On Thu, 27 May 2021 11:54:36 -0400 Dan Ritter wrote: > libgtk-4-0 is currently in "experimental" which means that it is > both unstable and buggy. You can certainly install it and try it > out, but you shouldn't depend on it just yet. If it goes > smoothly, then it could be in the next stable release, in about > 2 years. > > https://packages.debian.org/experimental/libgtk-4-0
Probably better to use libgtk-4-1, which is based on an upstream-stable release: https://packages.debian.org/experimental/libgtk-4-1 The warnings about depending on experimental packages still apply.