ee46e2f9b7
Make a version-less RHEL element to handle both '7' and '8' DIB_RELEASE. The element usage should align with other elements which operate in the same way such as the Fedora element. Additionally, this patch adds support for RHEL8 that operates with Python 3. As of now, users of diskimage-builder will still be able to use the 'rhel7' element, or migrate to 'rhel' and specify their respective DIB_RELEASE value. * mount the xfs file-system for extraction as read-only. vaguely based on explaination in [1] and the fact we only read the image data into a tar, so can ignore this. XFS (dm-1): Superblock has unknown read-only compatible features (0x4) enabled. * Use the redhat system python as the dib-python version. dib was ahead of it's time making an abstracted python interpreter for system work ;) the system python should work for running the various dib element scripts. [1] https://unix.stackexchange.com/questions/247550/unmountable-xfs-filesystem Redhat-Bug: https://bugzilla.redhat.com/show_bug.cgi?id=1700253 Co-Authored-By: Ian Wienand <iwienand@redhat.com> Change-Id: I90540675c70bb475d9db2ae24f81c648a31f3f95 |
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cleanup.d | ||
environment.d | ||
pre-install.d | ||
README.rst |
========== dib-python ========== Adds a symlink to ``/usr/local/bin/dib-python`` which points at either a ``python2`` or ``python3`` executable as appropriate. In-chroot scripts should use this as their interpreter (``#!/usr/local/bin/dib-python``) to make scripts that are compatible with both ``python2`` and ``python3``. We can not assume ``/usr/bin/python`` exists, as some platforms have started shipping with only Python 3. ``DIB_PYTHON`` will be exported as the python interpreter. You should use this instead of ``python script.py`` (e.g. ``${DIB_PYTHON} script.py``). Note you can also call ``/usr/local/bin/dib-python script.py`` but in some circumstances, such as creating a ``virtualenv``, it can create somewhat confusing references to ``dib-python`` that remain in the built image. This does not install a python if one does not exist, and instead fails. This also exports a variable ``DIB_PYTHON_VERSION`` which will either be '2' or '3' depending on the python version which dib-python points to. .. note:: The ``dib-python`` interpreter will be removed in ``cleanup.d``. It is only intended for build scripts.