LSP diagnostics is not colored

[coder3101]

I tried to use https://github.com/folke/lsp-colors.nvim but there is no color for LSP. I want errors to look red, warnings with yellow and so on.

[bluz71]

That plugin is not required since this theme does support the Neovim 0.6 and later Diagnostic module.

Please remove that plugin with this theme.

[coder3101]

I tried to use the plugin because the this theme did not automatically made the LSP diagnostics coloured. Even in the Readme screenshot the error at line 19 is not coloured.

[bluz71]

In the screenshot I disabled the underline setting due to personal preference.

If however, I enable Diagnostic underlines (for example):

vim.diagnostic.config({
  underline = true,
})

This is the result I obtain:

Notice the sign column has a yellow triangle and the warning itself has yellow undercurls.

The virtual text itself is in subtle grey because I do not want the text itself to distract from the code. If however you also want the virtual text coloured then just add the following to your Neovim init.lua:

local custom_highlight = vim.api.nvim_create_augroup("CustomHighlight", {})
vim.api.nvim_create_autocmd("ColorScheme", {
  pattern = "nightfly",
  callback = function()
    vim.api.nvim_set_hl(0, "DiagnosticVirtualTextError", { link = "NightflyRed" })
    vim.api.nvim_set_hl(0, "DiagnosticVirtualTextWarn", { link = "NightflyYellow" })
    vim.api.nvim_set_hl(0, "DiagnosticVirtualTextInfo", { link = "NightflyBlue" })
    vim.api.nvim_set_hl(0, "DiagnosticVirtualTextHint", { link = "NightflyWhite" })
  end,
  group = custom_highlight,
})

With that change, this is the style I now get:

The virtual text is now using the appropriate yellow color (in your case).

That change will override individual highlight groups with a user preference. This is now documented in the new overriding highlights section.

Cheers.

[coder3101]

Just to add for others, You have to create the auto command before setting the color scheme.

[bluz71]

A new option now exits to set colored diagnostic virtual text:

vim.g.nightflyVirtualTextColor = true

No workarounds required anymore. It turns out that a few folks wanted colored diagnostic virtual text.