musl stops processing options in getopt as soon as a non option is processed,
and this is the POSIX way. glibc needs to set this env var to behave in
POSIX mode as well.
Available implementations at common/chroot-style/*.sh. Each .sh
script there implements a chroot style to be able to chroot and bind
mount with multiple utilities. The current supported list:
- uunshare (uses xbps-uunshare(8))
- uchroot (uses xbps-uchroot(8))
- proot (uses proot, see http://proot.me)
The XBPS_CHROOT_CMD can be set in etc/conf to use a specific implementation,
and XBPS_CHROOT_CMD_ARGS to pass in additional arguments to the cmd.
