lib/types: always use `<function body>` instead of `[function body]` to indicate a function inside an option structure

The motivation is to have a single identifier for that. Useful for the
next commit where I'll try to escape option-parts correctly (options can
be any kind of strings, but unless these are Nix identifiers, they must
be quoted).

Since `<function body>` (or `<name>`/`*`) are special identifiers in
error messages and the manual, we need a unique way to mark an option
part as function call because these are not to be quoted.

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/types.nix b/lib/types.nix
index 9b2c5e846ad1..db5ae03d6fe9 100644
--- a/lib/types.nix
+++ b/lib/types.nix
@@ -616,8 +616,8 @@ rec {
       descriptionClass = "composite";
       check = isFunction;
       merge = loc: defs:
-        fnArgs: (mergeDefinitions (loc ++ [ "[function body]" ]) elemType (map (fn: { inherit (fn) file; value = fn.value fnArgs; }) defs)).mergedValue;
-      getSubOptions = prefix: elemType.getSubOptions (prefix ++ [ "[function body]" ]);
+        fnArgs: (mergeDefinitions (loc ++ [ "<function body>" ]) elemType (map (fn: { inherit (fn) file; value = fn.value fnArgs; }) defs)).mergedValue;
+      getSubOptions = prefix: elemType.getSubOptions (prefix ++ [ "<function body>" ]);
       getSubModules = elemType.getSubModules;
       substSubModules = m: functionTo (elemType.substSubModules m);
       functor = (defaultFunctor "functionTo") // { wrapped = elemType; };