[$] Arch Linux finally starts licensing PKGBUILDs

Arch Linux is popular as a base
for other Linux distributions; examples of Arch-derivatives include EndeavourOS, Manjaro, Parabola, and SteamOS.
There's one small problem: the control files used to describe how to build
packages for Arch Linux have no stated license. That creates a bit of
uncertainty about the rights and responsibilities for the downstream
derivatives. So far, that doesn't seem to have been a problem, nor has
it stopped other projects from assuming that reuse is
allowed. However, the Arch project is looking to add some clarity by
explicitly assigning a liberal license to its package
sources. Currently the project is in the process of reaching out to
contributors to see if they have any objections.