$ ./xbps-src -m masterdir-x86_64-musl/ -f pkg libXaw;

$ .xbps-src -m masterdir-x86_64-musl -f pkg libXaw;

$ ./xbps-src -m masterdir-x86_64-musl/ -f pkg libXaw
[*] Updating `http://repo.voidlinux.eu/current/x86_64-musl-repodata' ...
ERROR: [reposync] failed to fetch file `http://repo.voidlinux.eu/current/x86_64-musl-repodata': Not Found
ERROR: [reposync] failed to fetch file `http://repo.voidlinux.eu/current/nonfree/x86_64-musl-repodata': Not Found
[*] Updating `http://repo.voidlinux.eu/current/nonfree/x86_64-musl-repodata' ...
=> libXaw-1.0.12_2: required dependencies:
   [host] pkg-config>=0: found 'pkg-config-0.28_3'.
   [target] libXext-devel>=0: found 'libXext-devel-1.3.3_1'.
   [target] libXt-devel>=0: found 'libXt-devel-1.1.4_3'.
   [target] libXmu-devel>=0: found 'libXmu-devel-1.1.2_2'.
   [target] libXpm-devel>=0: found 'libXpm-devel-3.5.11_2'.
=> libXaw-1.0.12_2: running do-fetch hook: 00-distfiles ...
=> libXaw-1.0.12_2: verifying checksum for distfile 'libXaw-1.0.12.tar.bz2'... OK.
=> libXaw-1.0.12_2: running pre-pkg hook: 04-generate-runtime-deps ...
   SONAME: libXext.so.6 <-> libXext>=1.0.5_1
   SONAME: libXmu.so.6 <-> libXmu>=1.0.4_1
   SONAME: libXt.so.6 <-> libXt>=1.0.5_1
   SONAME: libXpm.so.4 <-> libXpm>=3.5.7_1
   SONAME: libX11.so.6 <-> libX11>=1.2_1
   SONAME: libc.so <-> musl>=0.9.9_1
=> libXaw-1.0.12_2: running pre-pkg hook: 05-prepare-32bit ...
=> libXaw-1.0.12_2: running pre-pkg hook: 06-shlib-provides ...
   SONAME libXaw.so.7 from /usr/lib/libXaw7.so.7.0.0
   SONAME libXaw.so.6 from /usr/lib/libXaw6.so.6.0.1
=> libXaw-1.0.12_2: running pre-pkg hook: 99-pkglint ...
=> ERROR: libXaw-1.0.12_2: SONAME bump detected: libXaw.so.7 -> libXaw.so.6
=> ERROR: libXaw-1.0.12_2: please update common/shlibs with this line: "libXaw.so.6 libXaw-1.0.12_2"
=> ERROR: libXaw-1.0.12_2: all reverse dependencies should also be revbumped to be rebuilt against libXaw.so.6:
=> ERROR: libXaw-1.0.12_2: cannot continue with installation!
=> ERROR: libXaw-1.0.12_2: failed to run pre-pkg_99-pkglint() at line 30.