nix3-derivation-add - (unknown subject)

Name  Synopsis  Description  Derivation JSON Format  Options  Logging-related options  Miscellaneous global options 

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

Name

nix derivation add - Add a store derivation

Synopsis

nix derivation add [option…]

Description

This command reads from standard input a JSON representation of a store derivation.

Store derivations are used internally by Nix. They are store paths with extension .drv that represent the build-time dependency graph to which a Nix expression evaluates.

nix derivation add takes a single derivation in the following format:

Derivation JSON Format

Warning

This JSON format is currently experimental and subject to change.

The JSON serialization of a derivations is a JSON object with the following fields:

	•		name: The name of the derivation. This is used when calculating the store paths of the derivation’s outputs.
	•		outputs: Information about the output paths of the derivation. This is a JSON object with one member per output, where the key is the output name and the value is a JSON object with these fields:

•

			path: The output path, if it is known in advanced. Otherwise, null.
	•		method: For an output which will be [content addressed], a string representing the method of content addressing that is chosen. Valid method strings are:
	•		flat
	•		nar
	•		text
	•		git

Otherwise, null.

	•		hashAlgo: For an output which will be [content addressed], the name of the hash algorithm used. Valid algorithm strings are:
	•		blake3
	•		md5
	•		sha1
	•		sha256
	•		sha512
	•		hash: For fixed-output derivations, the expected content hash in base-16.

Example

"outputs": {
"out": {
"path": "/nix/store/2543j7c6jn75blc3drf4g5vhb1rhdq29-source",
"method": "nar",
"hashAlgo": "sha256",
"hash": "6fc80dcc62179dbc12fc0b5881275898f93444833d21b89dfe5f7fbcbb1d0d62"
}
}

	•		inputSrcs: A list of store paths on which this derivation depends.
	•		inputDrvs: A JSON object specifying the derivations on which this derivation depends, and what outputs of those derivations.

Example

"inputDrvs": {
"/nix/store/6lkh5yi7nlb7l6dr8fljlli5zfd9hq58-curl-7.73.0.drv": ["dev"],
"/nix/store/fn3kgnfzl5dzym26j8g907gq3kbm8bfh-unzip-6.0.drv": ["out"]
}

specifies that this derivation depends on the dev output of curl, and the out output of unzip.

	•		system: The system type on which this derivation is to be built (e.g. x86_64-linux).
	•		builder: The absolute path of the program to be executed to run the build. Typically this is the bash shell (e.g. /nix/store/r3j288vpmczbl500w6zz89gyfa4nr0b1-bash-4.4-p23/bin/bash).
	•		args: The command-line arguments passed to the builder.
	•		env: The environment passed to the builder.
	•		structuredAttrs: Strucutured Attributes, only defined if the derivation contains them. Structured attributes are JSON, and thus embedded as-is.

Options

•

--dry-run

Show what this command would do without doing it.

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.

•

--version

Show version information.

Note

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

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