Merge pull request #165 from jordanisaacs/site-start

feat(build): allow extra site-start elisp

Author: akirak

pkgs/emacs/default.nix

@@ -40,6 +40,7 @@
   # (experimental). Needed if you use the hot-reloading feature of twist.el.
   exportManifest ? false,
   configurationRevision ? null,
+  extraSiteStartElisp ? "",
 }: let
   inherit
     (builtins)
@@ -213,7 +214,7 @@ in
       self.callPackage ./wrapper.nix
       {
         packageNames = attrNames packageInputs;
-        inherit extraOutputsToInstall exportManifest configurationRevision;
+        inherit extraOutputsToInstall exportManifest configurationRevision extraSiteStartElisp;
       };
 
     # This makes the attrset a derivation for a shorthand.

pkgs/emacs/wrapper.nix

@@ -13,6 +13,7 @@
   extraOutputsToInstall,
   exportManifest,
   configurationRevision,
+  extraSiteStartElisp,
 }: let
   inherit (builtins) length listToAttrs;
 
@@ -101,7 +102,8 @@ in
           (load "${pkg}/share/emacs/site-lisp/${pkg.ename}-autoloads.el" t t)
         '')
         elispInputs
-      })
+        })
+      ${extraSiteStartElisp}
     '';
 
     elispManifestPath =