Detect if a script is called with uv run

[samuelcolvin]

I'd like to know if my script was called with uv run, but there doesn't seem to be an obvious way to tell.

I suggest you set an extra environment variable (e.g. UV=1) which the process can use to check if it was called that way.

(My use case if it matters is that I'm printing instructions on how to run other scripts, and I'd like to show "Run with uv run -m ..." or "Run with python -m ...")

[zanieb]

Seems fine to me, though I'm a little wary of people keying behavior off of executing in a uv context in general.

[charliermarsh]

This could also be helpful for the infinitely-recursive shebang @zanieb...

[zanieb]

True I basically suggested this as a solution. Though the problem there is we can't tell if the recursion is intentional or not without capturing more information.

[samuelcolvin]

Your could increment the count in the env car, so UV=1, UV=2 etc.

[samuelcolvin]

Fwiw, (maybe supports @zanieb's point) I no longer need this right now. Although I think adding the env var is still a good idea.

[konstin]

This sounds like something that would fit nicely into the sys module, similar sys.orig_argv

[zanieb]

Closed in #11326