561 lines
20 KiB
Python
561 lines
20 KiB
Python
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"""
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Support for installing and building the "wheel" binary package format.
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"""
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from __future__ import with_statement
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import compileall
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import csv
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import functools
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import hashlib
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import os
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import re
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import shutil
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import sys
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from base64 import urlsafe_b64encode
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from email.parser import Parser
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from pip.backwardcompat import ConfigParser, StringIO
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from pip.exceptions import InvalidWheelFilename, UnsupportedWheel
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from pip.locations import distutils_scheme
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from pip.log import logger
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from pip import pep425tags
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from pip.util import call_subprocess, normalize_path, make_path_relative
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from pip._vendor import pkg_resources
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from pip._vendor.distlib.scripts import ScriptMaker
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from pip._vendor import pkg_resources
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wheel_ext = '.whl'
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VERSION_COMPATIBLE = (1, 0)
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def rehash(path, algo='sha256', blocksize=1<<20):
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"""Return (hash, length) for path using hashlib.new(algo)"""
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h = hashlib.new(algo)
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length = 0
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with open(path, 'rb') as f:
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block = f.read(blocksize)
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while block:
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length += len(block)
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h.update(block)
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block = f.read(blocksize)
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digest = 'sha256='+urlsafe_b64encode(h.digest()).decode('latin1').rstrip('=')
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return (digest, length)
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try:
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unicode
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def binary(s):
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if isinstance(s, unicode):
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return s.encode('ascii')
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return s
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except NameError:
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def binary(s):
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if isinstance(s, str):
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return s.encode('ascii')
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def open_for_csv(name, mode):
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if sys.version_info[0] < 3:
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nl = {}
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bin = 'b'
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else:
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nl = { 'newline': '' }
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bin = ''
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return open(name, mode + bin, **nl)
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def fix_script(path):
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"""Replace #!python with #!/path/to/python
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Return True if file was changed."""
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# XXX RECORD hashes will need to be updated
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if os.path.isfile(path):
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script = open(path, 'rb')
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try:
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firstline = script.readline()
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if not firstline.startswith(binary('#!python')):
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return False
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exename = sys.executable.encode(sys.getfilesystemencoding())
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firstline = binary('#!') + exename + binary(os.linesep)
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rest = script.read()
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finally:
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script.close()
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script = open(path, 'wb')
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try:
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script.write(firstline)
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script.write(rest)
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finally:
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script.close()
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return True
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dist_info_re = re.compile(r"""^(?P<namever>(?P<name>.+?)(-(?P<ver>\d.+?))?)
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\.dist-info$""", re.VERBOSE)
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def root_is_purelib(name, wheeldir):
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"""
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Return True if the extracted wheel in wheeldir should go into purelib.
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"""
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name_folded = name.replace("-", "_")
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for item in os.listdir(wheeldir):
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match = dist_info_re.match(item)
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if match and match.group('name') == name_folded:
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with open(os.path.join(wheeldir, item, 'WHEEL')) as wheel:
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for line in wheel:
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line = line.lower().rstrip()
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if line == "root-is-purelib: true":
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return True
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return False
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def get_entrypoints(filename):
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if not os.path.exists(filename):
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return {}, {}
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# This is done because you can pass a string to entry_points wrappers which
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# means that they may or may not be valid INI files. The attempt here is to
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# strip leading and trailing whitespace in order to make them valid INI
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# files.
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with open(filename) as fp:
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data = StringIO()
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for line in fp:
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data.write(line.strip())
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data.write("\n")
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data.seek(0)
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cp = ConfigParser.RawConfigParser()
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cp.readfp(data)
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console = {}
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gui = {}
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if cp.has_section('console_scripts'):
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console = dict(cp.items('console_scripts'))
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if cp.has_section('gui_scripts'):
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gui = dict(cp.items('gui_scripts'))
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return console, gui
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def move_wheel_files(name, req, wheeldir, user=False, home=None, root=None,
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pycompile=True, scheme=None):
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"""Install a wheel"""
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if not scheme:
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scheme = distutils_scheme(name, user=user, home=home, root=root)
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if root_is_purelib(name, wheeldir):
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lib_dir = scheme['purelib']
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else:
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lib_dir = scheme['platlib']
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info_dir = []
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data_dirs = []
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source = wheeldir.rstrip(os.path.sep) + os.path.sep
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# Record details of the files moved
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# installed = files copied from the wheel to the destination
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# changed = files changed while installing (scripts #! line typically)
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# generated = files newly generated during the install (script wrappers)
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installed = {}
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changed = set()
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generated = []
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# Compile all of the pyc files that we're going to be installing
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if pycompile:
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compileall.compile_dir(source, force=True, quiet=True)
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def normpath(src, p):
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return make_path_relative(src, p).replace(os.path.sep, '/')
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def record_installed(srcfile, destfile, modified=False):
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"""Map archive RECORD paths to installation RECORD paths."""
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oldpath = normpath(srcfile, wheeldir)
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newpath = normpath(destfile, lib_dir)
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installed[oldpath] = newpath
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if modified:
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changed.add(destfile)
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def clobber(source, dest, is_base, fixer=None, filter=None):
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if not os.path.exists(dest): # common for the 'include' path
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os.makedirs(dest)
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for dir, subdirs, files in os.walk(source):
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basedir = dir[len(source):].lstrip(os.path.sep)
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destdir = os.path.join(dest, basedir)
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if is_base and basedir.split(os.path.sep, 1)[0].endswith('.data'):
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continue
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for s in subdirs:
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destsubdir = os.path.join(dest, basedir, s)
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if is_base and basedir == '' and destsubdir.endswith('.data'):
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data_dirs.append(s)
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continue
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elif (is_base
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and s.endswith('.dist-info')
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# is self.req.project_name case preserving?
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and s.lower().startswith(req.project_name.replace('-', '_').lower())):
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assert not info_dir, 'Multiple .dist-info directories'
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info_dir.append(destsubdir)
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for f in files:
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# Skip unwanted files
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if filter and filter(f):
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continue
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srcfile = os.path.join(dir, f)
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destfile = os.path.join(dest, basedir, f)
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# directory creation is lazy and after the file filtering above
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# to ensure we don't install empty dirs; empty dirs can't be
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# uninstalled.
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if not os.path.exists(destdir):
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os.makedirs(destdir)
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# use copy2 (not move) to be extra sure we're not moving
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# directories over; copy2 fails for directories. this would
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# fail tests (not during released/user execution)
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shutil.copy2(srcfile, destfile)
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changed = False
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if fixer:
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changed = fixer(destfile)
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record_installed(srcfile, destfile, changed)
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clobber(source, lib_dir, True)
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assert info_dir, "%s .dist-info directory not found" % req
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# Get the defined entry points
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ep_file = os.path.join(info_dir[0], 'entry_points.txt')
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console, gui = get_entrypoints(ep_file)
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def is_entrypoint_wrapper(name):
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# EP, EP.exe and EP-script.py are scripts generated for
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# entry point EP by setuptools
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if name.lower().endswith('.exe'):
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matchname = name[:-4]
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elif name.lower().endswith('-script.py'):
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matchname = name[:-10]
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elif name.lower().endswith(".pya"):
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matchname = name[:-4]
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else:
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matchname = name
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# Ignore setuptools-generated scripts
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return (matchname in console or matchname in gui)
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for datadir in data_dirs:
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fixer = None
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filter = None
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for subdir in os.listdir(os.path.join(wheeldir, datadir)):
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fixer = None
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if subdir == 'scripts':
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fixer = fix_script
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filter = is_entrypoint_wrapper
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source = os.path.join(wheeldir, datadir, subdir)
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dest = scheme[subdir]
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clobber(source, dest, False, fixer=fixer, filter=filter)
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maker = ScriptMaker(None, scheme['scripts'])
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# Ensure we don't generate any variants for scripts because this is almost
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# never what somebody wants.
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# See https://bitbucket.org/pypa/distlib/issue/35/
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maker.variants = set(('', ))
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# This is required because otherwise distlib creates scripts that are not
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# executable.
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# See https://bitbucket.org/pypa/distlib/issue/32/
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maker.set_mode = True
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# Simplify the script and fix the fact that the default script swallows
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# every single stack trace.
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# See https://bitbucket.org/pypa/distlib/issue/34/
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# See https://bitbucket.org/pypa/distlib/issue/33/
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def _get_script_text(entry):
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return maker.script_template % {
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"module": entry.prefix,
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"import_name": entry.suffix.split(".")[0],
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"func": entry.suffix,
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}
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maker._get_script_text = _get_script_text
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maker.script_template = """# -*- coding: utf-8 -*-
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import re
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import sys
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from %(module)s import %(import_name)s
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if __name__ == '__main__':
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sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
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sys.exit(%(func)s())
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"""
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# Special case pip and setuptools to generate versioned wrappers
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#
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# The issue is that some projects (specifically, pip and setuptools) use
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# code in setup.py to create "versioned" entry points - pip2.7 on Python
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# 2.7, pip3.3 on Python 3.3, etc. But these entry points are baked into
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# the wheel metadata at build time, and so if the wheel is installed with
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# a *different* version of Python the entry points will be wrong. The
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# correct fix for this is to enhance the metadata to be able to describe
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# such versioned entry points, but that won't happen till Metadata 2.0 is
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# available.
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# In the meantime, projects using versioned entry points will either have
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# incorrect versioned entry points, or they will not be able to distribute
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# "universal" wheels (i.e., they will need a wheel per Python version).
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#
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# Because setuptools and pip are bundled with _ensurepip and virtualenv,
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# we need to use universal wheels. So, as a stopgap until Metadata 2.0, we
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# override the versioned entry points in the wheel and generate the
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# correct ones. This code is purely a short-term measure until Metadat 2.0
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# is available.
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#
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# To add the level of hack in this section of code, in order to support
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# ensurepip this code will look for an ``ENSUREPIP_OPTIONS`` environment
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# variable which will control which version scripts get installed.
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#
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# ENSUREPIP_OPTIONS=altinstall
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# - Only pipX.Y and easy_install-X.Y will be generated and installed
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# ENSUREPIP_OPTIONS=install
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# - pipX.Y, pipX, easy_install-X.Y will be generated and installed. Note
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# that this option is technically if ENSUREPIP_OPTIONS is set and is
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# not altinstall
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# DEFAULT
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# - The default behavior is to install pip, pipX, pipX.Y, easy_install
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# and easy_install-X.Y.
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pip_script = console.pop('pip', None)
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if pip_script:
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if "ENSUREPIP_OPTIONS" not in os.environ:
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spec = 'pip = ' + pip_script
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generated.extend(maker.make(spec))
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if os.environ.get("ENSUREPIP_OPTIONS", "") != "altinstall":
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spec = 'pip%s = %s' % (sys.version[:1], pip_script)
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generated.extend(maker.make(spec))
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spec = 'pip%s = %s' % (sys.version[:3], pip_script)
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generated.extend(maker.make(spec))
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# Delete any other versioned pip entry points
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pip_ep = [k for k in console if re.match(r'pip(\d(\.\d)?)?$', k)]
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for k in pip_ep:
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del console[k]
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easy_install_script = console.pop('easy_install', None)
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if easy_install_script:
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if "ENSUREPIP_OPTIONS" not in os.environ:
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spec = 'easy_install = ' + easy_install_script
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generated.extend(maker.make(spec))
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spec = 'easy_install-%s = %s' % (sys.version[:3], easy_install_script)
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generated.extend(maker.make(spec))
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# Delete any other versioned easy_install entry points
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easy_install_ep = [k for k in console
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if re.match(r'easy_install(-\d\.\d)?$', k)]
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for k in easy_install_ep:
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del console[k]
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# Generate the console and GUI entry points specified in the wheel
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if len(console) > 0:
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generated.extend(maker.make_multiple(['%s = %s' % kv for kv in console.items()]))
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if len(gui) > 0:
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generated.extend(maker.make_multiple(['%s = %s' % kv for kv in gui.items()], {'gui': True}))
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record = os.path.join(info_dir[0], 'RECORD')
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temp_record = os.path.join(info_dir[0], 'RECORD.pip')
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with open_for_csv(record, 'r') as record_in:
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with open_for_csv(temp_record, 'w+') as record_out:
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|
|
reader = csv.reader(record_in)
|
||
|
|
writer = csv.writer(record_out)
|
||
|
|
for row in reader:
|
||
|
|
row[0] = installed.pop(row[0], row[0])
|
||
|
|
if row[0] in changed:
|
||
|
|
row[1], row[2] = rehash(row[0])
|
||
|
|
writer.writerow(row)
|
||
|
|
for f in generated:
|
||
|
|
h, l = rehash(f)
|
||
|
|
writer.writerow((f, h, l))
|
||
|
|
for f in installed:
|
||
|
|
writer.writerow((installed[f], '', ''))
|
||
|
|
shutil.move(temp_record, record)
|
||
|
|
|
||
|
|
def _unique(fn):
|
||
|
|
@functools.wraps(fn)
|
||
|
|
def unique(*args, **kw):
|
||
|
|
seen = set()
|
||
|
|
for item in fn(*args, **kw):
|
||
|
|
if item not in seen:
|
||
|
|
seen.add(item)
|
||
|
|
yield item
|
||
|
|
return unique
|
||
|
|
|
||
|
|
# TODO: this goes somewhere besides the wheel module
|
||
|
|
@_unique
|
||
|
|
def uninstallation_paths(dist):
|
||
|
|
"""
|
||
|
|
Yield all the uninstallation paths for dist based on RECORD-without-.pyc
|
||
|
|
|
||
|
|
Yield paths to all the files in RECORD. For each .py file in RECORD, add
|
||
|
|
the .pyc in the same directory.
|
||
|
|
|
||
|
|
UninstallPathSet.add() takes care of the __pycache__ .pyc.
|
||
|
|
"""
|
||
|
|
from pip.req import FakeFile # circular import
|
||
|
|
r = csv.reader(FakeFile(dist.get_metadata_lines('RECORD')))
|
||
|
|
for row in r:
|
||
|
|
path = os.path.join(dist.location, row[0])
|
||
|
|
yield path
|
||
|
|
if path.endswith('.py'):
|
||
|
|
dn, fn = os.path.split(path)
|
||
|
|
base = fn[:-3]
|
||
|
|
path = os.path.join(dn, base+'.pyc')
|
||
|
|
yield path
|
||
|
|
|
||
|
|
|
||
|
|
def wheel_version(source_dir):
|
||
|
|
"""
|
||
|
|
Return the Wheel-Version of an extracted wheel, if possible.
|
||
|
|
|
||
|
|
Otherwise, return False if we couldn't parse / extract it.
|
||
|
|
"""
|
||
|
|
try:
|
||
|
|
dist = [d for d in pkg_resources.find_on_path(None, source_dir)][0]
|
||
|
|
|
||
|
|
wheel_data = dist.get_metadata('WHEEL')
|
||
|
|
wheel_data = Parser().parsestr(wheel_data)
|
||
|
|
|
||
|
|
version = wheel_data['Wheel-Version'].strip()
|
||
|
|
version = tuple(map(int, version.split('.')))
|
||
|
|
return version
|
||
|
|
except:
|
||
|
|
return False
|
||
|
|
|
||
|
|
|
||
|
|
def check_compatibility(version, name):
|
||
|
|
"""
|
||
|
|
Raises errors or warns if called with an incompatible Wheel-Version.
|
||
|
|
|
||
|
|
Pip should refuse to install a Wheel-Version that's a major series
|
||
|
|
ahead of what it's compatible with (e.g 2.0 > 1.1); and warn when
|
||
|
|
installing a version only minor version ahead (e.g 1.2 > 1.1).
|
||
|
|
|
||
|
|
version: a 2-tuple representing a Wheel-Version (Major, Minor)
|
||
|
|
name: name of wheel or package to raise exception about
|
||
|
|
|
||
|
|
:raises UnsupportedWheel: when an incompatible Wheel-Version is given
|
||
|
|
"""
|
||
|
|
if not version:
|
||
|
|
raise UnsupportedWheel(
|
||
|
|
"%s is in an unsupported or invalid wheel" % name
|
||
|
|
)
|
||
|
|
if version[0] > VERSION_COMPATIBLE[0]:
|
||
|
|
raise UnsupportedWheel(
|
||
|
|
"%s's Wheel-Version (%s) is not compatible with this version "
|
||
|
|
"of pip" % (name, '.'.join(map(str, version)))
|
||
|
|
)
|
||
|
|
elif version > VERSION_COMPATIBLE:
|
||
|
|
logger.warn('Installing from a newer Wheel-Version (%s)'
|
||
|
|
% '.'.join(map(str, version)))
|
||
|
|
|
||
|
|
|
||
|
|
class Wheel(object):
|
||
|
|
"""A wheel file"""
|
||
|
|
|
||
|
|
# TODO: maybe move the install code into this class
|
||
|
|
|
||
|
|
wheel_file_re = re.compile(
|
||
|
|
r"""^(?P<namever>(?P<name>.+?)-(?P<ver>\d.*?))
|
||
|
|
((-(?P<build>\d.*?))?-(?P<pyver>.+?)-(?P<abi>.+?)-(?P<plat>.+?)
|
||
|
|
\.whl|\.dist-info)$""",
|
||
|
|
re.VERBOSE)
|
||
|
|
|
||
|
|
def __init__(self, filename):
|
||
|
|
"""
|
||
|
|
:raises InvalidWheelFilename: when the filename is invalid for a wheel
|
||
|
|
"""
|
||
|
|
wheel_info = self.wheel_file_re.match(filename)
|
||
|
|
if not wheel_info:
|
||
|
|
raise InvalidWheelFilename("%s is not a valid wheel filename." % filename)
|
||
|
|
self.filename = filename
|
||
|
|
self.name = wheel_info.group('name').replace('_', '-')
|
||
|
|
# we'll assume "_" means "-" due to wheel naming scheme
|
||
|
|
# (https://github.com/pypa/pip/issues/1150)
|
||
|
|
self.version = wheel_info.group('ver').replace('_', '-')
|
||
|
|
self.pyversions = wheel_info.group('pyver').split('.')
|
||
|
|
self.abis = wheel_info.group('abi').split('.')
|
||
|
|
self.plats = wheel_info.group('plat').split('.')
|
||
|
|
|
||
|
|
# All the tag combinations from this file
|
||
|
|
self.file_tags = set((x, y, z) for x in self.pyversions for y
|
||
|
|
in self.abis for z in self.plats)
|
||
|
|
|
||
|
|
def support_index_min(self, tags=None):
|
||
|
|
"""
|
||
|
|
Return the lowest index that one of the wheel's file_tag combinations
|
||
|
|
achieves in the supported_tags list e.g. if there are 8 supported tags,
|
||
|
|
and one of the file tags is first in the list, then return 0. Returns
|
||
|
|
None is the wheel is not supported.
|
||
|
|
"""
|
||
|
|
if tags is None: # for mock
|
||
|
|
tags = pep425tags.supported_tags
|
||
|
|
indexes = [tags.index(c) for c in self.file_tags if c in tags]
|
||
|
|
return min(indexes) if indexes else None
|
||
|
|
|
||
|
|
def supported(self, tags=None):
|
||
|
|
"""Is this wheel supported on this system?"""
|
||
|
|
if tags is None: # for mock
|
||
|
|
tags = pep425tags.supported_tags
|
||
|
|
return bool(set(tags).intersection(self.file_tags))
|
||
|
|
|
||
|
|
|
||
|
|
class WheelBuilder(object):
|
||
|
|
"""Build wheels from a RequirementSet."""
|
||
|
|
|
||
|
|
def __init__(self, requirement_set, finder, wheel_dir, build_options=[], global_options=[]):
|
||
|
|
self.requirement_set = requirement_set
|
||
|
|
self.finder = finder
|
||
|
|
self.wheel_dir = normalize_path(wheel_dir)
|
||
|
|
self.build_options = build_options
|
||
|
|
self.global_options = global_options
|
||
|
|
|
||
|
|
def _build_one(self, req):
|
||
|
|
"""Build one wheel."""
|
||
|
|
|
||
|
|
base_args = [
|
||
|
|
sys.executable, '-c',
|
||
|
|
"import setuptools;__file__=%r;"\
|
||
|
|
"exec(compile(open(__file__).read().replace('\\r\\n', '\\n'), __file__, 'exec'))" % req.setup_py] + \
|
||
|
|
list(self.global_options)
|
||
|
|
|
||
|
|
logger.notify('Running setup.py bdist_wheel for %s' % req.name)
|
||
|
|
logger.notify('Destination directory: %s' % self.wheel_dir)
|
||
|
|
wheel_args = base_args + ['bdist_wheel', '-d', self.wheel_dir] + self.build_options
|
||
|
|
try:
|
||
|
|
call_subprocess(wheel_args, cwd=req.source_dir, show_stdout=False)
|
||
|
|
return True
|
||
|
|
except:
|
||
|
|
logger.error('Failed building wheel for %s' % req.name)
|
||
|
|
return False
|
||
|
|
|
||
|
|
def build(self):
|
||
|
|
"""Build wheels."""
|
||
|
|
|
||
|
|
#unpack and constructs req set
|
||
|
|
self.requirement_set.prepare_files(self.finder)
|
||
|
|
|
||
|
|
reqset = self.requirement_set.requirements.values()
|
||
|
|
|
||
|
|
buildset = [req for req in reqset if not req.is_wheel]
|
||
|
|
|
||
|
|
if not buildset:
|
||
|
|
return
|
||
|
|
|
||
|
|
#build the wheels
|
||
|
|
logger.notify(
|
||
|
|
'Building wheels for collected packages: %s' %
|
||
|
|
','.join([req.name for req in buildset])
|
||
|
|
)
|
||
|
|
logger.indent += 2
|
||
|
|
build_success, build_failure = [], []
|
||
|
|
for req in buildset:
|
||
|
|
if self._build_one(req):
|
||
|
|
build_success.append(req)
|
||
|
|
else:
|
||
|
|
build_failure.append(req)
|
||
|
|
logger.indent -= 2
|
||
|
|
|
||
|
|
#notify sucess/failure
|
||
|
|
if build_success:
|
||
|
|
logger.notify('Successfully built %s' % ' '.join([req.name for req in build_success]))
|
||
|
|
if build_failure:
|
||
|
|
logger.notify('Failed to build %s' % ' '.join([req.name for req in build_failure]))
|