Nix/doc/manual/rl-next/ifd-eval-store.md

synopsis	prs
import-from-derivation builds the derivation in the build store	9661

When using --eval-store, importing from a derivation will now result in the derivation being built on the build store, i.e. the store specified in the store Nix option.

Because the resulting Nix expression must be copied back to the eval store in order to be imported, this requires the eval store to trust the build store's signatures.