ConanException: Package require 'qt' not used in components requires - qt

Question

I've created a project which has two targets, core.dll and runner.exe.
Core.dll depends on Qt5::Core.
Runner.exe depends on core.dll.
Also I've created a conan recipe conanfile.py.
I defined qt in requirements:
def requirements(self):
self.requires("qt/e5.12.4#mikhail/testing", private=False)
In package_info I use components:
def package_info(self):
self.cpp_info.components["core"].libs = ["core"]
self.cpp_info.components["core"].requires = ["qt"]
self.cpp_info.components["runner"].requires = ["core"]
On build I have error:
File
"C:\Users\user\AppData\Roaming\Python\Python37\site-packages\conans\client\installer.py",
line 571, in _call_package_info
raise ConanException("%s package_info(): %s" % (str(conanfile), e)) conans.errors.ConanException: lexer/1.0.0#mikhail/testing
package_info(): Package require 'qt' not used in components requires
I assume I miss some detail. I would appreciate any advice or reference to read about.
conanfile.py
from conans import ConanFile, CMake, tools
import os.path
class LexerConan(ConanFile):
name = "lexer"
license = "Proprietary"
author = "Mikhail"
topics = ("lexer")
version = "1.0.0"
settings = {
"os": ["Windows"],
"compiler": None,
"build_type": None,
"arch": None
}
options = {"shared": [True, False]}
default_options = {
"shared": False
}
generators = "cmake_paths"
exports_sources = "*"
no_copy_source = True
def build_requirements(self):
self.build_requires("cmake-toolkit/1.0.0#mikhail/stable")
self.build_requires("cmake/3.17.1")
def requirements(self):
self.requires("qt/e5.12.4#mikhail/testing", private=False)
def build(self):
cmake = CMake(self)
cmake.definitions["VERSION"] = self.version
cmake.definitions["CMAKE_TOOLCHAIN_FILE"] = os.path.join(self.build_folder, "conan_paths.cmake")
cmake.configure()
cmake.build()
def package(self):
cmake = CMake(self)
cmake.configure()
cmake.install()
def package_info(self): #ERROR ConanException: Package require 'qt' not used in components requires
self.cpp_info.components["core"].libs = ["core"]
self.cpp_info.components["core"].requires = ["qt"]
self.cpp_info.components["runner"].requires = ["core"]
If you need more details I created a reference project on GitHub

Answer 1

I had to use namespace qt::qt.
self.cpp_info.components["core"].requires = ["qt::qt"]