Add a rounded border to every float in LazyVim

To make your Neovim a little prettier, it's nice for every floating window to have a coherent border style. To do this we'll need to modify a view things. For some of them, I also set the backdrop to be completely transparent, so it looks like the floats end where the actual line is and not where the character ends.

Lazy

lazy.nvim itself doesn't use rounded borders by default for its floats like :Lazy or :LazyExtras.

-- config/lazy.lua

require("lazy").setup({
  ui = {
    border = "rounded",
    backdrop = 100,
  },
})

Snacks

snacks.nvim is a collection of small plugins. It's terminal floats and floats in general have no rounded border.

-- plugins/snacks.nvim

  "folke/snacks.nvim",
  opts = {
    terminal = {
      border = "rounded",
    },
    styles = {
      float = {
        backdrop = 100,
        border = "rounded",
      },
    },
  },
}

Mason

mason.nvim is a package manager for LSP servers and some other things. The only float it uses is the one used to manage installed packages (:Mason).

-- plugings/mason.lua

return {
  "williamboman/mason.nvim",
  opts = {
    ui = {
      border = "rounded",
    },
  },
}

Noice

noice.nvim replaces a couple of UI elements and makes them prettier; including the hover docs and signature help.

-- plugins/noice.lua

return {
  "folke/noice.nvim",
  opts = function(_, opts)
    opts.presets.lsp_doc_border = true
  end,
}

Nvim-Lspconfig

nvim-lspconfig is used for the configuration of Neovim's native LSP client. Here we need to edit the floats that show diagnostics.

-- nvim-lspconfig.lua

return {
  "neovim/nvim-lspconfig",
  opts = {
    diagnostics = {
      float = {
        border = "rounded",
      },
    },
  },
}

Blink

blink.cmp is the completion menu that is used for showing suggestions and their documentation. The border of the menu has the wrong color so we also need to set that.

-- plugins/blink.lua

return {
  "saghen/blink.cmp",
  opts = {
    completion = {
      menu = {
        border = "rounded",
        winhighlight = "Normal:BlinkCmpDoc,FloatBorder:BlinkCmpDocBorder,CursorLine:BlinkCmpMenuSelection,Search:None",
      },
      documentation = {
        window = {
          border = "rounded",
        },
      },
    },
  },
}

Extras

If you're using tokyonight.nvim you can also make the sidebars and floats transparent, so they don't have a darker background like it's shown in the recipes section.

--- plugins/tokyonight.lua

{
  "folke/tokyonight.nvim",
  opts = {
    transparent = true,
    styles = {
      sidebars = "transparent",
      floats = "transparent",
    },
  },
}