It seems you have done a great job for Mogan in this respect.
@jingkaimori has done a great job for Mogan on xmake support, especially on Windows.
As I understand GNU projects are required to use auto tools.
Autotools is too hard to use. The GNU guys should design a better build tool.
But we can also provide xmake projects of course! I do not care much about cmake, if you think that xmake is better and that we can import the workflows from Mogan to TeXmacs that would be great. We need a reliable way to build and test our sources automatically.
Create pull requests to https://github.com/xmake-io/xmake-repo/tree/master/packages to support GNU Guile 1.8 would be the first step.
xrepo provide a nice way to customize the personal repo. We do not need to wait the pull requests to be merged.