Struct InstallPolicy 

pub struct InstallPolicy<'a> {
    pub now: &'a str,
    pub staleness_threshold_days: u32,
    pub platform: &'a str,
    pub index: Option<IndexPolicy<'a>>,
}

Policy inputs the caller supplies; time is data, not something the pipeline samples.

Fields

now: &'a str

RFC 3339 “now” for the staleness verdict.

staleness_threshold_days: u32

platform: &'a str

Target platform (a triple) entries must match. Entries without a platform annotation are platform-independent (REQ-PLATFORM-001).

index: Option<IndexPolicy<'a>>

The realm’s line-index obligation (REQ-INDEXAUTH-001). None where the pin names no realm — there is then no root that could have signed an index, so there is nothing to check.