nvim: redo LSP setup to be simpler

now uses more of the built-in LSP functionality built into neovim.

- LSP configurations from the official repo
- downloads LSPs from nix using lazy-lsp
- autocomplete using blink.cmp
- show status using fidget.nvim

stow/.config/nvim/lua/nico/lazy/blink.lua

@@ -0,0 +1,29 @@
+return {
+  'saghen/blink.cmp',
+  dependencies = { 'rafamadriz/friendly-snippets' },
+
+  -- use a release tag to download pre-built binaries
+  version = '1.*',
+  -- AND/OR build from source, requires nightly: https://rust-lang.github.io/rustup/concepts/channels.html#working-with-nightly-rust
+  -- build = 'cargo build --release',
+  -- If you use nix, you can build from source using latest nightly rust with:
+  -- build = 'nix run .#build-plugin',
+
+  opts = {
+    keymap = { preset = 'default' },
+
+    appearance = {
+      nerd_font_variant = 'mono'
+    },
+
+    -- (Default) Only show the documentation popup when manually triggered
+    completion = { documentation = { auto_show = false } },
+
+    sources = {
+      default = { 'lsp', 'path', 'snippets', 'buffer' },
+    },
+
+    fuzzy = { implementation = "prefer_rust_with_warning" }
+  },
+  opts_extend = { "sources.default" }
+}

stow/.config/nvim/lua/nico/lazy/lsp.lua

@@ -1,102 +1,22 @@
 return {
-    "neovim/nvim-lspconfig",
-    dependencies = {
-        "hrsh7th/cmp-nvim-lsp",
-        "hrsh7th/cmp-buffer",
-        "hrsh7th/cmp-path",
-        "hrsh7th/cmp-cmdline",
-        "hrsh7th/nvim-cmp",
-        "L3MON4D3/LuaSnip",
-        "saadparwaiz1/cmp_luasnip",
-        "j-hui/fidget.nvim",
-        "dundalek/lazy-lsp.nvim",
-    },
+  "neovim/nvim-lspconfig",
+  dependencies = {
+    "j-hui/fidget.nvim",      -- lsp status
+    "dundalek/lazy-lsp.nvim", -- load LSPs from nix
+  },
+  config = function()
+    require("fidget").setup {}
+    require("lazy-lsp").setup {}
 
-    config = function()
-        local cmp = require('cmp')
-        local cmp_lsp = require("cmp_nvim_lsp")
-        local capabilities = vim.tbl_deep_extend(
-            "force",
-            {},
-            vim.lsp.protocol.make_client_capabilities(),
-            cmp_lsp.default_capabilities())
-
-        require("fidget").setup({})
-
-        require("lazy-lsp").setup {
-          -- By default all available servers are set up. Exclude unwanted or misbehaving servers.
-          excluded_servers = {
-            "ccls", "zk", "bufls", "ruff_lsp"
-          },
-          -- Alternatively specify preferred servers for a filetype (others will be ignored).
-          preferred_servers = {
-            markdown = {},
-            python = { "pyright" },
-            nix = { "nil_ls" },
-            rust = { "rust_analyzer" },
-            go = { "gopls" },
-            c = { "clangd" },
-          },
-          prefer_local = true, -- Prefer locally installed servers over nix-shell
-          -- Default config passed to all servers to specify on_attach callback and other options.
-          default_config = {
-            flags = {
-              debounce_text_changes = 150,
-            },
-            -- on_attach = on_attach,
-            -- capabilities = capabilities,
-          },
-          -- Override config for specific servers that will passed down to lspconfig setup.
-          -- Note that the default_config will be merged with this specific configuration so you don't need to specify everything twice.
-          configs = {
-            lua_ls = {
-              settings = {
-                Lua = {
-                  diagnostics = {
-                    -- Get the language server to recognize the `vim` global
-                    globals = { "vim" },
-                  },
-                },
-              },
-            },
-          },
-        }
-
-
-        local cmp_select = { behavior = cmp.SelectBehavior.Select }
-
-        cmp.setup({
-            snippet = {
-                expand = function(args)
-                    require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
-                end,
-            },
-            mapping = cmp.mapping.preset.insert({
-                ['<C-k>'] = cmp.mapping.select_prev_item(cmp_select),
-                ['<C-j>'] = cmp.mapping.select_next_item(cmp_select),
-                ['<A-Enter>'] = cmp.mapping.confirm({ select = true }),
-                ["<C-Space>"] = cmp.mapping.complete(),
-                ['<C-x>'] = cmp.mapping.scroll_docs(-4),
-                ['<C-z>'] = cmp.mapping.scroll_docs(4),
-            }),
-            sources = cmp.config.sources({
-                { name = 'nvim_lsp' },
-                { name = 'luasnip' }, -- For luasnip users.
-            }, {
-                { name = 'buffer' },
-            })
-        })
-
-        vim.diagnostic.config({
-            -- update_in_insert = true,
-            float = {
-                focusable = false,
-                style = "minimal",
-                border = "rounded",
-                source = "always",
-                header = "",
-                prefix = "",
-            },
-        })
-    end
+    vim.lsp.enable({
+      'gopls',         -- go
+      'pyright',       -- python
+      'lua_ls',        -- lua
+      'rust-analyzer', -- rust
+      'nil_ls',        -- nix
+      'bashls',        -- bash
+      'html',          -- html
+      'cssls',         -- css
+    })
+  end,
 }