pre_commit: expose fail-fast argument for run subcommand

This patch exposes the fail-fast feature as a command-line argument for the run
subcommand, allowing to run pre-commit to stop at the first failed hook without
the need of temporarily writing it to the configuration file when temporarily
needed.

Signed-off-by: Luís Ferreira <contact@lsferreira.net>

pre_commit/commands/hook_impl.py

@@ -69,6 +69,7 @@ def _ns(
         color: bool,
         *,
         all_files: bool = False,
+        fail_fast: bool = False,
         remote_branch: Optional[str] = None,
         local_branch: Optional[str] = None,
         from_ref: Optional[str] = None,
@@ -91,6 +92,7 @@ def _ns(
         remote_url=remote_url,
         commit_msg_filename=commit_msg_filename,
         all_files=all_files,
+        fail_fast=fail_fast,
         checkout_type=checkout_type,
         is_squash_merge=is_squash_merge,
         rewrite_command=rewrite_command,

pre_commit/commands/run.py

@@ -290,7 +290,7 @@ def _run_hooks(
             verbose=args.verbose, use_color=args.color,
         )
         retval |= current_retval
-        if retval and config['fail_fast']:
+        if retval and (config['fail_fast'] or args.fail_fast):
             break
     if retval and args.show_diff_on_failure and prior_diff:
         if args.all_files: