opencascade-occt: init at 7.3.0p2

* opencascade-occt: init at 7.3.0p2

This is just a package of the official OpenCASCADE OCCT (not OCE).

pkgs/development/libraries/opencascade-occt/default.nix

@@ -0,0 +1,42 @@
+{ stdenv
+, fetchurl
+, cmake
+, tcl
+, tk
+, vtk
+, mesa_glu
+, libXext
+, libXmu
+, libXi
+, doxygen
+}:
+
+let version = "7.3.0p2";
+    commit = "V${builtins.replaceStrings ["."] ["_"] version}";
+
+in stdenv.mkDerivation {
+
+  name = "opencascade-occt-${version}";
+
+  src = fetchurl {
+    name = "occt-${commit}.tar.gz";
+    url = "https://git.dev.opencascade.org/gitweb/?p=occt.git;a=snapshot;h=${commit};sf=tgz";
+    sha256 = "0nc9k1nqpj0n99pr7qkva79irmqhh007dffwghiyzs031zhd7i6w";
+  };
+
+  nativeBuildInputs = [ cmake ];
+  buildInputs = [ tcl tk vtk mesa_glu libXext libXmu libXi doxygen ];
+
+  enableParallelBuilding = true;
+
+  meta = with stdenv.lib; {
+    description = "Open CASCADE Technology, libraries for 3D modeling and numerical simulation";
+    homepage = "https://www.opencascade.org/";
+    license = licenses.lgpl21;  # essentially...
+    # The special exception defined in the file OCCT_LGPL_EXCEPTION.txt
+    # are basically about making the license a little less share-alike.
+    maintainers = with maintainers; [ amiloradovsky ];
+    platforms = platforms.all;
+  };
+
+}

pkgs/top-level/all-packages.nix

@@ -11832,6 +11832,7 @@ in
   openbabel = callPackage ../development/libraries/openbabel { };
 
   opencascade = callPackage ../development/libraries/opencascade { };
+  opencascade-occt = callPackage ../development/libraries/opencascade-occt { };
 
   opencl-headersGen = v: callPackage ../development/libraries/opencl-headers { version = v; };
   opencl-headers_1_2 = opencl-headersGen "12";