Shell is used A LOT -- for data science, machine learning, cloud, CI, putting together Linux distros / boostrapping, embedded systems, and other heterogeneous p

Shell is used A LOT -- for data science, machine learning, cloud, CI, putting together Linux distros / boostrapping, embedded systems, and other heterogeneous problems. configure is one use case. And autoconf in particular will probably be around forever, regardless of the existence of Solaris/AIX -- for the simple reason that many old and important packages like coreutils use autoconf. Probably nobody is going to rewrite the coreutils build system soon. (coreutils might be rewritten/obsolete before that happens!) The good news is that OSH can run configure scripts as-is :) It's actually easy to run them, because they are meant to run on many different shells. --- It's also not a binary yes/no thing. Cobol and Fortran aren't dead, but people choose to write new projects in different languages now, and that's good! I had an entire career without seeing any Cobol at all. Zero. Likewise OSH can run POSIX configure scripts forever (and those same configure scripts can be run by /bin/sh and bash) But I think lots of people will choose to write brand new YSH scripts as well. The computing world is only getting more heterogeneous (in both time and space). Shell accomodates that, and Oils is designed to accomodate that.