Am Fr., 29. März 2019 um 11:48 Uhr schrieb Aaron Hill <[email protected]>: > > On 2019-03-29 3:37 am, Thomas Morley wrote: > > Am Fr., 29. März 2019 um 10:00 Uhr schrieb Richard Shann > > <[email protected]>: > >> This sounds like a problem I had when Denemo started running under > >> Guile 2 - I asked on the guile mailing list and got fixed up with > >> this: > >> > >> ;;; for guile 2.0 compatibility define the define-once procedure to > >> work in guile 1.8 > >> (cond-expand > >> (guile-2) ; nothing > >> (else ; guile < 2.0 > >> (define-macro (define-once sym exp) > >> `(define ,sym > >> (if (module-locally-bound? (current-module) ',sym) > >> ,sym > >> ,exp))))) > >> > >> Apologies in advance if this is un-related, I've not been following > >> this thread :( > >> > >> Richard > > > > Hi Richard, > > > > I tried to understand what you've got from the guile-list. > > > > Thus I opened a guilev2 prompt and simply typed cond-expand: > > > > scheme@(guile-user)> (version) > > $1 = "2.2.4.9-71f536" > > scheme@(guile-user)> cond-expand > > While compiling expression: > > Syntax error: > > unknown location: source expression failed to match any pattern in > > form cond-expand > > scheme@(guile-user)> > > > > Well, ok, the guile-manual says: > > 7.5.2 SRFI-0 - cond-expand > > [...] > > > > So I tried: > > > > scheme@(guile-user)> (use-modules (srfi srfi-0)) > > While compiling expression: > > no code for module (srfi srfi-0) > > > > What am I missing? > > Looks like srfi-0 is built into guile 2, so there is no module to use > anymore. > > But cond-expand does work if you do something with it: > > scheme@(guile-user)> (cond-expand (guile-2 'hi)) > $2 = hi > > -- Aaron Hill
Yeah, I should have read a little more: 7.5.2 SRFI-0 - cond-expand [...] There’s no module to load, this is in the Guile core. Though, then I'd expect scheme@(guile-user)> cond-expand not returning an error. But surely my expectations are wong. Even scheme@(guile-user)> if errors. :( Harm _______________________________________________ lilypond-user mailing list [email protected] https://lists.gnu.org/mailman/listinfo/lilypond-user
