FreeBSD Manual Pages
nix3-flake-metadata(1) General Commands Manual nix3-flake-metadata(1) Warning This program is experimental <../../development/experimental- features.md#xp-feature-nix-command> and its interface is subject to change. Name nix flake metadata - show flake metadata Synopsis nix flake metadata [option...] flake-url Examples • Show what dwarffs resolves to: # nix flake metadata dwarffs Resolved URL: github:edolstra/dwarffs Locked URL: github:edolstra/dwarffs/f691e2c991e75edb22836f1dbe632c40324215c5 Description: A filesystem that fetches DWARF debug info from the Internet on demand Path: /nix/store/769s05vjydmc2lcf6b02az28wsa9ixh1-source Revision: f691e2c991e75edb22836f1dbe632c40324215c5 Last modified: 2021-01-21 15:41:26 Inputs: nix: github:NixOS/nix/6254b1f5d298ff73127d7b0f0da48f142bdc753c lowdown-src: github:kristapsdz/lowdown/1705b4a26fbf065d9574dce47a94e8c7c79e052f nixpkgs: github:NixOS/nixpkgs/ad0d20345219790533ebe06571f82ed6b034db31 nixpkgs follows input 'nix/nixpkgs' • Show information about dwarffs in JSON format: # nix flake metadata dwarffs --json | jq . { "description": "A filesystem that fetches DWARF debug info from the Internet on demand", "lastModified": 1597153508, "locked": { "lastModified": 1597153508, "narHash": "sha256-VHg3MYVgQ12LeRSU2PSoDeKlSPD8PYYEFxxwkVVDRd0=", "owner": "edolstra", "repo": "dwarffs", "rev": "d181d714fd36eb06f4992a1997cd5601e26db8f5", "type": "github" }, "locks": { ... }, "original": { "id": "dwarffs", "type": "indirect" }, "originalUrl": "flake:dwarffs", "path": "/nix/store/hang3792qwdmm2n0d9nsrs5n6bsws6kv-source", "resolved": { "owner": "edolstra", "repo": "dwarffs", "type": "github" }, "resolvedUrl": "github:edolstra/dwarffs", "revision": "d181d714fd36eb06f4992a1997cd5601e26db8f5", "url": "github:edolstra/dwarffs/d181d714fd36eb06f4992a1997cd5601e26db8f5" } Description This command shows information about the flake specified by the flake reference flake-url. It resolves the flake reference using the flake registry <./nix3-registry.md>, fetches it, and prints some meta data. This includes: • Resolved URL: If flake-url is a flake identifier, then this is the flake reference that specifies its actual location, looked up in the flake registry. • Locked URL: A flake reference that contains a commit or content hash and thus uniquely identifies a specific flake version. • Description: A one-line description of the flake, taken from the de- scription field in flake.nix. • Path: The store path containing the source code of the flake. • Revision: The Git or Mercurial commit hash of the locked flake. • Revisions: The number of ancestors of the Git or Mercurial commit of the locked flake. Note that this is not available for github flakes. • Last modified: For Git or Mercurial flakes, this is the commit time of the commit of the locked flake; for tarball flakes, it's the most recent timestamp of any file inside the tarball. • Inputs: The flake inputs with their corresponding lock file entries. With --json, the output is a JSON object with the following fields: • original and originalUrl: The flake reference specified by the user (flake-url) in attribute set and URL representation. • resolved and resolvedUrl: The resolved flake reference (see above) in attribute set and URL representation. • locked and lockedUrl: The locked flake reference (see above) in at- tribute set and URL representation. • description: See Description above. • path: See Path above. • revision: See Revision above. • revCount: See Revisions above. • lastModified: See Last modified above. • locks: The contents of flake.lock. Options • --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. 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. Note See man nix.conf <../../command-ref/conf-file.md#command-line-flags> for overriding configuration settings with command line flags. nix3-flake-metadata(1)
Name | Synopsis | Examples | Description | Options
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=nix3-flake-metadata&sektion=1&manpath=FreeBSD+Ports+15.0>