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nix/doc/manual/src/language/index.md
Valentin Gagarin 703b335c1d reword description of language properties 
the list style is supposed to give more structure.
each property is explained as concisely as possible while trying not to
sound too fancy.
2022-08-15 11:34:39 +02:00

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Nix Language

The Nix language is

  • domain-specific

    It only exists for the Nix package manager: to describe packages and configurations as well as their variants and compositions. It is not intended for general purpose use.

  • declarative

    There is no notion of executing sequential steps. Dependencies between operations are established only through data.

  • pure

    Values cannot change during computation. Functions always produce the same output if their input does not change.

  • functional

    Functions are like any other value. Functions can be assigned to names, taken as arguments, or returned by functions.

  • lazy

    Expressions are only evaluated when their value is needed.

  • dynamically typed

    Type errors are only detected when expressions are evaluated.