Actually the restart command isn't that great.

nix/base-system/init.lua

@@ -375,8 +375,3 @@ vim.keymap.set("n", "<Leader>rr", vim.lsp.codelens.run)
 
 -- Show whatever errors we have in our trouble pane
 vim.keymap.set("n", "<Leader>se", "<cmd>TroubleToggle<cr>", { silent = true, noremap = true })
-
-vim.api.nvim_create_user_command("LspRestart", function()
-    vim.lsp.stop_client(vim.lsp.get_active_clients())
-    vim.cmd("edit")
-end, {})

nix/darwin/flake.lock

@@ -34,12 +34,12 @@
       },
       "locked": {
         "lastModified": 1,
-        "narHash": "sha256-XK2JhfLtXZTNOvCsQneGtoMTJ+1OypeZuTwqe4Vfj5o=",
-        "path": "/nix/store/c42xfjgbyhii3n7djvmfkzn5ic6yimj1-source/nix/base-system",
+        "narHash": "sha256-NrEKLtKqw6lOwfxz2f8OAScfVPzdsZz849sAceUrOk4=",
+        "path": "/nix/store/6s1z7nf9wb66a3gcx0fvjdbhm05bmcx4-source/nix/base-system",
         "type": "path"
       },
       "original": {
-        "path": "/nix/store/c42xfjgbyhii3n7djvmfkzn5ic6yimj1-source/nix/base-system",
+        "path": "/nix/store/6s1z7nf9wb66a3gcx0fvjdbhm05bmcx4-source/nix/base-system",
         "type": "path"
       }
     },