clipper: init at 6.4.2

pkgs/development/libraries/clipper/default.nix

@@ -0,0 +1,27 @@
+{ stdenv, fetchurl, cmake, ninja, unzip }:
+
+stdenv.mkDerivation rec {
+  version = "6.4.2";
+  name = "Clipper-${version}";
+  src = fetchurl {
+    url = "mirror://sourceforge/polyclipping/clipper_ver${version}.zip";
+    sha256 = "09q6jc5k7p9y5d75qr2na5d1gm0wly5cjnffh127r04l47c20hx1";
+  };
+
+  sourceRoot = "cpp";
+
+  buildInputs = [ ];
+
+  nativeBuildInputs = [ cmake ninja unzip ];
+
+  meta = with stdenv.lib; {
+    longDescription = ''
+      The Clipper library performs line & polygon clipping - intersection, union, difference & exclusive-or,
+      and line & polygon offsetting. The library is based on Vatti's clipping algorithm.
+    '';
+    homepage = https://www.angusj.com/delphi/clipper.php;
+    license = licenses.boost;
+    maintainers = with maintainers; [ mpickering ];
+    platforms = with platforms; unix;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -8524,6 +8524,8 @@ with pkgs;
 
   clearsilver = callPackage ../development/libraries/clearsilver { };
 
+  clipper = callPackage ../development/libraries/clipper { };
+
   cln = callPackage ../development/libraries/cln { };
 
   clucene_core_2 = callPackage ../development/libraries/clucene-core/2.x.nix { };