Created attachment 545004 [details] Build Log Mozilla's new CSS Engine Stylo requires clang to be installed at build time, and the ebuild is missing this dependency
I think a revbump for this issue is unneccessary. For the very who had this problem here could not emerge thunderbird anyway. For everyone else, this means a superfluous rebuild.
I added the revbump because I didn't add one for https://bugs.gentoo.org/664180. There, the maintainer merging the Pull Request added one, and I figured I'd add one for this one as well.
Closing as per IRC discussion. Will be fixed when -61 comes around