set_current_dir called with file path instead of directory in find_nearset_pkg_name causes OS error 267 on Windows

[GuyFromTheInternet]

When using cargo packager -c Packager.toml -f nsis, the CLI fails with:

ERROR I/O Error (\?\D:\project\Packager.toml): The folder name is incorrectly specified. (os error 267)
OS error 267 is ERROR_DIRECTORY on Windows - "The directory name is invalid."

In crates/packager/src/cli/config.rs, the function find_nearset_pkg_name receives a path to the config file but
attempts to use it as a directory:

fn find_nearset_pkg_name(path: &Path) -> Result<Option> {
// ...
let cwd = std::env::current_dir()?;
std::env::set_current_dir(path).map_err(|e| Error::IoWithPath(path.to_path_buf(), e))?; // <-- BUG: path is a
FILE, not a directory
// ...
}

This function is called from parse_config_file at line 99:
let name = find_nearset_pkg_name(path)?;
Where path is the full path to the config file (e.g., D:\project\Packager.toml), not its parent directory.

Suggested Fix:

Change line 56 from:

std::env::set_current_dir(path).map_err(|e| Error::IoWithPath(path.to_path_buf(), e))?;

To:

let dir = path.parent().unwrap_or(Path::new("."));
std::env::set_current_dir(dir).map_err(|e| Error::IoWithPath(dir.to_path_buf(), e))?;

Environment

• cargo-packager: 0.11.8
• OS: Windows 11