conda-build dependencies

[hmaarrfk]

• [ ] zstd: failed on https://app.shippable.com/github/Archiconda/zstd-feedstock/runs/1/1/console
  • Needs 1.3.3 https://app.shippable.com/github/Archiconda/zstd-feedstock/dashboard

    Error running link command: No such file or directory
    make[2]: *** [lib/CMakeFiles/libzstd_static.dir/build.make:460: lib/libzstd.a] Error 2
    make[1]: *** [CMakeFiles/Makefile2:128: lib/CMakeFiles/libzstd_static.dir/all] Error 2
    make[1]: *** Waiting for unfinished jobs....
    make: *** [Makefile:118: all] Error 2

probably just missing setting ${AR} correctly.

• [ ] libarchive
  • waiting for 1.3.3 https://app.shippable.com/github/Archiconda/libarchive-feedstock/dashboard
• [x] pyyaml needed cython, should get built. https://app.shippable.com/github/Archiconda/pyyaml-feedstock/dashboard