Re: Release schedule for 2.20

[Lukas-Fabian Moser]

Am 09.05.2018 um 17:23 schrieb Phil Holmes:
> > > Question: How difficult/costly/... would it be to prepare a "daily
> > > build from current master" for download?
> >
> > Very.  We are talking about 6 hours of build time on a pretty solidly
> > powered 8-processor machine.  Actually, we _were_ talking about that
> > before adding the Catalan translation to the docs and further
> > complicating the Documentation build process in order to get more
> > compact PDFs.
>
> On my GUB build machine (4 core hyperthreaded i7, 8 Gigs, SSD) an 
> incremental build (i.e. with a stable version of GUB with the toolset 
> all up to date) takes around one to one and a half hours. If GUB needs 
> updating, it can, as you say, take over 6 hours even on that machine.  
> The upload is then a few Gigs and on my old broadband this took around 
> 6 hours to upload. My shiny VDSL connection does it in about 5 
> minutes.  So a complete GUB rebuild is feasible.  However, I'm not 
> sure that was what was requested. A simple Linux binary in a specific 
> location of Lilypond.org would be fairly straightforward - about 2 
> minutes for the build and very quick upload.

I admit that I thought more of a binary package than of the full 
documentation (which I gather is very involved to build). A possible 
rationale might be that a power-user who wants to have access to the 
latest features is likely to get to know these features by watching the 
-user or -devel lists, issue trackers etc., so it's maybe not terribly 
important to have the very latest documentation. (But I know that this 
argument could be disputed, for instance regarding the Internals manual).

As for the choice of the platform: One could argue that, e.g., binaries 
for Windows etc. might be even more useful than Linux binaries (which 
are comparatively easy to compile for oneself).

So: What I thought of when I asked about the costs of a "daily build" 
would be something like: Binaries for as many platforms as possible, but 
without the documentation. If something like that would be reasonable at 
all.

Best
Lukas