https://github.com/conda-forge/pytorch-cpu-feedstock/blob/master/recipe
https://github.com/conda-forge/vtk-feedstock/tree/master/recipe
https://github.com/conda-forge/mesalib-feedstock/blob/master/conda_build_config.yaml
https://github.com/conda-forge/h5py-feedstock/blob/master/recipe/conda_build_config.yaml
https://github.com/conda-forge/freecad-feedstock/blob/master/recipe/meta.yaml