* 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
stanchion: make pam nullify typesafe
stanchion: add Darwin support
stanchion: make pam OS-checked inside of stanchion.nix
stanchion: add Darwin support
stanchion: remove OS-checked pam on all-packages.nix
stanchion: add Darwin support