new_contents: import os
  from conans import ConanFile, CMake, tools
  
  
  class CnCborConan(ConanFile):
      name = "cn-cbor"
      version = "20200227"
      license = "BSD"
      url = "https://github.com/cose-wg/cn-cbor"
      description = """A constrained node implementation of CBOR in C"""
      topics = ("cn-cbor")
      settings = "os", "compiler", "build_type", "arch"
      options = {
          "shared": [True, False],
      }
      default_options = {
          "shared": False,
      }
      generators = "cmake"
  
      _cmake = None
  
      @property
      def _source_subfolder(self):
          return "source_subfolder"
  
      @property
      def _build_subfolder(self):
          return "build_subfolder"
  
      def source(self):
          self.run(
              "git clone -b complete git@github.com:gocarlos/cn-cbor.git")
          os.rename("cn-cbor", self._source_subfolder)
  
      def configure(self):
          del self.settings.compiler.libcxx
          del self.settings.compiler.cppstd
  
      def _configure_cmake(self):
          if not self._cmake:
              self._cmake = CMake(self)
          self._cmake.definitions["build_tests"] = False
          self._cmake.definitions["build_docs"] = False
          self._cmake.definitions["coveralls"] = False
          self._cmake.configure(
              source_folder=self._source_subfolder, build_folder=self._build_subfolder)
  
          return self._cmake
  
      def build(self):
          cmake = self._configure_cmake()
          cmake.build()
  
      def package(self):
          cmake = self._configure_cmake()
          cmake.install()
  
      def package_info(self):
          self.cpp_info.libs = ["cn-cbor"]
          self.cpp_info.name = "cn-cbor"
  
subject: add conanfile