update to conan 2

.gitignore

@@ -1,4 +1,6 @@
 .idea/
 cmake-build*
 test_package/build/
-test_package/CMakeUserPresets.json
+test_package/CMakeUserPresets.json
+conan_provider.cmake
+CMakeUserPresets.json

CMakeLists.txt

@@ -4,16 +4,12 @@ project(metall-ffi VERSION 0.2.4)
 include(cmake/boilerplate_init.cmake)
 boilerplate_init()
 
-OPTION(USE_CONAN "If available, use conan to retrieve dependencies." ON)
-if (IS_TOP_LEVEL AND USE_CONAN)
-    include(cmake/conan_cmake.cmake)
-    if (PROJECT_IS_TOP_LEVEL AND BUILD_TESTING)
-        set(CONAN_HYPERTRIE_WITH_TEST_DEPS "True")
-    else()
-        set(CONAN_HYPERTRIE_WITH_TEST_DEPS "False")
-    endif()
-    set(CONAN_OPTIONS "with_test_deps=${CONAN_HYPERTRIE_WITH_TEST_DEPS}")
-    install_packages_via_conan("${CMAKE_SOURCE_DIR}/conanfile.py" "${CONAN_OPTIONS};boost:header_only=True")
+if (PROJECT_IS_TOP_LEVEL)
+    set(CONAN_INSTALL_ARGS "${CONAN_INSTALL_ARGS};-o=boost/*:header_only=True")
+
+    if (BUILD_TESTING)
+        set(CONAN_INSTALL_ARGS "${CONAN_INSTALL_ARGS};-o=&:with_test_deps=True")
+    endif ()
 endif ()
 
 find_package(Metall REQUIRED)