fix: log base directory to startup messages when --base-directory is used

[octo-patch]

Fixes #13363

Problem

When --base-directory is passed at startup, ComfyUI logs messages like:

Setting output directory to: ...
Setting input directory to: ...
Setting user directory to: ...

But it never logs a message for the base directory itself, making it hard to confirm that --base-directory was applied correctly.

Solution

Add a Setting base directory to: ... log message in apply_custom_paths(), consistent with how other directory overrides are reported. The folder_paths.base_path value (already computed at import time) is used since it reflects the resolved absolute path.

Testing

Run ComfyUI with --base-directory /some/path and verify the startup output includes:

Setting base directory to: /some/path

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• main.py

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📝 Walkthrough

Walkthrough

This pull request adds logging functionality for the --base-directory CLI argument in main.py. When the argument is provided, the code logs the base directory path within the apply_custom_paths() function. The implementation adds 4 lines without modifying existing control flow or path-setting logic, and introduces no changes to public API declarations.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The PR title accurately describes the main change: adding a log message for the base directory when --base-directory is used.
Description check	✅ Passed	The description clearly explains the problem, solution, and testing steps, all directly related to the changeset.
Linked Issues check	✅ Passed	The PR directly addresses issue #13363 by adding the missing base directory log message in apply_custom_paths() using folder_paths.base_path.
Out of Scope Changes check	✅ Passed	The change is narrowly scoped to adding a single log message for base directory reporting, which is entirely within the requirements of issue #13363.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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[alexisrolland]

I think this should be done folder_paths.py where the argument is used:

# --base-directory - Resets all default paths configured in folder_paths with a new base path
if args.base_directory:
    base_path = os.path.abspath(args.base_directory)
else:
    base_path = os.path.dirname(os.path.realpath(__file__))

models_dir = os.path.join(base_path, "models")

[alexisrolland]

Actually this is fine, we can't add the log in folder_paths.py because it is imported before the log handler.

I tested this and it's fine.