I hope this is a good place to get some help with two problems I encountered after I installed the MUSL version of Void Linux from the live image to my hard drive.  This is where I obtained the ISO:

  https://a-hel-fi.m.voidlinux.org/live/current/void-live-x86_64-musl-20181111-xfce.iso

1. During an update

  xbps-install -S
  xbps-install -u # updates xbps first
  xbps-install -u # attempts to update
  
it fails with

  intel-ucode-20180807_3 missing from repo

I did

     xbps-pkgdb -m hold intel-ucode

and the long update continued.

2. Firefox fails to start because libvpx.so.5 is missing.  the command

  xbps-query -f libvpx5

lists

  libvpx.so.5 -> libvpx.so.5.0.0
  libvpx.so.5.0 -> libvpx.so.5.0.0

but ls -l does not list any links for libvpx.so.5 and libvpx.so.5.0;  the libvpx.so.6 has correct symbolic links.  it should have been easily fixed

  ln -s /usr/lib/libvpx.so.5.0.0 /usr/lib/libvpx.so.5.0
  ln -s /usr/lib/libvpx.so.5.0.0 /usr/lib/libvpx.so.5

but Firefox still can't start as it thinks libvpx.so.5 is missing.  What am I missing here?

I installed the non-MUSL version, and it did not produce either of these issues.

thanks, jack