I've had an annoying @preserved-rebuild failure for a while now:
!!! existing preserved libs:
>>> package: dev-libs/mpfr-4.0.2
* - /usr/lib64/libmpfr.so.4
* - /usr/lib64/libmpfr.so.4.1.6
* used by /usr/lib64/libmpfi.so.0.0.0 (sci-libs/mpfi-1.5.1)
It's stuck with me since rebuilding sci-libs/mpfi fails:
$ sudo emerge @preserved-rebuild
error: unknown type name 'mpfi_srcptr'; did you mean 'mpfr_srcptr'?
I finally set out to troubleshoot this today, and... there's an easy fix. The unstable version sci-libs/mpfi-1.5.3 builds fine. So, I'm suggesting we stabilize it because it looks like the stabilization of dev-libs/mpfr-4.0.2 is what killed it:
Since the current stable version doesn't even build, I think it's safe enough to move forward with this...
amd64 stable. Closing.