UPDATE: I found this issue explaining the relicensing of rust game engine Bevy to MIT + Apache 2.0 dual. Tldr: A lot of rust projects are MIT/Apache 2.0 so using those licenses is good for interoperability and upstreaming. MIT is known and trusted and had great success in projects like Godot.
ORIGINAL POST:
RedoxOS, uutils, zoxide, eza, ripgrep, fd, iced, orbtk,…
It really stands out considering that in FOSS software the GPL or at least the LGPL for toolkits is the most popular license
Most of the programs I listed are replacements for stuff we have in the Linux ecosystem, which are all licensed under the (L)GPL:
uutils, zoxide, eza, ripgrep, fd -> GNU coreutils (GPL)
iced, orbtk -> GTK, QT (LGPL)
RedoxOS -> Linux kernel, most desktop environments like GNOME, KDE etc. all licensed GPL as much as possible
GPL is basically a contract that code will always be shared if distributed. This licence ensure any distributed library will give your code (legal standpoint).
MIT is more a use as you want licence. Devs can take the code, build and distribute binaries without restrictions.
They are not made for the same reasons. If you want to write Libre software, GPL is your friend.
As other says, rust build statically by default, having a MIT ecosystem help to spread the langage. Yet, this also mean someone can see its code used in a commercial product without sharing back, credits or counterpart.
Different uses.