user/thunderbird (68.9.0): FTBFS: ERROR: The libclang located at None is too old (need at least 4.0).
Found on aarch64:
...
0:16.84 checking for alsa... yes
0:16.86 checking MOZ_ALSA_CFLAGS...
0:16.87 checking MOZ_ALSA_LIBS... -lasound
0:16.89 checking for libpulse... yes
0:16.89 checking MOZ_PULSEAUDIO_CFLAGS... -D_REENTRANT
0:16.90 checking MOZ_PULSEAUDIO_LIBS... -lpulse
0:16.90 checking for rustc... /usr/bin/rustc
0:16.90 checking for cargo... /usr/bin/cargo
0:17.27 checking rustc version... 1.60.0
0:17.29 checking cargo version... 1.60.0
0:17.58 checking for rust target triplet... aarch64-foxkit-linux-musl
0:17.78 checking for rust host triplet... aarch64-foxkit-linux-musl
0:17.78 checking for rustdoc... /usr/bin/rustdoc
0:17.80 checking for cbindgen... /usr/bin/cbindgen
0:17.80 checking for rustfmt... not found
0:17.81 checking for llvm-config... not found
0:17.81 checking that libclang is new enough...
0:17.81 ERROR: The libclang located at None is too old (need at least 4.0).
0:17.81 Please make sure to update it or point to a newer libclang using
0:17.81 --with-libclang-path.
0:17.91 *** Fix above errors and then restart with\
0:17.91 "./mach build"
0:17.91 make: *** [client.mk:115: configure] Error 1
>>> ERROR: thunderbird: build failed
Likely due to recent LLVM { 8 --> 14 } bump.