Set configuration options on a per-package basis. Options set by a given package only apply to that package, other packages are unaffected.
copied from cf-staging / r-pkgconfig
conda install conda-forge::r-pkgconfigconda install conda-forge/label/cf201901::r-pkgconfigconda install conda-forge/label/cf202003::r-pkgconfigconda install conda-forge/label/gcc7::r-pkgconfig