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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
'purelib': '$base/Lib/site-packages',
'platlib': '$base/Lib/site-packages',
'headers': '$base/Include/$dist_name',
'scripts': '$base/Scripts',
'data' : '$base',
'unix_prefix': {
'purelib': '$base/lib/python$py_version_short/site-packages',
'platlib': '$platbase/lib/python$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/lib/python',
'headers': '$base/include/python/$dist_name',
'scripts': '$base/bin',
'data' : '$base',
# user site schemes
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',
'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 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']
user_options.append(('user', None,
"install in user site-package '%s'" % USER_SITE))
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 helpers, 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 != "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!
if == 'posix':
# 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')
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,
self.config_vars['userbase'] = self.install_userbase
self.config_vars['usersite'] = self.install_usersite
# 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
from pprint import pprint
print("config vars:")
# Expand "~" and configuration variables in the installation
# directories.
# Create directories in the home dir:
if self.user:
# 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
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.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.
('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:
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)
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")
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
elif self.home is not None:
self.install_base = self.install_platbase = self.home
if self.prefix is None:
if self.exec_prefix is not None:
raise DistutilsOptionError(
"must not supply exec-prefix without prefix")
self.prefix = os.path.normpath(sys.prefix)
self.exec_prefix = os.path.normpath(sys.exec_prefix)
if self.exec_prefix is None:
self.exec_prefix = self.prefix
self.install_base = self.prefix
self.install_platbase = self.exec_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( + "_user")
elif self.home is not None:
self.install_base = self.install_platbase = self.home
if self.prefix is None:
self.prefix = os.path.normpath(sys.prefix)
self.install_base = self.install_platbase = self.prefix
except KeyError:
raise DistutilsPlatformError(
"I don't know how to install stuff on '%s'" %
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 == 'posix' or == '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
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:
"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
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)
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:
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:
# 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 "
# Run all sub-commands (at least those that need to be run)
for cmd_name in self.get_sub_commands():
if self.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.record, outputs),
"writing list of installed files to '%s'" %
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"),
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:
(filename, [self.extra_dirs]),
"creating %s" % filename)
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:
if self.path_file and self.install_path_file:
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)
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
def has_headers(self):
"""Returns true if the current distribution has any headers to
return self.distribution.has_headers()
def has_scripts(self):
"""Returns true if the current distribution has any scripts to.
return self.distribution.has_scripts()
def has_data(self):
"""Returns true if the current distribution has any data to.
return self.distribution.has_data_files()
# 'sub_commands': a list of commands this command might have to run to
# get its work done. See 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),