Hi Ludo, Thank you for the pedestrian report; I have learnt new stuff! :-)
On Thu, 11 Jul 2024 at 17:33, Ludovic Courtès <[email protected]> wrote: > Presumably whether ‘builtin:git-download’ is used changes the DAG > traversal order, which could explain this discrepancy. > > It does mean that all the users running an old guix-daemon find > themselves having no substitutes for ‘guix pull’. Ouch. Is it not only for grafts? Well, in addition, some input derivations are not the same: --8<---------------cut here---------------start------------->8--- 2 candidates: ./fy39r2y8dg2ycdzvnbqyfd1kpandnpxb-avahi-0.8.drv:3: ,[("/gnu/store/0q4nrqmh6ymhs4hmg9vmxa8zqx1y3d2z-dbus-1.14.0.drv",["out"]) ./fy39r2y8dg2ycdzvnbqyfd1kpandnpxb-avahi-0.8.drv:18: ,("/gnu/store/fflyi1qg7j9kz0b062p6xf0904rc8xkm-dbus-1.14.0.drv",["out"]) --8<---------------cut here---------------end--------------->8--- compared to: --8<---------------cut here---------------start------------->8--- 2 candidates: ./vhj8f01bwddshnc75ar5z62ndcij4pgy-avahi-0.8.drv:9: ,("/gnu/store/6p17vdziv9vcp8l4c8v0xqj855gf257g-dbus-1.14.0.drv",["out"]) ./vhj8f01bwddshnc75ar5z62ndcij4pgy-avahi-0.8.drv:17: ,("/gnu/store/j6g0pchbj39pbg9b9bh7wafsd8kysvv3-dbus-1.14.0.drv",["out"]) --8<---------------cut here---------------end--------------->8--- Although the two derivations: /gnu/store/0q4nrqmh6ymhs4hmg9vmxa8zqx1y3d2z-dbus-1.14.0.drv /gnu/store/6p17vdziv9vcp8l4c8v0xqj855gf257g-dbus-1.14.0.drv builds: /gnu/store/hjc4rdifbl890j03xy2gsa7y2sqcg0mi-dbus-1.14.0. And similarly for the two others ’dbus’ derivations; they build the same outputs. Please also note that the two derivations do not have the same order for the builder part: --8<---------------cut here---------------start------------->8--- ,["/gnu/store/32kpijl743qn7v337i19dd1hph1rd6x7-avahi-0.8-builder","/gnu/store/a6acf6dds8s9fw7dp5div03rwik0x4x2-module-import"] ,["/gnu/store/a6acf6dds8s9fw7dp5div03rwik0x4x2-module-import","/gnu/store/z1kanbslzb2lrr1hj922a50zkxl9jz28-avahi-0.8-builder"] --8<---------------cut here---------------end--------------->8--- And the two builder scripts are not the same because the item "/gnu/store/36my0g0j72b3vbz0gj1l8f0lmmgfkv3w-glib-2.72.3" is line 26 for one and line 30 for the other. Cheers, simon
