stdenv: use lib.isX instead of typeOf Y == X

  checkDependencyList = checkDependencyList' [];

  checkDependencyList' = positions: name: deps: lib.flip lib.imap1 deps (index: dep:

    if lib.isDerivation dep || dep == null || builtins.typeOf dep == "string" || builtins.typeOf dep == "path" then dep

    if lib.isDerivation dep || dep == null || builtins.isString dep || builtins.isPath dep then dep

    else if lib.isList dep then checkDependencyList' ([index] ++ positions) name dep

    else throw "Dependency is not of a valid type: ${lib.concatMapStrings (ix: "element ${toString ix} of ") ([index] ++ positions)}${name} for ${attrs.name or attrs.pname}");

in if builtins.length erroneousHardeningFlags != 0