ci: fixed setting Ninja as a default generator for Conan

.github/workflows/ci-test-package-cmake.yml

@@ -84,6 +84,7 @@ jobs:
       CC: ${{ matrix.config.compiler.cc }}
       CXX: ${{ matrix.config.compiler.cxx }}
       CMAKE_GENERATOR: Ninja
+      CONAN_CMAKE_GENERATOR: Ninja
 
     steps:
       - uses: actions/checkout@v2

.github/workflows/codeql-analysis.yml

@@ -80,6 +80,8 @@ jobs:
         python-version: '3.8'
     - name: Conan build
       if: matrix.language == 'cpp'
+      env:
+        CONAN_CMAKE_GENERATOR: Ninja
       run: |
         pip install -U conan
         conan config init

.github/workflows/documentation.yml

@@ -40,6 +40,7 @@ env:
   CC: gcc-10
   CXX: g++-10
   CMAKE_GENERATOR: Ninja
+  CONAN_CMAKE_GENERATOR: Ninja
 
 jobs:
   docs:

conanfile.py

@@ -102,7 +102,7 @@ class UnitsConan(ConanFile):
     #         del self.options.build_docs
 
     def generate(self):
-        tc = CMakeToolchain(self)
+        tc = CMakeToolchain(self, generator=os.getenv("CONAN_CMAKE_GENERATOR"))
         tc.variables["UNITS_DOWNCAST_MODE"] = str(self.options.downcast_mode).upper()
         # if self._run_tests:  # TODO Enable this when environment is supported in the Conan toolchain
         tc.variables["UNITS_BUILD_DOCS"] = self.options.build_docs

docs/usage.rst

@@ -92,7 +92,6 @@ in *~/.conan/profiles* directory. An example profile can look as follows:
     [env]
     CC=/usr/bin/gcc-10
     CXX=/usr/bin/g++-10
-    CONAN_CMAKE_GENERATOR=Ninja
 
 .. tip::