support for python_requires in local-recipes-index (#16420)

* support for python_requires in local-recipes-index

* wip

conans/client/rest_client_local_recipe_index.py

@@ -143,17 +143,16 @@ def _export_recipe(self, ref):
         sys.stderr = StringIO()
         try:
             global_conf = ConfDefinition()
-            new_ref, _ = cmd_export(self._app, global_conf, conanfile_path,
-                                    ref.name, str(ref.version), None, None)
+            new_ref, _ = cmd_export(self._app, global_conf, conanfile_path, ref.name,
+                                    str(ref.version), None, None, remotes=[self._remote])
         except Exception as e:
             raise ConanException(f"Error while exporting recipe from remote: {self._remote.name}\n"
                                  f"{str(e)}")
         finally:
-            export_stderr = sys.stderr.getvalue()
+            export_err = sys.stderr.getvalue()
             sys.stderr = original_stderr
-            ConanOutput().debug(f"Internal export for {ref}:\n"
-                                f"{textwrap.indent(export_stderr, '    ')}")
-
+            ConanOutput(scope="local-recipes-index").debug(f"Internal export for {ref}:\n"
+                                                           f"{textwrap.indent(export_err, '    ')}")
         return new_ref
 
     @staticmethod

test/integration/remote/test_local_recipes_index.py

@@ -331,3 +331,32 @@ class Zlib(ConanFile):
         c.run(f"remote add local '{folder}'")
         c.run("install --requires=zlib/[*] --build missing", assert_error=True)
         assert "NameError: name 'ConanFile' is not defined" in c.out
+
+
+class TestPythonRequires:
+    @pytest.fixture(scope="class")
+    def c3i_pyrequires_folder(self):
+        folder = temp_folder()
+        recipes_folder = os.path.join(folder, "recipes")
+        config = textwrap.dedent("""
+            versions:
+              "1.0":
+                folder: all
+            """)
+        pkg = str(GenConanfile("pkg").with_python_requires("pyreq/1.0"))
+        save_files(recipes_folder,
+                   {"pkg/config.yml": config,
+                    "pkg/all/conanfile.py": pkg,
+                    "pyreq/config.yml": config,
+                    "pyreq/all/conanfile.py": str(GenConanfile("pyreq", "1.0"))})
+        return folder
+
+    def test_install(self, c3i_pyrequires_folder):
+        c = TestClient(light=True)
+        c.run(f"remote add local '{c3i_pyrequires_folder}'")
+        c.run("list * -r=local")
+        assert "pyreq/1.0" in c.out
+        assert "pkg/1.0" in c.out
+        c.run("install --requires=pkg/1.0 --build missing -vvv")
+        assert "pyreq/1.0#a0d63ca853edefa33582a24a1bb3c75f - Downloaded (local)" in c.out
+        assert "pkg/1.0: Created package" in c.out