Release or Release.gpg files may be absent if a new .deb file was uploaded
to apt repository recently. We may need to do a multiple attempts in a loop
to retry downloading of these files.
Needed after 99e9ab67b634a89d0be9eca12c4f1cdc091ee6e8, where I have disabled
looping in termux_download but curl doesn't do retries on 404 error. We
want immediate failure only for 404's on source and build tool URLs.
Variables
TERMUX_PKG_PLATFORM_INDEPENDENT
TERMUX_DEBUG
TERMUX_PKG_HAS_DEBUG
TERMUX_PKG_ESSENTIAL
TERMUX_SUBPKG_ESSENTIAL
TERMUX_PKG_NO_STATICSPLIT
TERMUX_PKG_BUILD_IN_SRC
TERMUX_PKG_FORCE_CMAKE
TERMUX_PKG_HOSTBUILD
should not accept arbitrary values for marking them "enabled". Instead
they should accept boolean values which makes them easier to handle and
also makes their meaning clear.
build-package.sh should make decision based on variable's value but not on
whether it is set or empty.
%ci:no-build
Partial compatibility for on-device builds.
There is no guarantee that it will be possible to build all available
packages and built packages will have same reliability that cross-compiled
but should solve "self-hosting" problems as much as possible.
