devel/py-pynest2d: upgrade for Cura 5.7

- Change of build system replacing upstream build system

13 files changed, 655 insertions, 103 deletions

diff --git a/devel/py-pynest2d/Makefile b/devel/py-pynest2d/Makefile
index b0cc564a598a..ff78129d0d9d 100644
--- a/devel/py-pynest2d/Makefile
+++ b/devel/py-pynest2d/Makefile
@@ -1,7 +1,5 @@
 PORTNAME=	pynest2d
-# XXX there is no 4.13.1
-DISTVERSION=	4.12.1
-PORTREVISION=	5
+DISTVERSION=	5.3.0
 CATEGORIES=	devel python
 PKGNAMEPREFIX=	${PYTHON_PKGNAMEPREFIX}
 
@@ -12,22 +10,26 @@ WWW=		https://github.com/Ultimaker/libnest2d
 LICENSE=	LGPL3
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
-DEPRECATED=	Fails to build with modern python
-EXPIRATION_DATE=	2024-06-29
-
 RUN_DEPENDS=	${LOCALBASE}/include/libnest2d/libnest2d.hpp:devel/libnest2d-ultimaker
-BUILD_DEPENDS=	${LOCALBASE}/include/libnest2d/libnest2d.hpp:devel/libnest2d-ultimaker \
-		sip:devel/py-sip4
+BUILD_DEPENDS=	${PYTHON_PKGNAMEPREFIX}sip>=0:devel/py-sip@${PY_FLAVOR}
 LIB_DEPENDS=	libpolyclipping.so:graphics/polyclipping \
 		libboost_system.so:devel/boost-libs \
 		libnlopt.so:math/nlopt
 
-USES=		python cmake compiler:c++11-lang pyqt:5 pkgconfig
+USES=		python cmake compiler:c++11-lang pyqt:6 pkgconfig
 USE_PYTHON=	flavors
 
 USE_GITHUB=	yes
-GH_TUPLE=	Ultimaker:pynest2d:baec470
+GH_ACCOUNT=	Ultimaker
 CMAKE_ARGS=	-DLIBNEST2D_INCLUDE_DIRS=${PREFIX}/include/libnest2d
 
 CONFIGURE_ENV=	CLIPPER_PATH=${LOCALBASE} VERBOSE=y
+
+post-extract:
+	@${MKDIR} ${WRKSRC}/cmake
+	@for f in COPYING-CMAKE-SCRIPTS FindClipper.cmake FindNLopt.cmake FindSIP.cmake FindSIP.py Findlibnest2d.cmake SIPMacros.cmake; do \
+		${CP} ${FILESDIR}/$$f ${WRKSRC}/cmake; \
+	done
+	@${CP} ${FILESDIR}/CMakeLists.txt ${WRKSRC}
+
 .include <bsd.port.mk>
diff --git a/devel/py-pynest2d/distinfo b/devel/py-pynest2d/distinfo
index 62094dc9c723..71c5f39d7ca3 100644
--- a/devel/py-pynest2d/distinfo
+++ b/devel/py-pynest2d/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1638125132
-SHA256 (Ultimaker-pynest2d-4.12.1-baec470_GH0.tar.gz) = 199116bd9baa13a8231806c1af4e6ac54261c69188a5ba3f58b1ac38b56238c4
-SIZE (Ultimaker-pynest2d-4.12.1-baec470_GH0.tar.gz) = 18449
+TIMESTAMP = 1713678690
+SHA256 (Ultimaker-pynest2d-5.3.0_GH0.tar.gz) = 637c303396f4ffcb8962cd0ff7a1f4178d4e4986abd96b52015a9be4f7c4dc56
+SIZE (Ultimaker-pynest2d-5.3.0_GH0.tar.gz) = 25143
diff --git a/devel/py-pynest2d/files/CMakeLists.txt b/devel/py-pynest2d/files/CMakeLists.txt
new file mode 100644
index 000000000000..5e195d253227
--- /dev/null
+++ b/devel/py-pynest2d/files/CMakeLists.txt
@@ -0,0 +1,63 @@
+# Copyright (c) 2020 Ultimaker B.V.
+# pynest2d is released under the terms of the LGPLv3 or higher.
+
+project(pynest2d)
+cmake_minimum_required(VERSION 3.6)  # Lowest version it's been tested with.
+
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
+
+# Requirements.
+# FIXME: Remove the code for CMake <3.12 once we have switched over completely.
+# FindPython3 is a new module since CMake 3.12. It deprecates FindPythonInterp and FindPythonLibs.
+if(${CMAKE_VERSION} VERSION_LESS 3.12)
+    # FIXME: Use FindPython3 to find Python, new in CMake 3.12.
+    # However currently on our CI server it finds the wrong Python version and then doesn't find the headers.
+    find_package(PythonInterp 3.5 REQUIRED)
+    find_package(PythonLibs 3.5 REQUIRED)
+
+else()
+    # Use FindPython3 for CMake >=3.12
+    find_package(Python3 3.5 REQUIRED COMPONENTS Interpreter Development)
+endif()
+execute_process(COMMAND ${Python_EXECUTABLE} -c "import sysconfig; print(sysconfig.get_path('platlib'), end='')" OUTPUT_VARIABLE Python_SITEARCH)
+
+find_package(SIP REQUIRED)  # To create Python bindings.
+include(SIPMacros)
+find_package(libnest2d REQUIRED)  # The library we're creating bindings for.
+find_package(Clipper REQUIRED)  # Dependency of libnest2d.
+find_package(NLopt REQUIRED)  # Dependency of libnest2d.
+find_package(Boost REQUIRED)  # Dependency of libnest2d.
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DLIBNEST2D_GEOMETRIES_clipper -DLIBNEST2D_OPTIMIZERS_nlopt -DLIBNEST2D_THREADING_std")  # Tell libnest2d to use Clipper and NLopt, and standard threads.
+
+# Some build options.
+set(CMAKE_CXX_STANDARD 17)
+if(APPLE AND CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
+endif()
+if(UNIX)
+    # Want to be able to move symbols from the Clipper library.
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC")
+    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fPIC")
+endif()
+if(NOT DEFINED LIB_SUFFIX)
+    set(LIB_SUFFIX "")
+endif()
+
+# Building and linking.
+set(SIP_EXTRA_FILES_DEPEND
+    python/BottomLeftConfig.sip
+    python/Box.sip
+    python/Circle.sip
+    python/DJDHeuristicConfig.sip
+    python/Item.sip
+    python/ItemGroup.sip
+    python/NfpConfig.sip
+    python/Point.sip
+    python/Rectangle.sip
+    python/String.sip
+)
+
+set(SIP_EXTRA_OPTIONS -g -n PyQt6.sip)  # Always release the GIL before calling C++ methods. -n PyQt6.sip is required to not get the PyCapsule error
+set(SIP_EXTRA_INCLUDE_DIRS ${SIP_INCLUDE_DIRS} ${Python3_INCLUDE_DIRS} ${CLIPPER_INCLUDE_DIRS} ${NLopt_INCLUDE_DIRS} ${LIBNEST2D_INCLUDE_DIRS})
+generate_sip_python_module_code(pynest2d python/pynest2d.sip python/pynest2d.sip "" pynest2d_cpp_files)
+build_sip_python_module(pynest2d python/pynest2d.sip "${pynest2d_cpp_files}" "${CLIPPER_LIBRARIES};${NLopt_LIBRARIES}")
diff --git a/devel/py-pynest2d/files/COPYING-CMAKE-SCRIPTS b/devel/py-pynest2d/files/COPYING-CMAKE-SCRIPTS
new file mode 100644
index 000000000000..4b417765f3a8
--- /dev/null
+++ b/devel/py-pynest2d/files/COPYING-CMAKE-SCRIPTS
@@ -0,0 +1,22 @@
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+1. Redistributions of source code must retain the copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+3. The name of the author may not be used to endorse or promote products 
+   derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/devel/py-pynest2d/files/FindClipper.cmake b/devel/py-pynest2d/files/FindClipper.cmake
new file mode 100644
index 000000000000..a399dfde5e43
--- /dev/null
+++ b/devel/py-pynest2d/files/FindClipper.cmake
@@ -0,0 +1,88 @@
+#Find Clipper library (http://www.angusj.com/delphi/clipper.php).
+#The following variables are set
+#
+#CLIPPER_FOUND
+#CLIPPER_INCLUDE_DIRS
+#CLIPPER_LIBRARIES
+#
+#It searches the environment variable $CLIPPER_PATH automatically.
+
+unset(CLIPPER_FOUND CACHE)
+unset(CLIPPER_INCLUDE_DIRS CACHE)
+unset(CLIPPER_LIBRARIES CACHE)
+unset(CLIPPER_LIBRARIES_RELEASE CACHE)
+unset(CLIPPER_LIBRARIES_DEBUG CACHE)
+
+if($<LOWER_CASE:${CMAKE_BUILD_TYPE}> EQUAL "debug")
+    set(CLIPPER_BUILD_TYPE DEBUG)
+else()
+    set(CLIPPER_BUILD_TYPE RELEASE)
+endif()
+
+find_path(CLIPPER_INCLUDE_DIRS clipper.hpp
+    $ENV{CLIPPER_PATH}
+    $ENV{CLIPPER_PATH}/cpp/
+    $ENV{CLIPPER_PATH}/include/
+    $ENV{CLIPPER_PATH}/include/polyclipping/
+    ${PROJECT_SOURCE_DIR}/python/pymesh/third_party/include/
+    ${PROJECT_SOURCE_DIR}/python/pymesh/third_party/include/polyclipping/
+    ${CMAKE_PREFIX_PATH}/include/polyclipping
+    ${CMAKE_PREFIX_PATH}/include/
+    /opt/local/include/
+    /opt/local/include/polyclipping/
+    /usr/local/include/
+    /usr/local/include/polyclipping/
+    /usr/include
+    /usr/include/polyclipping/
+)
+
+set(LIB_SEARCHDIRS 
+    $ENV{CLIPPER_PATH}
+    $ENV{CLIPPER_PATH}/cpp/
+    $ENV{CLIPPER_PATH}/cpp/build/
+    $ENV{CLIPPER_PATH}/lib/
+    $ENV{CLIPPER_PATH}/lib/polyclipping/
+    ${PROJECT_SOURCE_DIR}/python/pymesh/third_party/lib/
+    ${PROJECT_SOURCE_DIR}/python/pymesh/third_party/lib/polyclipping/
+    ${CMAKE_PREFIX_PATH}/lib/
+    ${CMAKE_PREFIX_PATH}/lib/polyclipping/
+    /opt/local/lib/
+    /opt/local/lib/polyclipping/
+    /usr/local/lib/
+    /usr/local/lib/polyclipping/
+    /usr/lib/polyclipping
+)
+
+set(_deb_postfix "d")
+
+find_library(CLIPPER_LIBRARIES_RELEASE polyclipping ${LIB_SEARCHDIRS})
+find_library(CLIPPER_LIBRARIES_DEBUG polyclipping${_deb_postfix} ${LIB_SEARCHDIRS})
+
+if(CLIPPER_LIBRARIES_${CLIPPER_BUILD_TYPE})
+    set(CLIPPER_LIBRARIES "${CLIPPER_LIBRARIES_${CLIPPER_BUILD_TYPE}}")
+else()
+    set(CLIPPER_LIBRARIES "${CLIPPER_LIBRARIES_RELEASE}")
+endif()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(Clipper
+    "Clipper library cannot be found.  Consider set CLIPPER_PATH environment variable"
+    CLIPPER_INCLUDE_DIRS
+    CLIPPER_LIBRARIES
+)
+
+mark_as_advanced(CLIPPER_INCLUDE_DIRS CLIPPER_LIBRARIES)
+
+if(CLIPPER_FOUND)
+    add_library(Clipper::Clipper UNKNOWN IMPORTED)
+    set_target_properties(Clipper::Clipper PROPERTIES IMPORTED_LOCATION ${CLIPPER_LIBRARIES})
+    set_target_properties(Clipper::Clipper PROPERTIES INTERFACE_INCLUDE_DIRECTORIES ${CLIPPER_INCLUDE_DIRS})
+    if(CLIPPER_LIBRARIES_RELEASE AND CLIPPER_LIBRARIES_DEBUG)
+        set_target_properties(Clipper::Clipper PROPERTIES
+            IMPORTED_LOCATION_DEBUG          ${CLIPPER_LIBRARIES_DEBUG}
+            IMPORTED_LOCATION_RELWITHDEBINFO ${CLIPPER_LIBRARIES_RELEASE}
+            IMPORTED_LOCATION_RELEASE        ${CLIPPER_LIBRARIES_RELEASE}
+            IMPORTED_LOCATION_MINSIZEREL     ${CLIPPER_LIBRARIES_RELEASE}
+        )
+    endif()
+endif()
diff --git a/devel/py-pynest2d/files/FindNLopt.cmake b/devel/py-pynest2d/files/FindNLopt.cmake
new file mode 100644
index 000000000000..bf2ed3527dc7
--- /dev/null
+++ b/devel/py-pynest2d/files/FindNLopt.cmake
@@ -0,0 +1,83 @@
+#Find NLopt library.
+#The following variables are set
+#
+#NLopt_FOUND
+#NLopt_INCLUDE_DIRS
+#NLopt_LIBRARIES
+#
+#It searches the environment variable $NLopt_PATH automatically.
+
+unset(NLopt_FOUND CACHE)
+unset(NLopt_INCLUDE_DIRS CACHE)
+unset(NLopt_LIBRARIES CACHE)
+unset(NLopt_LIBRARIES_RELEASE CACHE)
+unset(NLopt_LIBRARIES_DEBUG CACHE)
+
+if($<LOWER_CASE:${CMAKE_BUILD_TYPE}> EQUAL "debug")
+    set(NLopt_BUILD_TYPE DEBUG)
+else()
+    set(NLopt_BUILD_TYPE RELEASE)
+endif()
+
+find_path(NLopt_INCLUDE_DIRS nlopt.hpp
+    $ENV{NLopt_PATH}
+    $ENV{NLopt_PATH}/cpp/
+    $ENV{NLopt_PATH}/include/
+    ${CMAKE_PREFIX_PATH}/include/nlopt
+    ${CMAKE_PREFIX_PATH}/include/
+    /opt/local/include/
+    /opt/local/include/nlopt/
+    /usr/local/include/
+    /usr/local/include/nlopt/
+    /usr/include
+    /usr/include/nlopt/
+)
+
+set(LIB_SEARCHDIRS 
+    $ENV{NLopt_PATH}
+    $ENV{NLopt_PATH}/cpp/
+    $ENV{NLopt_PATH}/cpp/build/
+    $ENV{NLopt_PATH}/lib/
+    $ENV{NLopt_PATH}/lib/nlopt/
+    ${CMAKE_PREFIX_PATH}/lib/
+    ${CMAKE_PREFIX_PATH}/lib/nlopt/
+    /opt/local/lib/
+    /opt/local/lib/nlopt/
+    /usr/local/lib/
+    /usr/local/lib/nlopt/
+    /usr/lib/nlopt
+)
+
+set(_deb_postfix "d")
+
+find_library(NLopt_LIBRARIES_RELEASE nlopt ${LIB_SEARCHDIRS})
+find_library(NLopt_LIBRARIES_DEBUG nlopt${_deb_postfix} ${LIB_SEARCHDIRS})
+
+if(NLopt_LIBRARIES_${NLopt_BUILD_TYPE})
+    set(NLopt_LIBRARIES "${NLopt_LIBRARIES_${NLopt_BUILD_TYPE}}")
+else()
+    set(NLopt_LIBRARIES "${NLopt_LIBRARIES_RELEASE}")
+endif()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(NLopt
+    "NLopt library cannot be found. Consider set NLopt_PATH environment variable"
+    NLopt_INCLUDE_DIRS
+    NLopt_LIBRARIES
+)
+
+mark_as_advanced(NLopt_INCLUDE_DIRS NLopt_LIBRARIES)
+
+if(NLopt_FOUND)
+    add_library(NLopt::nlopt UNKNOWN IMPORTED)
+    set_target_properties(NLopt::nlopt PROPERTIES IMPORTED_LOCATION ${NLopt_LIBRARIES})
+    set_target_properties(NLopt::nlopt PROPERTIES INTERFACE_INCLUDE_DIRECTORIES ${NLopt_INCLUDE_DIRS})
+    if(NLopt_LIBRARIES_RELEASE AND NLopt_LIBRARIES_DEBUG)
+        set_target_properties(NLopt::nlopt PROPERTIES
+            IMPORTED_LOCATION_DEBUG          ${NLopt_LIBRARIES_DEBUG}
+            IMPORTED_LOCATION_RELWITHDEBINFO ${NLopt_LIBRARIES_RELEASE}
+            IMPORTED_LOCATION_RELEASE        ${NLopt_LIBRARIES_RELEASE}
+            IMPORTED_LOCATION_MINSIZEREL     ${NLopt_LIBRARIES_RELEASE}
+        )
+    endif()
+endif()
diff --git a/devel/py-pynest2d/files/FindSIP.cmake b/devel/py-pynest2d/files/FindSIP.cmake
new file mode 100644
index 000000000000..101a991d7de1
--- /dev/null
+++ b/devel/py-pynest2d/files/FindSIP.cmake
@@ -0,0 +1,64 @@
+# Find SIP
+# ~~~~~~~~
+#
+# SIP website: http://www.riverbankcomputing.co.uk/sip/index.php
+#
+# Find the installed version of SIP. FindSIP should be called after Python
+# has been found.
+#
+# This file defines the following variables:
+#
+# SIP_VERSION - The version of SIP found expressed as a 6 digit hex number
+#     suitable for comparison as a string.
+#
+# SIP_VERSION_STR - The version of SIP found as a human readable string.
+#
+# SIP_BINARY_PATH - Path and filename of the SIP command line executable.
+#
+# SIP_INCLUDE_DIR - Directory holding the SIP C++ header file.
+#
+# SIP_DEFAULT_SIP_DIR - Default directory where .sip files should be installed
+#     into.
+
+# Copyright (c) 2007, Simon Edwards <simon@simonzone.com>
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
+
+
+IF(SIP_VERSION)
+  # Already in cache, be silent
+  SET(SIP_FOUND TRUE)
+ELSE(SIP_VERSION)
+
+  FIND_FILE(_find_sip_py FindSIP.py PATHS ${CMAKE_MODULE_PATH} NO_CMAKE_FIND_ROOT_PATH)
+
+  EXECUTE_PROCESS(COMMAND ${Python_EXECUTABLE} ${_find_sip_py} OUTPUT_VARIABLE sip_config)
+  IF(sip_config)
+    STRING(REGEX REPLACE "^sip_version:([^\n]+).*$" "\\1" SIP_VERSION ${sip_config})
+    STRING(REGEX REPLACE ".*\nsip_version_num:([^\n]+).*$" "\\1" SIP_VERSION_NUM ${sip_config})
+    STRING(REGEX REPLACE ".*\nsip_version_str:([^\n]+).*$" "\\1" SIP_VERSION_STR ${sip_config})
+    STRING(REGEX REPLACE ".*\ndefault_sip_dir:([^\n]+).*$" "\\1" SIP_DEFAULT_SIP_DIR ${sip_config})
+    IF(${SIP_VERSION_STR} VERSION_LESS 5)
+      STRING(REGEX REPLACE ".*\nsip_bin:([^\n]+).*$" "\\1" SIP_BINARY_PATH ${sip_config})
+      STRING(REGEX REPLACE ".*\nsip_inc_dir:([^\n]+).*$" "\\1" SIP_INCLUDE_DIR ${sip_config})
+      STRING(REGEX REPLACE ".*\nsip_module_dir:([^\n]+).*$" "\\1" SIP_MODULE_DIR ${sip_config})
+    ELSE(${SIP_VERSION_STR} VERSION_LESS 5)
+      FIND_PROGRAM(SIP_BUILD_EXECUTABLE sip-build)
+    ENDIF(${SIP_VERSION_STR} VERSION_LESS 5)
+    SET(SIP_FOUND TRUE)
+  ENDIF(sip_config)
+
+  IF(SIP_FOUND)
+    IF(NOT SIP_FIND_QUIETLY)
+      MESSAGE(STATUS "Found SIP version: ${SIP_VERSION_STR}")
+    ENDIF(NOT SIP_FIND_QUIETLY)
+  ELSE(SIP_FOUND)
+    IF(SIP_FIND_REQUIRED)
+      MESSAGE(FATAL_ERROR "Could not find SIP")
+    ENDIF(SIP_FIND_REQUIRED)
+  ENDIF(SIP_FOUND)
+
+ENDIF(SIP_VERSION)
+
+ADD_DEFINITIONS(-DSIP_VERSION=0x${SIP_VERSION})
diff --git a/devel/py-pynest2d/files/FindSIP.py b/devel/py-pynest2d/files/FindSIP.py
new file mode 100644
index 000000000000..2e8eea04bb56
--- /dev/null
+++ b/devel/py-pynest2d/files/FindSIP.py
@@ -0,0 +1,60 @@
+# -*- coding: utf-8 -*-
+#
+#   Copyright (c) 2007, Simon Edwards <simon@simonzone.com>
+#    All rights reserved.
+#
+#    Redistribution and use in source and binary forms, with or without
+#    modification, are permitted provided that the following conditions are met:
+#        * Redistributions of source code must retain the above copyright
+#        notice, this list of conditions and the following disclaimer.
+#        * Redistributions in binary form must reproduce the above copyright
+#        notice, this list of conditions and the following disclaimer in the
+#        documentation and/or other materials provided with the distribution.
+#        * Neither the name of the  Simon Edwards <simon@simonzone.com> nor the
+#        names of its contributors may be used to endorse or promote products
+#        derived from this software without specific prior written permission.
+#
+#    THIS SOFTWARE IS PROVIDED BY Simon Edwards <simon@simonzone.com> ''AS IS'' AND ANY
+#    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+#    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+#    DISCLAIMED. IN NO EVENT SHALL Simon Edwards <simon@simonzone.com> BE LIABLE FOR ANY
+#    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+#    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+#    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+#    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+#    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+#
+# FindSIP.py
+# Copyright (c) 2007, Simon Edwards <simon@simonzone.com>
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+
+try:
+    import sipbuild
+
+    print("sip_version:%06.0x" % sipbuild.version.SIP_VERSION)
+    print("sip_version_num:%d" % sipbuild.version.SIP_VERSION)
+    print("sip_version_str:%s" % sipbuild.version.SIP_VERSION_STR)
+
+    import sysconfig
+    if "deb_system" in sysconfig.get_scheme_names():
+        python_modules_dir = sysconfig.get_path("purelib", "deb_system")
+    else:
+        python_modules_dir = sysconfig.get_path("purelib")
+    print("default_sip_dir:%s" % python_modules_dir)
+except ImportError:  # Code for SIP v4
+    import sipconfig
+
+    sipcfg = sipconfig.Configuration()
+    print("sip_version:%06.0x" % sipcfg.sip_version)
+    print("sip_version_num:%d" % sipcfg.sip_version)
+    print("sip_version_str:%s" % sipcfg.sip_version_str)
+    print("sip_bin:%s" % sipcfg.sip_bin)
+    print("default_sip_dir:%s" % sipcfg.default_sip_dir)
+    print("sip_inc_dir:%s" % sipcfg.sip_inc_dir)
+    # SIP 4.19.10+ has new sipcfg.sip_module_dir
+    if hasattr(sipcfg, "sip_module_dir"):
+        print("sip_module_dir:%s" % sipcfg.sip_module_dir)
+    else:
+        print("sip_module_dir:%s" % sipcfg.sip_mod_dir)
diff --git a/devel/py-pynest2d/files/Findlibnest2d.cmake b/devel/py-pynest2d/files/Findlibnest2d.cmake
new file mode 100644
index 000000000000..5ba4e45c5c6b
--- /dev/null
+++ b/devel/py-pynest2d/files/Findlibnest2d.cmake
@@ -0,0 +1,29 @@
+# Copyright (c) 2020 Ultimaker B.V.
+# pynest2d is released under the terms of the LGPLv3 or higher.
+
+# This script finds libnest2d on your computer.
+#
+# The output of this script is the following variables:
+# - LIBNEST2D_INCLUDE_DIR: The include directory for libnest2d.
+
+find_package(PkgConfig)  # To easily find files on your computer.
+
+# First try with packageconfig to get a beginning of an idea where to search.
+pkg_check_modules(PC_LIBNEST2D QUIET libnest2d)
+
+find_path(LIBNEST2D_INCLUDE_DIRS NAMES libnest2d/libnest2d.hpp HINTS
+    ${PC_LIBNEST2D_INCLUDE_DIRS}
+    ${PC_LIBNEST2D_INCLUDE_DIRS}/libnest2d
+    ${CMAKE_PREFIX_PATH}/include/
+    ${CMAKE_PREFIX_PATH}/include/libnest2d
+    /opt/local/include/
+    /opt/local/include/libnest2d/
+    /usr/local/include/
+    /usr/local/include/libnest2d/
+    /usr/include
+    /usr/include/libnest2d/
+)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(LIBNEST2D DEFAULT_MSG
+    LIBNEST2D_INCLUDE_DIRS)
diff --git a/devel/py-pynest2d/files/SIPMacros.cmake b/devel/py-pynest2d/files/SIPMacros.cmake
new file mode 100644
index 000000000000..9b3affa1ee1f
--- /dev/null
+++ b/devel/py-pynest2d/files/SIPMacros.cmake
@@ -0,0 +1,231 @@
+# Macros for SIP
+# ~~~~~~~~~~~~~~
+# Copyright (c) 2007, Simon Edwards <simon@simonzone.com>
+# Redistribution and use is allowed according to the terms of the BSD license.
+# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
+#
+# SIP website: http://www.riverbankcomputing.co.uk/sip/index.php
+#
+# This file defines the following macros:
+#
+# ADD_SIP_PYTHON_MODULE (MODULE_NAME MODULE_SIP [library1, libaray2, ...])
+#     Specifies a SIP file to be built into a Python module and installed.
+#     MODULE_NAME is the name of Python module including any path name. (e.g.
+#     os.sys, Foo.bar etc). MODULE_SIP the path and filename of the .sip file
+#     to process and compile. libraryN are libraries that the Python module,
+#     which is typically a shared library, should be linked to. The built
+#     module will also be install into Python's site-packages directory.
+#
+# The behavior of the ADD_SIP_PYTHON_MODULE macro can be controlled by a
+# number of variables:
+#
+# SIP_INCLUDES - List of directories which SIP will scan through when looking
+#     for included .sip files. (Corresponds to the -I option for SIP.)
+#
+# SIP_TAGS - List of tags to define when running SIP. (Corresponds to the -t
+#     option for SIP.)
+#
+# SIP_CONCAT_PARTS - An integer which defines the number of parts the C++ code
+#     of each module should be split into. Defaults to 8. (Corresponds to the
+#     -j option for SIP.)
+#
+# SIP_DISABLE_FEATURES - List of feature names which should be disabled
+#     running SIP. (Corresponds to the -x option for SIP.)
+#
+# SIP_EXTRA_OPTIONS - Extra command line options which should be passed on to
+#     SIP.
+
+# SIP_BUILD_EXTRA_OPTIONS - Extra command line options which should be passed on to
+#     sip-build.
+
+SET(SIP_INCLUDES)
+SET(SIP_TAGS)
+SET(SIP_CONCAT_PARTS 16)
+SET(SIP_DISABLE_FEATURES)
+SET(SIP_EXTRA_OPTIONS)
+SET(SIP_EXTRA_OBJECTS)
+SET(SIP_BUILD_EXTRA_OPTIONS)
+
+MACRO(GENERATE_SIP_PYTHON_MODULE_CODE MODULE_NAME MODULE_SIP SIP_FILES CPP_FILES)
+
+  STRING(REPLACE "." "/" _x ${MODULE_NAME})
+  GET_FILENAME_COMPONENT(_parent_module_path ${_x} PATH)
+  GET_FILENAME_COMPONENT(_child_module_name ${_x} NAME)
+  GET_FILENAME_COMPONENT(_module_path ${MODULE_SIP} PATH)
+  GET_FILENAME_COMPONENT(_abs_module_sip ${MODULE_SIP} ABSOLUTE)
+
+  # If this is not need anymore (using input configuration file for SIP files)
+  # SIP could be run in the source rather than in binary directory
+  #SET(_configured_module_sip ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/${_module_path}.sip)
+  SET(_configured_module_sip ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/${_child_module_name}.sip)
+  FOREACH (_sip_file ${SIP_FILES})
+    GET_FILENAME_COMPONENT(_sip_file_path ${_sip_file} PATH)
+    GET_FILENAME_COMPONENT(_sip_file_name_we ${_sip_file} NAME_WE)
+    #FILE(RELATIVE_PATH _sip_file_relpath ${BINDING_FILES_ROOT_DIR} "${_sip_file_path}/${_sip_file_name_we}")
+    SET(_sip_file_relpath "${_sip_file_path}/${_sip_file_name_we}")
+    SET(_out_sip_file "${CMAKE_CURRENT_BINARY_DIR}/${_sip_file_relpath}.sip")
+    CONFIGURE_FILE(${_sip_file} ${_out_sip_file})
+  ENDFOREACH (_sip_file)
+
+  SET(_message "-DMESSAGE=Generating CPP code for module ${MODULE_NAME}")
+  SET(_sip_output_files)
+
+  # Suppress warnings
+  IF(PEDANTIC)
+    IF(MSVC)
+      ADD_DEFINITIONS(
+        /wd4189  # local variable is initialized but not referenced
+        /wd4996  # deprecation warnings (bindings re-export deprecated methods)
+        /wd4701  # potentially uninitialized variable used (sip generated code)
+        /wd4702  # unreachable code (sip generated code)
+        /wd4703  # potentially uninitialized local pointer variable 'sipType' used
+      )
+    ELSE(MSVC)
+      # disable all warnings
+      ADD_DEFINITIONS( -w -Wno-deprecated-declarations )
+      IF(NOT APPLE)
+        ADD_DEFINITIONS( -fpermissive )
+      ENDIF(NOT APPLE)
+    ENDIF(MSVC)
+  ENDIF(PEDANTIC)
+
+  IF(MSVC)
+    ADD_DEFINITIONS( /bigobj )
+  ENDIF(MSVC)
+
+  IF (SIP_BUILD_EXECUTABLE)
+
+    FILE(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/build/${_child_module_name})    # Output goes in this dir.
+
+    SET(_sip_output_files 
+        ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/build/${_child_module_name}/sip_array.c
+        ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/build/${_child_module_name}/sip_bool.cpp
+        ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/build/${_child_module_name}/sip_core.c
+        ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/build/${_child_module_name}/sip_descriptors.c
+        ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/build/${_child_module_name}/sip_enum.c
+        ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/build/${_child_module_name}/sip_int_convertors.c
+        ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/build/${_child_module_name}/sip_object_map.c
+        ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/build/${_child_module_name}/sip_threads.c
+        ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/build/${_child_module_name}/sip_voidptr.c)
+    FOREACH(CONCAT_NUM RANGE 0 ${SIP_CONCAT_PARTS} )
+      IF( ${CONCAT_NUM} LESS ${SIP_CONCAT_PARTS} )
+        SET(_sip_output_files ${_sip_output_files} ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/build/${_child_module_name}/sip${_child_module_name}part${CONCAT_NUM}.cpp )
+      ENDIF( ${CONCAT_NUM} LESS ${SIP_CONCAT_PARTS} )
+    ENDFOREACH(CONCAT_NUM RANGE 0 ${SIP_CONCAT_PARTS} )
+
+    #SET(SIPCMD ${SIP_BUILD_EXECUTABLE} --no-protected-is-public --pep484-pyi --no-make --concatenate=${SIP_CONCAT_PARTS} --qmake=${QMAKE_EXECUTABLE} --include-dir=${CMAKE_CURRENT_BINARY_DIR} --include-dir=${PYQT_SIP_DIR} --api-dir ${CMAKE_BINARY_DIR}/python ${SIP_BUILD_EXTRA_OPTIONS})
+    LIST(JOIN SIP_EXTRA_INCLUDE_DIRS "\",\"" _sip_extra_includes)
+    FILE(WRITE ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/pyproject.toml "\
+[build-system]\n\
+requires = [\"sip >=6, <7\"]\n\
+build-backend = \"sipbuild.api\"
+[tool.sip.metadata]\n\
+name = \"${_child_module_name}\"\n\
+[tool.sip.bindings.${_child_module_name}]\n\
+concatenate = ${SIP_CONCAT_PARTS}\n\
+include-dirs = [\"${_sip_extra_includes}\"]\n\
+protected-is-public = false\n\
+pep484-pyi = true\n\
+[tool.sip.project]\n\
+sip-files-dir = \"${CMAKE_CURRENT_SOURCE_DIR}/${_module_path}\"\n\
+")
+    SET(SIPCMD ${SIP_BUILD_EXECUTABLE} --no-compile ${SIP_BUILD_EXTRA_OPTIONS})
+
+    ADD_CUSTOM_COMMAND(
+      OUTPUT ${_sip_output_files}
+      COMMAND ${CMAKE_COMMAND} -E echo ${message}
+      COMMAND ${SIPCMD}
+      COMMAND ${CMAKE_COMMAND} -E touch ${_sip_output_files}
+      WORKING_DIRECTORY ${_module_path}
+      MAIN_DEPENDENCY ${_configured_module_sip}
+      DEPENDS ${SIP_EXTRA_FILES_DEPEND}
+      VERBATIM
+    )
+
+  ELSE (SIP_BUILD_EXECUTABLE)
+
+    FILE(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/${_module_path})    # Output goes in this dir.
+
+    SET(_sip_includes)
+    FOREACH (_inc ${SIP_INCLUDES})
+      GET_FILENAME_COMPONENT(_abs_inc ${_inc} ABSOLUTE)
+      LIST(APPEND _sip_includes -I ${_abs_inc})
+    ENDFOREACH (_inc )
+
+    SET(_sip_tags)
+    FOREACH (_tag ${SIP_TAGS})
+      LIST(APPEND _sip_tags -t ${_tag})
+    ENDFOREACH (_tag)
+
+    SET(_sip_x)
+    FOREACH (_x ${SIP_DISABLE_FEATURES})
+      LIST(APPEND _sip_x -x ${_x})
+    ENDFOREACH (_x ${SIP_DISABLE_FEATURES})
+
+    FOREACH(CONCAT_NUM RANGE 0 ${SIP_CONCAT_PARTS} )
+      IF( ${CONCAT_NUM} LESS ${SIP_CONCAT_PARTS} )
+        SET(_sip_output_files ${_sip_output_files} ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/sip${_child_module_name}part${CONCAT_NUM}.cpp )
+      ENDIF( ${CONCAT_NUM} LESS ${SIP_CONCAT_PARTS} )
+    ENDFOREACH(CONCAT_NUM RANGE 0 ${SIP_CONCAT_PARTS} )
+
+    SET(SIPCMD ${SIP_BINARY_PATH} ${_sip_tags} -w -e ${_sip_x} ${SIP_EXTRA_OPTIONS} -j ${SIP_CONCAT_PARTS} -c ${CMAKE_CURRENT_BINARY_DIR}/${_module_path} -I ${CMAKE_CURRENT_BINARY_DIR}/${_module_path} ${_sip_includes} ${_configured_module_sip})
+    ADD_CUSTOM_COMMAND(
+      OUTPUT ${_sip_output_files}
+      COMMAND ${CMAKE_COMMAND} -E echo ${message}
+      COMMAND ${CMAKE_COMMAND} -E touch ${_sip_output_files}
+      COMMAND ${SIPCMD}
+      MAIN_DEPENDENCY ${_configured_module_sip}
+      DEPENDS ${SIP_EXTRA_FILES_DEPEND}
+      VERBATIM
+    )
+
+  ENDIF (SIP_BUILD_EXECUTABLE)
+
+  ADD_CUSTOM_TARGET(generate_sip_${MODULE_NAME}_cpp_files DEPENDS ${_sip_output_files})
+
+  SET(CPP_FILES ${_sip_output_files})
+ENDMACRO(GENERATE_SIP_PYTHON_MODULE_CODE)
+
+# Will compile and link the module
+MACRO(BUILD_SIP_PYTHON_MODULE MODULE_NAME SIP_FILES EXTRA_OBJECTS)
+  SET(EXTRA_LINK_LIBRARIES ${ARGN})
+
+  # We give this target a long logical target name.
+  # (This is to avoid having the library name clash with any already
+  # install library names. If that happens then cmake dependency
+  # tracking get confused.)
+  STRING(REPLACE "." "_" _logical_name ${MODULE_NAME})
+  SET(_logical_name "python_module_${_logical_name}")
+  GET_FILENAME_COMPONENT(_module_path ${SIP_FILES} PATH)
+
+  ADD_LIBRARY(${_logical_name} MODULE ${_sip_output_files} ${EXTRA_OBJECTS})
+  SET_PROPERTY(TARGET ${_logical_name} PROPERTY AUTOMOC OFF)
+  TARGET_INCLUDE_DIRECTORIES(${_logical_name} PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/${_module_path}/build ${SIP_EXTRA_INCLUDE_DIRS})
+
+  IF (${SIP_VERSION_STR} VERSION_LESS 5.0.0)
+    # require c++14 only -- sip breaks with newer versions due to reliance on throw(...) annotations removed in c++17
+    TARGET_COMPILE_FEATURES(${_logical_name} PRIVATE cxx_std_14)
+  ENDIF (${SIP_VERSION_STR} VERSION_LESS 5.0.0)
+
+  SET_TARGET_PROPERTIES(${_logical_name} PROPERTIES CXX_VISIBILITY_PRESET default)
+  IF (NOT APPLE)
+    TARGET_LINK_LIBRARIES(${_logical_name} ${Python_LIBRARIES})
+  ENDIF (NOT APPLE)
+  TARGET_LINK_LIBRARIES(${_logical_name} ${EXTRA_LINK_LIBRARIES})
+  IF (APPLE)
+    SET_TARGET_PROPERTIES(${_logical_name} PROPERTIES LINK_FLAGS "-undefined dynamic_lookup")
+  ENDIF (APPLE)
+  SET_TARGET_PROPERTIES(${_logical_name} PROPERTIES PREFIX "" OUTPUT_NAME ${_child_module_name})
+
+  IF (WIN32)
+    SET_TARGET_PROPERTIES(${_logical_name} PROPERTIES SUFFIX ".pyd")
+    GET_TARGET_PROPERTY(_runtime_output ${_logical_name} RUNTIME_OUTPUT_DIRECTORY)
+    ADD_CUSTOM_COMMAND(TARGET ${_logical_name} POST_BUILD
+      COMMAND ${CMAKE_COMMAND} -E echo "Copying extension ${_child_module_name}"
+      COMMAND ${CMAKE_COMMAND} -E copy_if_different "$<TARGET_FILE:${_logical_name}>" "${_runtime_output}/${_child_module_name}.pyd"
+      DEPENDS ${_logical_name}
+      )
+  ENDIF(WIN32)
+
+  INSTALL(TARGETS ${_logical_name} DESTINATION "${Python_SITEARCH}/${_parent_module_path}")
+ENDMACRO(BUILD_SIP_PYTHON_MODULE MODULE_NAME SIP_FILES EXTRA_OBJECTS)
diff --git a/devel/py-pynest2d/files/patch-cmake_FindClipper.cmake b/devel/py-pynest2d/files/patch-cmake_FindClipper.cmake
deleted file mode 100644
index 14295387103f..000000000000
--- a/devel/py-pynest2d/files/patch-cmake_FindClipper.cmake
+++ /dev/null
@@ -1,13 +0,0 @@
---- cmake/FindClipper.cmake.orig	2020-12-24 21:19:11 UTC
-+++ cmake/FindClipper.cmake
-@@ -55,8 +55,8 @@ set(LIB_SEARCHDIRS 
- 
- set(_deb_postfix "d")
- 
--find_library(CLIPPER_LIBRARIES_RELEASE polyclipping ${LIB_SEARCHDIRS})
--find_library(CLIPPER_LIBRARIES_DEBUG polyclipping${_deb_postfix} ${LIB_SEARCHDIRS})
-+find_library(CLIPPER_LIBRARIES_RELEASE libpolyclipping.so ${LIB_SEARCHDIRS})
-+find_library(CLIPPER_LIBRARIES_DEBUG libpolyclipping${_deb_postfix} ${LIB_SEARCHDIRS})
- 
- if(CLIPPER_LIBRARIES_${CLIPPER_BUILD_TYPE})
-     set(CLIPPER_LIBRARIES "${CLIPPER_LIBRARIES_${CLIPPER_BUILD_TYPE}}")
diff --git a/devel/py-pynest2d/files/patch-src_ItemGroup.sip b/devel/py-pynest2d/files/patch-src_ItemGroup.sip
deleted file mode 100644
index eea87008bdf2..000000000000
--- a/devel/py-pynest2d/files/patch-src_ItemGroup.sip
+++ /dev/null
@@ -1,42 +0,0 @@
---- src/ItemGroup.sip.orig	2020-12-24 22:41:47 UTC
-+++ src/ItemGroup.sip
-@@ -23,7 +23,7 @@
-         for(size_t i = 0; i < size; ++i)
-         {
-             Item item = sipCpp->at(0);
--            PyObject* python_item = sipConvertFromInstance(&item, sipClass_Item, sipTransferObj);
-+            PyObject* python_item = sipConvertFromType(&item, sipType_Item, sipTransferObj);
-             if(!python_item)
-             {
-                 Py_DECREF(result_list);
-@@ -48,20 +48,20 @@
-         PyObject* list_item;
-         while(list_item = PyIter_Next(iterator))
-         {
--            if(!sipCanConvertToInstance(list_item, sipClass_Item, SIP_NOT_NONE))
-+            if(!sipCanConvertToType(list_item, sipType_Item, SIP_NOT_NONE))
-             {
-                 PyErr_Format(PyExc_TypeError, "Object in iterable cannot be converted to a libnest2d Item.");
-                 *sipIsErr = 1;
-                 break;
-             }
-             int state;
--            Item* item = reinterpret_cast<Item*>(sipConvertToInstance(list_item, sipClass_Item, 0, SIP_NOT_NONE, &state, sipIsErr));
-+            Item* item = reinterpret_cast<Item*>(sipConvertToType(list_item, sipType_Item, 0, SIP_NOT_NONE, &state, sipIsErr));
-             if(!*sipIsErr)
-             {
-                 result->push_back(*item);
-             }
- 
--            sipReleaseInstance(item, sipClass_Item, state);
-+            sipReleaseType(item, sipType_Item, state);
-             Py_DECREF(list_item);
-         }
- 
-@@ -74,4 +74,4 @@
-         *sipCppPtr = result;
-         return sipGetState(sipTransferObj);
-     %End
--};
-\ No newline at end of file
-+};
diff --git a/devel/py-pynest2d/files/patch-src_Pynest2D.sip b/devel/py-pynest2d/files/patch-src_Pynest2D.sip
deleted file mode 100644
index 14aa63905d9d..000000000000
--- a/devel/py-pynest2d/files/patch-src_Pynest2D.sip
+++ /dev/null
@@ -1,35 +0,0 @@
---- src/Pynest2D.sip.orig	2020-12-24 22:47:54 UTC
-+++ src/Pynest2D.sip
-@@ -49,7 +49,7 @@ using namespace placers;
-         for(size_t i = 0; i < size; ++i)
-         {
-             Item* item = sipCpp->at(0);
--            PyObject* python_item = sipConvertFromInstance(item, sipClass_Item, sipTransferObj);
-+            PyObject* python_item = sipConvertFromType(item, sipType_Item, sipTransferObj);
-             if(!python_item)
-             {
-                 Py_DECREF(result_list);
-@@ -74,20 +74,20 @@ using namespace placers;
-         PyObject* list_item;
-         while(list_item = PyIter_Next(iterator))
-         {
--            if(!sipCanConvertToInstance(list_item, sipClass_Item, SIP_NOT_NONE))
-+            if(!sipCanConvertToType(list_item, sipType_Item, SIP_NOT_NONE))
-             {
-                 PyErr_Format(PyExc_TypeError, "Object in iterable cannot be converted to a libnest2d Item.");
-                 *sipIsErr = 1;
-                 break;
-             }
-             int state;
--            Item* item = reinterpret_cast<Item*>(sipConvertToInstance(list_item, sipClass_Item, 0, SIP_NOT_NONE, &state, sipIsErr));
-+            Item* item = reinterpret_cast<Item*>(sipConvertToType(list_item, sipType_Item, 0, SIP_NOT_NONE, &state, sipIsErr));
-             if(!*sipIsErr)
-             {
-                 storage_vector->push_back(item);
-             }
- 
--            sipReleaseInstance(item, sipClass_Item, state);
-+            sipReleaseType(item, sipType_Item, state);
-             Py_DECREF(list_item);
-         }
-