I decided to run it on system without bash as neofetch replacement. It feels unreasonably complex, I spent unreasonable amount of time fighting with cmake. On normal system I have pfetch in my bashrc, since it’s basically instant, and neofetch for screenshots. It’s not instant, but I don’t run it every second or something.
And btw I do love speed and simplicity of C, but for fetch tool, POSIX shell is the best choice, I think.