Function evaluate_many 

pub fn evaluate_many(
    lcov_texts: &[&str],
    manifest_path: Option<&Path>,
    gated_packages: &[String],
) -> Result<EvaluatedReport, CoverageGateError>

Evaluate one or more cargo-llvm-cov lcov tracefiles against the workspace anchored at manifest_path and return the resolved EvaluatedReport.

The tracefiles are merged at the line level before evaluation (per-line counts summed, line sets combined), so passing the --all-features and --no-default-features exports yields the same per-package line coverage as a single merged report — without a platform-specific lcov merger. An empty slice is treated as an empty report. Packages with positive thresholds then report NO DATA, which rolls the overall result up to Verdict::ConfigError (process exit code 2). Packages with zero thresholds pass, while expect-no-coverable-lines packages report EMPTY and pass.

gated_packages restricts the operation to a named subset; when empty, every workspace member is in scope.

Errors

Returns a CoverageGateError under the same conditions as evaluate; additionally, any tracefile that fails to parse aborts the merge.