Missing $XBPS_MASTERDIR/tmp caused ca-certificates and glibc-locales to
fail in the reconfigure step of binary-bootstrap, since a call to mktemp
(which I couldn't locate in source though) assumed /tmp in the chroot
would be present already.
This issue was reproducible reliably for me on NixOS by doing something
like:
rm -rf masterdir
./xbps-src binary-bootstrap
The workaround I found was:
mkdir -p masterdir/tmp # or alternatively ./xbps-src clean
# which also (re-)creates masterdir/tmp
./xbps-src binary-bootstrap
This workaround is now mirrored in chroot_prepare by ensuring that tmp
always exists.