[bug#59453] Mesa vulkan layer path fix for core-updates

[Kaelyn]

Hi,

Some time back I mailed in https://issues.guix.gnu.org/59453 to fix an issue 
with the manifests for the vulkan layers that ship with mesa. Basically the 
error is that the manifests don't include the store path to the referenced 
libraries, only the file name. An example the error can be seen by running 
"vulkaninfo &| less", where this message is printed a few times:

ERROR: [Loader Message] Code 0 : libVkLayer_MESA_device_select.so: cannot open 
shared object file: No such file or directory


While I know it is late in the process of preparing core-updates for merging 
into master, I wanted to ask if it would be possible to have the patch 
addressed prior to the merge? I just encountered the error message again after 
having a need to check vulkaninfo and it reminded me of the patch. (The 
vulkan-validationlayers package that was recently merged to master from staging 
includes a similar phase for fixing the layer object path in its layer 
manifest.)

Thanks,
Kaelyn