nix3-store-copy-log(1)

📦
version 2.35.3 · 13 versions
, in fedora 44

nix store copy-log 💅

ok bestie so this is from the nix3-store-copy-log(1) manual, General Commands Manual section, and it's giving extremely useful, we love that for us ✨

⚠️ Warning This program is experimental and its interface is subject to change. No cap, they might switch it up on us, so don't get too attached to exact flags, okay? 😭

✨ Name ✨

nix store copy-log — copy build logs between Nix stores 🦋

🎀 Synopsis 🎀

nix store copy-log [option…] installables…

🌸 Examples 🌸

# nix store copy-log --from https://cache.nixos.org --eval-store auto nixpkgs#hello

You can verify that the log is available locally:

# nix log --substituters '' nixpkgs#hello

(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 --to ssh-ng://machine /nix/store/yaxvykk956vdrwrx9cxyw44mpqr1ml7i-glibc-2.33-59.drv

💖 Description 💖

nix store copy-log copies build logs between two Nix stores, periodt. The source store is specified using --from and the destination using --to. If one of these is omitted, it defaults to the local store. Literally that easy 💅

👑 Options 👑

  • --from store-uri — URL of the source Nix store.
  • --stdin — Read installables from the standard input. No default installable applied.
  • --to store-uri — URL of the destination Nix store.

🌈 Common evaluation options 🌈

  • --arg name expr — Pass the value expr as the argument name to Nix functions.
  • --arg-from-file name path — Pass the contents of file path as the argument name to Nix functions.
  • --arg-from-stdin name — Pass the contents of stdin as the argument name to Nix functions.
  • --argstr name string — Pass the string string as the argument name to Nix functions.
  • --debugger — Start an interactive environment if evaluation fails.
  • --eval-store store-url — The URL of the Nix store to use for evaluation, i.e. to store derivations (.drv files) and inputs referenced by them.
  • --impure — Allow access to mutable paths and repositories.
  • --include / -I path — Add path to search path entries used to resolve lookup paths.

This option may be given multiple times.

Paths added through -I take precedence over the nix-path configuration setting and the NIX_PATH environment variable.

  • --override-flake original-ref resolved-ref — Override the flake registries, redirecting original-ref to resolved-ref.
  • --commit-lock-file — Commit changes to the flake's lock file.
  • --inputs-from flake-url — Use the inputs of the specified flake as registry entries.
  • --no-registries — Don't allow lookups in the flake registries.
DEPRECATED — Use --no-use-registries instead. 🙈
  • --no-update-lock-file — Do not allow any updates to the flake's lock file.
  • --no-write-lock-file — Do not write the flake's newly generated lock file.
  • --output-lock-file flake-lock-path — Write the given lock file instead of flake.lock within the top-level flake.
  • --override-input input-path flake-url — Override a specific flake input (e.g. dwarffs/nixpkgs). The input path must not be empty. This implies --no-write-lock-file.
  • --recreate-lock-file — Recreate the flake's lock file from scratch.
DEPRECATED — Use nix flake update instead. 😭
  • --reference-lock-file flake-lock-path — Read the given lock file instead of flake.lock within the top-level flake.
  • --update-input input-path — Update a specific flake input (ignoring its previous entry in the lock file).
DEPRECATED — Use nix flake update instead. 💀
  • --debug — Set the logging verbosity level to 'debug'.
  • --log-format format — Set the format of log output; one of raw, internal-json, bar or bar-with-logs.
  • --print-build-logs / -L — Print full build logs on standard error.
  • --quiet — Decrease the logging verbosity level.
  • --verbose / -v — Increase the logging verbosity level.

🍓 Miscellaneous global options 🍓

  • --help — Show usage information.
  • --offline — Disable substituters and consider all previously downloaded files up-to-date.
  • --option name value — Set the Nix configuration setting name to value (overriding nix.conf).
  • --refresh — Consider all previously downloaded files out-of-date.
  • --repair — During evaluation, rewrite missing or corrupted files in the Nix store. During building, rebuild missing or corrupted store paths.
  • --version — Show version information.

🦋 Options that change the interpretation of installables 🦋

  • --expr expr — Interpret installables as attribute paths relative to the Nix expression expr.
  • --file / -f file — Interpret installables as attribute paths relative to the Nix expression stored in file. If file is the character -, then a Nix expression is read from standard input. Implies --impure.
Note See man nix.conf for overriding configuration settings with command line flags. ✨

and that's the whole page bestie, you ate that 🫶 go copy some build logs, you got this 💖✨

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