nvim: swap mason with lazy-lsp for lsp installation

we don't need language-specific package managers in path now eg. cargo,
pip, npm, etc. this is done in a more "nix" way.

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

@@ -1,8 +1,6 @@
 return {
     "neovim/nvim-lspconfig",
     dependencies = {
-        "williamboman/mason.nvim",
-        "williamboman/mason-lspconfig.nvim",
         "hrsh7th/cmp-nvim-lsp",
         "hrsh7th/cmp-buffer",
         "hrsh7th/cmp-path",
@@ -11,6 +9,7 @@ return {
         "L3MON4D3/LuaSnip",
         "saadparwaiz1/cmp_luasnip",
         "j-hui/fidget.nvim",
+        "dundalek/lazy-lsp.nvim",
     },
 
     config = function()
@@ -23,38 +22,44 @@ return {
             cmp_lsp.default_capabilities())
 
         require("fidget").setup({})
-        require("mason").setup()
-        require("mason-lspconfig").setup({
-            ensure_installed = {
-                "gopls",
-                "pyright",
-                "bashls",
-                "cssls",
-                "html",
+
+        require("lazy-lsp").setup {
+          -- By default all available servers are set up. Exclude unwanted or misbehaving servers.
+          excluded_servers = {
+            "ccls", "zk",
+          },
+          -- Alternatively specify preferred servers for a filetype (others will be ignored).
+          preferred_servers = {
+            markdown = {},
+            python = { "pyright" },
+            rust = { "nil" },
+            go = { "gopls" },
+          },
+          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,
             },
-            handlers = {
-                function(server_name) -- default handler (optional)
+            -- 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" },
+                  },
+                },
+              },
+            },
+          },
+        }
 
-                    require("lspconfig")[server_name].setup {
-                        capabilities = capabilities
-                    }
-                end,
-
-                ["lua_ls"] = function()
-                    local lspconfig = require("lspconfig")
-                    lspconfig.lua_ls.setup {
-                        capabilities = capabilities,
-                        settings = {
-                            Lua = {
-                                diagnostics = {
-                                    globals = { "vim", "it", "describe", "before_each", "after_each" },
-                                }
-                            }
-                        }
-                    }
-                end,
-            }
-        })
 
         local cmp_select = { behavior = cmp.SelectBehavior.Select }