On Sat, 18 Apr 2020, Satish Balay via petsc-dev wrote: > On Sat, 18 Apr 2020, Jed Brown wrote: > > > Satish Balay <ba...@mcs.anl.gov> writes: > > > > > Sure - the initial premise of this thread [as I understood] was: > > > /usr/bin/python is python2. On python3 only installs - there is no > > > /usr/bin/python (for ex: jedbrown/mpich-ccache docker file) - so we need > > > to fix this issue in configure. > > > > > > I'm guessing that most installs will have /usr/bin/python as python2 or > > > python3 - so missing /usr/bin/python is a smaller problem. Its not clear > > > to me why this is missing in jedbrown/mpich-ccache - and how many OSes or > > > distro will default to this mode. > > > > On Debian and Ubuntu, /usr/bin/python is part of python2; it isn't created > > if you `apt install python3`. > > Ok - that a large userbase. > > So when python2 deprecated in debian - there won't be /usr/bin/python anymore?
Also - debian does alternatives - don't know if they can setup a default python [python2 vs python3] through this mechanism - and have anyone installed as default. [for ex: I think if openmpi is installed /usr/bin/mpicc is automatically setup as default via /etc/alternatives. I don't know if the same happens for mpich] Satish
