qt515 compatibility for qpdfview 0.4.18

pkgs/applications/misc/qpdfview/default.nix

@@ -14,11 +14,12 @@ let
   buildInputs = [
     qtbase qtsvg poppler djvulibre libspectre cups file ghostscript
   ];
+  patches = [ ./qpdfview-qt515-compat.patch ];
 in
 mkDerivation {
   pname = s.baseName;
   inherit (s) version;
-  inherit nativeBuildInputs buildInputs;
+  inherit nativeBuildInputs buildInputs patches;
   src = fetchurl {
     inherit (s) url sha256;
   };

pkgs/applications/misc/qpdfview/qpdfview-qt515-compat.patch

@@ -0,0 +1,17 @@
+Fix compatibility with Qt 5.15.
+
+Patch copied from upstream source repository:
+
+https://bazaar.launchpad.net/~adamreichold/qpdfview/trunk/revision/2104
+
+--- a/sources/model.h	2017-04-19 21:01:25 +0000
++++ b/sources/model.h	2020-06-09 06:24:11 +0000
+@@ -24,6 +24,7 @@
+ #define DOCUMENTMODEL_H
+ 
+ #include <QList>
++#include <QPainterPath>
+ #include <QtPlugin>
+ #include <QWidget>
+ #include <QVector>
+

pkgs/top-level/all-packages.nix

@@ -25594,7 +25594,7 @@ in
 
   vimv = callPackage ../tools/misc/vimv/default.nix { };
 
-  qpdfview = libsForQt514.callPackage ../applications/misc/qpdfview {};
+  qpdfview = libsForQt5.callPackage ../applications/misc/qpdfview {};
 
   qtile = callPackage ../applications/window-managers/qtile {
     inherit (xorg) libxcb;