[packetpirate]

Maybe I'm just lazy, but from a quick glance, this language seems a little too wordy for my tastes... why "import_module" instead of just "import"? Or "write_string" instead of "write"? I prefer a terse programming language that uses more descriptive keywords in favor of more of them.

But I suppose that's not really the most important factor of a language and the syntax could be fun to try out.

[astrange → packetpirate]

Putting types in the keywords is sensible if you don't have multimethods/generic functions. I don't remember if Mercury has those or not.