Building metapackages doesn't involve setup of compiler toolchain,
so certain variables are not set. In general, it was not expected
that package archive generation will use utilities that come with
cross-compiler as this functionality should rely on utilities
installed by host package manager.
/home/builder/termux-packages/scripts/build/termux_step_create_debian_package.sh: line 49: AR: unbound variable
Leonid Pliushch
Butta