llvm6/llvm6-6.0.1-2-x86_64.pkg.tar.xz build reproducible in our test framework:
381ee11982877943945e22d0e538372d106a1ed0ebde14d2eda134ccd7b90e52 llvm6-6.0.1-2-x86_64.pkg.tar.xz
e9de8654aabb5d5633443660aaa932f14d33e7b67da97368c915516c1064ae69 llvm6-6.0.1-2-x86_64.pkg.tar.xz-b1.BUILDINFO.txt
e9de8654aabb5d5633443660aaa932f14d33e7b67da97368c915516c1064ae69 llvm6-6.0.1-2-x86_64.pkg.tar.xz-b2.BUILDINFO.txt