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|
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|
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|
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|
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<div class="md-nav__link md-nav__container">
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|
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|
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Nixpkgs
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</a>
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|
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|
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<span class="md-ellipsis">
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Build Helpers
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Development
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Functions
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|
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<span class="md-nav__icon md-icon"></span>
|
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|
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<li class="md-nav__item md-nav__item--pruned md-nav__item--nested">
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|
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<span class="md-ellipsis">
|
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Hooks
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|
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|
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<span class="md-nav__icon md-icon"></span>
|
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|
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|
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|
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|
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|
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|
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|
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|
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Languages And Frameworks
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|
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|
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</a>
|
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|
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|
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<li class="md-nav__item md-nav__item--active md-nav__item--nested">
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Library Reference
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|
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<a href="../asserts/" class="md-nav__link">
|
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|
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|
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<span class="md-ellipsis">
|
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lib.asserts: assertion functions
|
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</span>
|
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|
||
|
||
</a>
|
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</li>
|
||
|
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<li class="md-nav__item">
|
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<a href="../attrsets/" class="md-nav__link">
|
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|
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|
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|
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lib.attrsets: attribute set functions
|
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</span>
|
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|
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|
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</a>
|
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</li>
|
||
|
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|
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|
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|
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|
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<span class="md-ellipsis">
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lib.cli: command-line serialization functions
|
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</span>
|
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|
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<span class="md-nav__icon md-icon"></span>
|
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</label>
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|
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<a href="./" class="md-nav__link md-nav__link--active">
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|
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<span class="md-ellipsis">
|
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lib.cli: command-line serialization functions
|
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|
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|
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</a>
|
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|
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|
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|
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<nav class="md-nav md-nav--secondary" aria-label="Table of contents">
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|
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<span class="md-nav__icon md-icon"></span>
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|
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|
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<nav class="md-nav" aria-label="lib.cli.toGNUCommandLineShell">
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<a href="#inputs" class="md-nav__link">
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<span class="md-ellipsis">
|
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Inputs
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</a>
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<li class="md-nav__item">
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</a>
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</nav>
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<li class="md-nav__item">
|
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<a href="#function-library-lib.cli.toGNUCommandLine" class="md-nav__link">
|
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<span class="md-ellipsis">
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|
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</span>
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</a>
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<nav class="md-nav" aria-label="lib.cli.toGNUCommandLine">
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<a href="#examples_1" class="md-nav__link">
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<span class="md-ellipsis">
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Examples
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</ul>
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</nav>
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</li>
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||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li class="md-nav__item">
|
||
<a href="../customisation/" class="md-nav__link">
|
||
|
||
|
||
<span class="md-ellipsis">
|
||
lib.customisation: Functions to customise (derivation-related) functions, derivatons, or attribute sets
|
||
</span>
|
||
|
||
|
||
</a>
|
||
</li>
|
||
|
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|
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|
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|
||
|
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|
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|
||
|
||
|
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|
||
<li class="md-nav__item">
|
||
<a href="../debug/" class="md-nav__link">
|
||
|
||
|
||
<span class="md-ellipsis">
|
||
lib.debug: debugging functions
|
||
</span>
|
||
|
||
|
||
</a>
|
||
</li>
|
||
|
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|
||
|
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|
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|
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|
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|
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|
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|
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<li class="md-nav__item">
|
||
<a href="../derivations/" class="md-nav__link">
|
||
|
||
|
||
<span class="md-ellipsis">
|
||
lib.derivations: miscellaneous derivation-specific functions
|
||
</span>
|
||
|
||
|
||
</a>
|
||
</li>
|
||
|
||
|
||
|
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|
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|
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|
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|
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|
||
|
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|
||
<li class="md-nav__item">
|
||
<a href="../fileset/" class="md-nav__link">
|
||
|
||
|
||
<span class="md-ellipsis">
|
||
lib.fileset: file set functions
|
||
</span>
|
||
|
||
|
||
</a>
|
||
</li>
|
||
|
||
|
||
|
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|
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|
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|
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|
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|
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|
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<li class="md-nav__item">
|
||
<a href="../filesystem/" class="md-nav__link">
|
||
|
||
|
||
<span class="md-ellipsis">
|
||
lib.filesystem: filesystem functions
|
||
</span>
|
||
|
||
|
||
</a>
|
||
</li>
|
||
|
||
|
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|
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|
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|
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|
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|
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|
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|
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|
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<li class="md-nav__item">
|
||
<a href="../fixedPoints/" class="md-nav__link">
|
||
|
||
|
||
<span class="md-ellipsis">
|
||
lib.fixedPoints: explicit recursion functions
|
||
</span>
|
||
|
||
|
||
</a>
|
||
</li>
|
||
|
||
|
||
|
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|
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|
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|
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|
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|
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|
||
<li class="md-nav__item">
|
||
<a href="../generators/" class="md-nav__link">
|
||
|
||
|
||
<span class="md-ellipsis">
|
||
lib.generators: functions that create file formats from nix data structures
|
||
</span>
|
||
|
||
|
||
</a>
|
||
</li>
|
||
|
||
|
||
|
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|
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|
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|
||
|
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|
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|
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|
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<li class="md-nav__item">
|
||
<a href="../gvariant/" class="md-nav__link">
|
||
|
||
|
||
<span class="md-ellipsis">
|
||
lib.gvariant: GVariant formatted string serialization functions
|
||
</span>
|
||
|
||
|
||
</a>
|
||
</li>
|
||
|
||
|
||
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|
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|
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|
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|
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|
||
<li class="md-nav__item">
|
||
<a href="../lists/" class="md-nav__link">
|
||
|
||
|
||
<span class="md-ellipsis">
|
||
lib.lists: list manipulation functions
|
||
</span>
|
||
|
||
|
||
</a>
|
||
</li>
|
||
|
||
|
||
|
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|
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|
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<li class="md-nav__item">
|
||
<a href="../meta/" class="md-nav__link">
|
||
|
||
|
||
<span class="md-ellipsis">
|
||
lib.meta: functions for derivation metadata
|
||
</span>
|
||
|
||
|
||
</a>
|
||
</li>
|
||
|
||
|
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|
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|
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|
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|
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|
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|
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|
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<li class="md-nav__item">
|
||
<a href="../options/" class="md-nav__link">
|
||
|
||
|
||
<span class="md-ellipsis">
|
||
lib.options: NixOS / nixpkgs option handling
|
||
</span>
|
||
|
||
|
||
</a>
|
||
</li>
|
||
|
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|
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|
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<li class="md-nav__item">
|
||
<a href="../path/" class="md-nav__link">
|
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|
||
|
||
<span class="md-ellipsis">
|
||
lib.path: path functions
|
||
</span>
|
||
|
||
|
||
</a>
|
||
</li>
|
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|
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|
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|
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|
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<li class="md-nav__item">
|
||
<a href="../sources/" class="md-nav__link">
|
||
|
||
|
||
<span class="md-ellipsis">
|
||
lib.sources: source filtering functions
|
||
</span>
|
||
|
||
|
||
</a>
|
||
</li>
|
||
|
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|
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|
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|
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|
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<li class="md-nav__item">
|
||
<a href="../strings/" class="md-nav__link">
|
||
|
||
|
||
<span class="md-ellipsis">
|
||
lib.strings: string manipulation functions
|
||
</span>
|
||
|
||
|
||
</a>
|
||
</li>
|
||
|
||
|
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|
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|
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|
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|
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|
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|
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|
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|
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<li class="md-nav__item">
|
||
<a href="../trivial/" class="md-nav__link">
|
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|
||
|
||
<span class="md-ellipsis">
|
||
lib.trivial: miscellaneous functions
|
||
</span>
|
||
|
||
|
||
</a>
|
||
</li>
|
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|
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|
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|
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|
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|
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|
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|
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|
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<li class="md-nav__item">
|
||
<a href="../versions/" class="md-nav__link">
|
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|
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|
||
<span class="md-ellipsis">
|
||
lib.versions: version string functions
|
||
</span>
|
||
|
||
|
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</a>
|
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</li>
|
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|
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|
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|
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|
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</ul>
|
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</nav>
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|
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<li class="md-nav__item md-nav__item--pruned md-nav__item--nested">
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<a href="../../Module-System/module-system.chapter/" class="md-nav__link">
|
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|
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|
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<span class="md-ellipsis">
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Module System
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</span>
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<span class="md-ellipsis">
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Packages
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<span class="md-ellipsis">
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Standard Environment
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</span>
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|
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|
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<span class="md-ellipsis">
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Using Nixpkgs
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</span>
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<span class="md-nav__icon md-icon"></span>
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</ul>
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</nav>
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</ul>
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</nav>
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</div>
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</div>
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<div class="md-sidebar md-sidebar--secondary" data-md-component="sidebar" data-md-type="toc" >
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<div class="md-sidebar__inner">
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<label class="md-nav__title" for="__toc">
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<span class="md-nav__icon md-icon"></span>
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Table of contents
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</label>
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<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
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<li class="md-nav__item">
|
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<a href="#function-library-lib.cli.toGNUCommandLineShell" class="md-nav__link">
|
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<span class="md-ellipsis">
|
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lib.cli.toGNUCommandLineShell
|
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</span>
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</a>
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|
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<nav class="md-nav" aria-label="lib.cli.toGNUCommandLineShell">
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<a href="#inputs" class="md-nav__link">
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<span class="md-ellipsis">
|
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Inputs
|
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</span>
|
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</a>
|
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</li>
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<li class="md-nav__item">
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<a href="#examples" class="md-nav__link">
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Examples
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</li>
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</ul>
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</nav>
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<li class="md-nav__item">
|
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<a href="#function-library-lib.cli.toGNUCommandLine" class="md-nav__link">
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<span class="md-ellipsis">
|
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lib.cli.toGNUCommandLine
|
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</span>
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</a>
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<nav class="md-nav" aria-label="lib.cli.toGNUCommandLine">
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<ul class="md-nav__list">
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<a href="#inputs_1" class="md-nav__link">
|
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<span class="md-ellipsis">
|
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Inputs
|
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</span>
|
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</a>
|
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</li>
|
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<li class="md-nav__item">
|
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<a href="#options" class="md-nav__link">
|
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<span class="md-ellipsis">
|
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Options
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</span>
|
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</a>
|
||
|
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</li>
|
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|
||
<li class="md-nav__item">
|
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<a href="#examples_1" class="md-nav__link">
|
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<span class="md-ellipsis">
|
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Examples
|
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</span>
|
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</a>
|
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</li>
|
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|
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</ul>
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</li>
|
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</ul>
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</nav>
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|
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</div>
|
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</div>
|
||
|
||
|
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|
||
<div class="md-content" data-md-component="content">
|
||
<article class="md-content__inner md-typeset">
|
||
|
||
|
||
|
||
|
||
<h1 id="sec-functions-library-cli">lib.cli: command-line serialization functions</h1>
|
||
<h2 id="function-library-lib.cli.toGNUCommandLineShell"><code>lib.cli.toGNUCommandLineShell</code></h2>
|
||
<p>Automatically convert an attribute set to command-line options.</p>
|
||
<p>This helps protect against malformed command lines and also to reduce
|
||
boilerplate related to command-line construction for simple use cases.</p>
|
||
<p><code>toGNUCommandLineShell</code> returns an escaped shell string.</p>
|
||
<h3 id="inputs">Inputs</h3>
|
||
<p><code>options</code></p>
|
||
<p>: How to format the arguments, see <code>toGNUCommandLine</code></p>
|
||
<p><code>attrs</code></p>
|
||
<p>: The attributes to transform into arguments.</p>
|
||
<h3 id="examples">Examples</h3>
|
||
<div class="admonition example">
|
||
<p class="admonition-title"><code>lib.cli.toGNUCommandLineShell</code> usage example</p>
|
||
<div class="highlight"><pre><span></span><code>cli<span class="o">.</span>toGNUCommandLineShell <span class="p">{}</span> <span class="p">{</span>
|
||
<span class="ss">data</span> <span class="o">=</span> <span class="nb">builtins</span><span class="o">.</span>toJSON <span class="p">{</span> <span class="ss">id</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="p">};</span>
|
||
<span class="ss">X</span> <span class="o">=</span> <span class="s2">"PUT"</span><span class="p">;</span>
|
||
<span class="ss">retry</span> <span class="o">=</span> <span class="mi">3</span><span class="p">;</span>
|
||
<span class="ss">retry-delay</span> <span class="o">=</span> <span class="no">null</span><span class="p">;</span>
|
||
<span class="ss">url</span> <span class="o">=</span> <span class="p">[</span> <span class="s2">"https://example.com/foo"</span> <span class="s2">"https://example.com/bar"</span> <span class="p">];</span>
|
||
<span class="ss">silent</span> <span class="o">=</span> <span class="no">false</span><span class="p">;</span>
|
||
<span class="ss">verbose</span> <span class="o">=</span> <span class="no">true</span><span class="p">;</span>
|
||
<span class="p">}</span>
|
||
<span class="o">=></span> <span class="s2">"'-X' 'PUT' '--data' '{</span><span class="se">\"</span><span class="s2">id</span><span class="se">\"</span><span class="s2">:0}' '--retry' '3' '--url' 'https://example.com/foo' '--url' 'https://example.com/bar' '--verbose'"</span><span class="p">;</span>
|
||
</code></pre></div>
|
||
</div>
|
||
<p>Located at <a href="https://github.com/NixOS/nixpkgs/blob/master/lib/cli.nix#L43">lib/cli.nix:43</a> in <code><nixpkgs></code>.</p>
|
||
<h2 id="function-library-lib.cli.toGNUCommandLine"><code>lib.cli.toGNUCommandLine</code></h2>
|
||
<p>Automatically convert an attribute set to a list of command-line options.</p>
|
||
<p><code>toGNUCommandLine</code> returns a list of string arguments.</p>
|
||
<h3 id="inputs_1">Inputs</h3>
|
||
<p><code>options</code></p>
|
||
<p>: How to format the arguments, see below.</p>
|
||
<p><code>attrs</code></p>
|
||
<p>: The attributes to transform into arguments.</p>
|
||
<h3 id="options">Options</h3>
|
||
<p><code>mkOptionName</code></p>
|
||
<p>: How to string-format the option name;
|
||
By default one character is a short option (<code>-</code>), more than one characters a long option (<code>--</code>).</p>
|
||
<p><code>mkBool</code></p>
|
||
<p>: How to format a boolean value to a command list;
|
||
By default it’s a flag option (only the option name if true, left out completely if false).</p>
|
||
<p><code>mkList</code></p>
|
||
<p>: How to format a list value to a command list;
|
||
By default the option name is repeated for each value and <code>mkOption</code> is applied to the values themselves.</p>
|
||
<p><code>mkOption</code></p>
|
||
<p>: How to format any remaining value to a command list;
|
||
On the toplevel, booleans and lists are handled by <code>mkBool</code> and <code>mkList</code>, though they can still appear as values of a list.
|
||
By default, everything is printed verbatim and complex types are forbidden (lists, attrsets, functions). <code>null</code> values are omitted.</p>
|
||
<p><code>optionValueSeparator</code></p>
|
||
<p>: How to separate an option from its flag;
|
||
By default, there is no separator, so option <code>-c</code> and value <code>5</code> would become ["-c" "5"].
|
||
This is useful if the command requires equals, for example, <code>-c=5</code>.</p>
|
||
<h3 id="examples_1">Examples</h3>
|
||
<div class="admonition example">
|
||
<p class="admonition-title"><code>lib.cli.toGNUCommandLine</code> usage example</p>
|
||
<div class="highlight"><pre><span></span><code>cli<span class="o">.</span>toGNUCommandLine <span class="p">{}</span> <span class="p">{</span>
|
||
<span class="ss">data</span> <span class="o">=</span> <span class="nb">builtins</span><span class="o">.</span>toJSON <span class="p">{</span> <span class="ss">id</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="p">};</span>
|
||
<span class="ss">X</span> <span class="o">=</span> <span class="s2">"PUT"</span><span class="p">;</span>
|
||
<span class="ss">retry</span> <span class="o">=</span> <span class="mi">3</span><span class="p">;</span>
|
||
<span class="ss">retry-delay</span> <span class="o">=</span> <span class="no">null</span><span class="p">;</span>
|
||
<span class="ss">url</span> <span class="o">=</span> <span class="p">[</span> <span class="s2">"https://example.com/foo"</span> <span class="s2">"https://example.com/bar"</span> <span class="p">];</span>
|
||
<span class="ss">silent</span> <span class="o">=</span> <span class="no">false</span><span class="p">;</span>
|
||
<span class="ss">verbose</span> <span class="o">=</span> <span class="no">true</span><span class="p">;</span>
|
||
<span class="p">}</span>
|
||
<span class="o">=></span> <span class="p">[</span>
|
||
<span class="s2">"-X"</span> <span class="s2">"PUT"</span>
|
||
<span class="s2">"--data"</span> <span class="s2">"{</span><span class="se">\"</span><span class="s2">id</span><span class="se">\"</span><span class="s2">:0}"</span>
|
||
<span class="s2">"--retry"</span> <span class="s2">"3"</span>
|
||
<span class="s2">"--url"</span> <span class="s2">"https://example.com/foo"</span>
|
||
<span class="s2">"--url"</span> <span class="s2">"https://example.com/bar"</span>
|
||
<span class="s2">"--verbose"</span>
|
||
<span class="p">]</span>
|
||
</code></pre></div>
|
||
</div>
|
||
<p>Located at <a href="https://github.com/NixOS/nixpkgs/blob/master/lib/cli.nix#L119">lib/cli.nix:119</a> in <code><nixpkgs></code>.</p>
|
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