$NetBSD: patch-libraries_Cabal_Cabal_src_Distribution_Simple_GHC.hs,v 1.2 2023/11/01 17:53:53 pho Exp $

Hunk #0, #1, #2:
  Revert the change introduced in https://github.com/haskell/cabal/issues/1660

  Do not use @rpath on Darwin, instead use the final destination path as a
  library install name. This is pkgsrc-specific.

  See also https://github.com/haskell/cabal/pull/7076
  And https://github.com/haskell/cabal/issues/7339

Hunk #2:
  Enable Cabal's rpath overriding functionality on all the platforms known
  to use ELF.

  When a Cabal package which defines both a library and an executable to be
  built, GHC by default embeds an rpath to the *build* directory into the
  executable. This may sound like a bug in GHC but is actually not, because
  GHC doesn't know the fact that the said library is going to be installed
  elsewhere. To overcome this issue, Cabal has a functionality to disable
  the default rpath handling of GHC and construct the correct set of
  rpaths... but only on certain platforms for some reason.

  Pull request: https://github.com/haskell/cabal/pull/7382

--- libraries/Cabal/Cabal/src/Distribution/Simple/GHC.hs.orig	2023-09-21 11:31:40.000000000 +0000
+++ libraries/Cabal/Cabal/src/Distribution/Simple/GHC.hs
@@ -836,7 +836,7 @@ buildOrReplLib mReplFlags verbosity numJ
                                mkStaticLibName (hostPlatform lbi) compiler_id uid
         ghciLibFilePath      = relLibTargetDir </> Internal.mkGHCiLibName uid
         ghciProfLibFilePath  = relLibTargetDir </> Internal.mkGHCiProfLibName uid
-        libInstallPath       = libdir $
+        libInstallPath       = dynlibdir $
                                absoluteComponentInstallDirs
                                pkg_descr lbi uid NoCopyDest
         sharedLibInstallPath = libInstallPath </>
@@ -900,7 +900,6 @@ buildOrReplLib mReplFlags verbosity numJ
                 -- at build time. This only applies to GHC < 7.8 - see the
                 -- discussion in #1660.
                 ghcOptDylibName          = if hostOS == OSX
-                                              && ghcVersion < mkVersion [7,8]
                                             then toFlag sharedLibInstallPath
                                             else mempty,
                 ghcOptHideAllPackages    = toFlag True,
@@ -1813,15 +1812,15 @@ getRPaths lbi clbi | supportRPaths hostO
     -- 'False', while those operating systems themselves do support RPATH.
     supportRPaths Linux       = True
     supportRPaths Windows     = False
-    supportRPaths OSX         = True
+    supportRPaths OSX         = False
     supportRPaths FreeBSD     =
       case compid of
         CompilerId GHC ver | ver >= mkVersion [7,10,2] -> True
         _                                              -> False
-    supportRPaths OpenBSD     = False
-    supportRPaths NetBSD      = False
-    supportRPaths DragonFly   = False
-    supportRPaths Solaris     = False
+    supportRPaths OpenBSD     = True
+    supportRPaths NetBSD      = True
+    supportRPaths DragonFly   = True
+    supportRPaths Solaris     = True
     supportRPaths AIX         = False
     supportRPaths HPUX        = False
     supportRPaths IRIX        = False