Skip to content

fix: route CLI error tracebacks to stderr instead of stdout #255

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Sep 5, 2025
Merged

fix: route CLI error tracebacks to stderr instead of stdout #255

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
7179309
fix: separate console streams for proper stdout/stderr routing
pyq Sep 4, 2025
01aefba
feat: install Rich's global exception handler for improved error repo…
pyq Sep 4, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
14 changes: 10 additions & 4 deletions src/mcpm/cli.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@

from rich.console import Console
from rich.traceback import Traceback
from rich.traceback import install as install_rich_traceback

from mcpm.clients.client_config import ClientConfigManager
from mcpm.commands import (
Expand All @@ -31,12 +32,17 @@
from mcpm.utils.logging_config import setup_logging
from mcpm.utils.rich_click_config import click, get_header_text

console = Console()
console = Console() # stdout for regular CLI output
err_console = Console(stderr=True) # stderr for errors/tracebacks
client_config_manager = ClientConfigManager()

# Setup Rich logging early - this runs when the module is imported
setup_logging()

# Install Rich's global exception handler to use stderr instead of stdout
# This prevents Rich/rich-gradient from routing tracebacks to stdout
install_rich_traceback(console=err_console, show_locals=True)

# Custom context settings to handle main command help specially
CONTEXT_SETTINGS: Dict[str, Any] = dict(help_option_names=[])

Expand All @@ -53,9 +59,9 @@ def wrapper(*args, **kwargs):
try:
return func(*args, **kwargs)
except Exception:
console.print(Traceback(show_locals=True))
console.print("[bold red]An unexpected error occurred.[/bold red]")
console.print(
err_console.print(Traceback(show_locals=True))
err_console.print("[bold red]An unexpected error occurred.[/bold red]")
err_console.print(
"Please report this issue on our GitHub repository: "
"[link=https://github.com/pathintegral-institute/mcpm.sh/issues]https://github.com/pathintegral-institute/mcpm.sh/issues[/link]"
)
Expand Down