nix3-store-copy-log(1)      General Commands Manual     nix3-store-copy-log(1)


              Warning
              This program is experimental and its interface is subject to
              change.

Name
       nix store copy-log - copy build logs between Nix stores

Synopsis
       nix store copy-log [option<?>] installables<?>

Examples
       o  To copy the build log of the hello package from
          https://cache.nixos.org to the local store:

       # 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.)

       o  To copy the log for a specific store derivation via SSH:

       # nix store copy-log --to ssh-ng://machine /nix/store/ilgm50plpmcgjhcp33z6n4qbnpqfhxym-glibc-2.33-59.drv

Description
       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.

Options
       o  --from store-uri

          URL of the source Nix store.

       o  --stdin

          Read installables from the standard input. No default installable
          applied.

       o  --to store-uri

          URL of the destination Nix store.

   Common evaluation options
       o  --arg name expr

          Pass the value expr as the argument name to Nix functions.

       o  --arg-from-file name path

          Pass the contents of file path as the argument name to Nix
          functions.

       o  --arg-from-stdin name

          Pass the contents of stdin as the argument name to Nix functions.

       o  --argstr name string

          Pass the string string as the argument name to Nix functions.

       o  --debugger

          Start an interactive environment if evaluation fails.

       o  --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.

       o  --impure

          Allow access to mutable paths and repositories.

       o  --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.

       o  --override-flake original-ref resolved-ref

          Override the flake registries, redirecting original-ref to resolved-
          ref.

   Common flake-related options
       o  --commit-lock-file

          Commit changes to the flake's lock file.

       o  --inputs-from flake-url

          Use the inputs of the specified flake as registry entries.

       o  --no-registries

          Don't allow lookups in the flake registries.

                 DEPRECATED

                 Use --no-use-registries instead.

       o  --no-update-lock-file

          Do not allow any updates to the flake's lock file.

       o  --no-write-lock-file

          Do not write the flake's newly generated lock file.

       o  --output-lock-file flake-lock-path

          Write the given lock file instead of flake.lock within the top-level
          flake.

       o  --override-input input-path flake-url

          Override a specific flake input (e.g. dwarffs/nixpkgs). This implies
          --no-write-lock-file.

       o  --recreate-lock-file

          Recreate the flake's lock file from scratch.

                 DEPRECATED

                 Use nix flake update instead.

       o  --reference-lock-file flake-lock-path

          Read the given lock file instead of flake.lock within the top-level
          flake.

       o  --update-input input-path

          Update a specific flake input (ignoring its previous entry in the
          lock file).

                 DEPRECATED

                 Use nix flake update instead.

   Logging-related options
       o  --debug

          Set the logging verbosity level to `debug'.

       o  --log-format format

          Set the format of log output; one of raw, internal-json, bar or bar-
          with-logs.

       o  --print-build-logs / -L

          Print full build logs on standard error.

       o  --quiet

          Decrease the logging verbosity level.

       o  --verbose / -v

          Increase the logging verbosity level.

   Miscellaneous global options
       o  --help

          Show usage information.

       o  --offline

          Disable substituters and consider all previously downloaded files
          up-to-date.

       o  --option name value

          Set the Nix configuration setting name to value (overriding
          nix.conf).

       o  --refresh

          Consider all previously downloaded files out-of-date.

       o  --repair

          During evaluation, rewrite missing or corrupted files in the Nix
          store. During building, rebuild missing or corrupted store paths.

       o  --version

          Show version information.

   Options that change the interpretation of installables
       o  --expr expr

          Interpret installables as attribute paths relative to the Nix
          expression expr.

       o  --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 will be read from standard input. Implies --impure.

          Note

          See man nix.conf for overriding configuration settings with command
          line flags.

                                                        nix3-store-copy-log(1)