"solara run" exits with code 0 when exited with an exception

This is a minimum example to reproduce the problem.

# pages/index.py

import solara

raise Exception("Error")

@solara.component
def Page():
    solara.Text("Hello World!")

The reason why this is a problem is that it's common to declare global constants with os.environ["KEY"] at the top of Python files.

We have a script that runs solara run in a subprocess and checks its exit code. But it doesn't work correctly because it always exits with code 0.

Expected Behavior

solara process exits with a non-zero exit code

Current Behavior

solara process exits with exit code 0

Steps to Reproduce the Problem

• Create pages/index.py with the example above
• Run solara

solara run pages

• Check exit code

echo $?

Specifications

• Solara Version: 1.44.0
• Platform: macOS
• Affected Python Versions: 3.12.4

Start by reproducing the issue with the supplied pages/index.py example and run solara run pages, then inspect the entry point handling that command's subprocess or server exit status. Done means an exception during module loading causes the Solara process to return a non-zero exit code, verified with echo $?.