facter: remove debug options

we have now the "detected" namespace, so we no longer need these hacks

Author: Mic92

modules/nixos/facter.nix

@@ -27,81 +27,5 @@
       default = null;
       description = "Path to a report generated by nixos-facter.";
     };
-
-    debug = {
-      options = mkOption {
-        type = types.raw;
-        description = "All of the options affected by Facter modules";
-      };
-      config = mkOption {
-        type = types.raw;
-        description = "A breakdown of the NixOS config being applied by each Facter module.";
-      };
-    };
   };
-
-  config.facter.debug = {
-    options =
-      let
-        # we want all options except our own, otherwise we get into recursive issues
-        otherOptions = lib.filterAttrs (n: _: n != "facter") options;
-
-        # a filter for identifying options where a Facter module has affected the value
-        touchedByFacter =
-          { definitionsWithLocations, ... }:
-          let
-            # some options fail when we try to evaluate them, so we wrap this in tryEval
-            eval = builtins.tryEval (
-              builtins.any (
-                {
-                  file ? "",
-                  ...
-                }:
-                # we only want options affected by our modules
-                lib.hasPrefix "${modulePath}/modules/nixos" file
-              ) definitionsWithLocations
-            );
-          in
-          eval.success && eval.value;
-      in
-      lib.fold (a: b: lib.recursiveUpdate a b) { } (
-        map (value@{ loc, ... }: lib.setAttrByPath loc value) (
-          # we collect the options first with simple option filter, and then we filter them some more, otherwise we get
-          # a max-call depth exceeded error (dunno why)
-          lib.filter touchedByFacter (lib.collect lib.isOption otherOptions)
-        )
-      );
-
-    config =
-      # extract the config values for each option, broken down by facter module
-      lib.mapAttrsRecursiveCond
-        (
-          {
-            definitionsWithLocations ? null,
-            ...
-          }:
-          # keep recursing if we are not processing an option, otherwise apply the map function
-          definitionsWithLocations == null
-        )
-        (
-          _:
-          { definitionsWithLocations, ... }:
-          builtins.listToAttrs (
-            map
-              (
-                { file, value }:
-                {
-                  name = "<facter>${lib.removePrefix modulePath file}";
-                  inherit value;
-                }
-              )
-              (
-                # we only want facter modules
-                lib.filter ({ file, ... }: lib.hasPrefix modulePath file) definitionsWithLocations
-              )
-          )
-        )
-        cfg.debug.options;
-  };
-
 }