diff --git a/nix/sources.json b/nix/sources.json

index 7572541ab4eb682a84de43f08e473207f5ddeff3..d1fc73a51c4d4a421fd192556891ddb057314a7f 100644

--- a/nix/sources.json

+++ b/nix/sources.json

@@ -843,6 +843,20 @@ "type": "tarball",

     "url": "https://github.com/wladich/ozi_map/archive/4d6bd3f234960ba90d82e6d58da9c1bf4677eb16.tar.gz",

     "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"

 },

• "polyvectorization": {

•    "branch": "master",
  

•    "builtin": false,
  

•    "date": "2019-08-23T14:52:46Z",
  

•    "description": "Reference implementation of Vectorization of Line Drawings via PolyVector Fields",
  

•    "homepage": "https://github.com/bmpix/PolyVectorization",
  

•    "owner": "bmpix",
  

•    "repo": "PolyVectorization",
  

•    "rev": "bceb8e2a08cca29cef1df074eb1a1f6450cc163f",
  

•    "sha256": "0d8281q3rdxzrxr5y9bxjkq2s2sfl8fgkk9kqpmpp3z5hxg893jq",
  

•    "type": "tarball",
  

•    "url": "https://github.com/bmpix/PolyVectorization/archive/bceb8e2a08cca29cef1df074eb1a1f6450cc163f.tar.gz",
  

•    "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
  

• },

 "py-staticmaps": {

     "branch": "master",

     "builtin": false,

diff --git a/pkgs/default.nix b/pkgs/default.nix

index e043d5957eebe037739beb0ff55805748f2c544e..f49c7aa470d11474e7e6c9f55f30c59ff8952093 100644

--- a/pkgs/default.nix

+++ b/pkgs/default.nix

@@ -189,9 +189,12 @@ osm2mp = perlPackages.callPackage ./tools/geo/osm2mp {

   inherit sources;

   inherit (perlPackages) GeoOpenstreetmapParser MatchSimple MathPolygon MathPolygonTree TreeR;

 };

• py-staticmaps = callPackage ./tools/geo/py-staticmaps { };

 phyghtmap = callPackage ./tools/geo/phyghtmap { };

• polyvectorization = libsForQt5.callPackage ./tools/graphics/polyvectorization {

•  inherit sources;
  

• };

 ptunnel = callPackage ./tools/networking/ptunnel { };

• py-staticmaps = callPackage ./tools/geo/py-staticmaps { };

 saait = callPackage ./tools/misc/saait { };

 sendmap20 = callPackage ./tools/geo/sendmap20 { };

 stagit = callPackage ./tools/misc/stagit { };

diff --git a/pkgs/tools/graphics/polyvectorization/default.nix b/pkgs/tools/graphics/polyvectorization/default.nix

new file mode 100644

index 0000000000000000000000000000000000000000..820a1fdb663d9238b1b5b892c66d5962af96168c

--- /dev/null

+++ b/pkgs/tools/graphics/polyvectorization/default.nix

@@ -0,0 +1,30 @@

+{ lib, mkDerivation, cmake, boost165, eigen, opencv2, sources }:

+mkDerivation {

• pname = "polyvectorization";

• version = lib.substring 0 10 sources.polyvectorization.date;

• src = sources.polyvectorization;

• patches = [ ./with-gui.patch ];

• postPatch = ''

• substituteInPlace src/main.cpp \

•  --replace "#define WITH_GUI 1" "//#define WITH_GUI 1"
  

• '';

• nativeBuildInputs = [ cmake ];

• buildInputs = [ boost165 eigen opencv2 ];

• NIX_CFLAGS_COMPILE = "-fpermissive";

• installPhase = "install -Dm755 polyvector_thing -t $out/bin";

• meta = with lib; {

• inherit (sources.polyvectorization) description homepage;

• license = licenses.mit;

• maintainers = [ maintainers.sikmir ];

• platforms = platforms.unix;

• };

+}

\ No newline at end of file

diff --git a/pkgs/tools/graphics/polyvectorization/with-gui.patch b/pkgs/tools/graphics/polyvectorization/with-gui.patch

new file mode 100644

index 0000000000000000000000000000000000000000..2c795a6c6112c71d3d0061357d15d652c89c7c6c

--- /dev/null

+++ b/pkgs/tools/graphics/polyvectorization/with-gui.patch

@@ -0,0 +1,39 @@

+diff --git i/src/main.cpp w/src/main.cpp

+index 5ccdfa9..1d04516 100644

+--- i/src/main.cpp

++++ w/src/main.cpp

+@@ -1,6 +1,6 @@

• #include "stdafx.h"

• #define WITH_GUI 1

+-#ifdef _WIN32

++#if 1

• #include <QtCore/QCoreApplication>

• #include "mainwindow.h"

• #include

+@@ -263,7 +263,7 @@ std::string type2str(int type) {

• int main(int argc, char *argv[])

• {

+-#ifdef _WIN32

++#if 1

• QApplication a(argc, argv);

• #endif

• using namespace cv;

+@@ -292,7 +292,7 @@ int main(int argc, char *argv[])

• bwImg = Scalar(255) - bwImg;

• m = bwImg.rows; n = bwImg.cols; //m: height, n: width

+-#ifdef _WIN32

++#if 1

• QElapsedTimer timer;

• timer.start();

• #else

+@@ -548,7 +548,7 @@ int main(int argc, char *argv[])

• #ifdef WITH_GUI

• mw.setVectorization("Final", newVectorization);

• #endif

+-#ifdef _WIN32

++#if 1

• std::cout << "Total time: " << timer.elapsed()/1000 << " s" << std::endl;

• #endif

• svg::Image bgImg(filename, n, m, -0.5, 0, 0.6);