Create a complete self contained virtualenv bootstrap file by enbed 'get-pip.py'
Project description
bootstrap_env
Experimental project to create a complete self contained virtualenv bootstrap file. See: packaging-problems issues 55
info
Since virtualenv v1.10 you a virtualenv bootstrap file is not runnable without the pip and setuptools wheel files. There must be created a virtualenv_support with the wheels.
e.g.:
/bootstrap.py
/virtualenv_support/
pip-1.5.6-py2.py3-none-any.whl
setuptools-3.6-py2.py3-none-any.whl
With this project this is not needed. The current solution embed get_pip.py into the bootstrap file and call it after env creation.
the example
The included example will create a boot_example.py bootstrap file. Running this looks like:
~ $ python2 boot_example.py ~/testenv The additional example extend_parser() code is called. The additional example adjust_options() code is called. New python executable in /home/jens/testenv/bin/python2 Also creating executable in /home/jens/testenv/bin/python call to install pip with: '/home/jens/testenv/bin/python /path/to/bootstrap_env/boot_example.py --install-pip /home/jens/testenv' install pip from self contained 'get_pip.py' Downloading/unpacking pip Downloading pip-1.5.6-py2.py3-none-any.whl (1.0MB): 1.0MB downloaded Downloading/unpacking setuptools Downloading setuptools-6.0.2-py2.py3-none-any.whl (543kB): 543kB downloaded Installing collected packages: pip, setuptools Successfully installed pip setuptools Cleaning up... The additional example after_install() code is called.
The example hook code stored separated files in example directory looks like this:
def extend_parser(parser):
# --- CUT here ---
sys.stdout.write("The additional example extend_parser() code is called.\n")
def adjust_options(options, args):
# --- CUT here ---
sys.stdout.write("The additional example adjust_options() code is called.\n")
def after_install(options, home_dir):
# --- CUT here ---
sys.stdout.write("The additional example after_install() code is called.\n")
Creating the example bootstrap file looks like this:
/path/to/bootstrap_env/ $ python2 example.py Generate bootstrap file: 'boot_example.py'... Reade code from: 'example/extend_parser.py'... Reade code from: 'example/adjust_options.py'... Reade code from: 'example/after_install.py'... Reade code from: '/path/to/bootstrap_env/bootstrap_env/bootstrap_install_pip.py'... Request: 'https://raw.githubusercontent.com/pypa/pip/master/contrib/get-pip.py'... get-pip.py SHA256: 'd43dc33a5670d69dd14a9be1f2b2fa27ebf124ec1b212a47425331040f742a9b', ok. 'boot_example.py' written.
After the first call, the requested get-pip.py file will be cached into the default temp and reused from there. So it is fast to generate it again:
/path/to/bootstrap_env/ $ python2 example.py Generate bootstrap file: 'boot_example.py'... Reade code from: 'example/extend_parser.py'... Reade code from: 'example/adjust_options.py'... Reade code from: 'example/after_install.py'... Reade code from: '/path/to/bootstrap_env/bootstrap_env/bootstrap_install_pip.py'... Use '/tmp/get-pip.py' get-pip.py SHA256: 'd43dc33a5670d69dd14a9be1f2b2fa27ebf124ec1b212a47425331040f742a9b', ok. 'boot_example.py' written.
usage
To create you own bootstrap file, is easy. Just copy the example code and change it for your needs.
Another example are the bootstrap usage in PyLucid django-cms branch.
History
v0.3.1 - 14.11.2014 - Bugfix for “error: no such option:” while pip install, if own optional options are used.
v0.3.0 - 13.11.2014 - typo: rename all bootstrip to bootstrap ;)
v0.2.0 - 09.10.2014 - add prefix and suffix argument to generate_bootstrap()
v0.1.0 - 09.10.2014 - initial release
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