aspell: added new patch data-dirs-from-nix-profiles.patch

Aspell will search for dictionaries in all nix profiles even when used as library.
Setting data-dir or dict-dir in ASPELL_CONF will disable this behavior.

pkgs/development/libraries/aspell/default.nix

@@ -1,4 +1,5 @@
-{stdenv, fetchurl, perl}:
+{stdenv, fetchurl, perl
+, searchNixProfiles ? true}:
 
 stdenv.mkDerivation rec {
   name = "aspell-0.60.6.1";
@@ -10,6 +11,8 @@ stdenv.mkDerivation rec {
 
   patchPhase = ''
     patch interfaces/cc/aspell.h < ${./clang.patch}
+  '' + stdenv.lib.optionalString searchNixProfiles ''
+    patch -p1 < ${./data-dirs-from-nix-profiles.patch}
   '';
 
   buildInputs = [ perl ];
@@ -23,28 +26,6 @@ stdenv.mkDerivation rec {
     );
   '';
 
-  postInstall = ''
-    local prog="$out/bin/aspell"
-    local hidden="$out/bin/.aspell-wrapped"
-    mv "$prog" "$hidden"
-    cat > "$prog" <<END
-    #! $SHELL -e
-    if [ -z "\$ASPELL_CONF" ]; then
-      for p in \$NIX_PROFILES; do
-        if [ -d "\$p/lib/aspell" ]; then
-          ASPELL_CONF="data-dir \$p/lib/aspell"
-        fi
-      done
-      if [ -z "\$ASPELL_CONF" ] && [ -d "\$HOME/.nix-profile/lib/aspell" ]; then
-        ASPELL_CONF="data-dir \$HOME/.nix-profile/lib/aspell"
-      fi
-      export ASPELL_CONF
-    fi
-    exec "$hidden" "\$@"
-    END
-    chmod +x "$prog"
-  '';
-
   meta = {
     description = "Spell checker for many languages";
     homepage = http://aspell.net/;