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Add information about hwloc env variable that breaks users installs #5229

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23 changes: 23 additions & 0 deletions docs/source/install.rst
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Expand Up @@ -380,6 +380,29 @@ For Homebrew it is sometimes useful to run the command::
as this can flag issues with your system that should be resolved before
installing Firedrake.

Unable to configure PETSc on macOS

Authorization required, but no authorization protocol specified
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

If you see the warning message::

Authorization required, but no authorization protocol specified

printed to your terminal when you run programs then you can fix this
by setting the environment variable::

$ export HWLOC_COMPONENTS="-gl"

Hanging during pip install firedrake
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

If you encounter hanging during ``pip install firedrake`` it is
possible that this can also be fixed by setting the environment
variable::

$ export HWLOC_COMPONENTS="-gl"

.. _customising:

Customising Firedrake
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