xpdf doesn't have icons on Darwin

[veprbl]

Issue description

Steps to reproduce

wget https://nixos.org/\~eelco/pubs/phd-thesis.pdf
nix-shell -p xpdf --run "xpdf phd-thesis.pdf"

Technical details

• system: "x86_64-darwin"
• host os: Darwin 16.7.0, macOS 10.12.6
• multi-user?: no
• sandbox: no
• version: nix-env (Nix) 1.11.15
• nixpkgs: /Users/user/nixpkgs

[veprbl]

I thought the problem might be due to imageformat plugin not being found, so I try:

diff --git a/pkgs/applications/misc/xpdf/default.nix b/pkgs/applications/misc/xpdf/default.nix
index 42622b62f61..db6c2860868 100644
--- a/pkgs/applications/misc/xpdf/default.nix
+++ b/pkgs/applications/misc/xpdf/default.nix
@@ -38,7 +38,7 @@ stdenv.mkDerivation {

   postInstall = stdenv.lib.optionalString stdenv.isDarwin ''
     wrapProgram $out/bin/xpdf \
-      --set QT_QPA_PLATFORM_PLUGIN_PATH ${qtbase.bin}/lib/qt-*/plugins/platforms
+      --set QT_PLUGIN_PATH ${qtbase.bin}/${qtbase.qtPluginPrefix}
   '';

   meta = {

Result:

There is some improvement, but still no icons.

# ls /nix/store/7gi0mjmi457f9l1rif10z5335vjffx60-qtbase-5.10.0-bin/lib/qt-5.10/plugins/imageformats/
libqgif.dylib  libqico.dylib  libqjpeg.dylib

This seems to be same as on Linux.

xpdf seems to use svg:

# ls xpdf-4.00/xpdf-qt
CMakeLists.txt	XpdfViewer.cc	    XpdfWidgetPrint.h  fitPage.svg     icons.qrc		indicator-icon-err4.svg  indicator-icon1.svg  indicator-icon6.svg   xpdf-icon.svg
QtPDFCore.cc	XpdfViewer.h	    back.svg	       fitPageOn.svg   indicator-icon-err0.svg	indicator-icon-err5.svg  indicator-icon2.svg  indicator-icon7.svg   xpdf.cc
QtPDFCore.h	XpdfWidget.cc	    findNext.svg       fitWidth.svg    indicator-icon-err1.svg	indicator-icon-err6.svg  indicator-icon3.svg  selectModeBlock.svg   xpdf.rc
XpdfApp.cc	XpdfWidget.h	    findPrevious.svg   fitWidthOn.svg  indicator-icon-err2.svg	indicator-icon-err7.svg  indicator-icon4.svg  selectModeLinear.svg  zoomIn.svg
XpdfApp.h	XpdfWidgetPrint.cc  findSettings.svg   forward.svg     indicator-icon-err3.svg	indicator-icon0.svg	 indicator-icon5.svg  xpdf-icon.ico	    zoomOut.svg