The only download for the kaleido package on Pypi is a binary. There is no source code on Pypi. The importer recognizes this but then prints a confusing backtrace when attempting to print a hint:
--8<---------------cut here---------------start------------->8--- ./pre-inst-env guix import pypi kaleido guix import: error: no source release for pypi package kaleido 0.2.1.post1 hint: Backtrace: In ice-9/boot-9.scm: 1752:10 18 (with-exception-handler _ _ #:unwind? _ #:unwind-for-type _) In unknown file: 17 (apply-smob/0 #<thunk 7f6fab4442e0>) In ice-9/boot-9.scm: 724:2 16 (call-with-prompt _ _ #<procedure default-prompt-handler (k proc)>) In ice-9/eval.scm: 619:8 15 (_ #(#(#<directory (guile-user) 7f6fab449c80>))) In guix/ui.scm: 2229:7 14 (run-guix . _) 2192:10 13 (run-guix-command _ . _) In guix/scripts/import.scm: 124:11 12 (guix-import . _) In ice-9/boot-9.scm: 1752:10 11 (with-exception-handler _ _ #:unwind? _ #:unwind-for-type _) In guix/scripts/import/pypi.scm: 99:28 10 (_) In guix/memoization.scm: 98:0 9 (mproc "kaleido" #:version #f) In unknown file: 8 (_ #<procedure 7f6fa9f85380 at guix/memoization.scm:179:32 ()> #<procedure list _> (this is nothing)) In ice-9/boot-9.scm: 1685:16 7 (raise-exception _ #:continuable? _) In guix/ui.scm: 806:16 6 (_ _) 316:5 5 (display-hint _ _) 1434:24 4 (texi->plain-text _) In texinfo.scm: 1132:22 3 (parse _) 980:31 2 (loop #<input: string 7f6fa7652620> (*fragment*) _ _ _) 1064:40 1 (_ _ _ (" " "source. To build it from source, refer to the upstream repository at" " " "package is available on PyPI, but o…" …) …) 92:2 0 (loop _ _ _ _) texinfo.scm:92:2: In procedure loop: Throw to key `parser-error' with args `(#f "@-command expected more arguments:" () (url #:opt title replacement) (url #:opt title replacement))'. --8<---------------cut here---------------end--------------->8--- -- Ricardo