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: --8<---------------cut here---------------start------------->8--- $ 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 --8<---------------cut here---------------end--------------->8--- Compared to ‘core-updates’: --8<---------------cut here---------------start------------->8--- $ 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 --8<---------------cut here---------------end--------------->8--- > 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. > Then there are optimizations to work on, but that can take a bit longer. > In particular, in ‘gexp->derivation’, allow file-like objects to be > specified as environment variable values. In turn, use that so that, > say, ‘gnu-build-system’ has a single builder for all its packages and > just calls ‘getenv’ to get the value of its various parameters, similar > to what (guix git-download) does. I’m also starting work in this area. Ludo’.
