fftw/fftw-3.3.10-6-x86_64.pkg.tar.zst build reproducible in our test framework:
7de758a49ad18905760a55cdb4b68521a0c0daa839df495dfac25ecb5b9dc63f fftw-3.3.10-6-x86_64.pkg.tar.zst
5977ed70a2a8e3ce69882bdd56db4b66f3a086e289c38b7046dc6cbfe99f2180 fftw-3.3.10-6-x86_64.pkg.tar.zst-b1.BUILDINFO.txt
5977ed70a2a8e3ce69882bdd56db4b66f3a086e289c38b7046dc6cbfe99f2180 fftw-3.3.10-6-x86_64.pkg.tar.zst-b2.BUILDINFO.txt