substitute server not used

[Marco van Hulten <marco@hulten.org>]

Dear all,

Even though a substitute is available [1], one of my Guix system does
not want to use this:


[kodi@watson ~]$ guix package -u kodi
The following packages will be upgraded:
   kodi     (dependencies or package changed)
   kodi-cli (dependencies or package changed)

substitute: updating substitutes from 'https://ci.guix.gnu.org'...
100.0% substitute: updating substitutes from
'https://bordeaux.guix.gnu.org'... 100.0% The following derivation will
be built: /gnu/store/mhq3az363na1wnz1mnzy9nln3s5f40a4-kodi-19.5.drv

building /gnu/store/mhq3az363na1wnz1mnzy9nln3s5f40a4-kodi-19.5.drv...
- 'unpack' phase [...]


It is an "upgrade" because of "changed dependencies".  I *suppose* the
substitute is too old for the outputs to be bit identical?  (I hope I
use the right terminology here and this makes sense.)


# Background/rationale for trying to upgrade Kodi

After I had done a 'guix package -u . --do-not-upgrade=kodi', I still
needed to upgrade Kodi, because otherwise:


[kodi@watson ~]$ cat kodi.log.txt 
libEGL warning: MESA-LOADER: failed to open i915: /gnu/store/zisvdry6856i6z4iai62ff6l3anbdld8-mesa-23.0.3/lib/dri/i915_dri.so: cannot open shared object file: No such file or directory (search paths /gnu/store/zisvdry6856i6z4iai62ff6l3anbdld8-mesa-23.0.3/lib/dri, suffix _dri)

libva info: VA-API version 1.18.0
libva info: Trying to open /gnu/store/zisvdry6856i6z4iai62ff6l3anbdld8-mesa-23.0.3/lib/dri/iHD_drv_video.so
libva info: va_openDriver() returns -1
libGL error: MESA-LOADER: failed to open i915: /gnu/store/zisvdry6856i6z4iai62ff6l3anbdld8-mesa-23.0.3/lib/dri/i915_dri.so: cannot open shared object file: No such file or directory (search paths /gnu/store/zisvdry6856i6z4iai62ff6l3anbdld8-mesa-23.0.3/lib/dri, suffix _dri)
libGL error: failed to load driver: i915
libGL error: MESA-LOADER: failed to open i915: /gnu/store/zisvdry6856i6z4iai62ff6l3anbdld8-mesa-23.0.3/lib/dri/i915_dri.so: cannot open shared object file: No such file or directory (search paths /gnu/store/zisvdry6856i6z4iai62ff6l3anbdld8-mesa-23.0.3/lib/dri, suffix _dri)
libGL error: failed to load driver: i915
libva info: VA-API version 1.18.0
libva info: Trying to open /gnu/store/zisvdry6856i6z4iai62ff6l3anbdld8-mesa-23.0.3/lib/dri/iHD_drv_video.so
libva info: va_openDriver() returns -1
/home/kodi/.guix-profile/bin/kodi: line 186:  1634 Segmentation fault      ${KODI_BINARY} $SAVED_ARGS
Crash report available at /home/kodi/kodi_crashlog-20240214_200244.log


Best,
  Marco

[1]: https://ci.guix.gnu.org/build/3395475/details