diff --git a/pkgs/build-support/cabal/ghcjs.nix b/pkgs/build-support/cabal/ghcjs.nix
index f7fc515432e3..761123c9f459 100644
--- a/pkgs/build-support/cabal/ghcjs.nix
+++ b/pkgs/build-support/cabal/ghcjs.nix
@@ -188,7 +188,7 @@ in
                 done
               done
 
-              configureFlags+=" --package-db=${ghc.ghc}/share/ghcjs/x86_64-linux-0.1.0-7.8.2/ghcjs/package.conf.d"
+              configureFlags+=" --package-db=${ghc.ghc}${ghc.ghc.libdir}/ghcjs/package.conf.d"
 
               ${optionalString (self.enableSharedExecutables && self.stdenv.isLinux) ''
                 configureFlags+=" --ghc-option=-optl=-Wl,-rpath=$out/lib/${ghc.ghc.name}/${self.pname}-${self.version}";
diff --git a/pkgs/development/tools/haskell/ghcjs/default.nix b/pkgs/development/tools/haskell/ghcjs/default.nix
index 13fe5e61c2ea..19e368b84f83 100644
--- a/pkgs/development/tools/haskell/ghcjs/default.nix
+++ b/pkgs/development/tools/haskell/ghcjs/default.nix
@@ -8,7 +8,7 @@
 , regexPosix, alex, happy, git, gnumake, gcc, autoconf, patch
 , automake, libtool, cabalInstallGhcjs, gmp, base16Bytestring
 , cryptohash, executablePath, transformersCompat
-, haddock, hspec, xhtml, primitive, cacert
+, haddock, hspec, xhtml, primitive, cacert, pkgs, ghc
 }:
 cabal.mkDerivation (self: rec {
   pname = "ghcjs";
@@ -77,16 +77,17 @@ cabal.mkDerivation (self: rec {
     sed -i -e "s|str = \\[\\]|str = [\"--prefix=$out\", \"--libdir=$prefix/lib/$compiler\", \"--libsubdir=$pkgid\"]|" \
       src-bin/Boot.hs
   '';
+  libdir = "/share/ghcjs/${pkgs.stdenv.system}-${version}-${ghc.ghc.version}";
   postInstall = ''
     export HOME=$(pwd)
-    export GIT_SSL_CAINFO=${cacert}/etc/ca-bundle.crt
+    export GIT_SSL_CAINFO="${cacert}/etc/ca-bundle.crt"
     git clone git://github.com/ghcjs/ghcjs-boot.git
     cd ghcjs-boot
     git checkout f9f79d0cf40212943bcc1ad2672f2e0a7af2b7c9
     git submodule update --init --recursive
     ( cd boot ; chmod u+w . ; ln -s .. ghcjs-boot )
     chmod -R u+w .              # because fetchgit made it read-only
-    local GHCJS_LIBDIR=$out/share/ghcjs/x86_64-linux-0.1.0-7.8.2
+    local GHCJS_LIBDIR=$out${libdir}
     ensureDir $GHCJS_LIBDIR
     cp -R ${shims} $GHCJS_LIBDIR/shims
     ${cabalInstallGhcjs}/bin/cabal-js update
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index ef8174810a2e..dab33b3d1ab1 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -3008,7 +3008,7 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
   cabal2nix = callPackage ../development/tools/haskell/cabal2nix {};
 
   # Build a cabal package given a local .cabal file
-  buildLocalCabalWithArgs = { src, name, args ? {}, cabalDrvArgs ? { jailbreak = true; }, cabal2nix }: let
+  buildLocalCabalWithArgs = { src, name, args ? {}, cabalDrvArgs ? { jailbreak = true; }, cabal2nix ? self.cabal2nix }: let
     cabalExpr = pkgs.stdenv.mkDerivation ({
       name = "${name}.nix";