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> in the new srfis I've seen a new syntax form called land* , which > seems to be a hybrid between let* & and. [...] What would be the > preferrable way to write a land* module for guile? Yeah, I like land* a lot, although I wouldn't mind a better name. I posted some comments to the SRFI. I think the best implementation would be as a macro which is smart about the code it generates, expanding to a series of lets and ifs. I don't think the performance would be too bad.