- warn=(impl == 'cp')):
- m = 'm'
- if get_flag('Py_UNICODE_SIZE',
- lambda: sys.maxunicode == 0x10ffff,
- expected=4,
- warn=(impl == 'cp' and
- sys.version_info < (3, 3))) \
- and sys.version_info < (3, 3):
- u = 'u'
- abi = '%s%s%s%s%s' % (impl, get_impl_ver(), d, m, u)
- elif soabi and soabi.startswith('cpython-'):
- abi = 'cp' + soabi.split('-')[1]
- elif soabi:
- abi = soabi.replace('.', '_').replace('-', '_')
- else:
- abi = None
- return abi
-
-
- def _is_running_32bit():
- return sys.maxsize == 2147483647
-
-
- def get_platform():
- """Return our platform name 'win32', 'linux_x86_64'"""
- if sys.platform == 'darwin':
- # distutils.util.get_platform() returns the release based on the value
- # of MACOSX_DEPLOYMENT_TARGET on which Python was built, which may
- # be significantly older than the user's current machine.
- release, _, machine = platform.mac_ver()
- split_ver = release.split('.')
-
- if machine == "x86_64" and _is_running_32bit():
- machine = "i386"
- elif machine == "ppc64" and _is_running_32bit():
- machine = "ppc"
-
- return 'macosx_{}_{}_{}'.format(split_ver[0], split_ver[1], machine)
-
- # XXX remove distutils dependency
- result = distutils.util.get_platform().replace('.', '_').replace('-', '_')
- if result == "linux_x86_64" and _is_running_32bit():
- # 32 bit Python program (running on a 64 bit Linux): pip should only
- # install and run 32 bit compiled extensions in that case.
- result = "linux_i686"
-
- return result
-
-
- def is_manylinux1_compatible():
- # Only Linux, and only x86-64 / i686
- if get_platform() not in {"linux_x86_64", "linux_i686"}:
- return False
-
- # Check for presence of _manylinux module
- try:
- import _manylinux
- return bool(_manylinux.manylinux1_compatible)
- except (ImportError, AttributeError):
- # Fall through to heuristic check below
- pass
-
- # Check glibc version. CentOS 5 uses glibc 2.5.
- return pip._internal.utils.glibc.have_compatible_glibc(2, 5)
-
-
- def get_darwin_arches(major, minor, machine):
- """Return a list of supported arches (including group arches) for
- the given major, minor and machine architecture of an macOS machine.
- """
- arches = []
-
- def _supports_arch(major, minor, arch):
- # Looking at the application support for macOS versions in the chart
- # provided by https://en.wikipedia.org/wiki/OS_X#Versions it appears
- # our timeline looks roughly like:
- #
- # 10.0 - Introduces ppc support.
- # 10.4 - Introduces ppc64, i386, and x86_64 support, however the ppc64
- # and x86_64 support is CLI only, and cannot be used for GUI
- # applications.
- # 10.5 - Extends ppc64 and x86_64 support to cover GUI applications.
- # 10.6 - Drops support for ppc64
- # 10.7 - Drops support for ppc
- #
- # Given that we do not know if we're installing a CLI or a GUI
- # application, we must be conservative and assume it might be a GUI
- # application and behave as if ppc64 and x86_64 support did not occur
- # until 10.5.
- #
- # Note: The above information is taken from the "Application support"
- # column in the chart not the "Processor support" since I believe
- # that we care about what instruction sets an application can use
- # not which processors the OS supports.
- if arch == 'ppc':
- return (major, minor) <= (10, 5)
- if arch == 'ppc64':
- return (major, minor) == (10, 5)
- if arch == 'i386':
- return (major, minor) >= (10, 4)
- if arch == 'x86_64':
- return (major, minor) >= (10, 5)
- if arch in groups:
- for garch in groups[arch]:
- if _supports_arch(major, minor, garch):
- return True
- return False
-
- groups = OrderedDict([
- ("fat", ("i386", "ppc")),
- ("intel", ("x86_64", "i386")),
- ("fat64", ("x86_64", "ppc64")),
- ("fat32", ("x86_64", "i386", "ppc")),
- ])
-
- if _supports_arch(major, minor, machine):
- arches.append(machine)
-
- for garch in groups:
- if machine in groups[garch] and _supports_arch(major, minor, garch):
- arches.append(garch)
-
- arches.append('universal')
-
- return arches
-
-
- def get_supported(versions=None, noarch=False, platform=None,
- impl=None, abi=None):
- """Return a list of supported tags for each version specified in
- `versions`.
-
- :param versions: a list of string versions, of the form ["33", "32"],
- or None. The first version will be assumed to support our ABI.
- :param platform: specify the exact platform you want valid
- tags for, or None. If None, use the local system platform.
- :param impl: specify the exact implementation you want valid
- tags for, or None. If None, use the local interpreter impl.
- :param abi: specify the exact abi you want valid
- tags for, or None. If None, use the local interpreter abi.
- """
- supported = []
-
- # Versions must be given with respect to the preference
- if versions is None:
- versions = []
- version_info = get_impl_version_info()
- major = version_info[:-1]
- # Support all previous minor Python versions.
- for minor in range(version_info[-1], -1, -1):
- versions.append(''.join(map(str, major + (minor,))))
-
- impl = impl or get_abbr_impl()
-
- abis = []
-
- abi = abi or get_abi_tag()
- if abi:
- abis[0:0] = [abi]
-
- abi3s = set()
- for suffix in get_extension_suffixes():
- if suffix.startswith('.abi'):
- abi3s.add(suffix.split('.', 2)[1])
-
- abis.extend(sorted(list(abi3s)))
-
- abis.append('none')
-
- if not noarch:
- arch = platform or get_platform()
- if arch.startswith('macosx'):
- # support macosx-10.6-intel on macosx-10.9-x86_64
- match = _osx_arch_pat.match(arch)
- if match:
- name, major, minor, actual_arch = match.groups()
- tpl = '{}_{}_%i_%s'.format(name, major)
- arches = []
- for m in reversed(range(int(minor) + 1)):
- for a in get_darwin_arches(int(major), m, actual_arch):
- arches.append(tpl % (m, a))
- else:
- # arch pattern didn't match (?!)
- arches = [arch]
- elif platform is None and is_manylinux1_compatible():
- arches = [arch.replace('linux', 'manylinux1'), arch]
- else:
- arches = [arch]
-
- # Current version, current API (built specifically for our Python):
- for abi in abis:
- for arch in arches:
- supported.append(('%s%s' % (impl, versions[0]), abi, arch))
-
- # abi3 modules compatible with older version of Python
- for version in versions[1:]:
- # abi3 was introduced in Python 3.2
- if version in {'31', '30'}:
- break
- for abi in abi3s: # empty set if not Python 3
- for arch in arches:
- supported.append(("%s%s" % (impl, version), abi, arch))
-
- # Has binaries, does not use the Python API:
- for arch in arches:
- supported.append(('py%s' % (versions[0][0]), 'none', arch))
-
- # No abi / arch, but requires our implementation:
- supported.append(('%s%s' % (impl, versions[0]), 'none', 'any'))
- # Tagged specifically as being cross-version compatible
- # (with just the major version specified)
- supported.append(('%s%s' % (impl, versions[0][0]), 'none', 'any'))
-
- # No abi / arch, generic Python
- for i, version in enumerate(versions):
- supported.append(('py%s' % (version,), 'none', 'any'))
- if i == 0:
- supported.append(('py%s' % (version[0]), 'none', 'any'))
-
- return supported
-
-
- implementation_tag = get_impl_tag()
|