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70 lines
954 B
Text
70 lines
954 B
Text
= Import
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The built-in `import` function provides a way to parse a `.nix` file.
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[source,nix]
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.a.nix
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....
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{
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message = "You successfully imported me!";
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b = 12;
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}
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....
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[source]
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.Example
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....
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nix-repl> a = import ./a.nix
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nix-repl> a.message
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"You successfully imported me!"
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nix-repl> a.b
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12
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....
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The scope of the imported file does not inherit the scope of the importer.
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[source,nix]
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.b.nix
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....
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x + 7
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....
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[source]
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.Example
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....
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nix-repl> x = 12
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nix-repl> y = import ./b.nix
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nix-repl> y
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error:
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… while calling the 'import' builtin
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at «string»:1:2:
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1| import ./b.nix
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| ^
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error: undefined variable 'x'
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at /home/amy/codeberg/nix-book/b.nix:1:1:
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1| x + 7
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| ^
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2|
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....
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So to pass information when importing something, use a function.
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[source,nix]
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.c.nix
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....
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x: x + 7
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....
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[source]
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.Example
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....
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nix-repl> f = import ./c.nix
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nix-repl> f 12
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19
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....
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