slapos.rebootstrap 3.3

Rerun buildout with a python provided by buildout
===============================================

Buildout 2.0 no-longer supports using multiple versions of Python in a
single buildout. This extension makes it possible to use 'yet another
single' version of python, by building a specified python part and its
dependencies first then reinvoking buildout with the executable.

Usage
-----

A part to build python is required. You need to specify it by `python`
parameter in `buildout` section, just same as buildout 1.x. The python
section must provide executable option that gives the path to a Python
executable.

And add slapos.rebootstrap to `extensions` parameter in `buildout` section.

Use whatever python to bootstrap and run buildout. If this extension
detects that sys.executable used to run buildout is different than
executable provided in python section, it will try to find this
executable. If it does not exists, it will install this section and
then reinstall buildout using new python executable. Later buildout
run will continue using new python.

Example profile and invocation
------------------------------
::

[buildout]
extensions = slapos.rebootstrap
python = slapospython

parts =
realrun

[slapospython]
recipe = plone.recipe.command
stop-on-error = true
command = mkdir -p ${buildout:parts-directory}/${:__section_name__}/bin &&
cp -f /usr/bin/python ${:executable}

[realrun]
recipe = plone.recipe.command
command =
echo Running with python ${buildout:executable}
update-command = ${:command}

After bootstrapping and running this buildout it will print:

Running with python /path/to/buildout/parts/slapospython/bin/slapospython

Running tests
-------------

Test for this package can be run as simple as:

$ python setup.py test

Please keep in mind that clean python environment is required -- the best one is
provided by buildout or virtualenv *WITHOUT* site packages.


Changes
=======

3.3 (2016-01-20)
----------------

* Ignore MissingSection exception in _uninstall_part().

3.2 (2015-11-10)
----------------

* Support zc.buildout >= 2.0.0.
* Same parts directory as the normal buildout is used so that we can
build faster and also make the code simpler.
* Python part is now specified by `python` parameter in `buildout`
section.
* Restart automatically with the original python when running python
part is removed.

3.1 (2011-06-24)
----------------

* Support eggs parameter in rebootstrap section in order to add additional
eggs for rebootstrapped buildout. [Łukasz Nowak]

3.0 (2011-05-27)
----------------

* Renamed from slapos.tool.rebootstrap 2.4 [Łukasz Nowak]

Technical documentation
=======================

Support for extensions
----------------------

>>> import sys
>>> mkdir(sample_buildout, 'recipes')
>>> write(sample_buildout, 'recipes', 'setup.py',
... """
... from setuptools import setup
...
... setup(
... name = "recipes",
... entry_points = {'zc.buildout':[
... 'pyinstall = pyinstall:Pyinstall',
... 'pyshow = pyshow:Pyshow',
... ],
... 'zc.buildout.extension': ['ext = extension:extension'],},
... )
... """)
>>> write(sample_buildout, 'recipes', 'README.txt', " ")
>>> write(sample_buildout, 'recipes', 'extension.py',
... """
... def extension(buildout):
... print 'Special extension run'
... """)
>>> write(sample_buildout, 'recipes', 'pyinstall.py',
... """
... import os, zc.buildout, shutil, sys
...
... class Pyinstall:
...
... def __init__(self, buildout, name, options):
... self.name, self.options = name, options
... self.destination = os.path.join(buildout['buildout'][
... 'parts-directory'], self.options.get('python', name))
...
... def install(self):
... for d in [self.destination, os.path.join(self.destination, 'bin')]:
... if not os.path.exists(d):
... os.mkdir(d)
... python = os.path.join(self.destination, 'bin', self.name)
... if not os.path.exists(python):
... shutil.copy(sys.executable, python)
... return []
...
... update = install
... """)
>>> write(sample_buildout, 'recipes', 'pyshow.py',
... """
... import os, zc.buildout, shutil, sys
...
... class Pyshow:
...
... def __init__(self, buildout, name, options):
... self.name, self.options = name, options
...
... def install(self):
... print 'Running with:', sys.executable
... return []
...
... update = install
... """)
>>> write(sample_buildout, 'buildout.cfg',
... """
... [buildout]
... develop = recipes
... parts =
... """)
>>> print system(buildout),
Develop: '/sample-buildout/recipes'
>>> write(sample_buildout, 'buildout.cfg',
... """
... [buildout]
... develop = recipes
... extensions = slapos.rebootstrap recipes
...
... parts =
... realrun
...
... [rebootstrap]
... section =
... installpython
... version =
... 1
...
... [installpython]
... recipe = recipes:pyinstall
...
... [realrun]
... recipe = recipes:pyshow
... """ % dict(syspython=sys.executable))
>>> print system(buildout),
slapos.rebootstrap: Installing section 'installpython' to provide '/sample-buildout/rebootstrap.1.parts/installpython/bin/installpython' in '/sample-buildout/rebootstrap.1.parts'
slapos.rebootstrap: Rerunning buildout to install section installpython with arguments ['/sample-buildout/bin/buildout', 'buildout:parts=installpython', 'buildout:extensions=recipes', '/sample-buildout/rebootstrap.1.parts', 'buildout:installed=.rebootstrap.1.installed.cfg'].
Special extension run
Creating directory '/sample-buildout/rebootstrap.1.parts'.
Develop: '/sample-buildout/recipes'
Installing installpython.
slapos.rebootstrap:
************ REBOOTSTRAP: IMPORTANT NOTICE ************
bin/buildout is being reinstalled right now, as new python:
/sample_buildout/rebootstrap.1.parts/installpython/bin/installpython
is available, and buildout is using another python:
/system_python
Buildout will be restarted automatically to have this change applied.
************ REBOOTSTRAP: IMPORTANT NOTICE ************
<BLANKLINE>
Generated script '/sample-buildout/bin/buildout'.
Special extension run
Develop: '/sample-buildout/recipes'
Installing realrun.
Running with: /sample_buildout/rebootstrap.1.parts/installpython/bin/installpython


Default invocation
------------------

>>> import sys
>>> mkdir(sample_buildout, 'recipes')
>>> write(sample_buildout, 'recipes', 'setup.py',
... """
... from setuptools import setup
...
... setup(
... name = "recipes",
... entry_points = {'zc.buildout':[
... 'pyinstall = pyinstall:Pyinstall',
... 'pyshow = pyshow:Pyshow',
... ]},
... )
... """)
>>> write(sample_buildout, 'recipes', 'README.txt', " ")
>>> write(sample_buildout, 'recipes', 'pyinstall.py',
... """
... import os, zc.buildout, shutil, sys
...
... class Pyinstall:
...
... def __init__(self, buildout, name, options):
... self.name, self.options = name, options
... self.destination = os.path.join(buildout['buildout'][
... 'parts-directory'], self.options.get('python', name))
...
... def install(self):
... for d in [self.destination, os.path.join(self.destination, 'bin')]:
... if not os.path.exists(d):
... os.mkdir(d)
... python = os.path.join(self.destination, 'bin', self.name)
... if not os.path.exists(python):
... shutil.copy(sys.executable, python)
... return []
...
... update = install
... """)
>>> write(sample_buildout, 'recipes', 'pyshow.py',
... """
... import os, zc.buildout, shutil, sys
...
... class Pyshow:
...
... def __init__(self, buildout, name, options):
... self.name, self.options = name, options
...
... def install(self):
... print 'Running with:', sys.executable
... return []
...
... update = install
... """)
>>> write(sample_buildout, 'buildout.cfg',
... """
... [buildout]
... develop = recipes
... parts =
... """)
>>> print system(buildout),
Develop: '/sample-buildout/recipes'
>>> write(sample_buildout, 'buildout.cfg',
... """
... [buildout]
... develop = recipes
... extensions = slapos.rebootstrap
...
... parts =
... realrun
...
... [rebootstrap]
... section =
... installpython
... version =
... 1
...
... [installpython]
... recipe = recipes:pyinstall
...
... [realrun]
... recipe = recipes:pyshow
... """ % dict(syspython=sys.executable))
>>> print system(buildout),
slapos.rebootstrap: Installing section 'installpython' to provide '/sample-buildout/rebootstrap.1.parts/installpython/bin/installpython' in '/sample-buildout/rebootstrap.1.parts'
slapos.rebootstrap: Rerunning buildout to install section installpython with arguments ['/sample-buildout/bin/buildout', 'buildout:parts=installpython', 'buildout:extensions=', '/sample-buildout/rebootstrap.1.parts', 'buildout:installed=.rebootstrap.1.installed.cfg'].
Creating directory '/sample-buildout/rebootstrap.1.parts'.
Develop: '/sample-buildout/recipes'
Installing installpython.
slapos.rebootstrap:
************ REBOOTSTRAP: IMPORTANT NOTICE ************
bin/buildout is being reinstalled right now, as new python:
/sample_buildout/rebootstrap.1.parts/installpython/bin/installpython
is available, and buildout is using another python:
/system_python
Buildout will be restarted automatically to have this change applied.
************ REBOOTSTRAP: IMPORTANT NOTICE ************
<BLANKLINE>
Generated script '/sample-buildout/bin/buildout'.
Develop: '/sample-buildout/recipes'
Installing realrun.
Running with: /sample_buildout/rebootstrap.1.parts/installpython/bin/installpython


Support of cases when reboostrap part exists
--------------------------------------------

>>> import sys
>>> mkdir(sample_buildout, 'recipes')
>>> write(sample_buildout, 'recipes', 'setup.py',
... """
... from setuptools import setup
...
... setup(
... name = "recipes",
... entry_points = {'zc.buildout':[
... 'pyinstall = pyinstall:Pyinstall',
... 'pyshow = pyshow:Pyshow',
... ]},
... )
... """)
>>> write(sample_buildout, 'recipes', 'README.txt', " ")
>>> write(sample_buildout, 'recipes', 'pyinstall.py',
... """
... import os, zc.buildout, shutil, sys
...
... class Pyinstall:
...
... def __init__(self, buildout, name, options):
... self.name, self.options = name, options
... self.destination = os.path.join(buildout['buildout'][
... 'parts-directory'], self.options.get('python', name))
...
... def install(self):
... for d in [self.destination, os.path.join(self.destination, 'bin')]:
... if not os.path.exists(d):
... os.mkdir(d)
... python = os.path.join(self.destination, 'bin', self.name)
... if not os.path.exists(python):
... shutil.copy(sys.executable, python)
... return []
...
... update = install
... """)
>>> write(sample_buildout, 'recipes', 'pyshow.py',
... """
... import os, zc.buildout, shutil, sys
...
... class Pyshow:
...
... def __init__(self, buildout, name, options):
... self.name, self.options = name, options
...
... def install(self):
... print 'Running with:', sys.executable
... return []
...
... update = install
... """)
>>> write(sample_buildout, 'buildout.cfg',
... """
... [buildout]
... develop = recipes
... parts =
... """)
>>> print system(buildout),
Develop: '/sample-buildout/recipes'
>>> write(sample_buildout, 'buildout.cfg',
... """
... [buildout]
... develop = recipes
... extensions = slapos.rebootstrap
...
... parts =
... realrun
...
... [rebootstrap]
... section =
... installpython
... version =
... 1
...
... [installpython]
... recipe = recipes:pyinstall
...
... [realrun]
... recipe = recipes:pyshow
... """ % dict(syspython=sys.executable))
>>> import os
>>> os.mkdir('rebootstrap.1.parts')
>>> print system(buildout),
slapos.rebootstrap: Installing section 'installpython' to provide '/sample-buildout/rebootstrap.1.parts/installpython/bin/installpython' in '/sample-buildout/rebootstrap.1.parts'
slapos.rebootstrap: Rerunning buildout to install section installpython with arguments ['/sample-buildout/bin/buildout', 'buildout:parts=installpython', 'buildout:extensions=', '/sample-buildout/rebootstrap.1.parts', 'buildout:installed=.rebootstrap.1.installed.cfg'].
Develop: '/sample-buildout/recipes'
Installing installpython.
slapos.rebootstrap:
************ REBOOTSTRAP: IMPORTANT NOTICE ************
bin/buildout is being reinstalled right now, as new python:
/sample_buildout/rebootstrap.1.parts/installpython/bin/installpython
is available, and buildout is using another python:
/system_python
Buildout will be restarted automatically to have this change applied.
************ REBOOTSTRAP: IMPORTANT NOTICE ************
<BLANKLINE>
Generated script '/sample-buildout/bin/buildout'.
Develop: '/sample-buildout/recipes'
Installing realrun.
Running with: /sample_buildout/rebootstrap.1.parts/installpython/bin/installpython


Support for additional eggs
---------------------------

>>> import sys
>>> mkdir(sample_buildout, 'addegg')
>>> write(sample_buildout, 'addegg', 'setup.py',
... """
... from setuptools import setup
...
... setup(
... name = "additionalegg",
... entry_points = {'zc.buildout.extension':[
... 'extension = extension:extension',
... ]},
... )
... """)
>>> write(sample_buildout, 'addegg', 'extension.py',
... """
... def extension(buildout):
... print 'Extension available in buildout.'
... """)
>>> write(sample_buildout, 'addegg', 'README.txt', " ")
>>> mkdir(sample_buildout, 'recipes')
>>> write(sample_buildout, 'recipes', 'setup.py',
... """
... from setuptools import setup
...
... setup(
... name = "recipes",
... entry_points = {'zc.buildout':[
... 'pyinstall = pyinstall:Pyinstall',
... 'pyshow = pyshow:Pyshow',
... ]},
... )
... """)
>>> write(sample_buildout, 'recipes', 'README.txt', " ")
>>> write(sample_buildout, 'recipes', 'pyinstall.py',
... """
... import os, zc.buildout, shutil, sys
...
... class Pyinstall:
...
... def __init__(self, buildout, name, options):
... self.name, self.options = name, options
... self.destination = os.path.join(buildout['buildout'][
... 'parts-directory'], self.options.get('python', name))
...
... def install(self):
... for d in [self.destination, os.path.join(self.destination, 'bin')]:
... if not os.path.exists(d):
... os.mkdir(d)
... python = os.path.join(self.destination, 'bin', self.name)
... if not os.path.exists(python):
... shutil.copy(sys.executable, python)
... return []
...
... update = install
... """)
>>> write(sample_buildout, 'recipes', 'pyshow.py',
... """
... import os, zc.buildout, shutil, sys
...
... class Pyshow:
...
... def __init__(self, buildout, name, options):
... self.name, self.options = name, options
...
... def install(self):
... print 'Running with:', sys.executable
... return []
...
... update = install
... """)
>>> write(sample_buildout, 'buildout.cfg',
... """
... [buildout]
... develop = recipes addegg
... parts =
... """)
>>> print system(buildout),
Develop: '/sample-buildout/recipes'
Develop: '/sample-buildout/addegg'
>>> write(sample_buildout, 'buildout.cfg',
... """
... [buildout]
... develop = recipes addegg
... extensions = slapos.rebootstrap
...
... parts =
... realrun
...
... [rebootstrap]
... section =
... installpython
... version =
... 1
... eggs =
... additionalegg
...
... [installpython]
... recipe = recipes:pyinstall
...
... [realrun]
... recipe = recipes:pyshow
... """ % dict(syspython=sys.executable))
>>> print system(buildout),
slapos.rebootstrap: Installing section 'installpython' to provide '/sample-buildout/rebootstrap.1.parts/installpython/bin/installpython' in '/sample-buildout/rebootstrap.1.parts'
slapos.rebootstrap: Rerunning buildout to install section installpython with arguments ['/sample-buildout/bin/buildout', 'buildout:parts=installpython', 'buildout:extensions=', '/sample-buildout/rebootstrap.1.parts', 'buildout:installed=.rebootstrap.1.installed.cfg'].
Creating directory '/sample-buildout/rebootstrap.1.parts'.
Develop: '/sample-buildout/recipes'
Develop: '/sample-buildout/addegg'
Installing installpython.
slapos.rebootstrap:
************ REBOOTSTRAP: IMPORTANT NOTICE ************
bin/buildout is being reinstalled right now, as new python:
/sample_buildout/rebootstrap.1.parts/installpython/bin/installpython
is available, and buildout is using another python:
/system_python
Buildout will be restarted automatically to have this change applied.
************ REBOOTSTRAP: IMPORTANT NOTICE ************
<BLANKLINE>
Generated script '/sample-buildout/bin/buildout'.
Extension available in buildout.
Develop: '/sample-buildout/recipes'
Develop: '/sample-buildout/addegg'
Installing realrun.
Running with: /sample_buildout/rebootstrap.1.parts/installpython/bin/installpython



Support of own python path
--------------------------

>>> import sys
>>> mkdir(sample_buildout, 'recipes')
>>> write(sample_buildout, 'recipes', 'setup.py',
... """
... from setuptools import setup
...
... setup(
... name = "recipes",
... entry_points = {'zc.buildout':[
... 'pyinstall = pyinstall:Pyinstall',
... 'pyshow = pyshow:Pyshow',
... ]},
... )
... """)
>>> write(sample_buildout, 'recipes', 'README.txt', " ")
>>> write(sample_buildout, 'recipes', 'pyinstall.py',
... """
... import os, zc.buildout, shutil, sys
...
... class Pyinstall:
...
... def __init__(self, buildout, name, options):
... self.name, self.options = name, options
... self.destination = os.path.join(buildout['buildout'][
... 'parts-directory'], name)
...
... def install(self):
... for d in [self.destination, os.path.join(self.destination, 'bin')]:
... if not os.path.exists(d):
... os.mkdir(d)
... python = self.options.get('python', os.path.join('bin', self.name))
... python = os.path.join(self.destination, python)
... if not os.path.exists(python):
... shutil.copy(sys.executable, python)
... return []
...
... update = install
... """)
>>> write(sample_buildout, 'recipes', 'pyshow.py',
... """
... import os, zc.buildout, shutil, sys
...
... class Pyshow:
...
... def __init__(self, buildout, name, options):
... self.name, self.options = name, options
...
... def install(self):
... print 'Running with:', sys.executable
... return []
...
... update = install
... """)
>>> write(sample_buildout, 'buildout.cfg',
... """
... [buildout]
... develop = recipes
... parts =
... """)
>>> print system(buildout),
Develop: '/sample-buildout/recipes'
>>> write(sample_buildout, 'buildout.cfg',
... """
... [buildout]
... develop = recipes
... extensions = slapos.rebootstrap
...
... parts =
... realrun
...
... [rebootstrap]
... section =
... installpython
... version =
... 1
... python-path =
... anotherpython
...
... [installpython]
... recipe = recipes:pyinstall
... python = anotherpython
...
... [realrun]
... recipe = recipes:pyshow
... """ % dict(syspython=sys.executable))
>>> print system(buildout),
slapos.rebootstrap: Installing section 'installpython' to provide '/sample-buildout/rebootstrap.1.parts/installpython/anotherpython' in '/sample-buildout/rebootstrap.1.parts'
slapos.rebootstrap: Rerunning buildout to install section installpython with arguments ['/sample-buildout/bin/buildout', 'buildout:parts=installpython', 'buildout:extensions=', '/sample-buildout/rebootstrap.1.parts', 'buildout:installed=.rebootstrap.1.installed.cfg'].
Creating directory '/sample-buildout/rebootstrap.1.parts'.
Develop: '/sample-buildout/recipes'
Installing installpython.
slapos.rebootstrap:
************ REBOOTSTRAP: IMPORTANT NOTICE ************
bin/buildout is being reinstalled right now, as new python:
/sample_buildout/rebootstrap.1.parts/installpython/anotherpython
is available, and buildout is using another python:
/system_python
Buildout will be restarted automatically to have this change applied.
************ REBOOTSTRAP: IMPORTANT NOTICE ************
<BLANKLINE>
Generated script '/sample-buildout/bin/buildout'.
Develop: '/sample-buildout/recipes'
Installing realrun.
Running with: /sample_buildout/rebootstrap.1.parts/installpython/anotherpython


Support of upgrade
------------------

>>> import sys
>>> mkdir(sample_buildout, 'recipes')
>>> write(sample_buildout, 'recipes', 'setup.py',
... """
... from setuptools import setup
...
... setup(
... name = "recipes",
... entry_points = {'zc.buildout':[
... 'pyinstall = pyinstall:Pyinstall',
... 'pyshow = pyshow:Pyshow',
... ]},
... )
... """)
>>> write(sample_buildout, 'recipes', 'README.txt', " ")
>>> write(sample_buildout, 'recipes', 'pyinstall.py',
... """
... import os, zc.buildout, shutil, sys
...
... class Pyinstall:
...
... def __init__(self, buildout, name, options):
... self.name, self.options = name, options
... self.destination = os.path.join(buildout['buildout'][
... 'parts-directory'], self.options.get('python', name))
...
... def install(self):
... for d in [self.destination, os.path.join(self.destination, 'bin')]:
... if not os.path.exists(d):
... os.mkdir(d)
... python = os.path.join(self.destination, 'bin', self.name)
... if not os.path.exists(python):
... shutil.copy(sys.executable, python)
... return []
...
... update = install
... """)
>>> write(sample_buildout, 'recipes', 'pyshow.py',
... """
... import os, zc.buildout, shutil, sys
...
... class Pyshow:
...
... def __init__(self, buildout, name, options):
... self.name, self.options = name, options
...
... def install(self):
... print 'Running with:', sys.executable
... return []
...
... update = install
... """)
>>> write(sample_buildout, 'buildout.cfg',
... """
... [buildout]
... develop = recipes
... parts =
... """)
>>> print system(buildout),
Develop: '/sample-buildout/recipes'
>>> write(sample_buildout, 'buildout.cfg',
... """
... [buildout]
... develop = recipes
... extensions = slapos.rebootstrap
...
... parts =
... realrun
...
... [rebootstrap]
... section =
... installpython
... version =
... 1
...
... [installpython]
... recipe = recipes:pyinstall
...
... [realrun]
... recipe = recipes:pyshow
... """ % dict(syspython=sys.executable))
>>> print system(buildout),
slapos.rebootstrap: Installing section 'installpython' to provide '/sample-buildout/rebootstrap.1.parts/installpython/bin/installpython' in '/sample-buildout/rebootstrap.1.parts'
slapos.rebootstrap: Rerunning buildout to install section installpython with arguments ['/sample-buildout/bin/buildout', 'buildout:parts=installpython', 'buildout:extensions=', '/sample-buildout/rebootstrap.1.parts', 'buildout:installed=.rebootstrap.1.installed.cfg'].
Creating directory '/sample-buildout/rebootstrap.1.parts'.
Develop: '/sample-buildout/recipes'
Installing installpython.
slapos.rebootstrap:
************ REBOOTSTRAP: IMPORTANT NOTICE ************
bin/buildout is being reinstalled right now, as new python:
/sample_buildout/rebootstrap.1.parts/installpython/bin/installpython
is available, and buildout is using another python:
/system_python
Buildout will be restarted automatically to have this change applied.
************ REBOOTSTRAP: IMPORTANT NOTICE ************
<BLANKLINE>
Generated script '/sample-buildout/bin/buildout'.
Develop: '/sample-buildout/recipes'
Installing realrun.
Running with: /sample_buildout/rebootstrap.1.parts/installpython/bin/installpython
>>> write(sample_buildout, 'buildout.cfg',
... """
... [buildout]
... develop = recipes
... extensions = slapos.rebootstrap
...
... parts =
... realrun
...
... [rebootstrap]
... section =
... installpython
... version =
... 2
...
... [installpython]
... recipe = recipes:pyinstall
...
... [realrun]
... recipe = recipes:pyshow
... """ % dict(syspython=sys.executable))
>>> print system(buildout),
slapos.rebootstrap: Installing section 'installpython' to provide '/sample-buildout/rebootstrap.2.parts/installpython/bin/installpython' in '/sample-buildout/rebootstrap.2.parts'
slapos.rebootstrap: Rerunning buildout to install section installpython with arguments ['/sample-buildout/bin/buildout', 'buildout:parts=installpython', 'buildout:extensions=', '/sample-buildout/rebootstrap.2.parts', 'buildout:installed=.rebootstrap.2.installed.cfg'].
Creating directory '/sample-buildout/rebootstrap.2.parts'.
Develop: '/sample-buildout/recipes'
Installing installpython.
slapos.rebootstrap:
************ REBOOTSTRAP: IMPORTANT NOTICE ************
bin/buildout is being reinstalled right now, as new python:
/sample_buildout/rebootstrap.2.parts/installpython/bin/installpython
is available, and buildout is using another python:
/sample_buildout/rebootstrap.1.parts/installpython/bin/installpython
Buildout will be restarted automatically to have this change applied.
************ REBOOTSTRAP: IMPORTANT NOTICE ************
<BLANKLINE>
Generated script '/sample-buildout/bin/buildout'.
Develop: '/sample-buildout/recipes'
Updating realrun.
Running with: /sample_buildout/rebootstrap.2.parts/installpython/bin/installpython
>>> write(sample_buildout, 'buildout.cfg',
... """
... [buildout]
... develop = recipes
... extensions = slapos.rebootstrap
...
... parts =
... realrun
...
... [rebootstrap]
... section =
... installpython
... version =
... 1
...
... [installpython]
... recipe = recipes:pyinstall
...
... [realrun]
... recipe = recipes:pyshow
... """ % dict(syspython=sys.executable))
>>> print system(buildout),
slapos.rebootstrap:
************ REBOOTSTRAP: IMPORTANT NOTICE ************
bin/buildout is being reinstalled right now, as new python:
/sample_buildout/rebootstrap.1.parts/installpython/bin/installpython
is available, and buildout is using another python:
/sample_buildout/rebootstrap.2.parts/installpython/bin/installpython
Buildout will be restarted automatically to have this change applied.
************ REBOOTSTRAP: IMPORTANT NOTICE ************
<BLANKLINE>
Generated script '/sample-buildout/bin/buildout'.
Develop: '/sample-buildout/recipes'
Updating realrun.
Running with: /sample_buildout/rebootstrap.1.parts/installpython/bin/installpython