nvim: Switch to lsp-zero

lsp-zero offers a simple to set-up lsp configuration which is based
around the plugins I use anyway (lsp, cmp, luasnip) but integrates them
very well. I add a few small quality of life things on top (cmp
completion for / search and for vim command mode) as well as a boatload
of custom completion sources but otherwise make use of the nice presets.

This has de-bloated my _cmp.lua settings somewhat and allows me to have
a simple treesitter and a simple(r) lsp setup!

Additionally, switched to mason.nvim to manage my lsp sources (and
linters), which is both the new hotness and actually really useful.
Allows portable installation of most lsp servers into neovim data
directory so they do not clutter any other directories or global
namespaces.

nvim/.config/nvim/lazy-lock.json

@@ -1,5 +1,6 @@
 {
   "BetterLua.vim": { "branch": "master", "commit": "d2d6c115575d09258a794a6f20ac60233eee59d5" },
+  "LuaSnip": { "branch": "master", "commit": "500981ff6cefc7343e3959ef0f939bd0bfd49ba9" },
   "Navigator.nvim": { "branch": "master", "commit": "91d86506ac2a039504d5205d32a1d4bc7aa57072" },
   "bats.vim": { "branch": "master", "commit": "6a5d2ef22b0ede503d867770afd02ebb1f97b709" },
   "cmp-buffer": { "branch": "main", "commit": "3022dbc9166796b644a841a02de8dd1cc1d311fa" },
@@ -12,7 +13,7 @@
   "cmp-spell": { "branch": "master", "commit": "60584cb75e5e8bba5a0c9e4c3ab0791e0698bffa" },
   "cmp-tmux": { "branch": "main", "commit": "984772716f66d8ee88535a6bf3f94c4b4e1301f5" },
   "cmp-treesitter": { "branch": "master", "commit": "b40178b780d547bcf131c684bc5fd41af17d05f2" },
-  "cmp-vsnip": { "branch": "main", "commit": "989a8a73c44e926199bfd05fa7a516d51f2d2752" },
+  "cmp_luasnip": { "branch": "master", "commit": "18095520391186d634a0045dacaa346291096566" },
   "completion-vcard": { "branch": "master", "commit": "2220fd517a985ececed1adcf0e5be8f2815564c7" },
   "dial.nvim": { "branch": "master", "commit": "5020da900cc5dfd7067f181ee2ebd872ca7c84e8" },
   "formatter.nvim": { "branch": "master", "commit": "8a4c961330cc4688087f23d18fa7d2f1af9a4902" },
@@ -21,11 +22,14 @@
   "guihua.lua": { "branch": "master", "commit": "d3f6d01639b52e6a83ea98dd6ca244c9aa98b79b" },
   "lazy.nvim": { "branch": "main", "commit": "273081443471cbc52c327bcb99614c32f247998d" },
   "lightspeed.nvim": { "branch": "main", "commit": "299eefa6a9e2d881f1194587c573dad619fdb96f" },
+  "lsp-format.nvim": { "branch": "master", "commit": "ca0df5c8544e51517209ea7b86ecc522c98d4f0a" },
+  "lsp-zero.nvim": { "branch": "main", "commit": "42bc5a1081666098a7154532e6ff5e3edc483b39" },
   "lsp_signature.nvim": { "branch": "master", "commit": "6f6252f63b0baf0f2224c4caea33819a27f3f550" },
-  "lspkind-nvim": { "branch": "master", "commit": "c68b3a003483cf382428a43035079f78474cd11e" },
   "lualine.nvim": { "branch": "master", "commit": "0050b308552e45f7128f399886c86afefc3eb988" },
   "magma-nvim-goose": { "branch": "main", "commit": "94370733757d550594fe4a1d65643949d7485989" },
   "markdown-preview.nvim": { "branch": "master", "commit": "02cc3874738bc0f86e4b91f09b8a0ac88aef8e96" },
+  "mason-lspconfig.nvim": { "branch": "main", "commit": "7a97a77eee486ae152d2c559a459eda7c8aa12aa" },
+  "mason.nvim": { "branch": "main", "commit": "14ae1ca58440b158a0a35cf90773013caddf788a" },
   "mini.nvim": { "branch": "main", "commit": "dc0ccf1b0499d649a6177d2a406babcfe73b97de" },
   "nabla.nvim": { "branch": "master", "commit": "ddbfc6e244e79db9280c535ee85c81388c5d1b46" },
   "navigator.lua": { "branch": "master", "commit": "66d84151e94052f710b1dfb0d1fce2faaca6dced" },
@@ -63,7 +67,6 @@
   "vim-pandoc": { "branch": "master", "commit": "9f406d964ca70d959b7867f1b5cee3d4884d4d3c" },
   "vim-pandoc-syntax": { "branch": "master", "commit": "4268535e1d33117a680a91160d845cd3833dfe28" },
   "vim-spellsync": { "branch": "master", "commit": "27e103f2d283a1f6e24cc99dbdcd624713aff277" },
-  "vim-vsnip": { "branch": "master", "commit": "8dde8c0ef10bb1afdbb301e2bd7eb1c153dd558e" },
   "which-key.nvim": { "branch": "main", "commit": "684e96c5e8477f1ee9b3f2e9a12d802fd12c5531" },
   "zen-mode.nvim": { "branch": "main", "commit": "3c92f503823088862ca2a7809d1c7edc90fb92fa" },
   "zettelkasten.nvim": { "branch": "main", "commit": "0e77624689b470410f5355b613d45219c9350264" }

nvim/.config/nvim/lua/plug/_cmp.lua

@@ -1,95 +1,40 @@
+local lsp = require("lsp-zero")
+lsp.preset("recommended")
+lsp.on_attach(function(client, bufnr)
+    require("lsp-format").on_attach(client, bufnr)
+end)
+lsp.nvim_workspace()
+lsp.setup_nvim_cmp({
+    sources = {
+        { name = 'path' }, { name = 'nvim_lsp', keyword_length = 2 },
+        { name = 'buffer',  keyword_length = 3 },
+        { name = 'luasnip', keyword_length = 2 }, { name = 'tmux' },
+        { name = 'otter' }, { name = 'latex_symbols' }, { name = 'vCard' },
+        { name = 'nvim_lua' }, { name = 'buffer' }, { name = 'spell' }
+    },
+    documentation = {
+        max_height = 50,
+        max_width = 90,
+        border = 'rounded',
+        col_offset = 0,
+        side_padding = 1,
+        winhighlight = 'Normal:Normal,FloatBorder:Normal,CursorLine:Visual,Search:None',
+        zindex = 1001
+    }
+})
+lsp.setup()
+vim.diagnostic.config { virtual_text = true }
+
 local cmp = require 'cmp'
-local lspkind = require 'lspkind'
-
-local has_words_before = function()
-    local line, col = unpack(vim.api.nvim_win_get_cursor(0))
-    return col ~= 0 and
-        vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col,
-            col)
-        :match("%s") == nil
-end
-
-local feedkey = function(key, mode)
-    vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes(key, true, true, true),
-        mode, true)
-end
-
-vim.o.completeopt = "menu,menuone,noselect"
-
--- completion items
-require('cmp').register_source('vCard', require('completion_vcard').setup_cmp(
-    '~/documents/contacts/myconts'))
-vim.g.vsnip_snippet_dir = (vim.env.XDG_DATA_HOME or "~/.local/share") ..
-    "/nvim/snippets"
-cmp.setup({
-    snippet = { expand = function(args) vim.fn["vsnip#anonymous"](args.body) end },
-    mapping = {
-        ['<C-b>'] = cmp.mapping(cmp.mapping.scroll_docs(-4), { 'i', 'c' }),
-        ['<C-f>'] = cmp.mapping(cmp.mapping.scroll_docs(4), { 'i', 'c' }),
-        ['<C-Space>'] = cmp.mapping(cmp.mapping.complete(), { 'i', 'c' }),
-        ['<C-y>'] = cmp.config.disable, -- Specify `cmp.config.disable` if you want to remove the default `<C-y>` mapping.
-        ['<C-e>'] = cmp.mapping({
-            i = cmp.mapping.abort(),
-            c = cmp.mapping.close()
-        }),
-        -- Accept currently selected item. If none selected, `select` first item.
-        -- Set `select` to `false` to only confirm explicitly selected items.
-        ['<CR>'] = cmp.mapping.confirm({ select = false }),
-        ["<C-n>"] = cmp.mapping(function(fallback)
-            if cmp.visible() then
-                cmp.select_next_item()
-            elseif vim.fn["vsnip#available"](1) == 1 then
-                feedkey("<Plug>(vsnip-expand-or-jump)", "")
-            elseif has_words_before() then
-                cmp.complete()
-            else
-                fallback()
-            end
-        end, { "i", "s" }),
-
-        ["<C-p>"] = cmp.mapping(function()
-            if cmp.visible() then
-                cmp.select_prev_item()
-            elseif vim.fn["vsnip#jumpable"](-1) == 1 then
-                feedkey("<Plug>(vsnip-jump-prev)", "")
-            end
-        end, { "i", "s" })
-    },
-    formatting = {
-        format = lspkind.cmp_format({
-            with_text = false,
-            menu = ({
-                buffer = "B",
-                nvim_lua = "NLua",
-                tmux = "τ",
-                vCard = "VCARD"
-            })
-        })
-    },
-    sources = cmp.config.sources({
-        { name = 'path' }, { name = 'nvim_lsp' }, { name = 'treesitter' },
-        { name = 'tmux' }, { name = 'vsnip' }, { name = 'otter' },
-        { name = 'latex_symbols' }, { name = 'vCard' }, { name = 'nvim_lua' }
-    }, { { name = 'buffer' }, { name = 'spell' } })
-})
-
-if vim.o.ft == 'clap_input' and vim.o.ft == 'guihua' and vim.o.ft ==
-    'guihua_rust' then require 'cmp'.setup.buffer { completion = { enable = false } } end
-
--- set up pandoc bibtex source generation
-require 'cmp_pandoc'.setup()
-
--- Use buffer source for `/` search
+-- `/` cmdline setup.
 cmp.setup.cmdline('/', {
     mapping = cmp.mapping.preset.cmdline(),
-    sources = cmp.config.sources({ { name = 'buffer' } })
+    sources = { { name = 'buffer' } }
 })
-
--- Use cmdline & path source for ':' in vim
+-- `:` cmdline setup.
 cmp.setup.cmdline(':', {
     mapping = cmp.mapping.preset.cmdline(),
-    sources = cmp.config.sources({ { name = 'path' } }, { { name = 'cmdline' } })
+    sources = cmp.config.sources({ { name = 'path' } }, {
+        { name = 'cmdline', option = { ignore_cmds = { 'Man', '!' } } }
+    })
 })
-
-require('cmp_nvim_lsp').default_capabilities(vim.lsp.protocol
-    .make_client_capabilities())

nvim/.config/nvim/lua/plugins.lua

@@ -108,8 +108,7 @@ return {
         'echasnovski/mini.nvim',
         version = '*',
         config = function() require('plug._mini') end
-    }, 
-    {
+    }, {
     "akinsho/nvim-toggleterm.lua", -- simpler, programmable and multiple terminal toggling for nvim
     config = function() require('plug._toggleterm') end,
     event = "BufWinEnter"
@@ -129,10 +128,7 @@ return {
     "nvim-telescope/telescope.nvim",
     dependencies = { "nvim-lua/popup.nvim", "nvim-lua/plenary.nvim" },
     config = function() require('plug._telescope') end
-    }, -- snippeting
-    {"hrsh7th/vim-vsnip", event = "InsertEnter"}, -- snippet engine
-    {"rafamadriz/friendly-snippets", event = "InsertEnter"}, -- many snippets
-    -- treesitter
+}, -- treesitter
     {
         'nvim-treesitter/nvim-treesitter',
         build = ':TSUpdate',
@@ -160,12 +156,25 @@ return {
         config = function() require('spellsitter').setup() end,
         event = "BufReadPre"
     }, -- lsp
-    {'neovim/nvim-lspconfig', event = "VeryLazy"}, -- some common language server configurations
     {
-        'simrat39/symbols-outline.nvim',
-        config = function() require('symbols-outline').setup() end,
-        event = "VeryLazy"
-    }, -- vista-like outline view for code
+        "VonHeikemen/lsp-zero.nvim",
+        dependencies = {
+            "neovim/nvim-lspconfig", "williamboman/mason.nvim",
+            "williamboman/mason-lspconfig.nvim", "hrsh7th/nvim-cmp",
+            "hrsh7th/cmp-buffer", "hrsh7th/cmp-path",
+            "saadparwaiz1/cmp_luasnip", "hrsh7th/cmp-nvim-lsp",
+            "hrsh7th/cmp-nvim-lua", "L3MON4D3/LuaSnip",
+            "rafamadriz/friendly-snippets", "andersevenrud/cmp-tmux",
+            "hrsh7th/cmp-nvim-lsp", "kdheepak/cmp-latex-symbols",
+            "ray-x/cmp-treesitter", "f3fora/cmp-spell", "hrsh7th/cmp-cmdline",
+            "cbarrete/completion-vcard", {
+            'aspeddro/cmp-pandoc.nvim',
+            dependencies = { 'nvim-lua/plenary.nvim', 'jbyuki/nabla.nvim' },
+            event = "InsertEnter"
+        }, { "lukas-reineke/lsp-format.nvim", config = true }
+        },
+        config = function() require('plug._cmp') end
+    }, { 'simrat39/symbols-outline.nvim', config = true,         event = "VeryLazy" }, -- vista-like outline view for code
     { 'ray-x/lsp_signature.nvim',      event = "VeryLazy" },
     { 'ray-x/guihua.lua',              build = 'cd lua/fzy && make', event = "VeryLazy" }, {
     'ray-x/navigator.lua',
@@ -173,29 +182,14 @@ return {
     event = "VeryLazy"
 }, -- and completion
     {
-        'hrsh7th/nvim-cmp', -- simple completion engine built specifically for nvim and lsp
-        dependencies = {
-            'onsails/lspkind-nvim', 'andersevenrud/cmp-tmux', -- completion source from adjacent tmux panes
-            'hrsh7th/cmp-nvim-lsp', 'hrsh7th/cmp-buffer', 'hrsh7th/cmp-path',
-            'hrsh7th/cmp-cmdline', 'hrsh7th/cmp-vsnip', 'hrsh7th/cmp-nvim-lua',
-            'kdheepak/cmp-latex-symbols', 'ray-x/cmp-treesitter',
-            'f3fora/cmp-spell', 'cbarrete/completion-vcard'
-        },
-        event = "VeryLazy",
-        config = function() require('plug._cmp') end
-    }, {
-        'aspeddro/cmp-pandoc.nvim',
-        dependencies = {'nvim-lua/plenary.nvim', 'jbyuki/nabla.nvim'},
-        event = "VeryLazy"
-    }, {
         "jghauser/papis.nvim",
         after = { "telescope.nvim", "nvim-cmp" },
         dependencies = {
             "kkharji/sqlite.lua", "nvim-lua/plenary.nvim",
             "MunifTanjim/nui.nvim", "nvim-treesitter/nvim-treesitter"
         },
-        event = "VeryLazy",
+        ft = writing_ft,
         rocks = { "lyaml" },
-        config = function() require("papis").setup({}) end
+        config = true
     }
 }