bootstrap-env 0.5.2

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.

There are also some helpers to parse pip requirement files and install packages after virtualenv creation. Look into “boot bootstrap_env” project below.

the example

There is a simple example.

To test it, create first the bootstrap file by running create_example.py for it: e.g.:

/path/to/bootstrap-env$ python example_bootstrap/create_example.py

Generate bootstrap file: '/path/to/bootstrap-env/boot_example_env.py'...

Read code from: '.../src/bootstrap-env/example_bootstrap/extend_parser.py'...
Read code from: '.../src/bootstrap-env/example_bootstrap/adjust_options.py'...
Read code from: '.../src/bootstrap-env/example_bootstrap/after_install.py'...
Read code from: '.../src/bootstrap-env/bootstrap_env/bootstrap_install_pip.py'...
Request: 'https://raw.githubusercontent.com/pypa/pip/22baf0ca29325e848010c44a0fec0db64e8d1edb/contrib/get-pip.py'...
Request: 'https://raw.githubusercontent.com/pypa/pip/master/contrib/get-pip.py'...
Requested content of 'get-pip.py' is up-to-date, ok.
get-pip.py SHA256: '51ef604ed2852f6b57b675ebefc4b807cffd2300bfc885761365988d19d227ad', ok.

'/path/to/bootstrap-env/boot_example_env.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$ python example_bootstrap/create_example.py

Generate bootstrap file: '/path/to/bootstrap-env/boot_example_env.py'...

Read code from: '.../src/bootstrap-env/example_bootstrap/extend_parser.py'...
Read code from: '.../src/bootstrap-env/example_bootstrap/adjust_options.py'...
Read code from: '.../src/bootstrap-env/example_bootstrap/after_install.py'...
Read code from: '.../src/bootstrap-env/bootstrap_env/bootstrap_install_pip.py'...
Use '/tmp/get-pip.py'
get-pip.py SHA256: '51ef604ed2852f6b57b675ebefc4b807cffd2300bfc885761365988d19d227ad', ok.

'/path/to/bootstrap-env/boot_example_env.py' written.

Running this looks like:

/path/to/bootstrap-env$ python boot_example_env.py ~/example_env

The additional example extend_parser() code is called.
The additional example adjust_options() code is called.

Using real prefix '/usr'
Path not in prefix '/home/jens/PyLucid_env/include/python3.4m' '/usr'
New python executable in /home/jens/example_env/bin/python
Install pip...
call '/home/jens/example_env/bin/python /home/jens/PyLucid_env/src/bootstrap-env/boot_example_env.py --install-pip /home/jens/example_env'
install pip from self contained 'get_pip.py'
Collecting pip
  Using cached pip-7.0.3-py2.py3-none-any.whl
Collecting setuptools
  Using cached setuptools-17.0-py2.py3-none-any.whl
Collecting wheel
  Using cached wheel-0.24.0-py2.py3-none-any.whl
Installing collected packages: pip, setuptools, wheel
Successfully installed pip-7.0.3 setuptools-17.0 wheel-0.24.0

The additional example after_install() code is called.

The example hook code stored separated files in example_bootstrap directory looks like this:

def extend_parser(parser):
    # --- CUT here ---
    sys.stdout.write("\nThe 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\n")

def after_install(options, home_dir):
    # --- CUT here ---
    sys.stdout.write("\nThe additional example after_install() code is called.\n\n")

usage

To create you own bootstrap file, is easy. Just copy the example or boot_bootstrap_env code and change it for your needs.

Projects that use bootstrap_env are:

• PyLucid django-cms branch

• DwLoadServer

Missing project? Do you use it? Just send me a mail: bootstrap_env AT jensdiemer DOT de or use IRC/Jabber (see below)

boot bootstrap_env

To create a fresh virtualenv with boot.py do the following:

# Download 'boot_bootstrap_env.py' from github:
/home/FooBar$ wget https://raw.githubusercontent.com/jedie/bootstrap_env/master/bootstrap_env/boot.py

# Create virtualenv and use read-only GIT:
/home/FooBar$ python3 boot.py ~/my_bootstrap_env --install_type git_readonly

The created virtualenv is under ~/my_bootstrap_env/ ;)

If you would like to use PyPi packages do this:

# Create virtualenv and use read-only GIT:
/home/FooBar$ python3 boot.py ~/my_bootstrap_env --install_type pypi

The boot.py will be created by create_boot.py this is stored here: /bootstrap_env/boot_bootstrap_env/

This also work under Windows. e.g:

C:\> C:\Python34\python.exe d:\downloads\boot.py --install_type=pypi d:\my_bootstrap_env

There is also a maybe helpful batch file: bootstrap_env/boot.cmd

Request get_pip.py notes

The script file bootstrap_env/create_bootstrap.py will request get_pip.py from https://github.com/pypa/pip/blob/develop/contrib/get-pip.py It verify the content via SHA256 hash. This hash is hardcoded in create_bootstrap.py You will get a warning if a newer get_pip.py was commited. Looks like this:

Request: 'https://raw.githubusercontent.com/pypa/pip/ee6b739fb6e81ddaee64dc5bb686f7ec78ce3d78/contrib/get-pip.py'...
Request: 'https://raw.githubusercontent.com/pypa/pip/master/contrib/get-pip.py'...
WARNING: 'get-pip.py' master changed! Maybe a new version was commited?
Please check:
    https://github.com/pypa/pip/commits/develop/contrib/get-pip.py
And report here:
    https://github.com/jedie/bootstrap_env/issues
get-pip.py SHA256: '0831b76e518a92a82487250fd18973062aa427e9bfab59a3e84d32f8d25b1679', ok.
'../boot_bootstrap_env.py' written.