Description: Do not emit a warning if the .haddock file is missing

 As it is quite common on Debian installations to install the -dev package

 without the -doc package.

Author: Joachim Breitner <nomeata@debian.org>

Index: ghc-8.0.2/utils/ghc-pkg/Main.hs

===================================================================

--- ghc-8.0.2.orig/utils/ghc-pkg/Main.hs

+++ ghc-8.0.2/utils/ghc-pkg/Main.hs

@@ -1588,8 +1588,10 @@

   mapM_ (checkDir True  "dynamic-library-dirs") (libraryDynDirs pkg)

   mapM_ (checkDir True  "include-dirs") (includeDirs pkg)

   mapM_ (checkDir True  "framework-dirs") (frameworkDirs pkg)

-  mapM_ (checkFile   True "haddock-interfaces") (haddockInterfaces pkg)

-  mapM_ (checkDirURL True "haddock-html")       (haddockHTMLs pkg)

+  -- In Debian, it is quite normal that the package is installed without the

+  -- documentation. Do not print a warning there.

+  -- mapM_ (checkFile   True "haddock-interfaces") (haddockInterfaces pkg)

+  -- mapM_ (checkDirURL True "haddock-html")       (haddockHTMLs pkg)

   checkDuplicateModules pkg

   checkExposedModules db_stack pkg

   checkOtherModules pkg