lib.strings.addContextFrom

Appends string context from string like object src to target.

Strings in Nix carry an invisible context which is a list of strings representing store paths. If the string is later used in a derivation attribute, the derivation will properly populate the inputDrvs and inputSrcs.

Inputs

src

The string to take the context from. If the argument is not a string, it will be implicitly converted to a string.

target

The string to append the context to. If the argument is not a string, it will be implicitly converted to a string.

Type

addContextFrom :: string -> string -> string

Examples

pkgs = import <nixpkgs> { };
addContextFrom pkgs.coreutils "bar"
=> "bar"

nix-repl> builtins.getContext (lib.strings.addContextFrom pkgs.coreutils "bar")
{
  "/nix/store/m1s1d2dk2dqqlw3j90jl3cjy2cykbdxz-coreutils-9.5.drv" = { ... };
}

Noogle detected

• lib.addContextFrom

addContextFrom = src: target: substring 0 0 src + target;