sources:
  glibc-b4e23c75aea756b4bddc4abcf27a1c6dca8b6bd3.tar.xz: 21fa90dd9ef35f8be7e8fa2e9c019ecd059a985a
  glibc-manpages.tar.bz2: ca54bfb832b703c8e35170fcc1c1f5470b45ff0f