anchor.diff:      libunwind
       elfutils
       orc
  -    python3
       libuuid
  +    python3Packages.python
  +    python3Packages.pyqt5
     ];
  +
  +  pythonPath = with python3Packages; [ pyqt5 pygobject3 ];
  +
  +  propagatedBuildInputs = pythonPath;
   
     cmakeFlags = [
       "-DBUILD_ARAVIS=OFF" # For GigE support. Won't need it as our camera is usb.
  
positive.code:     "-DBUILD_TOOLS=ON"
      "-DBUILD_V4L2=ON"
      "-DBUILD_LIBUSB=ON"
      "-DTCAM_INSTALL_UDEV=${placeholder "out"}/lib/udev/rules.d"
      "-DTCAM_INSTALL_UVCDYNCTRL=${placeholder "out"}/share/uvcdynctrl/data/199e"
      "-DTCAM_INSTALL_GST_1_0=${placeholder "out"}/lib/gstreamer-1.0"
      "-DTCAM_INSTALL_GIR=${placeholder "out"}/share/gir-1.0"
      "-DTCAM_INSTALL_TYPELIB=${placeholder "out"}/lib/girepository-1.0"
      "-DTCAM_INSTALL_SYSTEMD=${placeholder "out"}/etc/systemd/system"
      # There are gobject introspection commands launched as part of the build. Those have a runtime
      # dependency on `libtcam` (which itself is built as part of this build). In order to allow
      # that, we set the dynamic linker's path to point on the build time location of the library.
      "-DCMAKE_SKIP_BUILD_RPATH=OFF"
    ];
  
    postPatch = ''
      substituteInPlace ./src/BackendLoader.cpp \
        --replace '"libtcam-v4l2.so"' "\"$out/lib/tcam-0/libtcam-v4l2.so\"" \
        --replace '"libtcam-aravis.so"' "\"$out/lib/tcam-0/libtcam-aravis.so\"" \
        --replace '"libtcam-libusb.so"' "\"$out/lib/tcam-0/libtcam-libusb.so\""
    '';
  
    meta = with lib; {
  
negative.code: , libunwind
  , elfutils
  , orc
  , python3Packages
  , libuuid
  , wrapGAppsHook
  }:
  
  stdenv.mkDerivation rec {
    pname = "tiscamera";
    version = "0.13.1";
  
    src = fetchFromGitHub {
      owner = "TheImagingSource";
      repo = pname;
      rev = "v-${pname}-${version}";
      sha256 = "0hpy9yhc4mn6w8gvzwif703smmcys0j2jqbz2xfghqxcyb0ykplj";
    };
  
    nativeBuildInputs = [
      cmake
      pkg-config
      python3Packages.wrapPython
      wrapGAppsHook
    ];
  
    buildInputs = [
  