ihaskell: added package

pkgs/development/tools/haskell/ihaskell/wrapper.nix

@@ -0,0 +1,26 @@
+{ stdenv, makeWrapper, ihaskell, ipython, ghc }:
+
+stdenv.mkDerivation rec {
+
+  name = "ihaskell-" + ihaskell.version ;
+
+  buildInputs = [ makeWrapper ];
+
+  preferLocalBuild = true;
+
+  buildCommand = ''
+    makeWrapper "${ihaskell}/bin/IHaskell" "$out/bin/ihaskell" \
+      --prefix PATH : "${ghc}/bin:${ihaskell}/bin:${ipython}/bin" \
+      --prefix LD_LIBRARY_PATH : "${ihaskell}/lib/ghc-${ghc.version}/${name}/" \
+      --add-flags "--ipython=${ipython}/bin/ipython" \
+      --set PROFILE_DIR "\$HOME/.ipython/profile_haskell" \
+      --set PROFILE_TAR "$(find ${ihaskell} -iname "profile.tar")" \
+      --set PROFILE_INIT "\$([ ! -d \$PROFILE_DIR ] && mkdir -p \$PROFILE_DIR && tar xvf \$PROFILE_TAR -C \$PROFILE_DIR)" \
+      --prefix GHC_PACKAGE_PATH : "\$(${ghc.GHCGetPackages} ${ghc.version}|sed -e 's, -package-db ,:,g'|cut -b 2-):${ihaskell}/lib/ghc-${ghc.version}/package.conf.d/${name}.installedconf" \
+      --set GHC_PACKAGE_PATH "\$GHC_PACKAGE_PATH:" # always end with : to include base packages
+  '';
+
+  meta = {
+    description = ihaskell.meta.description;
+  };
+}