diff --git a/pkgs/development/libraries/ncurses/default.nix b/pkgs/development/libraries/ncurses/default.nix
index edd26360596..83864751409 100644
--- a/pkgs/development/libraries/ncurses/default.nix
+++ b/pkgs/development/libraries/ncurses/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenv, fetchurl
+{ lib, stdenv, fetchurl, pkgconfig
 
 , mouseSupport ? false
 , unicode ? true
@@ -6,19 +6,18 @@
 , gpm
 
 # Extra Options
-, abiVersion ? "5"
+, abiVersion ? "6"
 }:
 
 stdenv.mkDerivation rec {
-  name = "ncurses-5.9";
+  name = "ncurses-6.0";
 
   src = fetchurl {
     url = "mirror://gnu/ncurses/${name}.tar.gz";
-    sha256 = "0fsn7xis81za62afan0vvm38bvgzg5wfmv1m86flqcj0nj7jjilh";
+    sha256 = "0q3jck7lna77z5r42f13c4xglc7azd19pxfrjrpgp2yf615w4lgm";
   };
 
-  # gcc-5.patch should be removed after 5.9
-  patches = [ ./clang.patch ./gcc-5.patch ];
+  patches = [ ./clang.patch ];
 
   outputs = [ "dev" "out" "man" ];
   setOutputFlags = false; # some aren't supported
@@ -33,6 +32,7 @@ stdenv.mkDerivation rec {
   # Only the C compiler, and explicitly not C++ compiler needs this flag on solaris:
   CFLAGS = lib.optionalString stdenv.isSunOS "-D_XOPEN_SOURCE_EXTENDED";
 
+  nativeBuildInputs = [ pkgconfig ];
   buildInputs = lib.optional (mouseSupport && stdenv.isLinux) gpm;
 
   preConfigure = ''
diff --git a/pkgs/development/libraries/ncurses/gcc-5.patch b/pkgs/development/libraries/ncurses/gcc-5.patch
deleted file mode 100644
index 2448229b88e..00000000000
--- a/pkgs/development/libraries/ncurses/gcc-5.patch
+++ /dev/null
@@ -1,46 +0,0 @@
-https://bugs.gentoo.org/545114
-
-extracted from the upstream change (which had many unrelated commits in one)
-
-From 97bb4678dc03e753290b39bbff30ba2825df9517 Mon Sep 17 00:00:00 2001
-From: "Thomas E. Dickey" <dickey@invisible-island.net>
-Date: Sun, 7 Dec 2014 03:10:09 +0000
-Subject: [PATCH] ncurses 5.9 - patch 20141206
-
-+ modify MKlib_gen.sh to work around change in development version of
-  gcc introduced here:
-	  https://gcc.gnu.org/ml/gcc-patches/2014-06/msg02185.html
-	  https://gcc.gnu.org/ml/gcc-patches/2014-07/msg00236.html
-  (reports by Marcus Shawcroft, Maohui Lei).
-
-diff --git a/ncurses/base/MKlib_gen.sh b/ncurses/base/MKlib_gen.sh
-index d8cc3c9..b91398c 100755
---- a/ncurses/base/MKlib_gen.sh
-+++ b/ncurses/base/MKlib_gen.sh
-@@ -474,11 +474,22 @@ sed -n -f $ED1 \
- 	-e 's/gen_$//' \
- 	-e 's/  / /g' >>$TMP
- 
-+cat >$ED1 <<EOF
-+s/  / /g
-+s/^ //
-+s/ $//
-+s/P_NCURSES_BOOL/NCURSES_BOOL/g
-+EOF
-+
-+# A patch discussed here:
-+#	https://gcc.gnu.org/ml/gcc-patches/2014-06/msg02185.html
-+# introduces spurious #line markers.  Work around that by ignoring the system's
-+# attempt to define "bool" and using our own symbol here.
-+sed -e 's/bool/P_NCURSES_BOOL/g' $TMP > $ED2
-+cat $ED2 >$TMP
-+
- $preprocessor $TMP 2>/dev/null \
--| sed \
--	-e 's/  / /g' \
--	-e 's/^ //' \
--	-e 's/_Bool/NCURSES_BOOL/g' \
-+| sed -f $ED1 \
- | $AWK -f $AW2 \
- | sed -f $ED3 \
- | sed \