In the 3.26 timeframe, several GNOME modules are looking to adopt meson as build system.
Apart from the python3 dependency (which shouldn't be a problem, really), this means that these modules will no longer have traditional 'make dist' style tarballs, since that is not a feature meson has. Instead, we will look at providing git archive style tarballs, in order guarantee reproducability - git tags can be moved too easily.
For distributions, this means that your build instructions may need to change to use autogen.sh instead of configure.