2014-08-24 18:18:18 +01:00
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<chapter xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xmlns:xi="http://www.w3.org/2001/XInclude"
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version="5.0"
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xml:id="sec-configuration-syntax">
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2018-05-02 00:57:09 +01:00
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<title>Configuration Syntax</title>
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<para>
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The NixOS configuration file
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<filename>/etc/nixos/configuration.nix</filename> is actually a <emphasis>Nix
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expression</emphasis>, which is the Nix package manager’s purely functional
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language for describing how to build packages and configurations. This means
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you have all the expressive power of that language at your disposal,
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including the ability to abstract over common patterns, which is very useful
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when managing complex systems. The syntax and semantics of the Nix language
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are fully described in the
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<link
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2014-08-24 18:18:18 +01:00
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xlink:href="http://nixos.org/nix/manual/#chap-writing-nix-expressions">Nix
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2018-05-02 00:57:09 +01:00
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manual</link>, but here we give a short overview of the most important
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constructs useful in NixOS configuration files.
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</para>
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<xi:include href="config-file.xml" />
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<xi:include href="abstractions.xml" />
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<xi:include href="modularity.xml" />
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<xi:include href="summary.xml" />
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2014-08-24 18:18:18 +01:00
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</chapter>
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