Bugs in the activate_this.py script created by uv venv

[pfmoore]

If I do uv venv, the file .venv/Scripts/activate_this.py contains errors:

Too many closing parentheses:

    msg = "You must use exec(open(this_file).read(), {'__file__': this_file}))"

Invalid backslash escapes (this is on Windows):

for lib in "..\Lib\site-packages".split(os.pathsep):

[charliermarsh]

Thanks, we vendored these from virtualenv and looks like the first one at least was fixed: pypa/virtualenv#2651

[charliermarsh]

The second looks like our bug.

[AlexWaygood]

There's some other weirdness as well.

uv/crates/uv-virtualenv/src/activator/activate_this.py

Line 47 in 1089abd

os.environ["VIRTUAL_ENV_PROMPT"] = "" or os.path.basename(base) # noqa: SIM222

Isn't that just exactly equivalent to this?

os.environ["VIRTUAL_ENV_PROMPT"] = os.path.basename(base)

uv/crates/uv-virtualenv/src/activator/activate_this.py

Lines 53 to 54 in 1089abd

	site.addsitedir(path.decode("utf-8") if "" else path)
	sys.path[:] = sys.path[prev_length:] + sys.path[0:prev_length]

Isn't that exactly equivalent to this?

     site.addsitedir(path) 
 sys.path[:] = sys.path[prev_length:] + sys.path[:prev_length] 

[konstin]

I think some parts were lost when copying the upstream (https://github.com/pypa/virtualenv/blob/01cc6fbeb9f6e4a261d3bcf292801d5959525870/src/virtualenv/activation/python/activate_this.py), i'll give this a proper a look on monday.