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with import ./config.nix;

{ seed ? 0 }:
# A simple content-addressed derivation.
# The derivation can be arbitrarily modified by passing a different `seed`,
# but the output will always be the same
mkDerivation {
  name = "simple-content-addressed";
  buildCommand = ''
    set -x
    echo "Building a CA derivation"
    echo "The seed is ${toString seed}"
    mkdir -p $out
    echo "Hello World" > $out/hello
  '';
  __contentAddressed = true;
  outputHashMode = "recursive";
  outputHashAlgo = "sha256";
}