flex/flex-2.6.4-5-x86_64.pkg.tar.zst build reproducible in our test framework:
96163b93ef0d100a22b6cb5476c2d8984d11a73b4b2328b96b7b554e9ccc6002 flex-2.6.4-5-x86_64.pkg.tar.zst
d5761eb4879b4c67cdf3f7ee621ace3a77bd40e85f92ece8d7e1a2757f3237db flex-2.6.4-5-x86_64.pkg.tar.zst-b1.BUILDINFO.txt
d5761eb4879b4c67cdf3f7ee621ace3a77bd40e85f92ece8d7e1a2757f3237db flex-2.6.4-5-x86_64.pkg.tar.zst-b2.BUILDINFO.txt