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#! /usr/bin/python
# -*- coding: UTF-8 -*- vim: et ts=4 sw=4
# Copyright © 2010-2012 Piotr Ożarowski <piotr@debian.org>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
from __future__ import with_statement
import logging
import os
import re
import sys
from filecmp import dircmp, cmpfiles, cmp as fcmp
from optparse import OptionParser, SUPPRESS_HELP
from os.path import isabs, isdir, islink, exists, join, normpath, realpath,\
split
from shutil import rmtree, copy as fcopy
from stat import ST_MODE, S_IXUSR, S_IXGRP, S_IXOTH
from debpython.debhelper import DebHelper
from debpython.depends import Dependencies
from debpython.version import SUPPORTED, DEFAULT, \
debsorted, getver, vrepr, parse_pycentral_vrange, \
get_requested_versions, parse_vrange, vrange_str
import debpython.namespace as ns
from debpython.pydist import validate as validate_pydist, \
PUBLIC_DIR_RE
from debpython.tools import sitedir, relative_symlink, \
fix_shebang, shebang2pyver, \
so2pyver, clean_egg_name, \
pyinstall, pyremove
from debpython.option import Option
# initialize script
logging.basicConfig(format='%(levelname).1s: %(module)s:%(lineno)d: '
'%(message)s')
log = logging.getLogger(__name__)
os.umask(022)
EGGnPTH_RE = re.compile(r'(.*?)(-py\d\.\d+)?(.*?)(\.egg-info|\.pth)$')
# naming conventions used in the file:
# * version - tuple of integers
# * ver - string representation of version
# * vrange - version range, pair of max and min versions
# * fn - file name (without path)
# * fpath - file path
### FILES ######################################################
def fix_locations(package):
"""Move files to the right location."""
found_versions = {}
for version in SUPPORTED:
ver = vrepr(version)
to_check = [i % ver for i in (\
'usr/local/lib/python%s/site-packages',
'usr/local/lib/python%s/dist-packages',
'var/lib/python-support/python%s',
'usr/lib/pymodules/python%s')]
if version >= (2, 6):
to_check.append("usr/lib/python%s/site-packages" % ver)
dstdir = sitedir(version, package)
for location in to_check:
srcdir = "debian/%s/%s" % (package, location)
if isdir(srcdir):
if ver in found_versions:
log.error('files for version %s '
'found in two locations:\n %s\n %s',
ver, location, found_versions[ver])
exit(2)
log.info('Python %s should install files in %s. '
'Did you forget "--install-layout=deb"?',
ver, sitedir(version))
if not isdir(dstdir):
os.makedirs(dstdir)
# TODO: what about relative symlinks?
log.debug('moving files from %s to %s', srcdir, dstdir)
os.renames(srcdir, dstdir)
found_versions[ver] = location
# do the same with debug locations
dbg_to_check = ['usr/lib/debug/%s' % i for i in to_check]
dbg_to_check.append("usr/lib/debug/usr/lib/pyshared/python%s" % ver)
dstdir = sitedir(version, package, gdb=True)
for location in dbg_to_check:
srcdir = "debian/%s/%s" % (package, location)
if isdir(srcdir):
if not isdir(dstdir):
os.makedirs(dstdir)
log.debug('moving files from %s to %s', srcdir, dstdir)
os.renames(srcdir, dstdir)
### SHARING FILES ##############################################
def share(package, stats, options):
"""Move files to /usr/share/pyshared/ if possible."""
if package.endswith('-dbg'):
# nothing to share in debug packages
return
pubvers = debsorted(i for i in stats['public_vers'] if i[0] == 2)
if len(pubvers) > 1:
for pos, version1 in enumerate(pubvers):
dir1 = sitedir(version1, package)
for version2 in pubvers[pos + 1:]:
dir2 = sitedir(version2, package)
dc = dircmp(dir1, dir2)
share_2x(dir1, dir2, dc)
elif len(pubvers) == 1:
# don't install into pyshared anymore
pass
if options.guess_versions and pubvers:
for version in get_requested_versions(options.vrange):
if version not in pubvers:
log.debug('guessing files for Python %s', vrepr(version))
versions_without_ext = debsorted(set(pubvers) -\
stats['ext'])
if not versions_without_ext:
log.error('extension for python%s is missing. '
'Build extensions for all supported Python '
'versions (`pyversions -vr`) or adjust '
'X-Python-Version field or pass '
'--no-guessing-versions to dh_python2',
vrepr(version))
exit(3)
srcver = versions_without_ext[0]
if srcver in stats['public_vers']:
stats['public_vers'].add(version)
share_2x(sitedir(srcver, package), sitedir(version, package))
# remove duplicates
stats['requires.txt'] = set(realpath(i) for i in stats['requires.txt'])
stats['nsp.txt'] = set(realpath(i) for i in stats['nsp.txt'])
def move_to_pyshared(dir1):
# dir1 starts with debian/packagename/usr/lib/pythonX.Y/*-packages/
debian, package, path = dir1.split('/', 2)
dstdir = join(debian, package, 'usr/share/pyshared/', \
'/'.join(dir1.split('/')[6:]))
fext = lambda fname: fname.rsplit('.', 1)[-1]
for i in os.listdir(dir1):
fpath1 = join(dir1, i)
if isdir(fpath1) and not islink(fpath1):
if any(fn for fn in os.listdir(fpath1) if fext(fn) != 'so'):
# at least one file that is not an extension
move_to_pyshared(join(dir1, i))
else:
if fext(i) == 'so':
continue
fpath2 = join(dstdir, i)
if not exists(fpath2):
if not exists(dstdir):
os.makedirs(dstdir)
if islink(fpath1):
fpath1_target = os.readlink(fpath1)
if isabs(fpath1_target):
os.symlink(fpath1_target, fpath2)
else:
fpath1_target = normpath(join(dir1, fpath1_target))
relative_symlink(fpath1_target, fpath2)
os.remove(fpath1)
else:
os.rename(fpath1, fpath2)
relative_symlink(fpath2, fpath1)
def create_ext_links(dir1):
"""Create extension symlinks in /usr/lib/pyshared/pythonX.Y.
These symlinks are used to let dpkg detect file conflicts with
python-support and python-central packages.
"""
debian, package, path = dir1.split('/', 2)
python, _, module_subpath = path[8:].split('/', 2)
dstdir = join(debian, package, 'usr/lib/pyshared/', python, module_subpath)
for i in os.listdir(dir1):
fpath1 = join(dir1, i)
if isdir(fpath1):
create_ext_links(fpath1)
elif i.rsplit('.', 1)[-1] == 'so':
fpath2 = join(dstdir, i)
if exists(fpath2):
continue
if not exists(dstdir):
os.makedirs(dstdir)
relative_symlink(fpath1, join(dstdir, i))
def create_public_links(dir1, vrange, root=''):
"""Create public module symlinks for given directory."""
debian, package, path = dir1.split('/', 2)
versions = get_requested_versions(vrange)
for fn in os.listdir(dir1):
fpath1 = join(dir1, fn)
if isdir(fpath1):
create_public_links(fpath1, vrange, join(root, fn))
else:
for version in versions:
dstdir = join(sitedir(version, package), root)
if not exists(dstdir):
os.makedirs(dstdir)
relative_symlink(fpath1, join(dstdir, fn))
def share_2x(dir1, dir2, dc=None):
"""Move common files to pyshared and create symlinks in original
locations."""
debian, package, path = dir2.split('/', 2)
# dir1 starts with debian/packagename/usr/lib/pythonX.Y/*-packages/
dstdir = join(debian, package, 'usr/share/pyshared/', \
'/'.join(dir1.split('/')[6:]))
if not exists(dstdir) and not islink(dir1):
os.makedirs(dstdir)
if dc is None: # guess/copy mode
if not exists(dir2):
os.makedirs(dir2)
common_dirs = []
common_files = []
for i in os.listdir(dir1):
subdir1 = join(dir1, i)
if isdir(subdir1) and not islink(subdir1):
common_dirs.append([i, None])
else:
# directories with .so files will be blocked earlier
common_files.append(i)
elif islink(dir1):
# skip this symlink in pyshared
# (dpkg has problems with symlinks anyway)
common_dirs = []
common_files = []
else:
common_dirs = dc.subdirs.iteritems()
common_files = dc.common_files
# dircmp returns common names only, lets check files more carefully...
common_files = cmpfiles(dir1, dir2, common_files, shallow=False)[0]
for fn in common_files:
if 'so' in fn.split('.'): # foo.so, bar.so.0.1.2, etc.
# in unlikely case where extensions are exactly the same
continue
fpath1 = join(dir1, fn)
fpath2 = join(dir2, fn)
fpath3 = join(dstdir, fn)
# do not touch symlinks created by previous loop or other tools
if dc and not islink(fpath1):
# replace with a link to pyshared
if not exists(fpath3):
os.rename(fpath1, fpath3)
relative_symlink(fpath3, fpath1)
elif fcmp(fpath3, fpath1, shallow=False):
os.remove(fpath1)
relative_symlink(fpath3, fpath1)
if dc is None: # guess/copy mode
if islink(fpath1):
# ralative links will work as well, it's always the same level
os.symlink(os.readlink(fpath1), fpath2)
else:
if exists(fpath3):
# cannot share it, pyshared contains another copy
fcopy(fpath1, fpath2)
else:
# replace with a link to pyshared
os.rename(fpath1, fpath3)
relative_symlink(fpath3, fpath1)
relative_symlink(fpath3, fpath2)
elif exists(fpath2) and exists(fpath3) and \
fcmp(fpath2, fpath3, shallow=False):
os.remove(fpath2)
relative_symlink(fpath3, fpath2)
for dn, dc in common_dirs:
share_2x(join(dir1, dn), join(dir2, dn), dc)
### PACKAGE DETAILS ############################################
def scan(package, dname=None, options=None):
"""Gather statistics about Python files in given package."""
r = {'requires.txt': set(),
'nsp.txt': set(),
'shebangs': set(),
'public_vers': set(),
'private_dirs': {},
'compile': False,
'ext': set()}
dbg_package = package.endswith('-dbg')
if not dname:
proot = "debian/%s" % package
if dname is False:
private_to_check = []
else:
private_to_check = [i % package for i in
('usr/lib/%s', 'usr/lib/games/%s',
'usr/share/%s', 'usr/share/games/%s')]
else:
# scan private directory *only*
dname = dname.strip('/')
proot = join('debian', package, dname)
private_to_check = [dname]
for root, dirs, file_names in os.walk(proot):
# ignore Python 3.X locations
if '/usr/lib/python3' in root or\
'/usr/local/lib/python3' in root:
# warn only once
if root[root.find('/lib/python'):].count('/') == 2:
log.warning('Python 3.x location detected, '
'please use dh_python3: %s', root)
continue
bin_dir = private_dir = None
public_dir = PUBLIC_DIR_RE.match(root)
if public_dir:
version = getver(public_dir.group(1))
if root.endswith('-packages'):
r['public_vers'].add(version)
else:
# TODO: find a way to specify Python version private
# extension was build for
version = False
for i in private_to_check:
if root.startswith(join('debian', package, i)):
private_dir = '/' + i
break
else: # i.e. not public_dir and not private_dir
if len(root.split('/', 6)) < 6 and (\
root.endswith('/sbin') or root.endswith('/bin') or\
root.endswith('/usr/games')):
# /(s)bin or /usr/(s)bin or /usr/games
bin_dir = root
# handle some EGG related data (.egg-info dirs)
for name in dirs:
if name.endswith('.egg-info'):
if dbg_package and options.clean_dbg_pkg:
rmtree(join(root, name))
dirs.remove(name)
continue
clean_name = clean_egg_name(name)
if clean_name != name:
log.info('renaming %s to %s', name, clean_name)
os.rename(join(root, name), join(root, clean_name))
dirs[dirs.index(name)] = clean_name
if root.endswith('.egg-info'):
if 'requires.txt' in file_names:
r['requires.txt'].add(join(root, 'requires.txt'))
if 'namespace_packages.txt' in file_names:
r['nsp.txt'].add(join(root, 'namespace_packages.txt'))
continue
# check files
for fn in sorted(file_names):
# sorted() to make sure .so files are handled before .so.foo
fpath = join(root, fn)
if not exists(fpath):
# could be removed while handling .so symlinks
if islink(fpath) and '.so.' in split(fpath)[-1]:
# dangling symlink to (now removed/renamed) .so file
# which wasn't removed yet (see test3's quux.so.0)
log.info('removing symlink: %s', fpath)
os.remove(fpath)
continue
fext = fn.rsplit('.', 1)[-1]
if fext in ('pyc', 'pyo'):
os.remove(fpath)
continue
if public_dir:
if fext == 'so' and islink(fpath):
dstfpath = fpath
links = set()
while islink(dstfpath):
links.add(dstfpath)
dstfpath = join(root, os.readlink(dstfpath))
if exists(dstfpath) and '.so.' in split(dstfpath)[-1]:
# rename .so.$FOO symlinks, remove other ones
for lpath in links:
log.info('removing symlink: %s', lpath)
os.remove(lpath)
log.info('renaming %s to %s', dstfpath, fn)
os.rename(dstfpath, fpath)
if dbg_package and options.clean_dbg_pkg and \
fext not in ('so', 'h'):
os.remove(join(root, fn))
continue
elif private_dir:
if exists(fpath):
mode = os.stat(fpath)[ST_MODE]
if mode & S_IXUSR or mode & S_IXGRP or mode & S_IXOTH:
if (options.no_shebang_rewrite or \
fix_shebang(fpath, options.shebang)) and \
not options.ignore_shebangs:
res = shebang2pyver(fpath)
if res:
r['private_dirs'].setdefault(private_dir, {})\
.setdefault('shebangs', set()).add(res)
if public_dir or private_dir:
if fext == 'so':
so_version = so2pyver(join(root, fn))
if so_version:
if public_dir:
if version != so_version:
log.error('extension linked to libpython%s '
'and shipped in python%s\'s dist-'
'packages: %s', vrepr(so_version),
vrepr(version), fn)
exit(7)
log.warn('public extension linked with '
'libpython%s: %s', vrepr(so_version), fn)
elif not version:
version = so_version
(r if public_dir else
r['private_dirs'].setdefault(private_dir, {}))\
.setdefault('ext', set()).add(version)
continue
elif fext == 'py':
(r if public_dir else
r['private_dirs'].setdefault(private_dir, {}))\
['compile'] = True
continue
# .egg-info files
if fn.endswith('.egg-info'):
clean_name = clean_egg_name(fn)
if clean_name != fn:
log.info('renaming %s to %s', fn, clean_name)
os.rename(join(root, fn), join(root, clean_name))
continue
# search for scripts in bin dirs
if bin_dir:
if (options.no_shebang_rewrite or \
fix_shebang(fpath, options.shebang)) and \
not options.ignore_shebangs:
res = shebang2pyver(fpath)
if res:
r['shebangs'].add(res)
if dbg_package and options.clean_dbg_pkg:
# remove empty directories in -dbg packages
proot = proot + '/usr/lib'
for root, dirs, file_names in os.walk(proot, topdown=False):
if '-packages/' in root and not file_names:
try:
os.rmdir(root)
except Exception:
pass
log.debug("package %s details = %s", package, r)
return r
################################################################
def main():
log.warn('Please add dh-python package to Build-Depends')
usage = '%prog -p PACKAGE [-V [X.Y][-][A.B]] DIR [-X REGEXPR]\n'
parser = OptionParser(usage, version='%prog 2.1',
option_class=Option)
parser.add_option('--no-guessing-versions', action='store_false',
dest='guess_versions', default=True,
help='disable guessing other supported Python versions')
parser.add_option('--no-guessing-deps', action='store_false',
dest='guess_deps', default=True, help='disable guessing dependencies')
parser.add_option('--skip-private', action='store_true', default=False,
help='don\'t check private directories')
parser.add_option('-v', '--verbose', action='store_true', default=False,
help='turn verbose mode on')
# arch=False->arch:all only, arch=True->arch:any only, None->all of them
parser.add_option('-i', '--indep', action='store_false',
dest='arch', default=None,
help='act on architecture independent packages')
parser.add_option('-a', '-s', '--arch', action='store_true',
dest='arch', help='act on architecture dependent packages')
parser.add_option('-q', '--quiet', action='store_false', dest='verbose',
help='be quiet')
parser.add_option('-p', '--package', action='append',
help='act on the package named PACKAGE')
parser.add_option('-N', '--no-package', action='append',
help='do not act on the specified package')
parser.add_option('--compile-all', action='store_true', default=False,
help='compile all files from given private directory in postinst, '
'not just the ones provided by the package')
parser.add_option('-V', type='version_range', dest='vrange',
help='specify list of supported Python versions. ' +\
'See pycompile(1) for examples')
parser.add_option('-X', '--exclude', action='append', dest='regexpr',
help='exclude items that match given REGEXPR. You may use this option '
'multiple times to build up a list of things to exclude.')
parser.add_option('--depends', action='append',
help='translate given requirements into Debian dependencies '
'and add them to ${python:Depends}. '
'Use it for missing items in requires.txt.')
parser.add_option('--recommends', action='append',
help='translate given requirements into Debian '
'dependencies and add them to ${python:Recommends}')
parser.add_option('--suggests', action='append',
help='translate given requirements into Debian '
'dependencies and add them to ${python:Suggests}')
parser.add_option('--namespace', action='append', dest='namespaces',
help='recreate __init__.py files for given namespaces at install time')
parser.add_option('--clean-pycentral', action='store_true', default=False,
help='generate maintainer script that will remove pycentral files')
parser.add_option('--shebang',
help='use given command as shebang in scripts')
parser.add_option('--ignore-shebangs', action='store_true', default=False,
help='do not translate shebangs into Debian dependencies')
parser.add_option('--ignore-namespace', action='store_true', default=False,
help="ignore Egg's namespace_packages.txt file and --namespace option")
parser.add_option('--no-dbg-cleaning', action='store_false',
dest='clean_dbg_pkg', default=True,
help='do not remove files from debug packages')
parser.add_option('--no-shebang-rewrite', action='store_true',
default=False, help='do not rewrite shebangs')
# ignore some debhelper options:
parser.add_option('-O', help=SUPPRESS_HELP)
options, args = parser.parse_args(sys.argv[1:] + \
os.environ.get('DH_OPTIONS', '').split())
# regexpr option type is not used so lets check patterns here
for pattern in options.regexpr or []:
# fail now rather than at runtime
try:
pattern = re.compile(pattern)
except Exception:
log.error('regular expression is not valid: %s', pattern)
exit(1)
if not options.vrange and exists('debian/pyversions'):
log.debug('parsing version range from debian/pyversions')
with open('debian/pyversions') as fp:
for line in fp:
line = line.strip()
if line and not line.startswith('#'):
options.vrange = parse_vrange(line)
break
# disable PyDist if dh_pydeb is used
if options.guess_deps:
try:
rules = open('debian/rules', 'r').read()
except IOError:
log.warning('cannot open debian/rules file')
else:
if re.search('\n\s*dh_pydeb', rules) or \
re.search('\n\s*dh\s+[^#]*--with[^#]+pydeb', rules):
log.warning('dh_pydeb detected, PyDist feature disabled')
options.guess_deps = False
if not args:
private_dir = None
else:
private_dir = args[0]
if not private_dir.startswith('/'):
# handle usr/share/foo dirs (without leading slash)
private_dir = '/' + private_dir
# TODO: support more than one private dir at the same time (see :meth:scan)
if options.skip_private:
private_dir = False
if options.verbose or os.environ.get('DH_VERBOSE') == '1':
log.setLevel(logging.DEBUG)
log.debug('argv: %s', sys.argv)
log.debug('options: %s', options)
log.debug('args: %s', args)
dh = DebHelper(options)
if not options.vrange and dh.python_version:
options.vrange = parse_pycentral_vrange(dh.python_version)
for package, pdetails in dh.packages.iteritems():
if options.arch is False and pdetails['arch'] != 'all' or \
options.arch is True and pdetails['arch'] == 'all':
continue
log.debug('processing package %s...', package)
if not private_dir:
if not pyinstall(package, options.vrange):
exit(4)
if not pyremove(package, options.vrange):
exit(5)
fix_locations(package)
stats = scan(package, private_dir, options)
if not private_dir:
share(package, stats, options)
pyshared_dir = "debian/%s/usr/share/pyshared/" % package
if not stats['public_vers'] and exists(pyshared_dir):
create_public_links(pyshared_dir, options.vrange)
stats['public_vers'] = get_requested_versions(options.vrange)
stats['compile'] = True
dependencies = Dependencies(package)
dependencies.parse(stats, options)
if stats['public_vers']:
dh.addsubstvar(package, 'python:Versions', \
', '.join(sorted(vrepr(stats['public_vers']))))
ps = package.split('-', 1)
if len(ps) > 1 and ps[0] == 'python':
dh.addsubstvar(package, 'python:Provides', \
', '.join("python%s-%s" % (i, ps[1])\
for i in sorted(vrepr(stats['public_vers']))))
pyclean_added = False # invoke pyclean only once in maintainer script
if stats['compile']:
if options.clean_pycentral:
dh.autoscript(package, 'preinst',
'preinst-pycentral-clean', '')
dh.autoscript(package, 'postinst', 'postinst-pycompile', '')
dh.autoscript(package, 'prerm', 'prerm-pyclean', '')
pyclean_added = True
for pdir, details in stats['private_dirs'].iteritems():
if not details.get('compile'):
continue
if not pyclean_added:
dh.autoscript(package, 'prerm', 'prerm-pyclean', '')
pyclean_added = True
args = pdir
ext_for = details.get('ext')
if ext_for is None: # no extension
shebangs = list(v for i, v in details.get('shebangs', []) if v)
if not options.ignore_shebangs and len(shebangs) == 1:
# only one version from shebang
args += " -V %s" % vrepr(shebangs[0])
elif options.vrange and options.vrange != (None, None):
args += " -V %s" % vrange_str(options.vrange)
elif False in ext_for:
# at least one extension's version not detected
if options.vrange and '-' not in vrange_str(options.vrange):
ver = vrange_str(options.vrange)
else: # try shebang or default Python version
ver = (list(v for i, v in details.get('shebangs', [])
if v) or [None])[0] or DEFAULT
ver = vrepr(ver)
dependencies.depend("python%s" % ver)
args += " -V %s" % vrepr(ver)
else:
version = ext_for.pop()
args += " -V %s" % vrepr(version)
dependencies.depend("python%d.%d" % version)
for pattern in options.regexpr or []:
args += " -X '%s'" % pattern.replace("'", r"'\''")
dh.autoscript(package, 'postinst', 'postinst-pycompile', args)
dependencies.export_to(dh)
pydist_file = join('debian', "%s.pydist" % package)
if exists(pydist_file):
if not validate_pydist(pydist_file):
log.warning("%s.pydist file is invalid", package)
else:
dstdir = join('debian', package, 'usr/share/python/dist/')
if not exists(dstdir):
os.makedirs(dstdir)
fcopy(pydist_file, join(dstdir, package))
# namespace feature - recreate __init__.py files at install time
if options.ignore_namespace:
nsp = None
else:
nsp = ns.parse(stats['nsp.txt'], options.namespaces)
# note that pycompile/pyclean is already added to maintainer scripts
# and it should remain there even if __init__.py was the only .py file
if nsp:
try:
nsp = ns.remove_from_package(package, nsp,
stats['public_vers'])
except (IOError, OSError), e:
log.error('cannot remove __init__.py from package: %s', e)
exit(6)
if nsp:
dstdir = join('debian', package, 'usr/share/python/ns/')
if not exists(dstdir):
os.makedirs(dstdir)
with open(join(dstdir, package), 'a') as fp:
fp.writelines("%s\n" % i for i in nsp)
pyshared = join('debian', package, 'usr/share/pyshared/')
if isdir(pyshared) and not os.listdir(pyshared):
# remove empty pyshared directory
os.rmdir(pyshared)
dh.save()
if __name__ == '__main__':
main()
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