From e67bb36821d41eb7cbeedab2fd9ff7a04873ee59 Mon Sep 17 00:00:00 2001
From: Michael Raskin <7c6f434c@mail.ru>
Date: Fri, 9 Jan 2015 21:38:10 +0300
Subject: [PATCH] Work around buildEnv sometimes deciding to make bin a symlink

---
 pkgs/development/haskell-modules/with-packages-wrapper.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/development/haskell-modules/with-packages-wrapper.nix b/pkgs/development/haskell-modules/with-packages-wrapper.nix
index ad88703edd5c..dbe6871d38b8 100644
--- a/pkgs/development/haskell-modules/with-packages-wrapper.nix
+++ b/pkgs/development/haskell-modules/with-packages-wrapper.nix
@@ -40,6 +40,13 @@ stdenv.lib.addPassthru (buildEnv {
   postBuild = ''
     . ${makeWrapper}/nix-support/setup-hook
 
+    if test -L "$out/bin"; then
+      binTarget="$(readlink -f "$out/bin")"
+      rm "$out/bin"
+      cp -r "$binTarget" "$out/bin"
+      chmod u+w "$out/bin"
+    fi
+
     for prg in ghc ghci ghc-${ghc.version} ghci-${ghc.version}; do
       rm -f $out/bin/$prg
       makeWrapper ${ghc}/bin/$prg $out/bin/$prg         \