From 9bbe0077104e5e0dab8b1a8f197f7ce9bb240be4 Mon Sep 17 00:00:00 2001
From: Thomas Voss <mail@thomasvoss.com>
Date: Tue, 7 Nov 2023 13:39:23 +0100
Subject: nvim: Make LSP config more minimal

---
 .config/nvim/after/plugin/lsp.lua      | 84 ++++++++++++++++++----------------
 .config/nvim/after/plugin/nvim-cmp.lua | 31 +++++++++++++
 .config/nvim/lua/mango/packer.lua      | 39 +++++++++++-----
 3 files changed, 104 insertions(+), 50 deletions(-)
 create mode 100644 .config/nvim/after/plugin/nvim-cmp.lua

diff --git a/.config/nvim/after/plugin/lsp.lua b/.config/nvim/after/plugin/lsp.lua
index dcf98f1..12e1025 100644
--- a/.config/nvim/after/plugin/lsp.lua
+++ b/.config/nvim/after/plugin/lsp.lua
@@ -1,40 +1,46 @@
-local lsp = require('lsp-zero')
-local lib = require('mango.lib')
-
-lsp.preset('recommended')
-lsp.ensure_installed({
-	'clangd',
-	'gopls',
-	'rust_analyzer',
-})
-
-lsp.nvim_workspace()
-
-local cmp = require('cmp')
-local cmp_select = { behavior = cmp.SelectBehavior.Select }
-local cmp_mappings = lsp.defaults.cmp_mappings({
-	['<C-k>'] = cmp.mapping.select_prev_item(cmp_select),
-	['<C-j>'] = cmp.mapping.select_next_item(cmp_select),
-	['<CR>'] = cmp.mapping.confirm({ select = true }),
-	['<C-Space>'] = cmp.mapping.complete(),
-})
-
-lsp.set_preferences({
-	suggest_lsp_servers = false,
-	sign_icons = {}
+local conf = require('lspconfig')
+
+conf.clangd.setup {}
+conf.gopls.setup {}
+conf.rust_analyzer.setup {}
+conf.lua_ls.setup {
+	settings = {
+		Lua = {
+			runtime = {
+				version = 'LuaJIT',
+			},
+			diagnostics = {
+				globals = {
+					'vim',
+					'require',
+				},
+			},
+			workspace = {
+				library = vim.api.nvim_get_runtime_file('', true),
+			},
+			telemetry = {
+				enable = false,
+			},
+		},
+	},
+}
+
+vim.api.nvim_create_autocmd('LspAttach', {
+	group = vim.api.nvim_create_augroup('MangoLspConfig', {}),
+	callback = function(ev)
+		local function remap(mode, map, fn)
+			vim.keymap.set(mode, map, fn, { buffer = ev.buf })
+		end
+
+		vim.bo[ev.buf].omnifunc = 'v:lua.vim.lsp.omnifunc'
+		remap('n', 'K', vim.lsp.buf.hover)
+		remap('n', 'gd', vim.lsp.buf.definition)
+		remap('n', 'gi', vim.lsp.buf.implementation)
+		remap('n', 'gr', vim.lsp.buf.rename)
+		remap('n', 'gt', vim.lsp.buf.type_definition)
+		remap('n', 'g=', function() vim.lsp.buf.format { async = true } end)
+		remap('n', ']d', vim.diagnostic.goto_prev)
+		remap('n', '[d', vim.diagnostic.goto_next)
+		remap('n', '<leader>la', vim.lsp.buf.code_action)
+	end,
 })
-
-lsp.setup_nvim_cmp({
-	mapping = cmp_mappings
-})
-
-lsp.on_attach(function(_, bufnr)
-	local opts = { buffer = bufnr, remap = false }
-
-	lib.remap('n', 'gd', vim.lsp.buf.definition, opts)
-	lib.remap('n', '<leader>la', vim.lsp.buf.code_action, opts)
-	lib.remap('n', '<leader>lr', vim.lsp.buf.rename, opts)
-	lib.remap('n', '<leader>l=', vim.lsp.buf.format, opts)
-end)
-
-lsp.setup()
diff --git a/.config/nvim/after/plugin/nvim-cmp.lua b/.config/nvim/after/plugin/nvim-cmp.lua
new file mode 100644
index 0000000..4bc95c5
--- /dev/null
+++ b/.config/nvim/after/plugin/nvim-cmp.lua
@@ -0,0 +1,31 @@
+local conf = require('lspconfig')
+local capabilities = require('cmp_nvim_lsp').default_capabilities()
+conf['clangd'].setup { capabilities = capabilities }
+conf['gopls'].setup { capabilities = capabilities }
+conf['lua_ls'].setup { capabilities = capabilities }
+conf['rust_analyzer'].setup { capabilities = capabilities }
+
+local cmp = require('cmp')
+cmp.setup {
+	snippet = {
+		expand = function(args)
+			require('luasnip').lsp_expand(args.body)
+		end,
+	},
+	mapping = cmp.mapping.preset.insert({
+		['<C-k>'] = cmp.mapping.select_prev_item(),
+		['<C-j>'] = cmp.mapping.select_next_item(),
+		['<C-e>'] = cmp.mapping.abort(),
+		['<CR>'] = cmp.mapping.confirm({ select = true }),
+	}),
+	sources = cmp.config.sources({
+		{ name = 'nvim_lsp' },
+		{ name = 'path' },
+		{ name = 'luasnip' },
+	}, {
+		{ name = 'buffer', length = 5 },
+	}),
+	experimental = {
+		ghost_text = true,
+	}
+}
diff --git a/.config/nvim/lua/mango/packer.lua b/.config/nvim/lua/mango/packer.lua
index 02aa11a..7f6beb1 100644
--- a/.config/nvim/lua/mango/packer.lua
+++ b/.config/nvim/lua/mango/packer.lua
@@ -36,20 +36,37 @@ return require('packer').startup(function(use)
 	use 'Glench/Vim-Jinja2-Syntax'
 	use 'luckasRanarison/tree-sitter-hypr'
 
-	-- LSP support
+	-- LSP support and completions
+	use 'neovim/nvim-lspconfig'
 	use {
-		'VonHeikemen/lsp-zero.nvim',
-		branch = 'v2.x',
+		'hrsh7th/nvim-cmp',
 		requires = {
-			-- LSP Support
-			{ 'neovim/nvim-lspconfig' },
-			{ 'williamboman/mason.nvim' },
-			{ 'williamboman/mason-lspconfig.nvim' },
-
-			-- Autocompletion
-			{ 'hrsh7th/nvim-cmp' },
+			-- Completion backends
+			{ 'hrsh7th/cmp-buffer' },
+			{ 'hrsh7th/cmp-nvim-lua' },
 			{ 'hrsh7th/cmp-nvim-lsp' },
+			{ 'hrsh7th/cmp-path' },
+
+			-- Snippets
 			{ 'L3MON4D3/LuaSnip' },
-		}
+			{ 'saadparwaiz1/cmp_luasnip' },
+		},
 	}
+
+	-- LSP support
+	-- use {
+	-- 	'VonHeikemen/lsp-zero.nvim',
+	-- 	branch = 'v2.x',
+	-- 	requires = {
+	-- 		-- LSP Support
+	-- 		{ 'neovim/nvim-lspconfig' },
+	-- 		{ 'williamboman/mason.nvim' },
+	-- 		{ 'williamboman/mason-lspconfig.nvim' },
+
+	-- 		-- Autocompletion
+	-- 		{ 'hrsh7th/nvim-cmp' },
+	-- 		{ 'hrsh7th/cmp-nvim-lsp' },
+	-- 		{ 'L3MON4D3/LuaSnip' },
+	-- 	}
+	-- }
 end)
-- 
cgit v1.2.3