It seems that Signal is now an official community package on Arch. Would it be possible to ship it on Manjaro now too? I'm not sure how this works. I would prefer getting it directly from the Arch repos than from the Aur or through Discover.
From our friend @Foxboron on Reddit:
"Fun story actually! We where a bunch of people at 36C3. Kpcyrd had some wishes to distribute signal-desktop, but because of trademark there is some consent at play. We found moxie and chatted with him for a few minutes and he thought it shouldn't be a problem. Also managed to hand him 2 Arch stickers!"
I think this is where the package is: