Install direnv.

nix/configuration/roles/zsh/default.nix

@@ -49,6 +49,8 @@ let
 
       source ${pkgs.zsh-histdb}/share/zsh/plugins/zsh-histdb/histdb-interactive.zsh
       bindkey '^r' _histdb-isearch
+
+      ${lib.concatMapStringsSep "\n" (item: "source ${item}") config.me.zsh.includes}
     '';
   };
 in
@@ -62,6 +64,16 @@ in
       example = true;
       description = "Whether we want to install zsh.";
     };
+    zsh.includes = lib.mkOption {
+      type = lib.types.listOf lib.types.package;
+      default = [ ];
+      example = lib.literalExpression ''
+        [ (pkgs.writeTextFile {
+            name = "launch-kanshi.conf";
+            text = "exec kanshi";
+          }) ]'';
+      description = "List of zshrc files to import.";
+    };
   };
 
   config = lib.mkIf config.me.zsh.enable (