module Foliage.UpdateCabalFile (rewritePackageVersion) where

import Distribution.Compat.Lens (set)
import Distribution.PackageDescription.PrettyPrint
import Distribution.Simple.PackageDescription
import Distribution.Types.Lens
import Distribution.Types.Version
import Distribution.Verbosity

rewritePackageVersion ::
  -- | path to @.cabal@ file
  FilePath ->
  -- | new version
  Version ->
  IO ()
rewritePackageVersion cabalPath ver = do
  gpd <- readGenericPackageDescription normal cabalPath
  writeGenericPackageDescription cabalPath (set (packageDescription . package . pkgVersion) ver gpd)