bug#22536: guix lint

> There may other places to fix, see . Yeah, there's one at guix/build/download.scm in function "progress-proc". I checked what "string-pad-middle" - which is used by the function "progress-proc" - does and I... object to it in priciple. What it does is add padding

bug#22536: Progress on the guix download progress display

A quick try to get a prefer-the-tail string concatenator to work - still has some limitations: (define (abbreviate text len) (string-take text (min len (string-length text (define (abbreviate-texts-prefer-to-take-tail texts len) "Given a list of strings TEXTS, returns a string,