[README] add warning regarding Ubuntu mpi4py bug

pymor · Sep 27, 2016 · 5f7f958 · 5f7f958
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diff --git a/README.md b/README.md
@@ -113,6 +113,11 @@ via your package manager. For Debian-based systems, try:
 
 Again, all these dependencies can also be installed directly via pip.
 
+**Warning:** Ubuntu 16.04 currently ships
+[broken](https://bugs.launchpad.net/ubuntu/+source/mpi4py/+bug/1583432) mpi4py
+packages which will cause pyMOR to fail at import time. Fixed packages can be
+found in the [pyMOR PPA](https://launchpad.net/~pymor/+archive/stable).
+
 
 Documentation
 -------------

diff --git a/README.txt b/README.txt
@@ -112,6 +112,10 @@ Debian-based systems, try:
 
 Again, all these dependencies can also be installed directly via pip.
 
+Warning: Ubuntu 16.04 currently ships broken mpi4py packages which will
+cause pyMOR to fail at import time. Fixed packages can be found in the
+pyMOR PPA.
+
 Documentation
 -------------