requirements.in:

requests

$ uv pip compile requirements.in -o reqs1.txt -o reqs2.txt
error: the argument '--output-file <OUTPUT_FILE>' cannot be used multiple times
$ uv --version
uv 0.1.37
$ uname
Linux

I'm requesting that instead, the above command write output to (only) reqs2.txt, the latest instance of -o/--output-file on the command line. This is useful when using shell aliases or functions to wrap uv, when you specify a "default" output file in the alias or function, while allowing any invocation to easily override that default by specifying the option again, on the command line.

That's how pip-tools behaves, and I make use of that behavior.