nvim: Disable marksman lsp in zk notebook directories

When a `.zk` directory is found in the current root directory of the
marksman project, the lsp is disabled.

This is because zk delivers its own lsp server with correct following of
note ids instead of full file names which marksman expects and fails to
find.

nvim/.config/nvim/lua/plugins/config/lsp.lua

@@ -35,9 +35,7 @@ local servers = {
 			},
 		},
 	},
-	marksman = {
-		filetypes = { "markdown", "quarto" },
-	},
+	marksman = {},
 	basedpyright = {},
 	ruff = {},
 	serve_d = {},
@@ -157,6 +155,25 @@ lsp.setup({
 local lspconfig = require("lspconfig")
 lspconfig.nushell.setup({})
 
+lspconfig.marksman.setup({
+	filetypes = { "markdown", "quarto" },
+	on_attach = function(client, bufnr)
+		-- TODO: for some reason this is always true even though it shouldn't be
+		if client.config.in_zk_notebook then
+		    vim.defer_fn(function()
+			    vim.lsp.buf_detach_client(bufnr, client.id)
+		    end, 1000)
+		end
+	end,
+	on_new_config = function(conf, new_root)
+		if require("lspconfig.util").root_pattern(".zk")(new_root) then
+			conf.in_zk_notebook = true
+		else
+			conf.in_zk_notebook = false
+		end
+	end,
+})
+
 local python_path
 -- ensure python virtualenv is determined automatically on lsp start
 lspconfig.basedpyright.setup({