There are two places a new shell language needs to be ubiquitous for success. One is installed on systems, which is pretty easy. With today's connectedness, new

There are two places a new shell language needs to be ubiquitous for success. One is installed on systems, which is pretty easy. With today's connectedness, new software is just an apt install, pacman, or curl | bash away. The other, much harder problem is that the people using the system need to know this new shell language. If I have to debug your shell script using Zsh, Csh, or Fish, I'm not going to be happy about it.