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Implemented PEP 405 (Python virtual environments).

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This commit is contained in:
Vinay Sajip 2012-05-26 03:45:29 +01:00
parent f2bdc3690a
commit 7ded1f0f69
41 changed files with 1454 additions and 66 deletions
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40
Lib/distutils/sysconfig.py
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@ -18,6 +18,8 @@ from .errors import DistutilsPlatformError
# These are needed in a couple of spots, so just compute them once.
PREFIX = os.path.normpath(sys.prefix)
EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
BASE_PREFIX = os.path.normpath(sys.base_prefix)
BASE_EXEC_PREFIX = os.path.normpath(sys.base_exec_prefix)
# Path to the base directory of the project. On Windows the binary may
# live in project/PCBuild9. If we're dealing with an x64 Windows build,
@ -39,11 +41,18 @@ if os.name == "nt" and "\\pcbuild\\amd64" in project_base[-14:].lower():
# different (hard-wired) directories.
# Setup.local is available for Makefile builds including VPATH builds,
# Setup.dist is available on Windows
def _python_build():
def _is_python_source_dir(d):
for fn in ("Setup.dist", "Setup.local"):
if os.path.isfile(os.path.join(project_base, "Modules", fn)):
if os.path.isfile(os.path.join(d, "Modules", fn)):
return True
return False
_sys_home = getattr(sys, '_home', None)
if _sys_home and os.name == 'nt' and _sys_home.lower().endswith('pcbuild'):
_sys_home = os.path.dirname(_sys_home)
def _python_build():
if _sys_home:
return _is_python_source_dir(_sys_home)
return _is_python_source_dir(project_base)
python_build = _python_build()
# Calculate the build qualifier flags if they are defined. Adding the flags
@ -74,11 +83,11 @@ def get_python_inc(plat_specific=0, prefix=None):
otherwise, this is the path to platform-specific header files
(namely pyconfig.h).
If 'prefix' is supplied, use it instead of sys.prefix or
sys.exec_prefix -- i.e., ignore 'plat_specific'.
If 'prefix' is supplied, use it instead of sys.base_prefix or
sys.base_exec_prefix -- i.e., ignore 'plat_specific'.
"""
if prefix is None:
prefix = plat_specific and EXEC_PREFIX or PREFIX
prefix = plat_specific and BASE_EXEC_PREFIX or BASE_PREFIX
if os.name == "posix":
if python_build:
# Assume the executable is in the build directory. The
@ -86,11 +95,12 @@ def get_python_inc(plat_specific=0, prefix=None):
# the build directory may not be the source directory, we
# must use "srcdir" from the makefile to find the "Include"
# directory.
base = os.path.dirname(os.path.abspath(sys.executable))
base = _sys_home or os.path.dirname(os.path.abspath(sys.executable))
if plat_specific:
return base
else:
incdir = os.path.join(get_config_var('srcdir'), 'Include')
incdir = os.path.join(_sys_home or get_config_var('srcdir'),
'Include')
return os.path.normpath(incdir)
python_dir = 'python' + get_python_version() + build_flags
return os.path.join(prefix, "include", python_dir)
@ -115,11 +125,14 @@ def get_python_lib(plat_specific=0, standard_lib=0, prefix=None):
containing standard Python library modules; otherwise, return the
directory for site-specific modules.
If 'prefix' is supplied, use it instead of sys.prefix or
sys.exec_prefix -- i.e., ignore 'plat_specific'.
If 'prefix' is supplied, use it instead of sys.base_prefix or
sys.base_exec_prefix -- i.e., ignore 'plat_specific'.
"""
if prefix is None:
prefix = plat_specific and EXEC_PREFIX or PREFIX
if standard_lib:
prefix = plat_specific and BASE_EXEC_PREFIX or BASE_PREFIX
else:
prefix = plat_specific and EXEC_PREFIX or PREFIX
if os.name == "posix":
libpython = os.path.join(prefix,
@ -232,9 +245,9 @@ def get_config_h_filename():
"""Return full pathname of installed pyconfig.h file."""
if python_build:
if os.name == "nt":
inc_dir = os.path.join(project_base, "PC")
inc_dir = os.path.join(_sys_home or project_base, "PC")
else:
inc_dir = project_base
inc_dir = _sys_home or project_base
else:
inc_dir = get_python_inc(plat_specific=1)
if get_python_version() < '2.2':
@ -248,7 +261,8 @@ def get_config_h_filename():
def get_makefile_filename():
"""Return full pathname of installed Makefile from the Python build."""
if python_build:
return os.path.join(os.path.dirname(sys.executable), "Makefile")
return os.path.join(_sys_home or os.path.dirname(sys.executable),
"Makefile")
lib_dir = get_python_lib(plat_specific=0, standard_lib=1)
config_file = 'config-{}{}'.format(get_python_version(), build_flags)
return os.path.join(lib_dir, config_file, 'Makefile')