sioyek: remove package

It has been available in nixpkgs a few weeks ago so we don't need it
here.

pkgs/default.nix

@@ -41,7 +41,6 @@ let
       text-engine = callPackage ./text-engine.nix { };
       tic-80 = callPackage ./tic-80 { };
       segno = libsForQt5.callPackage ./segno.nix { };
-      sioyek = libsForQt5.callPackage ./sioyek.nix { };
       vpaint = libsForQt5.callPackage ./vpaint.nix { };
       wayback = libsForQt5.callPackage ./wayback.nix { };
     };

pkgs/sioyek.nix

@@ -1,71 +0,0 @@
-{ stdenv, lib, fetchFromGitHub, qtbase, qt3d, qmake, wrapQtAppsHook, harfbuzz
-, pkgconfig, mupdf, zlib, freetype, libGLU, gumbo, jbig2dec, openjpeg_2 }:
-
-stdenv.mkDerivation rec {
-  pname = "sioyek";
-  version = "1.1.0";
-
-  src = fetchFromGitHub {
-    owner = "ahrm";
-    repo = pname;
-    rev = "v${version}";
-    sha256 = "sha256-d9Cm77SjjDnF1C/qT2J3ywUqedpDYnfzKq+ohirn2eM=";
-    fetchSubmodules = true;
-  };
-
-  nativeBuildInputs = [ qmake wrapQtAppsHook pkgconfig ];
-
-  buildInputs = [
-    qtbase
-    qt3d
-    harfbuzz
-
-    # Replacing the application's vendored dependencies with the system
-    # libraries.
-    mupdf
-    zlib
-
-    # Since we're using libraries from the system, we'll also have to
-    # link several libraries from the application manually.
-    gumbo
-    jbig2dec
-    openjpeg_2
-  ];
-
-  postPatch = ''
-    substituteInPlace pdf_viewer_build_config.pro \
-      --replace "-Lmupdf/build/release -lmupdf -lmupdf-third -lmupdf-threads" "-L${mupdf.dev}/lib -lmupdf -lmupdf-third -lharfbuzz -lfreetype -lgumbo -ljbig2dec -lopenjp2 -ljpeg" \
-      --replace 'INCLUDEPATH += ./pdf_viewer\' 'INCLUDEPATH += ./pdf_viewer ${mupdf.dev}/include ${zlib.dev}/include'
-
-    # Remove and replace it with packages from nixpkgs
-    sed -i -e '4,6d' pdf_viewer_build_config.pro
-  '' + lib.optionalString stdenv.isLinux ''
-    substituteInPlace pdf_viewer/main.cpp \
-      --replace "/usr/share/sioyek" "$out/share/sioyek" \
-      --replace "/etc/sioyek" "$out/etc/sioyek"
-  '';
-
-  qmakeFlags = lib.optional stdenv.isLinux "DEFINES+=LINUX_STANDARD_PATHS";
-
-  preBuild = ''
-    # Remove and replace it with packages from nixpkgs.
-    rm -r mupdf zlib
-  '';
-
-  # Taken from `build_linux.sh` script.
-  postInstall = ''
-    install -Dm644 tutorial.pdf -t $out/share/sioyek
-    install -Dm644 pdf_viewer/shaders/* -t $out/share/sioyek/shaders
-    install -Dm644 pdf_viewer/keys.config -t $out/etc/sioyek
-    install -Dm644 pdf_viewer/prefs.config -t $out/etc/sioyek
-    install -Dm644 pdf_viewer/keys_user.config -t $out/share/sioyek
-    install -Dm644 pdf_viewer/prefs_user.config -t $out/share/sioyek
-  '';
-
-  meta = with lib; {
-    description =
-      "PDF viewer designed for reading research papers and technical books";
-    homepage = "https://sioyek.info";
-    license = licenses.gpl3Only;
-  };
-}