Fix perlpls (update config to change deprecated settings)

init.vim

@@ -1041,6 +1041,7 @@ if $USER =~ "^jry$" && $HOSTNAME =~ "gnu"
 lua <<EOF
 
     local jix_lsp = require 'jix.lsp'
+    local util = require 'lspconfig.util'
 
     -- Mappings.
     -- See `:help vim.diagnostic.*` for documentation on any of the below functions
@@ -1067,9 +1068,9 @@ lua <<EOF
         -- Show signature for function under cursor (virker i skrivende stund ikke med subroutine signatures)
         --vim.keymap.set('n', '<C-f>', vim.lsp.buf.signature_help, bufopts)
         -- Format file with perltidy
-        vim.keymap.set('n', '<leader>f', vim.lsp.buf.formatting, bufopts)
+        vim.keymap.set('n', '<leader>f', function() vim.lsp.buf.format { async = true } end, bufopts)
         -- Format visual selection with perltidy
-        vim.keymap.set('v', '<leader>f', vim.lsp.buf.range_formatting, bufopts)
+        vim.keymap.set('v', '<leader>f', function() vim.lsp.buf.format { async = true } end, bufopts)
 
         -- Slå Neomake fra i buffer for at undgå dobbeltarbejde
         vim.api.nvim_command('silent NeomakeDisableBuffer')
@@ -1077,6 +1078,8 @@ lua <<EOF
 
     local config = {
         cmd = { 'jix-shell', 'pls' },
+        filetypes = { 'perl' },
+        root_dir = util.find_git_ancestor,
         settings = {
             -- Se https://metacpan.org/pod/PLS#OPTIONS for mulige options
             perl = {
@@ -1090,6 +1093,7 @@ lua <<EOF
                 perltidyrc = '~/jobxx/perltidyrc',
             },
         },
+        single_file_support = true,
         on_attach = on_attach,
         handlers = jix_lsp.handlers,
     }