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Add dedicated warning for empty stdin (#9256)

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## Summary

I ran into this in practice:

![Screenshot 2024-11-19 at 4 20
37 PM](https://github.com/user-attachments/assets/d89aa9f1-828a-492e-af5a-3434e277580e)
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Charlie Marsh 2024-11-19 17:52:41 -05:00 • committed by GitHub
parent 9fb7f81738
commit f4799d2346
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1 changed files with 8 additions and 4 deletions
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12
crates/uv-requirements-txt/src/lib.rs
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@ -220,10 +220,14 @@ impl RequirementsTxt {
error: err,
})?;
if data == Self::default() {
warn_user!(
"Requirements file {} does not contain any dependencies",
requirements_txt.user_display()
);
if requirements_txt == Path::new("-") {
warn_user!("No dependencies found in stdin");
} else {
warn_user!(
"Requirements file {} does not contain any dependencies",
requirements_txt.user_display()
);
}
}
Ok(data)