[gopls]: gopls v0.22.0 by default don't advertise support for semantic tokens to client if semanticTokens option is not set at initialization

[krukroman]

Description

This issue created to address changes to gopls configuration, introduced in v0.22.0. Upstream issue golang/go#79524

Before version v.0.22.0 gopls advertised support for semantic tokens even if semanticTokens option was set to false on client side. Since v0.22.0 it is not true anymore, and neovim users will face problems with features that depend on semantic tokens.

Currently it is unclear if this change will be reverted or properly documented by gopls maintainers, so for now there is no reason to update gopls config.

As a temporary solution for users that use semantic tokens support will be downgrading gopls to v0.21.1, or use this workaround

vim.lsp.config("gopls", {
-- ... config ...
  init_options = {
    semanticTokens = true
  }
-- ...config ...
}