Could not play unfortunately, I got the following error
```
eval: variable } has no value
in file fns.lsp
in file ./swamp.lsp
This was running under Linux with guix package manager and ```guix shell --pure libsixel femtolisp -- ./swamp.lsp```
After building femtolisp from source (I noticed you shared a different source than available in guix) I got another error message:
divide-error: div0: /: division by zero
in file swamp.lsp
Also I assume I need to play this in a sixel enabled terminal?
Sorry, but I give up.
It mentions in the readme you have to be running a terminal emulator that supports sixel drawing. I get the same error _iff_ that's NOT an emulator supporting sixel.
I suggest trying either Contour or xterm with the flags mentioned in the readme.
