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Function of the day

lib.attrsets.getOutput

  • Get a package output. If no output is found, fallback to .out and then to the default. The function is idempotent: getOutput "b" (getOutput "a" p) == getOutput "a" p.

    Inputs

    output

    1. Function argument

    pkg

    2. Function argument

    Type

    getOutput :: String -> :: Derivation -> Derivation

    Examples

    lib.attrsets.getOutput usage example

    "${getOutput "dev" pkgs.openssl}"
=> "/nix/store/9rz8gxhzf8sw4kf2j2f1grr49w8zx5vj-openssl-1.0.1r-dev"