[docs] add Python 3.7 as supported on MacOs but declare that four tes…

…ts are skipped

README.rst

@@ -45,7 +45,8 @@ System Requirements
 ``mdciao`` is developed in GNU/Linux, and CI-tested via `github actions <https://github.com/gph82/mdciao/actions?query=workflow%3A%22Python+package%22>`_ for GNU/Linux and MacOs. Tested python versions are:
 
 * GNU/Linux: 3.7, 3.8, 3.9, 3.10, 3.11
-* MacOs: 3.8, 3.9, 3.10, 3.11. Python 3.7 is unofficially supported on MacOs, but there are some segmentation faults (`which wont fix <https://github.com/mdtraj/mdtraj/issues/1574>`_) when using `md.compute_dssp <https://github.com/mdtraj/mdtraj/issues/1473>`_ which make the CI tests fail.
+* MacOs: 3.7, 3.8, 3.9, 3.10, 3.11. For Python 3.7, four CI-tests involving `mdtraj.compute_dssp <https://www.mdtraj.org/1.9.8.dev0/api/generated/mdtraj.compute_dssp.html?highlight=dssp#mdtraj.compute_dssp>`_ ,
+are skipped because of a hard to repdroduce, random segmentation fault, which apparently wont fix, see here `<https://github.com/mdtraj/mdtraj/issues/1574>`_ and  `here <https://github.com/mdtraj/mdtraj/issues/1473>`_.
 
 So everything should work *out of the box* in these conditions.
 

doc/installation.rst

@@ -101,14 +101,11 @@ Operating systems and Python versions
 ``mdciao`` is developed in GNU/Linux, and CI-tested via `github actions <https://github.com/gph82/mdciao/actions?query=workflow%3A%22Python+package%22>`_ for GNU/Linux and MacOs. Tested python versions are:
 
 * GNU/Linux: 3.7, 3.8, 3.9, 3.10, 3.11
-* MacOs: 3.8, 3.9, 3.10, 3.11. Python 3.7 is unofficially supported on MacOs, but there are some segmentation faults (`which wont fix <https://github.com/mdtraj/mdtraj/issues/1574>`_) when using `md.compute_dssp <https://github.com/mdtraj/mdtraj/issues/1473>`_ which make the CI tests fail.
+* MacOs: 3.7, 3.8, 3.9, 3.10, 3.11. For Python 3.7, four CI-tests involving `mdtraj.compute_dssp <https://www.mdtraj.org/1.9.8.dev0/api/generated/mdtraj.compute_dssp.html?highlight=dssp#mdtraj.compute_dssp>`_ ,
+are skipped because of a hard to repdroduce, random segmentation fault, which apparently wont fix, see here `<https://github.com/mdtraj/mdtraj/issues/1574>`_ and  `here <https://github.com/mdtraj/mdtraj/issues/1473>`_.
 
 So everything should work *out of the box* in these conditions. Please see this warning_ for problems during installation from source.
 
-.. note::
- MacOs CI tests sometimes fail with (semi)random segmentation faults, in particular when using mdtraj and compute_dssp, but are in principle sane. (`example of recently passed test <https://github.com/gph82/mdciao/actions/runs/2648833037>`_, `example of recently failed tests <https://github.com/gph82/mdciao/runs/7272124587?check_suite_focus=true>`_). More the details on the segmentation error (139 and 11) when `calling mdtraj.dsssp can be found here <https://github.com/gph82/mdciao/runs/2415051993?check_suite_focus=true>`_.
-
-
 Python interpreter and environment
 ----------------------------------
 `conda <https://docs.conda.io/en/latest/>`_ and `pip <https://pypi.org/project/pip/>`_ are very popular, user friendly package managers. **A very nice feature** of `conda` is that it installs its own ``python`` interpreter, separate from the system's Python. It does so in the user's home directory, s.t. no root privileges are needed at any moment.