anchor.diff:        default = false;
         # getEnv part is in check-meta.nix
         defaultText = literalExpression ''false || builtins.getEnv "NIXPKGS_ALLOW_BROKEN" == "1"'';
  -      description = ''
  +      description = lib.mdDoc ''
           Whether to allow broken packages.
   
  -        See <link xlink:href="https://nixos.org/manual/nixpkgs/stable/#sec-allow-broken">Installing broken packages</link> in the NixOS manual.
  +        See [Installing broken packages](https://nixos.org/manual/nixpkgs/stable/#sec-allow-broken) in the NixOS manual.
         '';
       };
   
  
positive.code:       default = false;
        # getEnv part is in check-meta.nix
        defaultText = literalExpression ''false || builtins.getEnv "NIXPKGS_ALLOW_UNSUPPORTED_SYSTEM" == "1"'';
        description = ''
          Whether to allow unsupported packages.
  
          See <link xlink:href="https://nixos.org/manual/nixpkgs/stable/#sec-allow-unsupported-system">Installing packages on unsupported systems</link> in the NixOS manual.
        '';
      };
  
      showDerivationWarnings = mkOption {
        type = types.listOf (types.enum [ "maintainerless" ]);
        default = [];
        description = ''
          Which warnings to display for potentially dangerous
          or deprecated values passed into `stdenv.mkDerivation`.
  
          A list of warnings can be found in
          <link xlink:href="https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/check-meta.nix">/pkgs/stdenv/generic/check-meta.nix</link>.
  
          This is not a stable interface; warnings may be added, changed
          or removed without prior notice.
  
negative.code:     /* Config options */
  
      warnUndeclaredOptions = mkOption {
        description = lib.mdDoc "Whether to warn when `config` contains an unrecognized attribute.";
        type = types.bool;
        default = false;
      };
  
      doCheckByDefault = mkMassRebuild {
        feature = "run `checkPhase` by default";
      };
  
      strictDepsByDefault = mkMassRebuild {
        feature = "set `strictDeps` to true by default";
      };
  
      enableParallelBuildingByDefault = mkMassRebuild {
        feature = "set `enableParallelBuilding` to true by default";
      };
  
      configurePlatformsByDefault = mkMassRebuild {
        feature = "set `configurePlatforms` to `[\"build\" \"host\"]` by default";
      };
  
      contentAddressedByDefault = mkMassRebuild {
        feature = "set `__contentAddressed` to true by default";
      };
  
      allowAliases = mkOption {
        type = types.bool;
        default = true;
        description = lib.mdDoc ''
          Whether to expose old attribute names for compatibility.
  
          The recommended setting is to enable this, as it
  