conanfile.py

import os

from pathlib import Path
from os import path

from conan import ConanFile
from conan.errors import ConanInvalidConfiguration
from conan.tools.build import check_min_cppstd
from conan.tools.cmake import CMake, CMakeToolchain, cmake_layout, CMakeDeps
from conan.tools.env import VirtualBuildEnv, VirtualRunEnv
from conan.tools.files import copy, mkdir, update_conandata
from conan.tools.microsoft import check_min_vs, is_msvc, is_msvc_static_runtime
from conan.tools.scm import Version, Git

required_conan_version = ">=2.7.0"


class PyNest2DConan(ConanFile):
    name = "pynest2d"
    license = "LGPL-3.0"
    author = "Ultimaker B.V."
    url = "https://github.com/Ultimaker/pynest2d"
    description = "Python bindings for libnest2d"
    topics = ("conan", "cura", "prusaslicer", "nesting", "c++", "bin packaging", "python", "sip")
    settings = "os", "compiler", "build_type", "arch"
    exports = "LICENSE*"
    package_type = "library"

    python_requires = "pyprojecttoolchain/[>=0.2.0]@ultimaker/stable", "sipbuildtool/[>=0.3.0]@ultimaker/stable"

    options = {
        "shared": [True, False],
        "fPIC": [True, False],
        "py_build_requires": ["ANY"],
        "py_build_backend": ["ANY"],
    }
    default_options = {
        "shared": True,
        "fPIC": True,
        "py_build_requires": '"sip >=6, <7", "setuptools>=40.8.0", "wheel"',
        "py_build_backend": "sipbuild.api",
    }

    def set_version(self):
        if not self.version:
            self.version = self.conan_data["version"]

    def export(self):
        git = Git(self)
        update_conandata(self, {"version": self.version, "commit": git.get_commit()})

    @property
    def _min_cppstd(self):
        return 17

    @property
    def _compilers_minimum_version(self):
        return {
            "gcc": "9",
            "clang": "9",
            "apple-clang": "9",
            "msvc": "192",
            "visual_studio": "14",
        }

    def export_sources(self):
        copy(self, "CMakeLists.txt", self.recipe_folder, self.export_sources_folder)
        copy(self, "*", path.join(self.recipe_folder, "python"), path.join(self.export_sources_folder, "python"))

    def requirements(self):
        for req in self.conan_data["requirements"]:
            self.requires(req)
        self.requires("cpython/3.12.2")
        self.requires("nlopt/2.7.1")

        # Although not a direct dependency, clipper is for some reason required at link-time
        self.requires("clipper/6.4.2@ultimaker/stable")

    def validate(self):
        if self.settings.compiler.cppstd:
            check_min_cppstd(self, self._min_cppstd)
        check_min_vs(self, 192)  # TODO: remove in Conan 2.0
        if not is_msvc(self):
            minimum_version = self._compilers_minimum_version.get(str(self.settings.compiler), False)
            if minimum_version and Version(self.settings.compiler.version) < minimum_version:
                raise ConanInvalidConfiguration(
                    f"{self.ref} requires C++{self._min_cppstd}, which your compiler does not support."
                )

    def build_requirements(self):
        self.test_requires("standardprojectsettings/[>=0.2.0]@ultimaker/stable")
        self.test_requires("sipbuildtool/[>=0.3.0]@ultimaker/stable")

    def config_options(self):
        if self.settings.os == "Windows":
            del self.options.fPIC

    def configure(self):
        if self.options.shared:
            self.options.rm_safe("fPIC")

    def generate(self):
        pp = self.python_requires["pyprojecttoolchain"].module.PyProjectToolchain(self)
        pp.blocks["tool_sip_project"].values["sip_files_dir"] = str(Path("python").as_posix())
        pp.blocks["tool_sip_bindings"].values["name"] = "pynest2d"
        pp.blocks["tool_sip_metadata"].values["name"] = "pynest2d"
        print(pp.blocks["tool_sip_bindings"].context())
        pp.blocks.remove("extra_sources")
        pp.generate()

        tc = CMakeDeps(self)
        tc.generate()

        tc = CMakeToolchain(self)
        if is_msvc(self):
            tc.variables["USE_MSVC_RUNTIME_LIBRARY_DLL"] = not is_msvc_static_runtime(self)
        tc.generate()

        vb = VirtualBuildEnv(self)
        vb.generate()

        vr = VirtualRunEnv(self)
        vr.generate(scope="build")

        # Generate the Source code from SIP
        tc = self.python_requires["sipbuildtool"].module.SipBuildTool(self)
        tc.configure()
        tc.build()

    def layout(self):
        cmake_layout(self)

        if self.settings.os in ["Linux", "FreeBSD", "Macos"]:
            self.cpp.package.system_libs = ["pthread"]

        self.cpp.package.lib = ["pynest2d"]
        self.cpp.package.libdirs = ["lib"]

        self.layouts.build.runenv_info.prepend_path("PYTHONPATH", ".")
        self.layouts.package.runenv_info.prepend_path("PYTHONPATH", "lib")

    def build(self):
        cmake = CMake(self)
        cmake.configure()
        cmake.build()

    def package(self):
        copy(self, pattern="LICENSE*", dst="licenses", src=self.source_folder)
        for ext in ("*.pyi", "*.so", "*.lib", "*.a", "*.pyd", "*.dll", "*.dylib"):
            copy(self, ext, src=self.build_folder, dst=path.join(self.package_folder, "lib"), keep_path=False)

    def package_info(self):
        self.conf_info.define("user.pysavitar:pythonpath", os.path.join(self.package_folder, "lib"))