Function eligible 

pub fn eligible(
    root: &Utf8Path,
    since: Option<&str>,
    paths: &[String],
) -> Result<Verdict, RkError>

Whether the commits of <since>..HEAD, or of the whole history with no release tag, that touched paths hold a releasing commit.

paths are the eligibility inputs: the packed files of both revisions, and the declaration of what ships where its change altered the packed set. The caller has already found the packed change.

Errors

git’s failure to read the history.