oils-for-unix
./install _bin/cxx-opt-sh/oils-for-unix at the root of source tree will install the executable oils-for-unix.osh and ysh to that executable, in the style of busybox.
osh is very compatible with POSIX sh and bash, while ysh flips some switches to make it a coherent new language.bin/osh runs POSIX shell scripts and many bash scripts. bin/ysh is an improved shell language.See https://oils.pub/release/latest/doc/help-mirror.html
oil-$VERSION tarball was renamed oils-ref-$VERSIONThe recommended tarball is oils-for-unix-$VERSION, not oil-$VERSION
Some people were using the old oil tarball, which is obsolete (as of 2024)
oils-ref should not be packaged. It is for people who want to verify that Oils has an "executable spec" that runs under CPython. It is not meant to be used.