>>120
I've never seen akku or snow have edwin extensions and I'm assuming something must exist even if it's a dead project from decades ago. Usual code hosts come up with about 4 edwin extensions when using the equivalent ?lang=scheme&q=edwin and they don't have a sexpr entry.
I also don't like the way akku handles srfis but other then that it's a better source once you understand (chibi) ~= r7rs. Which is worded horribly and I'm sure a (chibi package) will eventually use a chibism.
>>121
Ah, I just found one of the portable Edwinsen you mentioned. I'd expect there to be some random FTP or open-directory somewhere if anything. I don't have much time to search currently but maybe someone else knows what's up. Here's what I got just now, not quite what you want:
https://birchwood-abbey.net/~matt/Scheme/
http://mumble.net/~campbell/darcs/