On a GNU Guix SD System, I run into this situation: I upgraded the system via
guix pull yesterday, thus to upgrading to the very recent tip of the master branch, and some programs do not run any more, saying "executable not found". I traced to these (one example being (gnome) terminator) as calling "python" in the main program which is a python script. I can see via "which" that I have python3 in my $PATH but no "python." Curious how could this happen, and how to fix it? Thanks
