So repo.msys2.org seems to be back. But while it was down I tried some stuff to auto update vcpkg, and it was not very easy to do using run-vcpkg action, so I ended rewriting windows workflow (see here). I also fixed linux failure.
run-vcpkg action doesn't seem to support automatic update for vcpkg without a trick (using git fetch and giving FETCH_HEAD to run-vcpkg).
It's also possible to force the vcpkg commit id to use, but that means we must change it whenever we want to upgrade vcpkg or one of the libs we need.
I would suggest we first ask the action-maintainer to add the ability to do this; we cannot be the only one who would like this :) As I make actions myself, I always truly appreciate others asking for their use-case .. it improves actions for all :)
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