From 5f10ab637753a9602d720a666f286c2f1cf6e5a5 Mon Sep 17 00:00:00 2001
From: Averell Dalton <averell+nixpkgs@rxd4.com>
Date: Thu, 15 Aug 2019 11:04:25 +0200
Subject: [PATCH] rstudio: fix build

---
 pkgs/applications/editors/rstudio/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/applications/editors/rstudio/default.nix b/pkgs/applications/editors/rstudio/default.nix
index 27c956dcd14..f90e17a6065 100644
--- a/pkgs/applications/editors/rstudio/default.nix
+++ b/pkgs/applications/editors/rstudio/default.nix
@@ -46,7 +46,7 @@ stdenv.mkDerivation rec {
     sha256 = "19x000m3jwnkqgi6ic81lkzyjvvxcfacw2j0vcfcaknvvagzhyhb";
   };
 
-  hunspellDictionaries = with stdenv.lib; filter isDerivation (attrValues hunspellDicts);
+  hunspellDictionaries = with stdenv.lib; filter isDerivation (unique (attrValues hunspellDicts));
 
   mathJaxSrc = fetchurl {
     url = https://s3.amazonaws.com/rstudio-buildtools/mathjax-26.zip;