The biggest nixpkgs-specific change is addition of printf()-style
attribute annotations for many ncurses APIs. -Werror=format-security
now flags parameter inconsistencies and fails the build.
The fixes are usually one-liners like adding "%s" format string for
non-literals or just using `hardeningDisable [ "format" ];` for software
where backporting or fixing is not practical.
Drop -DNCURSES_INTERNALS=1 workaround required only for ncurses-6.2
and build-incompatible with ncurses-6.3.
* treewide: http -> https sources
This updates the source urls of all top-level packages from http to
https where possible.
* buildtorrent: fix url and tab -> spaces
As of right now, rogue.rogueforge.net has been down for at least several hours
(likely more).
We add two mirrors here which are likely to be more reliable. We keep the
original download location as a fallback, in case that estimate turns out to be
incorrect.
