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When running ``` set UV_CACHE_DIR=%LOCALAPPDATA%\uv\cache-foo && uv venv venv ``` in windows CMD, the error would be just ``` error: The system cannot find the path specified. (os error 3) ``` The problem is that the first action in the cache dir is adding the tag, and the `cachedir` crate is using `std::fs` instead of `fs_err`. I've copied the two functions we use from the crate and changed the import from `std::fs` to `fs_err`. The new error is ``` error: failed to open file `C:\Users\Konstantin\AppData\Local\uv\cache-foo \CACHEDIR.TAG` Caused by: The system cannot find the path specified. (os error 3) ``` which correctly explains the problem. Closes #3280
42 lines
1.4 KiB
Rust
42 lines
1.4 KiB
Rust
//! Vendored from cachedir 0.3.1 to replace `std::fs` with `fs_err`.
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use std::io::Write;
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use std::{io, path};
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use cachedir::HEADER;
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/// Adds a tag to the specified `directory`.
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///
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/// Will return an error if:
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///
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/// * The `directory` exists and contains a `CACHEDIR.TAG` file, regardless of its content.
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/// * The file can't be created for any reason (the `directory` doesn't exist, permission error,
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/// can't write to the file etc.)
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pub fn add_tag<P: AsRef<path::Path>>(directory: P) -> io::Result<()> {
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let directory = directory.as_ref();
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match fs_err::OpenOptions::new()
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.write(true)
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.create_new(true)
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.open(directory.join("CACHEDIR.TAG"))
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{
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Ok(mut cachedir_tag) => cachedir_tag.write_all(HEADER),
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Err(e) => Err(e),
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}
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}
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/// Ensures the tag exists in `directory`.
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///
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/// This function considers the `CACHEDIR.TAG` file in `directory` existing, regardless of its
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/// content, as a success.
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///
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/// Will return an error if The tag file doesn't exist and can't be created for any reason
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/// (the `directory` doesn't exist, permission error, can't write to the file etc.).
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pub fn ensure_tag<P: AsRef<path::Path>>(directory: P) -> io::Result<()> {
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match add_tag(directory) {
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Err(e) => match e.kind() {
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io::ErrorKind::AlreadyExists => Ok(()),
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_ => Err(e),
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},
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other => other,
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}
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}
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