From be2638f11b5c7efaf805a516fcb9534c61175a74 Mon Sep 17 00:00:00 2001
From: Infinidoge <infinidoge@inx.moe>
Date: Wed, 7 Feb 2024 11:22:53 -0500
Subject: [PATCH] lib: add recMap, chain, spread functions

---
 lib/default.nix | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/lib/default.nix b/lib/default.nix
index 951e7bf..c758104 100644
--- a/lib/default.nix
+++ b/lib/default.nix
@@ -32,6 +32,22 @@ rec {
     lib.genAttrs list (name: func (if builtins.typeOf attrs == "lambda" then attrs name else attrs));
 
   dirsOf = dir: lib.attrNames (lib.filterAttrs (file: type: type == "directory") (builtins.readDir dir));
+
+  # Only useful for functors
+  recMap = f: list:
+    if list == [ ] then f
+    else recMap (f (head list)) (tail list)
+  ;
+
+  chain = {
+    func = id;
+    __functor = self: input:
+      if (typeOf input) == "lambda"
+      then self // { func = e: input (self.func e); }
+      else self.func input;
+  };
+
+  spread = function: list: if list == [ ] then function else spread (function (head list)) (tail list);
 } // (
   import ./digga.nix { inherit lib; }
 ) // (