To avoid surprises when libstdc++, clang, or other components
in the toolchain introduce regressions, we introduce a "future
toolchain". This builds on the Fedora version under active
development, and the development branches of gcc and llvm.
The future toolchain is not intended to be frozen. Rather,
periodically we will build the future toolchain, then build
ScyllaDB and run its unit tests under that toolchain, then
discard it. Any problems will then have be be tracked down
by a developer and either reported to the source repository,
or fixed in ScyllaDB.
Closesscylladb/scylladb#27964
4c9c3aae23