Nix 2.29.1
Nix, the purely functional package manager; unstable internal interfaces
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R""(
To copy the build log of the hello package from https://cache.nixos.org to the local store:
You can verify that the log is available locally:
(The flag ‘--substituters ’' avoids querying https://cache.nixos.org` for the log.)
To copy the log for a specific store derivation via SSH:
nix store copy-log copies build logs between two Nix stores. The source store is specified using --from and the destination using --to. If one of these is omitted, it defaults to the local store.
)""