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Edit File : install.py \| Size : 26.63 KB
"""distutils.command.install Implements the Distutils 'install' command.""" import sys import os from distutils import log from distutils.core import Command from distutils.debug import DEBUG from distutils.sysconfig import get_config_vars from distutils.errors import DistutilsPlatformError from distutils.file_util import write_file from distutils.util import convert_path, subst_vars, change_root from distutils.util import get_platform from distutils.errors import DistutilsOptionError from site import USER_BASE from site import USER_SITE HAS_USER_SITE = True WINDOWS_SCHEME = { 'purelib': '$base/Lib/site-packages', 'platlib': '$base/Lib/site-packages', 'headers': '$base/Include/$dist_name', 'scripts': '$base/Scripts', 'data' : '$base', } INSTALL_SCHEMES = { 'unix_prefix': { 'purelib': '$base/lib/python$py_version_short/site-packages', 'platlib': '$platbase/lib64/python$py_version_short/site-packages', 'headers': '$base/include/python$py_version_short$abiflags/$dist_name', 'scripts': '$base/bin', 'data' : '$base', }, 'unix_home': { 'purelib': '$base/lib/python', 'platlib': '$base/lib64/python', 'headers': '$base/include/python/$dist_name', 'scripts': '$base/bin', 'data' : '$base', }, 'nt': WINDOWS_SCHEME, } # user site schemes if HAS_USER_SITE: INSTALL_SCHEMES['nt_user'] = { 'purelib': '$usersite', 'platlib': '$usersite', 'headers': '$userbase/Python$py_version_nodot/Include/$dist_name', 'scripts': '$userbase/Python$py_version_nodot/Scripts', 'data' : '$userbase', } INSTALL_SCHEMES['unix_user'] = { 'purelib': '$usersite', 'platlib': '$usersite', 'headers': '$userbase/include/python$py_version_short$abiflags/$dist_name', 'scripts': '$userbase/bin', 'data' : '$userbase', } # The keys to an installation scheme; if any new types of files are to be # installed, be sure to add an entry to every installation scheme above, # and to SCHEME_KEYS here. SCHEME_KEYS = ('purelib', 'platlib', 'headers', 'scripts', 'data') class install(Command): description = "install everything from build directory" user_options = [ # Select installation scheme and set base director(y\|ies) ('prefix=', None, "installation prefix"), ('exec-prefix=', None, "(Unix only) prefix for platform-specific files"), ('home=', None, "(Unix only) home directory to install under"), # Or, just set the base director(y\|ies) ('install-base=', None, "base installation directory (instead of --prefix or --home)"), ('install-platbase=', None, "base installation directory for platform-specific files " + "(instead of --exec-prefix or --home)"), ('root=', None, "install everything relative to this alternate root directory"), # Or, explicitly set the installation scheme ('install-purelib=', None, "installation directory for pure Python module distributions"), ('install-platlib=', None, "installation directory for non-pure module distributions"), ('install-lib=', None, "installation directory for all module distributions " + "(overrides --install-purelib and --install-platlib)"), ('install-headers=', None, "installation directory for C/C++ headers"), ('install-scripts=', None, "installation directory for Python scripts"), ('install-data=', None, "installation directory for data files"), # Byte-compilation options -- see install_lib.py for details, as # these are duplicated from there (but only install_lib does # anything with them). ('compile', 'c', "compile .py to .pyc [default]"), ('no-compile', None, "don't compile .py files"), ('optimize=', 'O', "also compile with optimization: -O1 for \"python -O\", " "-O2 for \"python -OO\", and -O0 to disable [default: -O0]"), # Miscellaneous control options ('force', 'f', "force installation (overwrite any existing files)"), ('skip-build', None, "skip rebuilding everything (for testing/debugging)"), # Where to install documentation (eventually!) #('doc-format=', None, "format of documentation to generate"), #('install-man=', None, "directory for Unix man pages"), #('install-html=', None, "directory for HTML documentation"), #('install-info=', None, "directory for GNU info files"), ('record=', None, "filename in which to record list of installed files"), ] boolean_options = ['compile', 'force', 'skip-build'] if HAS_USER_SITE: user_options.append(('user', None, "install in user site-package '%s'" % USER_SITE)) boolean_options.append('user') negative_opt = {'no-compile' : 'compile'} def initialize_options(self): """Initializes options.""" # High-level options: these select both an installation base # and scheme. self.prefix = None self.exec_prefix = None self.home = None self.user = 0 # These select only the installation base; it's up to the user to # specify the installation scheme (currently, that means supplying # the --install-{platlib,purelib,scripts,data} options). self.install_base = None self.install_platbase = None self.root = None # These options are the actual installation directories; if not # supplied by the user, they are filled in using the installation # scheme implied by prefix/exec-prefix/home and the contents of # that installation scheme. self.install_purelib = None # for pure module distributions self.install_platlib = None # non-pure (dists w/ extensions) self.install_headers = None # for C/C++ headers self.install_lib = None # set to either purelib or platlib self.install_scripts = None self.install_data = None self.install_userbase = USER_BASE self.install_usersite = USER_SITE self.compile = None self.optimize = None # Deprecated # These two are for putting non-packagized distributions into their # own directory and creating a .pth file if it makes sense. # 'extra_path' comes from the setup file; 'install_path_file' can # be turned off if it makes no sense to install a .pth file. (But # better to install it uselessly than to guess wrong and not # install it when it's necessary and would be used!) Currently, # 'install_path_file' is always true unless some outsider meddles # with it. self.extra_path = None self.install_path_file = 1 # 'force' forces installation, even if target files are not # out-of-date. 'skip_build' skips running the "build" command, # handy if you know it's not necessary. 'warn_dir' (which is not # a user option, it's just there so the bdist_* commands can turn # it off) determines whether we warn about installing to a # directory not in sys.path. self.force = 0 self.skip_build = 0 self.warn_dir = 1 # These are only here as a conduit from the 'build' command to the # 'install_' commands that do the real work. ('build_base' isn't # actually used anywhere, but it might be useful in future.) They # are not user options, because if the user told the install # command where the build directory is, that wouldn't affect the # build command. self.build_base = None self.build_lib = None # Not defined yet because we don't know anything about # documentation yet. #self.install_man = None #self.install_html = None #self.install_info = None self.record = None # -- Option finalizing methods ------------------------------------- # (This is rather more involved than for most commands, # because this is where the policy for installing third- # party Python modules on various platforms given a wide # array of user input is decided. Yes, it's quite complex!) def finalize_options(self): """Finalizes options.""" # This method (and its pliant slaves, like 'finalize_unix()', # 'finalize_other()', and 'select_scheme()') is where the default # installation directories for modules, extension modules, and # anything else we care to install from a Python module # distribution. Thus, this code makes a pretty important policy # statement about how third-party stuff is added to a Python # installation! Note that the actual work of installation is done # by the relatively simple 'install_' commands; they just take # their orders from the installation directory options determined # here. # Check for errors/inconsistencies in the options; first, stuff # that's wrong on any platform. if ((self.prefix or self.exec_prefix or self.home) and (self.install_base or self.install_platbase)): raise DistutilsOptionError( "must supply either prefix/exec-prefix/home or " + "install-base/install-platbase -- not both") if self.home and (self.prefix or self.exec_prefix): raise DistutilsOptionError( "must supply either home or prefix/exec-prefix -- not both") if self.user and (self.prefix or self.exec_prefix or self.home or self.install_base or self.install_platbase): raise DistutilsOptionError("can't combine user with prefix, " "exec_prefix/home, or install_(plat)base") # Next, stuff that's wrong (or dubious) only on certain platforms. if os.name != "posix": if self.exec_prefix: self.warn("exec-prefix option ignored on this platform") self.exec_prefix = None # Now the interesting logic -- so interesting that we farm it out # to other methods. The goal of these methods is to set the final # values for the install_{lib,scripts,data,...} options, using as # input a heady brew of prefix, exec_prefix, home, install_base, # install_platbase, user-supplied versions of # install_{purelib,platlib,lib,scripts,data,...}, and the # INSTALL_SCHEME dictionary above. Phew! self.dump_dirs("pre-finalize_{unix,other}") if os.name == 'posix': self.finalize_unix() else: self.finalize_other() self.dump_dirs("post-finalize_{unix,other}()") # Expand configuration variables, tilde, etc. in self.install_base # and self.install_platbase -- that way, we can use $base or # $platbase in the other installation directories and not worry # about needing recursive variable expansion (shudder). py_version = sys.version.split()[0] (prefix, exec_prefix) = get_config_vars('prefix', 'exec_prefix') try: abiflags = sys.abiflags except AttributeError: # sys.abiflags may not be defined on all platforms. abiflags = '' self.config_vars = {'dist_name': self.distribution.get_name(), 'dist_version': self.distribution.get_version(), 'dist_fullname': self.distribution.get_fullname(), 'py_version': py_version, 'py_version_short': '%d.%d' % sys.version_info[:2], 'py_version_nodot': '%d%d' % sys.version_info[:2], 'sys_prefix': prefix, 'prefix': prefix, 'sys_exec_prefix': exec_prefix, 'exec_prefix': exec_prefix, 'abiflags': abiflags, } if HAS_USER_SITE: self.config_vars['userbase'] = self.install_userbase self.config_vars['usersite'] = self.install_usersite self.expand_basedirs() self.dump_dirs("post-expand_basedirs()") # Now define config vars for the base directories so we can expand # everything else. self.config_vars['base'] = self.install_base self.config_vars['platbase'] = self.install_platbase if DEBUG: from pprint import pprint print("config vars:") pprint(self.config_vars) # Expand "~" and configuration variables in the installation # directories. self.expand_dirs() self.dump_dirs("post-expand_dirs()") # Create directories in the home dir: if self.user: self.create_home_path() # Pick the actual directory to install all modules to: either # install_purelib or install_platlib, depending on whether this # module distribution is pure or not. Of course, if the user # already specified install_lib, use their selection. if self.install_lib is None: if self.distribution.ext_modules: # has extensions: non-pure self.install_lib = self.install_platlib else: self.install_lib = self.install_purelib # Convert directories from Unix /-separated syntax to the local # convention. self.convert_paths('lib', 'purelib', 'platlib', 'scripts', 'data', 'headers', 'userbase', 'usersite') # Deprecated # Well, we're not actually fully completely finalized yet: we still # have to deal with 'extra_path', which is the hack for allowing # non-packagized module distributions (hello, Numerical Python!) to # get their own directories. self.handle_extra_path() self.install_libbase = self.install_lib # needed for .pth file self.install_lib = os.path.join(self.install_lib, self.extra_dirs) # If a new root directory was supplied, make all the installation # dirs relative to it. if self.root is not None: self.change_roots('libbase', 'lib', 'purelib', 'platlib', 'scripts', 'data', 'headers') self.dump_dirs("after prepending root") # Find out the build directories, ie. where to install from. self.set_undefined_options('build', ('build_base', 'build_base'), ('build_lib', 'build_lib')) # Punt on doc directories for now -- after all, we're punting on # documentation completely! def dump_dirs(self, msg): """Dumps the list of user options.""" if not DEBUG: return from distutils.fancy_getopt import longopt_xlate log.debug(msg + ":") for opt in self.user_options: opt_name = opt[0] if opt_name[-1] == "=": opt_name = opt_name[0:-1] if opt_name in self.negative_opt: opt_name = self.negative_opt[opt_name] opt_name = opt_name.translate(longopt_xlate) val = not getattr(self, opt_name) else: opt_name = opt_name.translate(longopt_xlate) val = getattr(self, opt_name) log.debug(" %s: %s", opt_name, val) def finalize_unix(self): """Finalizes options for posix platforms.""" if self.install_base is not None or self.install_platbase is not None: if ((self.install_lib is None and self.install_purelib is None and self.install_platlib is None) or self.install_headers is None or self.install_scripts is None or self.install_data is None): raise DistutilsOptionError( "install-base or install-platbase supplied, but " "installation scheme is incomplete") return if self.user: if self.install_userbase is None: raise DistutilsPlatformError( "User base directory is not specified") self.install_base = self.install_platbase = self.install_userbase self.select_scheme("unix_user") elif self.home is not None: self.install_base = self.install_platbase = self.home self.select_scheme("unix_home") else: if self.prefix is None: if self.exec_prefix is not None: raise DistutilsOptionError( "must not supply exec-prefix without prefix") # self.prefix is set to sys.prefix + /local/ # if neither RPM build nor virtual environment is # detected to make pip and distutils install packages # into the separate location. if (not (hasattr(sys, 'real_prefix') or sys.prefix != sys.base_prefix) and 'RPM_BUILD_ROOT' not in os.environ): addition = "/local" else: addition = "" self.prefix = os.path.normpath(sys.prefix) + addition self.exec_prefix = os.path.normpath(sys.exec_prefix) + addition else: if self.exec_prefix is None: self.exec_prefix = self.prefix self.install_base = self.prefix self.install_platbase = self.exec_prefix self.select_scheme("unix_prefix") def finalize_other(self): """Finalizes options for non-posix platforms""" if self.user: if self.install_userbase is None: raise DistutilsPlatformError( "User base directory is not specified") self.install_base = self.install_platbase = self.install_userbase self.select_scheme(os.name + "_user") elif self.home is not None: self.install_base = self.install_platbase = self.home self.select_scheme("unix_home") else: if self.prefix is None: self.prefix = os.path.normpath(sys.prefix) self.install_base = self.install_platbase = self.prefix try: self.select_scheme(os.name) except KeyError: raise DistutilsPlatformError( "I don't know how to install stuff on '%s'" % os.name) def select_scheme(self, name): """Sets the install directories by applying the install schemes.""" # it's the caller's problem if they supply a bad name! scheme = INSTALL_SCHEMES[name] for key in SCHEME_KEYS: attrname = 'install_' + key if getattr(self, attrname) is None: setattr(self, attrname, scheme[key]) def _expand_attrs(self, attrs): for attr in attrs: val = getattr(self, attr) if val is not None: if os.name == 'posix' or os.name == 'nt': val = os.path.expanduser(val) val = subst_vars(val, self.config_vars) setattr(self, attr, val) def expand_basedirs(self): """Calls `os.path.expanduser` on install_base, install_platbase and root.""" self._expand_attrs(['install_base', 'install_platbase', 'root']) def expand_dirs(self): """Calls `os.path.expanduser` on install dirs.""" self._expand_attrs(['install_purelib', 'install_platlib', 'install_lib', 'install_headers', 'install_scripts', 'install_data',]) def convert_paths(self, names): """Call `convert_path` over `names`.""" for name in names: attr = "install_" + name setattr(self, attr, convert_path(getattr(self, attr))) def handle_extra_path(self): """Set `path_file` and `extra_dirs` using `extra_path`.""" if self.extra_path is None: self.extra_path = self.distribution.extra_path if self.extra_path is not None: log.warn( "Distribution option extra_path is deprecated. " "See issue27919 for details." ) if isinstance(self.extra_path, str): self.extra_path = self.extra_path.split(',') if len(self.extra_path) == 1: path_file = extra_dirs = self.extra_path[0] elif len(self.extra_path) == 2: path_file, extra_dirs = self.extra_path else: raise DistutilsOptionError( "'extra_path' option must be a list, tuple, or " "comma-separated string with 1 or 2 elements") # convert to local form in case Unix notation used (as it # should be in setup scripts) extra_dirs = convert_path(extra_dirs) else: path_file = None extra_dirs = '' # XXX should we warn if path_file and not extra_dirs? (in which # case the path file would be harmless but pointless) self.path_file = path_file self.extra_dirs = extra_dirs def change_roots(self, names): """Change the install directories pointed by name using root.""" for name in names: attr = "install_" + name setattr(self, attr, change_root(self.root, getattr(self, attr))) def create_home_path(self): """Create directories under ~.""" if not self.user: return home = convert_path(os.path.expanduser("~")) for name, path in self.config_vars.items(): if path.startswith(home) and not os.path.isdir(path): self.debug_print("os.makedirs('%s', 0o700)" % path) os.makedirs(path, 0o700) # -- Command execution methods ------------------------------------- def run(self): """Runs the command.""" # Obviously have to build before we can install if not self.skip_build: self.run_command('build') # If we built for any other platform, we can't install. build_plat = self.distribution.get_command_obj('build').plat_name # check warn_dir - it is a clue that the 'install' is happening # internally, and not to sys.path, so we don't check the platform # matches what we are running. if self.warn_dir and build_plat != get_platform(): raise DistutilsPlatformError("Can't install when " "cross-compiling") # Run all sub-commands (at least those that need to be run) for cmd_name in self.get_sub_commands(): self.run_command(cmd_name) if self.path_file: self.create_path_file() # write list of installed files, if requested. if self.record: outputs = self.get_outputs() if self.root: # strip any package prefix root_len = len(self.root) for counter in range(len(outputs)): outputs[counter] = outputs[counter][root_len:] self.execute(write_file, (self.record, outputs), "writing list of installed files to '%s'" % self.record) sys_path = map(os.path.normpath, sys.path) sys_path = map(os.path.normcase, sys_path) install_lib = os.path.normcase(os.path.normpath(self.install_lib)) if (self.warn_dir and not (self.path_file and self.install_path_file) and install_lib not in sys_path): log.debug(("modules installed to '%s', which is not in " "Python's module search path (sys.path) -- " "you'll have to change the search path yourself"), self.install_lib) def create_path_file(self): """Creates the .pth file""" filename = os.path.join(self.install_libbase, self.path_file + ".pth") if self.install_path_file: self.execute(write_file, (filename, [self.extra_dirs]), "creating %s" % filename) else: self.warn("path file '%s' not created" % filename) # -- Reporting methods --------------------------------------------- def get_outputs(self): """Assembles the outputs of all the sub-commands.""" outputs = [] for cmd_name in self.get_sub_commands(): cmd = self.get_finalized_command(cmd_name) # Add the contents of cmd.get_outputs(), ensuring # that outputs doesn't contain duplicate entries for filename in cmd.get_outputs(): if filename not in outputs: outputs.append(filename) if self.path_file and self.install_path_file: outputs.append(os.path.join(self.install_libbase, self.path_file + ".pth")) return outputs def get_inputs(self): """Returns the inputs of all the sub-commands""" # XXX gee, this looks familiar ;-( inputs = [] for cmd_name in self.get_sub_commands(): cmd = self.get_finalized_command(cmd_name) inputs.extend(cmd.get_inputs()) return inputs # -- Predicates for sub-command list ------------------------------- def has_lib(self): """Returns true if the current distribution has any Python modules to install.""" return (self.distribution.has_pure_modules() or self.distribution.has_ext_modules()) def has_headers(self): """Returns true if the current distribution has any headers to install.""" return self.distribution.has_headers() def has_scripts(self): """Returns true if the current distribution has any scripts to. install.""" return self.distribution.has_scripts() def has_data(self): """Returns true if the current distribution has any data to. install.""" return self.distribution.has_data_files() # 'sub_commands': a list of commands this command might have to run to # get its work done. See cmd.py for more info. sub_commands = [('install_lib', has_lib), ('install_headers', has_headers), ('install_scripts', has_scripts), ('install_data', has_data), ('install_egg_info', lambda self:True), ] Back

Edit File : install.py | Size : 26.63 KB

"""distutils.command.install

Implements the Distutils 'install' command."""

import sys
import os

from distutils import log
from distutils.core import Command
from distutils.debug import DEBUG
from distutils.sysconfig import get_config_vars
from distutils.errors import DistutilsPlatformError
from distutils.file_util import write_file
from distutils.util import convert_path, subst_vars, change_root
from distutils.util import get_platform
from distutils.errors import DistutilsOptionError

from site import USER_BASE
from site import USER_SITE
HAS_USER_SITE = True

WINDOWS_SCHEME = {
    'purelib': '$base/Lib/site-packages',
    'platlib': '$base/Lib/site-packages',
    'headers': '$base/Include/$dist_name',
    'scripts': '$base/Scripts',
    'data'   : '$base',
}

INSTALL_SCHEMES = {
    'unix_prefix': {
        'purelib': '$base/lib/python$py_version_short/site-packages',
        'platlib': '$platbase/lib64/python$py_version_short/site-packages',
        'headers': '$base/include/python$py_version_short$abiflags/$dist_name',
        'scripts': '$base/bin',
        'data'   : '$base',
        },
    'unix_home': {
        'purelib': '$base/lib/python',
        'platlib': '$base/lib64/python',
        'headers': '$base/include/python/$dist_name',
        'scripts': '$base/bin',
        'data'   : '$base',
        },
    'nt': WINDOWS_SCHEME,
    }

# user site schemes
if HAS_USER_SITE:
    INSTALL_SCHEMES['nt_user'] = {
        'purelib': '$usersite',
        'platlib': '$usersite',
        'headers': '$userbase/Python$py_version_nodot/Include/$dist_name',
        'scripts': '$userbase/Python$py_version_nodot/Scripts',
        'data'   : '$userbase',
        }

INSTALL_SCHEMES['unix_user'] = {
        'purelib': '$usersite',
        'platlib': '$usersite',
        'headers':
            '$userbase/include/python$py_version_short$abiflags/$dist_name',
        'scripts': '$userbase/bin',
        'data'   : '$userbase',
        }

# The keys to an installation scheme; if any new types of files are to be
# installed, be sure to add an entry to every installation scheme above,
# and to SCHEME_KEYS here.
SCHEME_KEYS = ('purelib', 'platlib', 'headers', 'scripts', 'data')

class install(Command):

description = "install everything from build directory"

user_options = [
        # Select installation scheme and set base director(y|ies)
        ('prefix=', None,
         "installation prefix"),
        ('exec-prefix=', None,
         "(Unix only) prefix for platform-specific files"),
        ('home=', None,
         "(Unix only) home directory to install under"),

# Or, just set the base director(y|ies)
        ('install-base=', None,
         "base installation directory (instead of --prefix or --home)"),
        ('install-platbase=', None,
         "base installation directory for platform-specific files " +
         "(instead of --exec-prefix or --home)"),
        ('root=', None,
         "install everything relative to this alternate root directory"),

# Or, explicitly set the installation scheme
        ('install-purelib=', None,
         "installation directory for pure Python module distributions"),
        ('install-platlib=', None,
         "installation directory for non-pure module distributions"),
        ('install-lib=', None,
         "installation directory for all module distributions " +
         "(overrides --install-purelib and --install-platlib)"),

('install-headers=', None,
         "installation directory for C/C++ headers"),
        ('install-scripts=', None,
         "installation directory for Python scripts"),
        ('install-data=', None,
         "installation directory for data files"),

# Byte-compilation options -- see install_lib.py for details, as
        # these are duplicated from there (but only install_lib does
        # anything with them).
        ('compile', 'c', "compile .py to .pyc [default]"),
        ('no-compile', None, "don't compile .py files"),
        ('optimize=', 'O',
         "also compile with optimization: -O1 for \"python -O\", "
         "-O2 for \"python -OO\", and -O0 to disable [default: -O0]"),

# Miscellaneous control options
        ('force', 'f',
         "force installation (overwrite any existing files)"),
        ('skip-build', None,
         "skip rebuilding everything (for testing/debugging)"),

# Where to install documentation (eventually!)
        #('doc-format=', None, "format of documentation to generate"),
        #('install-man=', None, "directory for Unix man pages"),
        #('install-html=', None, "directory for HTML documentation"),
        #('install-info=', None, "directory for GNU info files"),

('record=', None,
         "filename in which to record list of installed files"),
        ]

boolean_options = ['compile', 'force', 'skip-build']

if HAS_USER_SITE:
        user_options.append(('user', None,
                             "install in user site-package '%s'" % USER_SITE))
        boolean_options.append('user')

negative_opt = {'no-compile' : 'compile'}

def initialize_options(self):
        """Initializes options."""
        # High-level options: these select both an installation base
        # and scheme.
        self.prefix = None
        self.exec_prefix = None
        self.home = None
        self.user = 0

# These select only the installation base; it's up to the user to
        # specify the installation scheme (currently, that means supplying
        # the --install-{platlib,purelib,scripts,data} options).
        self.install_base = None
        self.install_platbase = None
        self.root = None

# These options are the actual installation directories; if not
        # supplied by the user, they are filled in using the installation
        # scheme implied by prefix/exec-prefix/home and the contents of
        # that installation scheme.
        self.install_purelib = None     # for pure module distributions
        self.install_platlib = None     # non-pure (dists w/ extensions)
        self.install_headers = None     # for C/C++ headers
        self.install_lib = None         # set to either purelib or platlib
        self.install_scripts = None
        self.install_data = None
        self.install_userbase = USER_BASE
        self.install_usersite = USER_SITE

self.compile = None
        self.optimize = None

# Deprecated
        # These two are for putting non-packagized distributions into their
        # own directory and creating a .pth file if it makes sense.
        # 'extra_path' comes from the setup file; 'install_path_file' can
        # be turned off if it makes no sense to install a .pth file.  (But
        # better to install it uselessly than to guess wrong and not
        # install it when it's necessary and would be used!)  Currently,
        # 'install_path_file' is always true unless some outsider meddles
        # with it.
        self.extra_path = None
        self.install_path_file = 1

# 'force' forces installation, even if target files are not
        # out-of-date.  'skip_build' skips running the "build" command,
        # handy if you know it's not necessary.  'warn_dir' (which is *not*
        # a user option, it's just there so the bdist_* commands can turn
        # it off) determines whether we warn about installing to a
        # directory not in sys.path.
        self.force = 0
        self.skip_build = 0
        self.warn_dir = 1

# These are only here as a conduit from the 'build' command to the
        # 'install_*' commands that do the real work.  ('build_base' isn't
        # actually used anywhere, but it might be useful in future.)  They
        # are not user options, because if the user told the install
        # command where the build directory is, that wouldn't affect the
        # build command.
        self.build_base = None
        self.build_lib = None

# Not defined yet because we don't know anything about
        # documentation yet.
        #self.install_man = None
        #self.install_html = None
        #self.install_info = None

self.record = None

# -- Option finalizing methods -------------------------------------
    # (This is rather more involved than for most commands,
    # because this is where the policy for installing third-
    # party Python modules on various platforms given a wide
    # array of user input is decided.  Yes, it's quite complex!)

def finalize_options(self):
        """Finalizes options."""
        # This method (and its pliant slaves, like 'finalize_unix()',
        # 'finalize_other()', and 'select_scheme()') is where the default
        # installation directories for modules, extension modules, and
        # anything else we care to install from a Python module
        # distribution.  Thus, this code makes a pretty important policy
        # statement about how third-party stuff is added to a Python
        # installation!  Note that the actual work of installation is done
        # by the relatively simple 'install_*' commands; they just take
        # their orders from the installation directory options determined
        # here.

# Check for errors/inconsistencies in the options; first, stuff
        # that's wrong on any platform.

if ((self.prefix or self.exec_prefix or self.home) and
            (self.install_base or self.install_platbase)):
            raise DistutilsOptionError(
                   "must supply either prefix/exec-prefix/home or " +
                   "install-base/install-platbase -- not both")

if self.home and (self.prefix or self.exec_prefix):
            raise DistutilsOptionError(
                  "must supply either home or prefix/exec-prefix -- not both")

if self.user and (self.prefix or self.exec_prefix or self.home or
                self.install_base or self.install_platbase):
            raise DistutilsOptionError("can't combine user with prefix, "
                                       "exec_prefix/home, or install_(plat)base")

# Next, stuff that's wrong (or dubious) only on certain platforms.
        if os.name != "posix":
            if self.exec_prefix:
                self.warn("exec-prefix option ignored on this platform")
                self.exec_prefix = None

# Now the interesting logic -- so interesting that we farm it out
        # to other methods.  The goal of these methods is to set the final
        # values for the install_{lib,scripts,data,...}  options, using as
        # input a heady brew of prefix, exec_prefix, home, install_base,
        # install_platbase, user-supplied versions of
        # install_{purelib,platlib,lib,scripts,data,...}, and the
        # INSTALL_SCHEME dictionary above.  Phew!

self.dump_dirs("pre-finalize_{unix,other}")

if os.name == 'posix':
            self.finalize_unix()
        else:
            self.finalize_other()

self.dump_dirs("post-finalize_{unix,other}()")

# Expand configuration variables, tilde, etc. in self.install_base
        # and self.install_platbase -- that way, we can use $base or
        # $platbase in the other installation directories and not worry
        # about needing recursive variable expansion (shudder).

py_version = sys.version.split()[0]
        (prefix, exec_prefix) = get_config_vars('prefix', 'exec_prefix')
        try:
            abiflags = sys.abiflags
        except AttributeError:
            # sys.abiflags may not be defined on all platforms.
            abiflags = ''
        self.config_vars = {'dist_name': self.distribution.get_name(),
                            'dist_version': self.distribution.get_version(),
                            'dist_fullname': self.distribution.get_fullname(),
                            'py_version': py_version,
                            'py_version_short': '%d.%d' % sys.version_info[:2],
                            'py_version_nodot': '%d%d' % sys.version_info[:2],
                            'sys_prefix': prefix,
                            'prefix': prefix,
                            'sys_exec_prefix': exec_prefix,
                            'exec_prefix': exec_prefix,
                            'abiflags': abiflags,
                           }

if HAS_USER_SITE:
            self.config_vars['userbase'] = self.install_userbase
            self.config_vars['usersite'] = self.install_usersite

self.expand_basedirs()

self.dump_dirs("post-expand_basedirs()")

# Now define config vars for the base directories so we can expand
        # everything else.
        self.config_vars['base'] = self.install_base
        self.config_vars['platbase'] = self.install_platbase

if DEBUG:
            from pprint import pprint
            print("config vars:")
            pprint(self.config_vars)

# Expand "~" and configuration variables in the installation
        # directories.
        self.expand_dirs()

self.dump_dirs("post-expand_dirs()")

# Create directories in the home dir:
        if self.user:
            self.create_home_path()

# Pick the actual directory to install all modules to: either
        # install_purelib or install_platlib, depending on whether this
        # module distribution is pure or not.  Of course, if the user
        # already specified install_lib, use their selection.
        if self.install_lib is None:
            if self.distribution.ext_modules: # has extensions: non-pure
                self.install_lib = self.install_platlib
            else:
                self.install_lib = self.install_purelib

# Convert directories from Unix /-separated syntax to the local
        # convention.
        self.convert_paths('lib', 'purelib', 'platlib',
                           'scripts', 'data', 'headers',
                           'userbase', 'usersite')

# Deprecated
        # Well, we're not actually fully completely finalized yet: we still
        # have to deal with 'extra_path', which is the hack for allowing
        # non-packagized module distributions (hello, Numerical Python!) to
        # get their own directories.
        self.handle_extra_path()
        self.install_libbase = self.install_lib # needed for .pth file
        self.install_lib = os.path.join(self.install_lib, self.extra_dirs)

# If a new root directory was supplied, make all the installation
        # dirs relative to it.
        if self.root is not None:
            self.change_roots('libbase', 'lib', 'purelib', 'platlib',
                              'scripts', 'data', 'headers')

self.dump_dirs("after prepending root")

# Find out the build directories, ie. where to install from.
        self.set_undefined_options('build',
                                   ('build_base', 'build_base'),
                                   ('build_lib', 'build_lib'))

# Punt on doc directories for now -- after all, we're punting on
        # documentation completely!

def dump_dirs(self, msg):
        """Dumps the list of user options."""
        if not DEBUG:
            return
        from distutils.fancy_getopt import longopt_xlate
        log.debug(msg + ":")
        for opt in self.user_options:
            opt_name = opt[0]
            if opt_name[-1] == "=":
                opt_name = opt_name[0:-1]
            if opt_name in self.negative_opt:
                opt_name = self.negative_opt[opt_name]
                opt_name = opt_name.translate(longopt_xlate)
                val = not getattr(self, opt_name)
            else:
                opt_name = opt_name.translate(longopt_xlate)
                val = getattr(self, opt_name)
            log.debug("  %s: %s", opt_name, val)

def finalize_unix(self):
        """Finalizes options for posix platforms."""
        if self.install_base is not None or self.install_platbase is not None:
            if ((self.install_lib is None and
                 self.install_purelib is None and
                 self.install_platlib is None) or
                self.install_headers is None or
                self.install_scripts is None or
                self.install_data is None):
                raise DistutilsOptionError(
                      "install-base or install-platbase supplied, but "
                      "installation scheme is incomplete")
            return

if self.user:
            if self.install_userbase is None:
                raise DistutilsPlatformError(
                    "User base directory is not specified")
            self.install_base = self.install_platbase = self.install_userbase
            self.select_scheme("unix_user")
        elif self.home is not None:
            self.install_base = self.install_platbase = self.home
            self.select_scheme("unix_home")
        else:
            if self.prefix is None:
                if self.exec_prefix is not None:
                    raise DistutilsOptionError(
                          "must not supply exec-prefix without prefix")

# self.prefix is set to sys.prefix + /local/
                # if neither RPM build nor virtual environment is
                # detected to make pip and distutils install packages
                # into the separate location.
                if (not (hasattr(sys, 'real_prefix') or
                    sys.prefix != sys.base_prefix) and
                    'RPM_BUILD_ROOT' not in os.environ):
                    addition = "/local"
                else:
                    addition = ""

self.prefix = os.path.normpath(sys.prefix) + addition
                self.exec_prefix = os.path.normpath(sys.exec_prefix) + addition

else:
                if self.exec_prefix is None:
                    self.exec_prefix = self.prefix

self.install_base = self.prefix
            self.install_platbase = self.exec_prefix
            self.select_scheme("unix_prefix")

def finalize_other(self):
        """Finalizes options for non-posix platforms"""
        if self.user:
            if self.install_userbase is None:
                raise DistutilsPlatformError(
                    "User base directory is not specified")
            self.install_base = self.install_platbase = self.install_userbase
            self.select_scheme(os.name + "_user")
        elif self.home is not None:
            self.install_base = self.install_platbase = self.home
            self.select_scheme("unix_home")
        else:
            if self.prefix is None:
                self.prefix = os.path.normpath(sys.prefix)

self.install_base = self.install_platbase = self.prefix
            try:
                self.select_scheme(os.name)
            except KeyError:
                raise DistutilsPlatformError(
                      "I don't know how to install stuff on '%s'" % os.name)

def select_scheme(self, name):
        """Sets the install directories by applying the install schemes."""
        # it's the caller's problem if they supply a bad name!
        scheme = INSTALL_SCHEMES[name]
        for key in SCHEME_KEYS:
            attrname = 'install_' + key
            if getattr(self, attrname) is None:
                setattr(self, attrname, scheme[key])

def _expand_attrs(self, attrs):
        for attr in attrs:
            val = getattr(self, attr)
            if val is not None:
                if os.name == 'posix' or os.name == 'nt':
                    val = os.path.expanduser(val)
                val = subst_vars(val, self.config_vars)
                setattr(self, attr, val)

def expand_basedirs(self):
        """Calls `os.path.expanduser` on install_base, install_platbase and
        root."""
        self._expand_attrs(['install_base', 'install_platbase', 'root'])

def expand_dirs(self):
        """Calls `os.path.expanduser` on install dirs."""
        self._expand_attrs(['install_purelib', 'install_platlib',
                            'install_lib', 'install_headers',
                            'install_scripts', 'install_data',])

def convert_paths(self, *names):
        """Call `convert_path` over `names`."""
        for name in names:
            attr = "install_" + name
            setattr(self, attr, convert_path(getattr(self, attr)))

def handle_extra_path(self):
        """Set `path_file` and `extra_dirs` using `extra_path`."""
        if self.extra_path is None:
            self.extra_path = self.distribution.extra_path

if self.extra_path is not None:
            log.warn(
                "Distribution option extra_path is deprecated. "
                "See issue27919 for details."
            )
            if isinstance(self.extra_path, str):
                self.extra_path = self.extra_path.split(',')

if len(self.extra_path) == 1:
                path_file = extra_dirs = self.extra_path[0]
            elif len(self.extra_path) == 2:
                path_file, extra_dirs = self.extra_path
            else:
                raise DistutilsOptionError(
                      "'extra_path' option must be a list, tuple, or "
                      "comma-separated string with 1 or 2 elements")

# convert to local form in case Unix notation used (as it
            # should be in setup scripts)
            extra_dirs = convert_path(extra_dirs)
        else:
            path_file = None
            extra_dirs = ''

# XXX should we warn if path_file and not extra_dirs? (in which
        # case the path file would be harmless but pointless)
        self.path_file = path_file
        self.extra_dirs = extra_dirs

def change_roots(self, *names):
        """Change the install directories pointed by name using root."""
        for name in names:
            attr = "install_" + name
            setattr(self, attr, change_root(self.root, getattr(self, attr)))

def create_home_path(self):
        """Create directories under ~."""
        if not self.user:
            return
        home = convert_path(os.path.expanduser("~"))
        for name, path in self.config_vars.items():
            if path.startswith(home) and not os.path.isdir(path):
                self.debug_print("os.makedirs('%s', 0o700)" % path)
                os.makedirs(path, 0o700)

# -- Command execution methods -------------------------------------

def run(self):
        """Runs the command."""
        # Obviously have to build before we can install
        if not self.skip_build:
            self.run_command('build')
            # If we built for any other platform, we can't install.
            build_plat = self.distribution.get_command_obj('build').plat_name
            # check warn_dir - it is a clue that the 'install' is happening
            # internally, and not to sys.path, so we don't check the platform
            # matches what we are running.
            if self.warn_dir and build_plat != get_platform():
                raise DistutilsPlatformError("Can't install when "
                                             "cross-compiling")

# Run all sub-commands (at least those that need to be run)
        for cmd_name in self.get_sub_commands():
            self.run_command(cmd_name)

if self.path_file:
            self.create_path_file()

# write list of installed files, if requested.
        if self.record:
            outputs = self.get_outputs()
            if self.root:               # strip any package prefix
                root_len = len(self.root)
                for counter in range(len(outputs)):
                    outputs[counter] = outputs[counter][root_len:]
            self.execute(write_file,
                         (self.record, outputs),
                         "writing list of installed files to '%s'" %
                         self.record)

sys_path = map(os.path.normpath, sys.path)
        sys_path = map(os.path.normcase, sys_path)
        install_lib = os.path.normcase(os.path.normpath(self.install_lib))
        if (self.warn_dir and
            not (self.path_file and self.install_path_file) and
            install_lib not in sys_path):
            log.debug(("modules installed to '%s', which is not in "
                       "Python's module search path (sys.path) -- "
                       "you'll have to change the search path yourself"),
                       self.install_lib)

def create_path_file(self):
        """Creates the .pth file"""
        filename = os.path.join(self.install_libbase,
                                self.path_file + ".pth")
        if self.install_path_file:
            self.execute(write_file,
                         (filename, [self.extra_dirs]),
                         "creating %s" % filename)
        else:
            self.warn("path file '%s' not created" % filename)

# -- Reporting methods ---------------------------------------------

def get_outputs(self):
        """Assembles the outputs of all the sub-commands."""
        outputs = []
        for cmd_name in self.get_sub_commands():
            cmd = self.get_finalized_command(cmd_name)
            # Add the contents of cmd.get_outputs(), ensuring
            # that outputs doesn't contain duplicate entries
            for filename in cmd.get_outputs():
                if filename not in outputs:
                    outputs.append(filename)

if self.path_file and self.install_path_file:
            outputs.append(os.path.join(self.install_libbase,
                                        self.path_file + ".pth"))

return outputs

def get_inputs(self):
        """Returns the inputs of all the sub-commands"""
        # XXX gee, this looks familiar ;-(
        inputs = []
        for cmd_name in self.get_sub_commands():
            cmd = self.get_finalized_command(cmd_name)
            inputs.extend(cmd.get_inputs())

return inputs

# -- Predicates for sub-command list -------------------------------

def has_lib(self):
        """Returns true if the current distribution has any Python
        modules to install."""
        return (self.distribution.has_pure_modules() or
                self.distribution.has_ext_modules())

def has_headers(self):
        """Returns true if the current distribution has any headers to
        install."""
        return self.distribution.has_headers()

def has_scripts(self):
        """Returns true if the current distribution has any scripts to.
        install."""
        return self.distribution.has_scripts()

def has_data(self):
        """Returns true if the current distribution has any data to.
        install."""
        return self.distribution.has_data_files()

# 'sub_commands': a list of commands this command might have to run to
    # get its work done.  See cmd.py for more info.
    sub_commands = [('install_lib',     has_lib),
                    ('install_headers', has_headers),
                    ('install_scripts', has_scripts),
                    ('install_data',    has_data),
                    ('install_egg_info', lambda self:True),
                   ]

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