Hi Ludo, On Sun, 28 Jun 2020 at 22:29, Ludovic Courtès <l...@gnu.org> wrote:
> Most likely the problem with non-reproducible .go files is that the fix > for <https://bugs.gnu.org/20272> was incomplete. In particular, I think > that gensyms are not reproducible when building things in parallel, > because the gensym depends on what’s loaded vs. interpreted. Thank you for the pointer. How can I test the "hypothesis" of "building things in parallel"? --8<---------------cut here---------------start------------->8--- guix describe -f channels > /tmp/chan.scm guix pull -C /tmp/chan.scm --cores=1 -p /tmp/repull1 guix build --check --no-grafts --cores=1 \ $(guix gc --derivers \ $(readlink -f /tmp/repull1/lib/guix/package.cache)) The following profile hook will be built: /gnu/store/qbrgxbnx0hi13xm36a6a0zijzc1rcz22-guix-package-cache.drv building package cache... (repl-version 0 1 1) Generating package cache for '/gnu/store/bgqy3mfpzbpyz3pysqxzkpch39q98yv3-profile'... (values (value "/gnu/store/15nnwjqrmh5w9hqy9yp4ycxsyfbsr0wi-guix-package-cache/lib/guix/package.cache")) guix build: error: derivation `/gnu/store/qbrgxbnx0hi13xm36a6a0zijzc1rcz22-guix-package-cache.drv' may not be deterministic: output `/gnu/store/15nnwjqrmh5w9hqy9yp4ycxsyfbsr0wi-guix-package-cache' differs --8<---------------cut here---------------end--------------->8--- BTW, I do not understand why the derivations have different hashes, containing derivations with different hashes and more importantly, why it is not the same order. --8<---------------cut here---------------start------------->8--- guix gc --derivers $(readlink -f ~/.config/guix/current/lib/guix/package.cache) /gnu/store/0pmc85ni7zsd5jrflb0prrj7bhvn1m1y-guix-package-cache.drv cat $(guix gc --derivers $(readlink -f ~/.config/guix/current/lib/guix/package.cache)) Derive ([("out","/gnu/store/pfpbh4v1m2dgn9dwiz6rsbqgx8lmd3ms-guix-package-cache","","")] ,[("/gnu/store/3pkfaqkdkaqy8khsfbsl0si3r9mydygl-profile.drv",["out"]) ,("/gnu/store/nih4g42d2da8p2b5dmxqb081bbpv9ax4-inferior-script.scm.drv",["out"]) ,("/gnu/store/x32cnfkd50fnxs10xp1jdn24h7ai2gxr-guile-3.0.2.drv",["out"])] ,["/gnu/store/50h7d8cx9k28gdbdzc9y615d1564m8ia-guix-package-cache-builder"] ,"x86_64-linux","/gnu/store/0m0vd873jp61lcm4xa3ljdgx381qa782-guile-3.0.2/bin/guile",["--no-auto-compile","/gnu/store/50h7d8cx9k28gdbdzc9y615d1564m8ia-guix-package-cache-builder"] ,[("guix properties","((type . profile-hook) (hook . package-cache))") ,("out","/gnu/store/pfpbh4v1m2dgn9dwiz6rsbqgx8lmd3ms-guix-package-cache") ,("preferLocalBuild","1")]) --8<---------------cut here---------------end--------------->8--- --8<---------------cut here---------------start------------->8--- guix gc --derivers $(readlink -f /tmp/repull1/lib/guix/package.cache) /gnu/store/qbrgxbnx0hi13xm36a6a0zijzc1rcz22-guix-package-cache.drv cat $(guix gc --derivers $(readlink -f /tmp/repull1/lib/guix/package.cache)) Derive ([("out","/gnu/store/15nnwjqrmh5w9hqy9yp4ycxsyfbsr0wi-guix-package-cache","","")] ,[("/gnu/store/b4dcaccqli2zdfalrn0lc0cz94gd80sk-inferior-script.scm.drv",["out"]) ,("/gnu/store/hm03mwl234lw43ivx33nsap0j4pjwqjp-profile.drv",["out"]) ,("/gnu/store/x32cnfkd50fnxs10xp1jdn24h7ai2gxr-guile-3.0.2.drv",["out"])] ,["/gnu/store/251jkjnw9zza2zwr1k45x1049d1axl5q-guix-package-cache-builder"] ,"x86_64-linux","/gnu/store/0m0vd873jp61lcm4xa3ljdgx381qa782-guile-3.0.2/bin/guile",["--no-auto-compile","/gnu/store/251jkjnw9zza2zwr1k45x1049d1axl5q-guix-package-cache-builder"] ,[("guix properties","((type . profile-hook) (hook . package-cache))") ,("out","/gnu/store/15nnwjqrmh5w9hqy9yp4ycxsyfbsr0wi-guix-package-cache") ,("preferLocalBuild","1")]) --8<---------------cut here---------------end--------------->8--- And I am confused because if I repull again with '--cores=2', then, --8<---------------cut here---------------start------------->8--- /tmp/repull1/bin/guix pull -C /tmp/chan.scm --cores=2 -p /tmp/repull2 md5sum \ $(readlink -f /tmp/repull2/lib/guix/package.cache) \ $(readlink -f /tmp/repull2/lib/guix/package.cache) 75f6feb9f52c312cc9cc8f73534926ba /gnu/store/15nnwjqrmh5w9hqy9yp4ycxsyfbsr0wi-guix-package-cache/lib/guix/package.cache 75f6feb9f52c312cc9cc8f73534926ba /gnu/store/15nnwjqrmh5w9hqy9yp4ycxsyfbsr0wi-guix-package-cache/lib/guix/package.cache --8<---------------cut here---------------end--------------->8--- But '--check' fails in all cases. What do I miss? All the best, simon
