Only create dock entries when directory path exists

modules/darwin/dock/default.nix

@@ -1,4 +1,9 @@
-{ config, pkgs, lib, ... }:
+{
+  config,
+  pkgs,
+  lib,
+  ...
+}:
 
 # Original source: https://gist.github.com/antifuchs/10138c4d838a63c0a05e725ccd7bccdd
 
@@ -15,10 +20,11 @@ in
       example = false;
     };
 
-    local.dock.entries = mkOption
-      {
+    local.dock.entries = mkOption {
       description = "Entries on the Dock";
-        type = with types; listOf (submodule {
+      type =
+        with types;
+        listOf (submodule {
           options = {
             path = lib.mkOption { type = str; };
             section = lib.mkOption {
@@ -35,32 +41,56 @@ in
     };
   };
 
-  config =
-    mkIf cfg.enable
-      (
+  config = mkIf cfg.enable (
     let
       normalize = path: if hasSuffix ".app" path then path + "/" else path;
-          entryURI = path: "file://" + (builtins.replaceStrings
-            [" "   "!"   "\""  "#"   "$"   "%"   "&"   "'"   "("   ")"]
-            ["%20" "%21" "%22" "%23" "%24" "%25" "%26" "%27" "%28" "%29"]
+      entryURI =
+        path:
+        "file://"
+        + (builtins.replaceStrings
+          [
+            " "
+            "!"
+            "\""
+            "#"
+            "$"
+            "%"
+            "&"
+            "'"
+            "("
+            ")"
+          ]
+          [
+            "%20"
+            "%21"
+            "%22"
+            "%23"
+            "%24"
+            "%25"
+            "%26"
+            "%27"
+            "%28"
+            "%29"
+          ]
           (normalize path)
         );
-          wantURIs = concatMapStrings
-            (entry: "${entryURI entry.path}\n")
-            cfg.entries;
-          createEntries = concatMapStrings
-            (entry: "${dockutil}/bin/dockutil --no-restart --add '${entry.path}' --section ${entry.section} ${entry.options}\n")
-            cfg.entries;
+      wantURIs = concatMapStrings (entry: "${entryURI entry.path}\n") cfg.entries;
+      createEntries = concatMapStrings (
+        entry:
+        "if [ -d '${entry.path}' ]; then ${dockutil}/bin/dockutil --no-restart --add '${entry.path}' --section ${entry.section} ${entry.options} ; fi \n "
+      ) cfg.entries;
     in
     {
       system.activationScripts.postUserActivation.text = ''
         echo >&2 "Setting up the Dock..."
         haveURIs="$(${dockutil}/bin/dockutil --list | ${pkgs.coreutils}/bin/cut -f2)"
         if ! diff -wu <(echo -n "$haveURIs") <(echo -n '${wantURIs}') >&2 ; then
+        {
           echo >&2 "Resetting Dock."
           ${dockutil}/bin/dockutil --no-restart --remove all
           ${createEntries}
           killall Dock
+          }
         else
           echo >&2 "Dock setup complete."
         fi