Hi, When using guix import crate flamer, it generates a pattern like (arguments `((#:cargo-inputs (("rust-flame" ,rust-flame) ("rust-quote" ,rust-quote) ("rust-syn" ,rust-syn))))) the correct pattern would however be (arguments `(#:cargo-inputs (("rust-flame" ,rust-flame) ("rust-quote" ,rust-quote) ("rust-syn" ,rust-syn)))) The same is true for cargo-development-inputs. I’m currently fixing that by hand, but a fix would be really useful. Best wishes, Arne -- Unpolitisch sein heißt politisch sein ohne es zu merken