Function update_package_reason 

pub fn update_package_reason(
    manifest: &InstallManifest,
    new_reason: &InstallReason,
) -> Result<(), Error>

Updates the installation reason for a package in the lockfile.

Errors

Returns an error if:

• The lockfile cannot be read or written.
• The lockfile mutex is poisoned.
• The package is not found in the lockfile.