Comment # 4 on bug 1172846 from Bernhard Wiedemann

dustrac is among the fastest to build. watchman is even a bit faster.

I also discovered strawberry (slower to build: around 500s) that becomes
reproducible when I disable lto 
but also becomes reproducible when I replace /dev/*random with /dev/zero
via
osc build -x reproducible-faketools-random --vm-type=kvm