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nix3-path-info(1) General Commands Manual nix3-path-info(1) Warning This program is experimental and its interface is subject to change. Name nix path-info - query information about store paths Synopsis nix path-info [option...] installables... Examples * Print the store path produced by nixpkgs#hello: # nix path-info nixpkgs#hello /nix/store/v5sv61sszx301i0x6xysaqzla09nksnd-hello-2.10 * Show the closure sizes of every path in the current NixOS system clo- sure, sorted by size: # nix path-info --recursive --closure-size /run/current-system | sort -nk2 /nix/store/hl5xwp9kdrd1zkm0idm3kkby9q66z404-empty 96 /nix/store/27324qvqhnxj3rncazmxc4mwy79kz8ha-nameservers 112 a| /nix/store/539jkw9a8dyry7clcv60gk6na816j7y8-etc 5783255504 /nix/store/zqamz3cz4dbzfihki2mk7a63mbkxz9xq-nixos-system-machine-20.09.20201112.3090c65 5887562256 * Show a package's closure size and all its dependencies with human read- able sizes: # nix path-info --recursive --size --closure-size --human-readable nixpkgs#rustc /nix/store/01rrgsg5zk3cds0xgdsq40zpk6g51dz9-ncurses-6.2-dev 386.7 KiB 69.1 MiB /nix/store/0q783wnvixpqz6dxjp16nw296avgczam-libpfm-4.11.0 5.9 MiB 37.4 MiB a| * Check the existence of a path in a binary cache: # nix path-info --recursive /nix/store/blzxgyvrk32ki6xga10phr4sby2xf25q-geeqie-1.5.1 --store https://cache.nixos.org/ path '/nix/store/blzxgyvrk32ki6xga10phr4sby2xf25q-geeqie-1.5.1' is not valid * Print the 10 most recently added paths (using -json and the jq(1) com- mand): # nix path-info --json --all | jq -r 'to_entries | sort_by(.value.registrationTime) | .[-11:-1][] | .key' * Show the size of the entire Nix store: # nix path-info --json --all | jq 'map(.narSize) | add' 49812020936 * Show every path whose closure is bigger than 1 GB, sorted by closure size: # nix path-info --json --all --closure-size \ | jq 'map_values(.closureSize | select(. < 1e9)) | to_entries | sort_by(.value)' [ a|, { .key = "/nix/store/zqamz3cz4dbzfihki2mk7a63mbkxz9xq-nixos-system-machine-20.09.20201112.3090c65", .value = 5887562256, } ] * Print the path of the store derivation produced by nixpkgs#hello: # nix path-info --derivation nixpkgs#hello /nix/store/s6rn4jz1sin56rf4qj5b5v8jxjm32hlk-hello-2.10.drv Description This command shows information about the store paths produced by instal- lables, or about all paths in the store if you pass --all. By default, this command only prints the store paths. You can get addi- tional information by passing flags such as --closure-size, --size, --sigs or --json. Warning Note that nix path-info does not build or substitute the instal- lables you specify. Thus, if the corresponding store paths don't al- ready exist, this command will fail. You can use nix build to ensure that they exist. Options * --closure-size / -S Print the sum of the sizes of the NAR serialisations of the closure of each path. * --human-readable / -h With -s and -S, print sizes in a human-friendly format such as 5.67G. * --json Produce output in JSON format, suitable for consumption by another pro- gram. * --no-pretty Print compact JSON output on a single line, even when the output is a terminal. Some commands may print multiple JSON objects on separate lines. See `--pretty`. * --pretty Print multi-line, indented JSON output for readability. Default: indent if output is to a terminal. This option is only effective when `--json` is also specified. * --sigs Show signatures. * --size / -s Print the size of the NAR serialisation of each path. * --stdin Read installables from the standard input. No default installable ap- plied. 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 deriva- tions (.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. Common flake-related options * --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). 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. Logging-related options * --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 * --all Apply the operation to every store path. * --derivation Operate on the store derivation rather than its outputs. * --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. * --recursive / -r Apply operation to closure of the specified paths. Note See man nix.conf for overriding configuration settings with command line flags. nix3-path-info(1)
Name | Synopsis | Examples | Description | Options
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