substituteStream(): WARNING: pattern '# define _LIBCPP_USE_AVAILABILITY_APPLE' doesn't match anything in file 'include/__config'
The new mechanism for those is a cmake option
LIBCXX_ENABLE_VENDOR_AVAILABILITY_ANNOTATIONS that is off by default:
https://reviews.llvm.org/D90843
The version will initially remain the same so that no additional changes
to the packaging are required (i.e. this commit only includes the
required changes to build from the mono repository instead of individual
tarballs).
The purpose of this package is to continuously improve the LLVM
packaging in Nixpkgs without causing a lot of rebuilds and provide more
recent LLVM builds for users. For more details see:
https://github.com/NixOS/nixpkgs/issues/114828
Shea Levy