openimageio: Use separate outputs

pkgs/applications/graphics/openimageio/default.nix

@@ -11,6 +11,8 @@ stdenv.mkDerivation rec {
     sha256 = "0cr0z81a41bg193dx9crcq1mns7mmzz7qys4lrbm18cmdbwkk88x";
   };
 
+  outputs = [ "bin" "out" "dev" "doc" ];
+
   buildInputs = [
     boost cmake ilmbase libjpeg libpng libtiff opencolorio openexr
     unzip
@@ -25,6 +27,11 @@ stdenv.mkDerivation rec {
       INSTALLDIR=$out dist_dir="
   '';
 
+  postInstall = ''
+    mkdir -p $bin
+    mv $out/bin $bin/
+  '';
+
   enableParallelBuilding = true;
 
   meta = with stdenv.lib; {