vim.lsp.handlers['textDocument/publishDiagnostics'] = vim.lsp.with(vim.lsp.diagnostic.on_publish_diagnostics, {
  virtual_text = {
    prefix = '●', -- Could be '■', '▎', 'x'
		source = 'always',
  },
  -- signs = true,
  underline = false,
  update_in_insert = false,
})

vim.cmd [[
  sign define LspDiagnosticsSignError text= texthl= linehl= numhl=LspDiagnosticsLineNrError
  sign define LspDiagnosticsSignWarning text= texthl= linehl= numhl=LspDiagnosticsLineNrWarning
  sign define LspDiagnosticsSignInfo text= texthl= linehl= numhl=LspDiagnosticsLineNrInformation
  sign define LspDiagnosticsSignHint text= texthl= linehl= numhl=LspDiagnosticsLineNrHint
]]