Hi Pierre, Pierre Neidhardt <m...@ambrevar.xyz> skribis:
> Nyxt provides a "guix.scm" to build Nyxt locally: > > https://github.com/atlas-engineer/nyxt/blob/3239b10d816861d329dce10863cb84f9d0bd76ed/build-scripts/guix.scm > > A few weeks ago (not sure exactly when and why), `guix environment -l > guix.scm` started being extremely slow. > > By this, I mean that > > $ guix environment -v 99 --pure --load=build-scripts/guix.scm On a warm cache, I get: --8<---------------cut here---------------start------------->8--- $ time guix environment -l /tmp/nyxt/build-scripts/guix.scm -v2 -n -- true 22.0 MB would be downloaded: /gnu/store/1dr7bkhy8f2v0kgpgm4swl0zrr740zwk-cl-webkit-2.4-10.0bc05cc /gnu/store/bpw4k590597g0n7n868qhlsf2cnclzl0-webkitgtk-2.30.6-doc /gnu/store/j67y7mzb5dyaqln90n3is85nz218bvxp-webkitgtk-2.30.6 real 0m6.060s user 0m7.152s sys 0m0.175s $ time guix environment -l /tmp/nyxt/build-scripts/guix.scm -v2 -n --no-grafts -- true La jena derivo estus konstruata: /gnu/store/apk1g220mh4g2fzddxy28ssmk6fy9wbm-profile.drv 0.0 MB would be downloaded: /gnu/store/1dr7bkhy8f2v0kgpgm4swl0zrr740zwk-cl-webkit-2.4-10.0bc05cc The following profile hooks would be built: /gnu/store/3qhdrwww3yidqk6w98md9w4yfqv7sx4l-xdg-desktop-database.drv /gnu/store/7dnznrkrn5rajf60gfj0kvkgz5bylkdc-xdg-mime-database.drv /gnu/store/86df5c3j48wg59yrrcqya1rskmwbqjqb-gtk-im-modules.drv /gnu/store/9xjd6ax9hlmskhyagf46l28258azra0s-ca-certificate-bundle.drv /gnu/store/bb583drg33kg138fb25cb0zd7hhgxzw2-glib-schemas.drv /gnu/store/gw13b4ivyfzzvpdik3mgghx6n4ql8b6h-info-dir.drv /gnu/store/p2srmzy6b08x7gbg8nvmxzrr6ypsrqiq-gtk-icon-themes.drv /gnu/store/p3l0f5imh4021khfrnaqgk0xl5w5zmnh-fonts-dir.drv /gnu/store/wsryc95x85d0qdavgiw4fy1qglam6b84-manual-database.drv real 0m4.497s user 0m5.719s sys 0m0.151s $ guix describe Generacio 179 Mar 30 2021 11:00:56 (nuna) guix 9098745 repository URL: https://git.savannah.gnu.org/git/guix.git branch: master commit: 9098745b181b3022587a35afd255f7ff1d41ac86 --8<---------------cut here---------------end--------------->8--- That’s still too long. The graft performance problem is what’s discussed at <https://issues.guix.gnu.org/41702>. The ‘--no-grafts’ performance is not great either, and I wonder if it’s suboptimal behavior in the presence of many propagated inputs. > Something must be wrong, because I found a workaround that's fishy: if I > comment out some inputs from the guix.scm and build the environment, > then it works. Then I uncomment the commented inputs and this time the > environment builds in a few seconds. There was temporarily a performance regression regarding substitutes: https://issues.guix.gnu.org/47283 Given what you describe, this sounds like a likely culprit. Would be nice to see if after updating your daemon you still experience that kind of behavior. HTH, Ludo’.
