Description:
root 6.24.06-8 seems to have some issues with tbb:

4-arch-01: ~$ ldd /usr/bin/rootcling
linux-vdso.so.1 (0x00007ffc6c792000)
libRIO.so => /usr/lib/root/libRIO.so (0x00007f1fbebdb000)
libCling.so => /usr/lib/root/libCling.so (0x00007f1fbab34000)
libCore.so => /usr/lib/root/libCore.so (0x00007f1fba6af000)
libc.so.6 => /usr/lib/libc.so.6 (0x00007f1fba4e3000)
libdl.so.2 => /usr/lib/libdl.so.2 (0x00007f1fba4dc000)
libThread.so => /usr/lib/root/libThread.so (0x00007f1fba473000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0x00007f1fba25b000)
libm.so.6 => /usr/lib/libm.so.6 (0x00007f1fba117000)
libgcc_s.so.1 => /usr/lib/libgcc_s.so.1 (0x00007f1fba0fc000)
libpthread.so.0 => /usr/lib/libpthread.so.0 (0x00007f1fba0db000)
/lib64/ld-linux-x86-64.so.2 => /usr/lib64/ld-linux-x86-64.so.2 (0x00007f1fbefec000)
libz.so.1 => /usr/lib/libz.so.1 (0x00007f1fba0c1000)
libncursesw.so.6 => /usr/lib/libncursesw.so.6 (0x00007f1fba04e000)
libpcre.so.1 => /usr/lib/libpcre.so.1 (0x00007f1fb9fd5000)
liblzma.so.5 => /usr/lib/liblzma.so.5 (0x00007f1fb9fac000)
libxxhash.so.0 => /usr/lib/libxxhash.so.0 (0x00007f1fb9fa0000)
liblz4.so.1 => /usr/lib/liblz4.so.1 (0x00007f1fb9f7d000)
libzstd.so.1 => /usr/lib/libzstd.so.1 (0x00007f1fb9e6e000)
libtbb.so.12 => not found

Note the last line. The arch package for intel-tbb provides libtbb.so.2 which is incompatible (tried using that via symlink). This results in build failures in depending packages.