Re: Guile 2 (was: Cairo plans)

[Jean Abou Samra]

Le 05/09/2021 à 22:46, Jonas Hahnfeld via Discussions on LilyPond 
development a écrit :
> Hm, when Harm brought up this point in the previous thread in May, I
> did not understand this to be a critical showstopper for adoption of
> Guile 2.2 (is it?) or I would have prioritized this over working on the
> new infrastructure to compile binaries.

Not critical: it's not like Guile 1 is good at error locations
either or errors in general. But one does encounter a number of
cases where using Guile 1 in LilyPond yields better errors -- at
least this has been my main source of frustration since starting
to build with Guile 2. I guess everybody has their particular
point they would want to see improved before switching to Guile 2.


> IIRC Harm's comments were mostly about not confusing the average user
> with ugly backtraces of Scheme internals - which was solved some time
> ago by only enabling them in debug mode. For the error locations, I had
> some WIP solution for ~80% of the cases (typos and wrong argument
> types) by installing a custom exception handler and manually adding the
> location information of where the parsed code came from. I had hoped to
> revisit this approach over the weekend, but it didn't happen. I cannot
> foresee when I will have time for this, but just to let people know
> that I don't think all hope is lost here.

Nice to hear!

Best,
Jean