pub fn clean(cfg: &Config, all: bool) -> Result<CleanReport, PkgError>Expand description
Remove cached packages.
With all = true, removes the entire <pkg_dir>/cache directory.
Otherwise reads the lockfile, collects the set of in-use SHAs, and
recursively deletes any 40-hex SHA directory under <cache>/git/ that
is not in that set. A missing lockfile is reported, not an error.
Never touches <pkg_dir>/vendored; dangling symlinks there are
repaired by the next install.