fix(generator): remove --no-build-isolation and specify package-data in pyproject.toml

Author: hebaalazzeh

packages/gapic-generator/noxfile.py

@@ -392,7 +392,7 @@ def showcase_library(
             # Install the library without a constraints file.
             session.install("-e", tmp_dir)
 
-        session.install("-e", "../google-api-core", "--no-build-isolation", "--no-deps")
+        session.install("-e", "../google-api-core", "--no-deps")
 
         yield tmp_dir
 

packages/google-api-core/pyproject.toml

@@ -78,6 +78,7 @@ version = { attr = "google.api_core.version.__version__" }
 include = ["google*"]
 
 [tool.setuptools.package-data]
+"google.api_core" = ["py.typed"]
 "*" = ["py.typed"]
 
 [tool.mypy]