Hi Ludo! Ludovic Courtès <l...@gnu.org> writes:
> Hello! > > Ludovic Courtès <l...@gnu.org> skribis: > >> Ludovic Courtès <l...@gnu.org> skribis: >> >>> Over the last few days I’ve been head-down working on >>> ‘wip-build-systems-gexp’, the mythical branch that brings gexps to build >>> systems and packages, so we can say goodbye to >>> ‘build-expression->derivation’. And… it’s quite a ride! >> >> The current tip of ‘wip-build-systems-gexp’ Just Works; it’s being built, >> it can build ‘guix’ and cross-build things like ‘sed’: >> >> >> https://data.guix-patches.cbaines.net/repository/2/branch/wip-build-systems-gexp >> >> https://ci.guix.gnu.org/jobset/wip-build-systems-gexp (though Cuirass >> currently has unrelated problems) > > It’s building and well! > >> In terms of performance, there’s still a ~10% slowdown when computing >> derivations compared to the ‘core-updates’ revision the branch is based >> on. > > I made some improvements yesterday (reducing object cache lookups and > the number of entries therein), but we’re still in the 10% ballpark. > WIP branch: > > $ git log |head -5 > commit 082df93be3472e0f38970634260af8c432420b35 > Author: Ludovic Courtès <l...@gnu.org> > Date: Mon Mar 8 13:59:23 2021 +0100 > > gnu: docbook-xsl: Move 'use-modules' form to the top level. > $ time GUIX_PROFILING=gc ./pre-inst-env guix build libreoffice --no-grafts -d > /gnu/store/fsrbbi8vfrwwdz2dlyzpfvvnky03nczz-libreoffice-6.4.7.2.drv > Garbage collection statistics: > heap size: 87.18 MiB > allocated: 254.25 MiB > GC times: 16 > time spent in GC: 0.74 seconds (31% of user time) > > real 0m2.225s > user 0m2.415s > sys 0m0.087s > > > Compared to ‘core-updates’: > > $ git log |head -5 > commit b35581bd63d929e83d18f42b067f63efc867353c > Author: Efraim Flashner <efr...@flashner.co.il> > Date: Sun Mar 21 09:42:06 2021 +0200 > > gnu: openjpeg: Update to 2.4.0. > $ time GUIX_PROFILING=gc ./pre-inst-env guix build libreoffice --no-grafts -d > /gnu/store/irdhm6jx30bgdxvgb0an1mn223rzshkg-libreoffice-6.4.7.2.drv > Garbage collection statistics: > heap size: 79.18 MiB > allocated: 216.51 MiB > GC times: 16 > time spent in GC: 0.74 seconds (33% of user time) > > real 0m2.094s > user 0m2.277s > sys 0m0.106s This looks reasonable! >> Here’s what I’d like to do in the coming days, if that doesn’t interfere >> with what others have in mind for the upcoming release: >> >> • Monitor build failures due to typos/thinkos made while adjusting >> build systems; >> >> • Merge on ‘core-updates’. > > I’ll go ahead with that if there are no objections. Sounds good! Thanks for picking up this work! :-) Maxim