diff --git a/scripts/create_baseline_stubs.py b/scripts/create_baseline_stubs.py
index 3766266adc91..2aab6aea5710 100755
--- a/scripts/create_baseline_stubs.py
+++ b/scripts/create_baseline_stubs.py
@@ -46,6 +46,8 @@ def get_installed_package_info(project: str) -> tuple[str, str] | None:
 
     Return (normalized project name, installed version) if successful.
     """
+    # Not using "uv pip freeze" because if this is run from a global Python,
+    # it'll mistakenly list the .venv's packages.
     r = subprocess.run(["pip", "freeze"], capture_output=True, text=True, check=True)
     return search_pip_freeze_output(project, r.stdout)
 
@@ -220,7 +222,7 @@ def main() -> None:
     if info is None:
         print(f'Error: "{project}" is not installed', file=sys.stderr)
         print(file=sys.stderr)
-        print(f'Suggestion: Run "python3 -m pip install {project}" and try again', file=sys.stderr)
+        print(f"Suggestion: Run `{sys.executable} -m pip install {project}` and try again", file=sys.stderr)
         sys.exit(1)
     project, version = info
 
diff --git a/scripts/install_all_third_party_dependencies.py b/scripts/install_all_third_party_dependencies.py
index a11238da8199..ca1b7075589f 100644
--- a/scripts/install_all_third_party_dependencies.py
+++ b/scripts/install_all_third_party_dependencies.py
@@ -3,11 +3,13 @@
 
 from ts_utils.requirements import get_external_stub_requirements
 
-use_uv = "--uv" in sys.argv
-if use_uv:
-    pip_command = ["uv", "pip", "install"]
-else:
-    pip_command = ["pip", "install"]
-
-requirements = get_external_stub_requirements()
-subprocess.check_call(pip_command + [str(requirement) for requirement in requirements])
+
+def main() -> None:
+    requirements = get_external_stub_requirements()
+    # By forwarding arguments, we naturally allow non-venv (system installs)
+    # by letting the script's user follow uv's own helpful hint of passing the `--system` flag.
+    subprocess.check_call(["uv", "pip", "install", *sys.argv[1:], *[str(requirement) for requirement in requirements]])
+
+
+if __name__ == "__main__":
+    main()
diff --git a/tests/mypy_test.py b/tests/mypy_test.py
index b5e91bd8af58..f292b47f4e6c 100755
--- a/tests/mypy_test.py
+++ b/tests/mypy_test.py
@@ -507,7 +507,7 @@ def setup_virtual_environments(distributions: dict[str, PackageDependencies], ar
         print(colored(f"took {venv_elapsed_time:.2f} seconds", "blue"))
 
     # STAGE 3: For each {virtual_environment: requirements_set} pairing,
-    # `pip install` the requirements set into the virtual environment
+    # `uv pip install` the requirements set into the virtual environment
     pip_start_time = time.perf_counter()
 
     # Limit workers to 10 at a time, since this makes network requests
diff --git a/tests/runtests.py b/tests/runtests.py
index e0aad9e95bd2..47be0830ba67 100755
--- a/tests/runtests.py
+++ b/tests/runtests.py
@@ -124,7 +124,12 @@ def main() -> None:
         print("\nRunning pytype...")
         pytype_result = subprocess.run([sys.executable, "tests/pytype_test.py", path])
     else:
-        print(colored("\nSkipping pytype on Windows. You need to install it first: `pip install pytype`.", "yellow"))
+        print(
+            colored(
+                f"\nSkipping pytype on Windows. You need to install it first: `{sys.executable} -m pip install pytype` .",
+                "yellow",
+            )
+        )
 
     cases_path = test_cases_path(stub if folder == "stubs" else "stdlib")
     if not cases_path.exists():