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nix3-path-info(1) General Commands Manual nix3-path-info(1) Warning This program is experimental <../../development/experimental- features.md#xp-feature-nix-command> 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 closure, sorted by size: # nix path-info --recursive --closure-size /run/current-system | sort -nk2 /nix/store/hl5xwp9kdrd1zkm0idm3kkby9q66z404-empty 96 /nix/store/27324qvqhnxj3rncazmxc4mwy79kz8ha-nameservers 112 /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 readable 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 • 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) command): # 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)' [ , { .key = "/nix/store/zqamz3cz4dbzfihki2mk7a63mbkxz9xq-nixos-system-machine-20.09.20201112.3090c65", .value = 5887562256, } ] • Print the path of the store derivation <../../glossary.md#gloss- 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 in- stallables <./nix.md#installables>, 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 already exist, this command will fail. You can use nix build to ensure that they exist. Options • --closure-size <#opt-closure-size> / -S Print the sum of the sizes of the NAR serialisations of the closure of each path. • --human-readable <#opt-human-readable> / -h With -s and -S, print sizes in a human-friendly format such as 5.67G. • --json <#opt-json> Produce output in JSON format, suitable for consumption by another program. • --no-pretty <#opt-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 sepa- rate lines. See `--pretty`. • --pretty <#opt-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 <#opt-sigs> Show signatures. • --size <#opt-size> / -s Print the size of the NAR serialisation of each path. • --stdin <#opt-stdin> Read installables from the standard input. No default installable applied. Common evaluation options • --arg <#opt-arg> name expr Pass the value expr as the argument name to Nix functions. • --arg-from-file <#opt-arg-from-file> name path Pass the contents of file path as the argument name to Nix func- tions. • --arg-from-stdin <#opt-arg-from-stdin> name Pass the contents of stdin as the argument name to Nix functions. • --argstr <#opt-argstr> name string Pass the string string as the argument name to Nix functions. • --debugger <#opt-debugger> Start an interactive environment if evaluation fails. • --eval-store <#opt-eval-store> store-url The URL of the Nix store <../../store/types/index.md#store-url- format> to use for evaluation, i.e. to store derivations (.drv files) and inputs referenced by them. • --impure <#opt-impure> Allow access to mutable paths and repositories. • --include <#opt-include> / -I path Add path to search path entries used to resolve lookup paths <../../language/constructs/lookup-path.md> This option may be given multiple times. Paths added through -I take precedence over the nix-path configura- tion setting <../../command-ref/conf-file.md#conf-nix-path> and the NIX_PATH environment variable <../../command-ref/env-common.md#env- NIX_PATH>. • --override-flake <#opt-override-flake> original-ref resolved-ref Override the flake registries, redirecting original-ref to resolved- ref. Common flake-related options • --commit-lock-file <#opt-commit-lock-file> Commit changes to the flake's lock file. • --inputs-from <#opt-inputs-from> flake-url Use the inputs of the specified flake as registry entries. • --no-registries <#opt-no-registries> Don't allow lookups in the flake registries. DEPRECATED Use --no-use-registries <../../command-ref/conf-file.md#conf- use-registries> instead. • --no-update-lock-file <#opt-no-update-lock-file> Do not allow any updates to the flake's lock file. • --no-write-lock-file <#opt-no-write-lock-file> Do not write the flake's newly generated lock file. • --output-lock-file <#opt-output-lock-file> flake-lock-path Write the given lock file instead of flake.lock within the top-level flake. • --override-input <#opt-override-input> input-path flake-url Override a specific flake input (e.g. dwarffs/nixpkgs). This implies --no-write-lock-file. • --recreate-lock-file <#opt-recreate-lock-file> Recreate the flake's lock file from scratch. DEPRECATED Use nix flake update <../../command-ref/new-cli/nix3-flake- update.md> instead. • --reference-lock-file <#opt-reference-lock-file> flake-lock-path Read the given lock file instead of flake.lock within the top-level flake. • --update-input <#opt-update-input> input-path Update a specific flake input (ignoring its previous entry in the lock file). DEPRECATED Use nix flake update <../../command-ref/new-cli/nix3-flake- update.md> instead. Logging-related options • --debug <#opt-debug> Set the logging verbosity level to `debug'. • --log-format <#opt-log-format> format Set the format of log output; one of raw, internal-json, bar or bar- with-logs. • --print-build-logs <#opt-print-build-logs> / -L Print full build logs on standard error. • --quiet <#opt-quiet> Decrease the logging verbosity level. • --verbose <#opt-verbose> / -v Increase the logging verbosity level. Miscellaneous global options • --help <#opt-help> Show usage information. • --offline <#opt-offline> Disable substituters and consider all previously downloaded files up-to-date. • --option <#opt-option> name value Set the Nix configuration setting name to value (overriding nix.conf). • --refresh <#opt-refresh> Consider all previously downloaded files out-of-date. • --repair <#opt-repair> During evaluation, rewrite missing or corrupted files in the Nix store. During building, rebuild missing or corrupted store paths. • --version <#opt-version> Show version information. Options that change the interpretation of installables • --all <#opt-all> Apply the operation to every store path. • --derivation <#opt-derivation> Operate on the store derivation <../../glossary.md#gloss-store- derivation> rather than its outputs. • --expr <#opt-expr> expr Interpret installables <../../command-ref/new- cli/nix.md#installables> as attribute paths relative to the Nix ex- pression expr. • --file <#opt-file> / -f file Interpret installables <../../command-ref/new- cli/nix.md#installables> as attribute paths relative to the Nix ex- pression stored in file. If file is the character -, then a Nix ex- pression is read from standard input. Implies --impure. • --recursive <#opt-recursive> / -r Apply operation to closure of the specified paths. Note See man nix.conf <../../command-ref/conf-file.md#command-line-flags> for overriding configuration settings with command line flags. nix3-path-info(1)
Name | Synopsis | Examples | Description | Options
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