Working around Cabal install getting "setup: /usr/bin/ld: permission denied" on SmartOS

fix_haskell_unix_package.sh

#!/usr/bin/env bash
# assuming: pkgin -y install build-essential haskell-platform
git clone https://github.com/ghc/packages-unix.git
cd packages-unix/
git checkout -b smartos-fix-ghc-7.6.3 ghc-7.6.3-release
git apply ../patch-System-Posix-Files.hsc
autoreconf -i
cabal configure
cabal build
# this is an ugly hack
# I am preparing a patch for PKGSRC that solves this for the GHC 7.6.3 package directly
cabal install --force-reinstall

patch-System-Posix-Files.hsc

diff --git a/System/Posix/Files.hsc b/System/Posix/Files.hsc
index cb9663c..5f09b14 100644
--- a/System/Posix/Files.hsc
+++ b/System/Posix/Files.hsc
@@ -171,7 +171,7 @@ access name flags =
     if (r == 0)
        then return True
        else do err <- getErrno
-               if (err == eACCES)
+               if (err == eACCES || err == eROFS || err == eTXTBSY)
                   then return False
                   else throwErrnoPath "fileAccess" name