Commit cf2d0ed0 authored by Xavier Thompson's avatar Xavier Thompson

[doc] Show how to bootstrap an isolated buildout

parent 822116e6
...@@ -102,6 +102,33 @@ specified using *parts*. The parts to be built are listed in the ...@@ -102,6 +102,33 @@ specified using *parts*. The parts to be built are listed in the
name that specifies the software to build the part and provides name that specifies the software to build the part and provides
parameters to control how the part is built. parameters to control how the part is built.
Bootstrapping an isolated environment
=====================================
Sometimes it is useful to install ``zc.buildout`` and its dependencies
directly in ``eggs`` directory and to generate a ``buildout`` script in
the ``bin`` directory that uses the version in ``eggs`` directory,
instead of relying on the package available in the environment.
One way to achieve this uses the ``extra-paths`` option of ``buildout``
section: by setting it to empty value, packages outside of ``eggs``
or ``develop-eggs`` directories will not be considered when looking
for already installed eggs. Then the ``bootstrap`` command will
install ``zc.buildout`` and its dependencies from scratch in ``eggs``.
.. code-block:: console
buildout buildout:extra-paths= bootstrap
After this, the generated ``bin/buildout`` script will use the packages
installed in ``eggs`` directory instead of those in the environment and
preserve the isolation from the environment, even without setting
``extra-paths``. That is because the default value for ``extra-paths``
only considers the paths where ``zc.buildout`` and its dependencies are
found, and in this case that is only the ``eggs`` directory.
Installing software Installing software
=================== ===================
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