Blender 17:2.82.a-3 требует libHalf-2_4.so.24
$ blender
blender: error while loading shared libraries: libHalf-2_4.so.24: cannot open shared object file: No such file or directory
# pacman -Fy libHalf-2_4.so.24
extra/openexr 2.4.1-2 [установлен: 2.5.0-1]
usr/lib/libHalf-2_4.so.24
Шикарно!
Точно также как и с nvidia-lts 1:440.82-12 и linux-lts 5.4.38-1