lib: correctly render docs for nested identifiers

Applies https://github.com/nix-community/nixdoc/pull/27 and fixes up the
location information rendering, allowing lib functions to be nested in
further scopes

Needed for later commits

1 files changed, 9 insertions, 7 deletions

diff --git a/doc/doc-support/lib-function-locations.nix b/doc/doc-support/lib-function-locations.nix
index ae1123c63ad30..3ede09ba50f58 100644
--- a/doc/doc-support/lib-function-locations.nix
+++ b/doc/doc-support/lib-function-locations.nix
@@ -2,19 +2,21 @@
 let
   revision = pkgs.lib.trivial.revisionWithDefault (nixpkgs.revision or "master");
 
-  libDefPos = set:
-    builtins.map
-      (name: {
-        name = name;
+  libDefPos = prefix: set:
+    builtins.concatMap
+      (name: [{
+        name = builtins.concatStringsSep "." (prefix ++ [name]);
         location = builtins.unsafeGetAttrPos name set;
-      })
-      (builtins.attrNames set);
+      }] ++ nixpkgsLib.optionals
+        (builtins.length prefix == 0 && builtins.isAttrs set.${name})
+        (libDefPos (prefix ++ [name]) set.${name})
+      ) (builtins.attrNames set);
 
   libset = toplib:
     builtins.map
       (subsetname: {
         subsetname = subsetname;
-        functions = libDefPos toplib.${subsetname};
+        functions = libDefPos [] toplib.${subsetname};
       })
       (builtins.map (x: x.name) libsets);