LunarVim/ftplugin/ruby.lua

O.formatters.filetype["ruby"] = {
  function()
    return {
      exe = O.lang.ruby.formatter.exe,
      args = O.lang.ruby.formatter.args,
      stdin = not (O.lang.ruby.formatter.stdin ~= nil),
    }
  end,
}

require("formatter.config").set_defaults {
  logging = false,
  filetype = O.formatters.filetype,
}
if require("lv-utils").check_lsp_client_active "solargraph" then
  return
end

-- If you are using rvm, make sure to change below configuration
require("lspconfig").solargraph.setup {
  cmd = { DATA_PATH .. "/lspinstall/ruby/solargraph/solargraph", "stdio" },
  on_attach = require("lsp").common_on_attach,
  handlers = {
    ["textDocument/publishDiagnostics"] = vim.lsp.with(vim.lsp.diagnostic.on_publish_diagnostics, {
      virtual_text = O.lang.ruby.diagnostics.virtual_text,
      signs = O.lang.ruby.diagnostics.signs,
      underline = O.lang.ruby.diagnostics.underline,
      update_in_insert = true,
    }),
  },
  filetypes = O.lang.ruby.filetypes,
}