michael@0: import os
michael@0: import sys
michael@0: import warnings 
michael@0: import imp
michael@0: import opcode # opcode is not a virtualenv module, so we can use it to find the stdlib
michael@0:               # Important! To work on pypy, this must be a module that resides in the
michael@0:               # lib-python/modified-x.y.z directory
michael@0: 
michael@0: dirname = os.path.dirname
michael@0: 
michael@0: distutils_path = os.path.join(os.path.dirname(opcode.__file__), 'distutils')
michael@0: if os.path.normpath(distutils_path) == os.path.dirname(os.path.normpath(__file__)):
michael@0:     warnings.warn(
michael@0:         "The virtualenv distutils package at %s appears to be in the same location as the system distutils?")
michael@0: else:
michael@0:     __path__.insert(0, distutils_path)
michael@0:     real_distutils = imp.load_module("_virtualenv_distutils", None, distutils_path, ('', '', imp.PKG_DIRECTORY))
michael@0:     # Copy the relevant attributes
michael@0:     try:
michael@0:         __revision__ = real_distutils.__revision__
michael@0:     except AttributeError:
michael@0:         pass
michael@0:     __version__ = real_distutils.__version__
michael@0: 
michael@0: from distutils import dist, sysconfig
michael@0: 
michael@0: try:
michael@0:     basestring
michael@0: except NameError:
michael@0:     basestring = str
michael@0: 
michael@0: ## patch build_ext (distutils doesn't know how to get the libs directory
michael@0: ## path on windows - it hardcodes the paths around the patched sys.prefix)
michael@0: 
michael@0: if sys.platform == 'win32':
michael@0:     from distutils.command.build_ext import build_ext as old_build_ext
michael@0:     class build_ext(old_build_ext):
michael@0:         def finalize_options (self):
michael@0:             if self.library_dirs is None:
michael@0:                 self.library_dirs = []
michael@0:             elif isinstance(self.library_dirs, basestring):
michael@0:                 self.library_dirs = self.library_dirs.split(os.pathsep)
michael@0:             
michael@0:             self.library_dirs.insert(0, os.path.join(sys.real_prefix, "Libs"))
michael@0:             old_build_ext.finalize_options(self)
michael@0:             
michael@0:     from distutils.command import build_ext as build_ext_module 
michael@0:     build_ext_module.build_ext = build_ext
michael@0: 
michael@0: ## distutils.dist patches:
michael@0: 
michael@0: old_find_config_files = dist.Distribution.find_config_files
michael@0: def find_config_files(self):
michael@0:     found = old_find_config_files(self)
michael@0:     system_distutils = os.path.join(distutils_path, 'distutils.cfg')
michael@0:     #if os.path.exists(system_distutils):
michael@0:     #    found.insert(0, system_distutils)
michael@0:         # What to call the per-user config file
michael@0:     if os.name == 'posix':
michael@0:         user_filename = ".pydistutils.cfg"
michael@0:     else:
michael@0:         user_filename = "pydistutils.cfg"
michael@0:     user_filename = os.path.join(sys.prefix, user_filename)
michael@0:     if os.path.isfile(user_filename):
michael@0:         for item in list(found):
michael@0:             if item.endswith('pydistutils.cfg'):
michael@0:                 found.remove(item)
michael@0:         found.append(user_filename)
michael@0:     return found
michael@0: dist.Distribution.find_config_files = find_config_files
michael@0: 
michael@0: ## distutils.sysconfig patches:
michael@0: 
michael@0: old_get_python_inc = sysconfig.get_python_inc
michael@0: def sysconfig_get_python_inc(plat_specific=0, prefix=None):
michael@0:     if prefix is None:
michael@0:         prefix = sys.real_prefix
michael@0:     return old_get_python_inc(plat_specific, prefix)
michael@0: sysconfig_get_python_inc.__doc__ = old_get_python_inc.__doc__
michael@0: sysconfig.get_python_inc = sysconfig_get_python_inc
michael@0: 
michael@0: old_get_python_lib = sysconfig.get_python_lib
michael@0: def sysconfig_get_python_lib(plat_specific=0, standard_lib=0, prefix=None):
michael@0:     if standard_lib and prefix is None:
michael@0:         prefix = sys.real_prefix
michael@0:     return old_get_python_lib(plat_specific, standard_lib, prefix)
michael@0: sysconfig_get_python_lib.__doc__ = old_get_python_lib.__doc__
michael@0: sysconfig.get_python_lib = sysconfig_get_python_lib
michael@0: 
michael@0: old_get_config_vars = sysconfig.get_config_vars
michael@0: def sysconfig_get_config_vars(*args):
michael@0:     real_vars = old_get_config_vars(*args)
michael@0:     if sys.platform == 'win32':
michael@0:         lib_dir = os.path.join(sys.real_prefix, "libs")
michael@0:         if isinstance(real_vars, dict) and 'LIBDIR' not in real_vars:
michael@0:             real_vars['LIBDIR'] = lib_dir # asked for all
michael@0:         elif isinstance(real_vars, list) and 'LIBDIR' in args:
michael@0:             real_vars = real_vars + [lib_dir] # asked for list
michael@0:     return real_vars
michael@0: sysconfig_get_config_vars.__doc__ = old_get_config_vars.__doc__
michael@0: sysconfig.get_config_vars = sysconfig_get_config_vars