diff --git a/pkgs/tools/graphics/plotutils/default.nix b/pkgs/tools/graphics/plotutils/default.nix
index c6bde4c5b0c..219bfdf8c14 100644
--- a/pkgs/tools/graphics/plotutils/default.nix
+++ b/pkgs/tools/graphics/plotutils/default.nix
@@ -52,6 +52,6 @@ stdenv.mkDerivation rec {
 
     license = stdenv.lib.licenses.gpl2Plus;
     maintainers = [ stdenv.lib.maintainers.marcweber ];
-    platforms = stdenv.lib.platforms.gnu;
+    platforms = stdenv.lib.platforms.unix;
   };
 }
diff --git a/pkgs/tools/graphics/pstoedit/default.nix b/pkgs/tools/graphics/pstoedit/default.nix
index 93fc901aacf..170dfdac2b6 100644
--- a/pkgs/tools/graphics/pstoedit/default.nix
+++ b/pkgs/tools/graphics/pstoedit/default.nix
@@ -1,6 +1,6 @@
-{ stdenv, fetchurl, pkgconfig
+{ stdenv, fetchurl, pkgconfig, darwin, lib
 , zlib, ghostscript, imagemagick, plotutils, gd
-, libjpeg, libwebp
+, libjpeg, libwebp, libiconv
 }:
 
 stdenv.mkDerivation rec {
@@ -13,13 +13,16 @@ stdenv.mkDerivation rec {
 
   outputs = [ "out" "dev" ];
   nativeBuildInputs = [ pkgconfig ];
-  buildInputs = [ zlib ghostscript imagemagick plotutils gd libjpeg libwebp ];
+  buildInputs = [ zlib ghostscript imagemagick plotutils gd libjpeg libwebp ] 
+  ++ lib.optionals stdenv.isDarwin (with darwin.apple_sdk.frameworks; [
+    libiconv ApplicationServices
+  ]);
 
   meta = with stdenv.lib; {
     description = "Translates PostScript and PDF graphics into other vector formats";
     homepage = https://sourceforge.net/projects/pstoedit/;
     license = licenses.gpl2;
     maintainers = [ maintainers.marcweber ];
-    platforms = platforms.linux;
+    platforms = platforms.unix;
   };
 }