Use emacsclient to update mu index to make sure the db isn't locked

modules/emacs.nix

@@ -1,32 +1,49 @@
 { config, lib, pkgs, ... }:
 
+let
+  emacsPkg = pkgs.emacsWithPackagesFromUsePackage {
+    config = ./emacs/init.el;
+    package = pkgs.emacsPgtk;
+    alwaysEnsure = true;
+    extraEmacsPackages = epkgs: [
+      # mu4e is included in the mu package and should be used from there
+      pkgs.mu
+    ];
+  };
+in
 {
   options.chvp.emacs = {
     enable = lib.mkOption {
       default = true;
       example = false;
     };
+    package = lib.mkOption { };
   };
 
   config = lib.mkIf config.chvp.emacs.enable {
+    chvp = {
+      emacs.package = emacsPkg;
+      zfs.homeLinks = [
+        { path = ".emacs.d"; type = "cache"; }
+      ];
+    };
+
     home-manager.users.charlotte = { ... }: {
-      programs.emacs = {
+      services.emacs = {
         enable = true;
-        package = pkgs.emacsWithPackagesFromUsePackage {
-          config = ./emacs/init.el;
-          package = pkgs.emacsPgtk;
-          alwaysEnsure = true;
-          extraEmacsPackages = epkgs: [
-            # mu4e is included in the mu package and should be used from there
-            pkgs.mu
-          ];
-        };
+        client.enable = true;
+        package = emacsPkg;
       };
       home = {
         file = {
           ".emacs.d/early-init.el".source = ./emacs/early-init.el;
           ".emacs.d/init.el".source = ./emacs/init.el;
         };
+        packages = [
+          (pkgs.writeShellScriptBin "emacs" ''
+            ${emacsPkg}/bin/emacsclient -c $@
+          '')
+        ];
         sessionVariables = { EDITOR = "emacs"; };
       };
     };