pub const BUNDLED_GLIBC: Version;Expand description
The glibc our bundled header tree is derived from.
A fact about the tree and not a choice. sysroots/manifest in tamnd/rucc-cross pins the glibc
source by version and hash, the tree is produced from that source, and this is that version. It
moves when the pin moves and the two are checked against each other by the producer.