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| -rw-r--r-- | lib/types.nix | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/types.nix b/lib/types.nix index ee891f8231b6..0810a43ed0eb 100644 --- a/lib/types.nix +++ b/lib/types.nix @@ -453,6 +453,16 @@ rec { functor = (defaultFunctor name) // { wrapped = elemType; }; }; + functionTo = elemType: mkOptionType { + name = "function that evaluates to a(n) ${elemType.name}"; + check = isFunction; + merge = loc: defs: + fnArgs: elemType.merge loc (map (fn: { inherit (fn) file; value = fn.value fnArgs; }) defs); + getSubOptions = elemType.getSubOptions; + getSubModules = elemType.getSubModules; + substSubModules = m: functionTo (elemType.substSubModules m); + }; + # A submodule (like typed attribute set). See NixOS manual. submodule = modules: submoduleWith { shorthandOnlyDefinesConfig = true; |