I get
error: failed to read `/[dir]/littlewing/Cargo.toml`
Caused by:
No such file or directory (os error 2)
It's similar to the problem I was encountering before - the lack of a cargo.toml file that led me to the "sudo cargo new gatchi --bin" command I tried above.
I tried copying the Cargo.toml file from desktop_games into gatchi but that didn't seem to help.