Add --threads argument to pyright cli (#12688)

.github/workflows/meta_tests.yml

@@ -61,6 +61,7 @@ jobs:
           version: PATH
           python-platform: ${{ matrix.python-platform }}
           python-version: "3.9" # Oldest version supported for running scripts and tests
+          extra-args: --threads
           project: ./pyrightconfig.scripts_and_tests.json
   stubsabot-dry-run:
     name: Stubsabot dry run

.github/workflows/tests.yml

@@ -145,6 +145,7 @@ jobs:
           version: PATH
           python-platform: ${{ matrix.python-platform }}
           python-version: ${{ matrix.python-version }}
+          extra-args: --threads
           annotate: ${{ matrix.python-version == '3.12' && matrix.python-platform == 'Linux' }} # Having each job create the same comment is too noisy.
       - name: Run pyright with stricter settings on some of the stubs
         uses: jakebailey/pyright-action@v2
@@ -152,6 +153,7 @@ jobs:
           version: PATH
           python-platform: ${{ matrix.python-platform }}
           python-version: ${{ matrix.python-version }}
+          extra-args: --threads
           annotate: ${{ matrix.python-version == '3.12' && matrix.python-platform == 'Linux' }} # Having each job create the same comment is too noisy.
           project: ./pyrightconfig.stricter.json
       - name: Run pyright on the test cases
@@ -160,6 +162,7 @@ jobs:
           version: PATH
           python-platform: ${{ matrix.python-platform }}
           python-version: ${{ matrix.python-version }}
+          extra-args: --threads
           annotate: ${{ matrix.python-version == '3.12' && matrix.python-platform == 'Linux' }} # Having each job create the same comment is too noisy.
           project: ./pyrightconfig.testcases.json
 

tests/pyright_test.py

@@ -37,7 +37,7 @@ def main() -> None:
     # version installed into the virtual environment, due to failures on some
     # platforms. https://github.com/python/typeshed/issues/11614
     os.environ["PYRIGHT_PYTHON_FORCE_VERSION"] = pyright_version
-    command = [npx, f"pyright@{pyright_version}"] + sys.argv[1:]
+    command = [npx, f"pyright@{pyright_version}"] + sys.argv[1:] + ["--threads"]
     print_command(command)
 
     ret = subprocess.run(command).returncode