93 lines
2.6 KiB
Python
93 lines
2.6 KiB
Python
import os
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import os.path
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import pkgutil
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import sys
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import tempfile
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# TODO: Remove the --pre flag when a pip 1.5 final copy is available
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__all__ = ["version", "bootstrap"]
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_SETUPTOOLS_VERSION = "1.3.2"
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_PIP_VERSION = "1.5.dev1"
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_PROJECTS = [
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("setuptools", _SETUPTOOLS_VERSION),
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("pip", _PIP_VERSION),
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]
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def _run_pip(args, additional_paths):
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# Add our bundled software to the sys.path so we can import it
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sys.path = additional_paths + sys.path
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# Install the bundled software
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import pip
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pip.main(args)
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def version():
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"""
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Returns a string specifying the bundled version of pip.
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"""
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return _PIP_VERSION
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def bootstrap(*, root=None, upgrade=False, user=False,
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altinstall=False, default_pip=False,
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verbosity=0):
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"""
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Bootstrap pip into the current Python installation (or the given root
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directory).
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"""
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if altinstall and default_pip:
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raise ValueError("Cannot use altinstall and default_pip together")
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# By default, installing pip and setuptools installs all of the
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# following scripts (X.Y == running Python version):
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#
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# pip, pipX, pipX.Y, easy_install, easy_install-X.Y
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#
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# pip 1.5+ allows ensurepip to request that some of those be left out
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if altinstall:
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# omit pip, pipX and easy_install
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os.environ["ENSUREPIP_OPTIONS"] = "altinstall"
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elif not default_pip:
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# omit pip and easy_install
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os.environ["ENSUREPIP_OPTIONS"] = "install"
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with tempfile.TemporaryDirectory() as tmpdir:
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# Put our bundled wheels into a temporary directory and construct the
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# additional paths that need added to sys.path
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additional_paths = []
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for project, version in _PROJECTS:
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wheel_name = "{}-{}-py2.py3-none-any.whl".format(project, version)
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whl = pkgutil.get_data(
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"ensurepip",
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"_bundled/{}".format(wheel_name),
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)
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with open(os.path.join(tmpdir, wheel_name), "wb") as fp:
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fp.write(whl)
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additional_paths.append(os.path.join(tmpdir, wheel_name))
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# Construct the arguments to be passed to the pip command
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args = [
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"install", "--no-index", "--find-links", tmpdir,
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# Temporary until pip 1.5 is final
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"--pre",
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]
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if root:
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args += ["--root", root]
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if upgrade:
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args += ["--upgrade"]
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if user:
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args += ["--user"]
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if verbosity:
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args += ["-" + "v" * verbosity]
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_run_pip(args + [p[0] for p in _PROJECTS], additional_paths)
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