[NixOS] Add functions autoload

nixos/environment.nix

@@ -0,0 +1,42 @@
+{ config, pkgs, options, lib, ... }:
+with lib;
+{
+  options = {
+    dotfiles-directory = mkOption {
+      type = types.str;
+      default = "/home/imalison/dotfiles";
+    };
+  };
+
+  config = let libDir = "${config.dotfiles-directory}/dotfiles/lib";
+  in {
+    # Shell configuration
+    programs.zsh = {
+      enable = true;
+      syntaxHighlighting = {
+        enable = true;
+      };
+      ohMyZsh = {
+        enable = true;
+        plugins = [ "git" "sudo" "pip" ];
+      };
+      spaceship-prompt.enable = true;
+      shellInit = ''
+        fpath+="${libDir}/functions"
+        for file in "${libDir}/functions/"*
+        do
+            autoload "''${file##*/}"
+        done
+      '';
+    };
+
+    environment = {
+      homeBinInPath = true;
+      localBinInPath = true;
+      extraInit = ''
+        export PATH="${libDir}/bin:$PATH"
+        export PATH="${libDir}/functions:$PATH"
+      '';
+    };
+  };
+}