False program extension

[arkrwn]

Please check your main program extension, it's 'hapoid.hs' not 'hapoid.sh' which '.sh' is a shell extension should be.

[wisn]

Hello, @lidilidian~
The shell file is for installation only.
It is install.sh for compile the Haskell file (.hs) and move the compiled binary file to /usr/bin directory.
Hope this explanation makes it clear 😄