wrapQtAppsHook: Remove ad hoc Qt wrappers

pkgs/development/compilers/nextpnr/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, cmake, makeWrapper
+{ stdenv, fetchFromGitHub, cmake
 , boost, python3, eigen
 , icestorm, trellis
 
@@ -6,7 +6,7 @@
 # laptop (and over a remote X server on my server...), so mark it broken for
 # now, with intent to fix later.
 , enableGui ? false
-, qtbase
+, qtbase, wrapQtAppsHook
 }:
 
 let
@@ -36,7 +36,9 @@ stdenv.mkDerivation rec {
     sha256 = "1y14jpa948cwk0i19bsfqh7yxsxkgskm4xym4z179sjcvcdvrn3a";
   };
 
-  nativeBuildInputs = [ cmake makeWrapper ];
+  nativeBuildInputs
+     = [ cmake ]
+    ++ (stdenv.lib.optional enableGui wrapQtAppsHook);
   buildInputs
      = [ boostPython python3 eigen ]
     ++ (stdenv.lib.optional enableGui qtbase);
@@ -56,13 +58,6 @@ stdenv.mkDerivation rec {
       --replace 'git log -1 --format=%h' 'echo ${substring 0 11 src.rev}'
   '';
 
-  postInstall = stdenv.lib.optionalString enableGui ''
-    for x in generic ice40 ecp5; do
-      wrapProgram $out/bin/nextpnr-$x \
-        --prefix QT_PLUGIN_PATH : "${qtbase}/${qtbase.qtPluginPrefix}"
-    done
-  '';
-
   meta = with stdenv.lib; {
     description = "Place and route tool for FPGAs";
     homepage    = https://github.com/yosyshq/nextpnr;