There are a few differences with the previous behavior:
make distwill include the
icons/*.svgfiles, which were apparently missing anyway
make install, if used in
PKGBUILD, will also include the
.css.mapfile. I left it because it was already in the
disttarball, but I don't see any use case for it in a release package.
Attached is a patch to use
make install in
PKGBUILD. Apologies if it's not the right place for such a patch, I'm not sure where I should send it. This patch should be applied after fixing the FTBFS issue listed in the Archlinux tracker #77221.