Thank you so much Ricardo, you have no idea how big of a thorn you removed from my side. I owe you one.
Ricardo Wurmus <rek...@elephly.net> writes: > e...@beaver-labs.com writes: > >> For example, given that "minimal-container" is an operating system, I >> can do the following: >> >> (set-fields minimal-container ((operating-system-host-name) "toto")) >> >> But not: >> >> (set-fields minimal-container ((operating-system-label) "toto")) > > In Guile we usually try to avoid mutation like that. The records API > allows you to use inheritance instead: > > (operating-system > (inherit minimal-container) > (label "toto")) > > Thunking just means that the field is a procedure that returns a value > when called with no arguments. The records in (guix records) are not > plain SRFI9 records, so I would not expect set-fields to work at all.
