diff --git a/pkgs/applications/editors/emacs/default.nix b/pkgs/applications/editors/emacs/default.nix
index b82f97e445f6..67afdb24cd47 100644
--- a/pkgs/applications/editors/emacs/default.nix
+++ b/pkgs/applications/editors/emacs/default.nix
@@ -40,6 +40,12 @@ stdenv.mkDerivation rec {
     ./clean-env.patch
   ];
 
+  postPatch = lib.optionalString srcRepo ''
+    rm -fr .git
+  '';
+
+  CFLAGS = "-DMAC_OS_X_VERSION_MAX_ALLOWED=101200";
+
   nativeBuildInputs = [ pkgconfig ]
     ++ lib.optionals srcRepo [ autoconf automake texinfo ]
     ++ lib.optional (withX && (withGTK3 || withXwidgets)) wrapGAppsHook;