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diff --git a/zettelkast/Notes/010720231037 - With function.md b/zettelkast/Notes/010720231037 - With function.md new file mode 100644 index 0000000..d646a8f --- /dev/null +++ b/zettelkast/Notes/010720231037 - With function.md @@ -0,0 +1,18 @@ +#nix-lang + +The `with` function brings all attributes from a given set, e.g nixpkgs, into the local scope. Making them accessible as if they were declared in the same file. + +An example, bringing everything from nixpkgs into scope: +``` +with import <nixpkgs>; +with python310Packages; <-- declared in nixpkgs + +buildPythonPackage <-- declared in python310Packages +``` + +The import statement is required here because imports a nix expression from another source, in this case nixpkgs. +It is not required at line two, because python310Packages itself is already in the local scope. + + +--- +[Nix Manual](https://nixos.org/manual/nix/stable/language/index.html) |