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from distutils.util import convert_path
from distutils import log
from distutils.errors import DistutilsError, DistutilsOptionError
import os
import glob
import io
import pkg_resources
from setuptools.command.easy_install import easy_install
from setuptools import namespaces
import setuptools
class develop(namespaces.DevelopInstaller, easy_install):
"""Set up package for development"""
description = "install package in 'development mode'"
user_options = easy_install.user_options + [
("uninstall", "u", "Uninstall this source package"),
("egg-path=", None, "Set the path to be used in the .egg-link file"),
]
boolean_options = easy_install.boolean_options + ['uninstall']
command_consumes_arguments = False # override base
def run(self):
if self.uninstall:
self.multi_version = True
self.uninstall_link()
self.uninstall_namespaces()
else:
self.install_for_development()
self.warn_deprecated_options()
def initialize_options(self):
self.uninstall = None
self.egg_path = None
easy_install.initialize_options(self)
self.setup_path = None
self.always_copy_from = '.' # always copy eggs installed in curdir
def finalize_options(self):
ei = self.get_finalized_command("egg_info")
if ei.broken_egg_info:
template = "Please rename %r to %r before using 'develop'"
args = ei.egg_info, ei.broken_egg_info
raise DistutilsError(template % args)
self.args = [ei.egg_name]
easy_install.finalize_options(self)
self.expand_basedirs()
self.expand_dirs()
# pick up setup-dir .egg files only: no .egg-info
self.package_index.scan(glob.glob('*.egg'))
egg_link_fn = ei.egg_name + '.egg-link'
self.egg_link = os.path.join(self.install_dir, egg_link_fn)
self.egg_base = ei.egg_base
if self.egg_path is None:
self.egg_path = os.path.abspath(ei.egg_base)
target = pkg_resources.normalize_path(self.egg_base)
egg_path = pkg_resources.normalize_path(
os.path.join(self.install_dir, self.egg_path)
)
if egg_path != target:
raise DistutilsOptionError(
"--egg-path must be a relative path from the install"
" directory to " + target
)
# Make a distribution for the package's source
self.dist = pkg_resources.Distribution(
target,
pkg_resources.PathMetadata(target, os.path.abspath(ei.egg_info)),
project_name=ei.egg_name,
)
self.setup_path = self._resolve_setup_path(
self.egg_base,
self.install_dir,
self.egg_path,
)
@staticmethod
def _resolve_setup_path(egg_base, install_dir, egg_path):
"""
Generate a path from egg_base back to '.' where the
setup script resides and ensure that path points to the
setup path from $install_dir/$egg_path.
"""
path_to_setup = egg_base.replace(os.sep, '/').rstrip('/')
if path_to_setup != os.curdir:
path_to_setup = '../' * (path_to_setup.count('/') + 1)
resolved = pkg_resources.normalize_path(
os.path.join(install_dir, egg_path, path_to_setup)
)
if resolved != pkg_resources.normalize_path(os.curdir):
raise DistutilsOptionError(
"Can't get a consistent path to setup script from"
" installation directory",
resolved,
pkg_resources.normalize_path(os.curdir),
)
return path_to_setup
def install_for_development(self):
self.run_command('egg_info')
# Build extensions in-place
self.reinitialize_command('build_ext', inplace=1)
self.run_command('build_ext')
if setuptools.bootstrap_install_from:
self.easy_install(setuptools.bootstrap_install_from)
setuptools.bootstrap_install_from = None
self.install_namespaces()
# create an .egg-link in the installation dir, pointing to our egg
log.info("Creating %s (link to %s)", self.egg_link, self.egg_base)
if not self.dry_run:
with open(self.egg_link, "w") as f:
f.write(self.egg_path + "\n" + self.setup_path)
# postprocess the installed distro, fixing up .pth, installing scripts,
# and handling requirements
self.process_distribution(None, self.dist, not self.no_deps)
def uninstall_link(self):
if os.path.exists(self.egg_link):
log.info("Removing %s (link to %s)", self.egg_link, self.egg_base)
egg_link_file = open(self.egg_link)
contents = [line.rstrip() for line in egg_link_file]
egg_link_file.close()
if contents not in ([self.egg_path], [self.egg_path, self.setup_path]):
log.warn("Link points to %s: uninstall aborted", contents)
return
if not self.dry_run:
os.unlink(self.egg_link)
if not self.dry_run:
self.update_pth(self.dist) # remove any .pth link to us
if self.distribution.scripts:
# XXX should also check for entry point scripts!
log.warn("Note: you must uninstall or replace scripts manually!")
def install_egg_scripts(self, dist):
if dist is not self.dist:
# Installing a dependency, so fall back to normal behavior
return easy_install.install_egg_scripts(self, dist)
# create wrapper scripts in the script dir, pointing to dist.scripts
# new-style...
self.install_wrapper_scripts(dist)
# ...and old-style
for script_name in self.distribution.scripts or []:
script_path = os.path.abspath(convert_path(script_name))
script_name = os.path.basename(script_path)
with io.open(script_path) as strm:
script_text = strm.read()
self.install_script(dist, script_name, script_text, script_path)
def install_wrapper_scripts(self, dist):
dist = VersionlessRequirement(dist)
return easy_install.install_wrapper_scripts(self, dist)
class VersionlessRequirement:
"""
Adapt a pkg_resources.Distribution to simply return the project
name as the 'requirement' so that scripts will work across
multiple versions.
>>> from pkg_resources import Distribution
>>> dist = Distribution(project_name='foo', version='1.0')
>>> str(dist.as_requirement())
'foo==1.0'
>>> adapted_dist = VersionlessRequirement(dist)
>>> str(adapted_dist.as_requirement())
'foo'
"""
def __init__(self, dist):
self.__dist = dist
def __getattr__(self, name):
return getattr(self.__dist, name)
def as_requirement(self):
return self.project_name
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