packages: ./hpath
          ./hpath-directory
          ./hpath-filepath
          ./hpath-io
          ./hpath-posix

package hpath-io
    ghc-options: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16

-- https://github.com/composewell/streamly/blob/master/docs/Build.md
package streamly
    ghc-options: -O2 -fspec-constr-recursive=16 -fmax-worker-args=16