> On Feb 14, 2019, at 3:44 AM, Antoine Pitrou <solip...@pitrou.net> wrote: > > On Thu, 14 Feb 2019 00:57:36 -0500 > Jason Swails <jason.swa...@gmail.com> wrote: >> >> I literally just ran into this problem now. Part of a software suite I've >> written uses Python to fetch updates during the installation process. Due >> to the target audience, it needs to access the system Python (only), and >> support systems as old as RHEL 5 (Python 2.4 and later, including Python >> 3.x in the same code base, using nothing but the stdlib). The shebang line >> was "#!/usr/bin/env python" >> >> It's been working for years, but was only now reported broken by a user >> that upgraded their Ubuntu distribution and suddenly had no "python" >> executable anywhere. But they had python3. >> >> I suspect suddenly not having any "python" executable in a Linux system >> will screw up a lot more people than just me. The workaround was ugly. > > I'm not sure what you mean. Isn't the workaround to install Python 2 > in this case?
I release the software, so the problem is not my machine, it’s others’. The installation process also fetches a local miniconda distribution for the Python utilities that are part of the program suite (and the python programs are optional and typically not installed when this suite is deployed on a supercomputer, for instance). But the software needs to check for updates before it does any of that (hence my concern — this script needs to be able to run before the user does *anything* else, including installing dependencies). This would also be the first time we’d have to give different installation instructions for different versions of the same Linux distro. The workaround from a users perspective is simple for me, but I can’t make that same assumption for all of my users. This is an impediment to keeping the user experience as simple as possible. Thanks, Jason
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