diff --git a/pkgs/development/libraries/smesh/default.nix b/pkgs/development/libraries/smesh/default.nix
new file mode 100644
index 00000000000..529f910c35a
--- /dev/null
+++ b/pkgs/development/libraries/smesh/default.nix
@@ -0,0 +1,24 @@
+{ stdenv, fetchFromGitHub, cmake, ninja, opencascade }:
+
+stdenv.mkDerivation rec {
+  pname = "smesh";
+  version = "6.7.6";
+
+  src = fetchFromGitHub {
+    owner = "tpaviot";
+    repo = "smesh";
+    rev = version;
+    sha256 = "1b07j3bw3lnxk8dk3x1kkl2mbsmfwi98si84054038lflaaijzi0";
+  };
+
+  nativeBuildInputs = [ cmake ninja ];
+  buildInputs = [ opencascade ];
+
+  meta = with stdenv.lib; {
+    description = "Extension to OCE providing advanced meshing features";
+    homepage = "https://github.com/tpaviot/smesh";
+    license = licenses.lgpl21;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ gebner ];
+  };
+}
diff --git a/pkgs/development/python-modules/pythonocc-core/default.nix b/pkgs/development/python-modules/pythonocc-core/default.nix
new file mode 100644
index 00000000000..b3a9cfe82ee
--- /dev/null
+++ b/pkgs/development/python-modules/pythonocc-core/default.nix
@@ -0,0 +1,37 @@
+{ stdenv, python, fetchFromGitHub, cmake, swig, ninja,
+  opencascade, smesh, freetype, libGL, libGLU, libX11 }:
+
+stdenv.mkDerivation rec {
+  pname = "pythonocc-core";
+  version = "0.18.1";
+
+  src = fetchFromGitHub {
+    owner = "tpaviot";
+    repo = "pythonocc-core";
+    rev = version;
+    sha256 = "1jk4y7f75z9lyawffpfkr50qw5452xzi1imcdlw9pdvf4i0y86k3";
+  };
+
+  nativeBuildInputs = [ cmake swig ninja ];
+  buildInputs = [
+    python opencascade smesh
+    freetype libGL libGLU libX11
+  ];
+
+  cmakeFlags = [
+    "-Wno-dev"
+    "-DPYTHONOCC_INSTALL_DIRECTORY=${placeholder "out"}/${python.sitePackages}/OCC"
+
+    "-DSMESH_INCLUDE_PATH=${smesh}/include/smesh"
+    "-DSMESH_LIB_PATH=${smesh}/lib"
+    "-DPYTHONOCC_WRAP_SMESH=TRUE"
+  ];
+
+  meta = with stdenv.lib; {
+    description = "Python wrapper for the OpenCASCADE 3D modeling kernel";
+    homepage = "https://github.com/tpaviot/pythonocc-core";
+    license = licenses.lgpl3;
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ gebner ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 904fc2a01a7..e4517eebcfa 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5745,6 +5745,8 @@ in
 
   smenu = callPackage ../tools/misc/smenu { };
 
+  smesh = callPackage ../development/libraries/smesh {};
+
   smugline = python3Packages.smugline;
 
   snabb = callPackage ../tools/networking/snabb { } ;
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 6e7a41f9468..d0ce2175cee 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -782,6 +782,10 @@ in {
 
   python-mnist = callPackage ../development/python-modules/python-mnist { };
 
+  pythonocc-core = toPythonModule (callPackage ../development/python-modules/pythonocc-core {
+    inherit (pkgs.xorg) libX11;
+  });
+
   python-igraph = callPackage ../development/python-modules/python-igraph {
     pkgconfig = pkgs.pkgconfig;
     igraph = pkgs.igraph;