nvim-config/lua/completion.lua

local cmp = require("cmp")

cmp.setup({
	snippet = {
		expand = function(args)
			require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
		end,
	},
	formatting = {
		format = function(entry, vim_item)
			-- Ensure word is a string to prevent matcher errors
			if vim_item.word and type(vim_item.word) ~= "string" then
				vim_item.word = tostring(vim_item.word)
			end
			return vim_item
		end,
	},
	window = {
		completion = cmp.config.window.bordered(),
		documentation = cmp.config.window.bordered(),
	},
	mapping = cmp.mapping.preset.insert({
		["<C-b>"] = cmp.mapping.scroll_docs(-4),
		["<C-f>"] = cmp.mapping.scroll_docs(4),
		["<C-Space>"] = cmp.mapping.complete(),
		["<C-e>"] = cmp.mapping.abort(),
		["<CR>"] = cmp.mapping.confirm({ select = false }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
		["<C-Tab>"] = cmp.mapping(function(fallback)
			if cmp.visible() then
				cmp.select_next_item()
			else
				fallback()
			end
		end, { "i", "s" }),

		["<S-Tab>"] = cmp.mapping(function(fallback)
			if cmp.visible() then
				cmp.select_prev_item()
			else
				fallback()
			end
		end, { "i", "s" }),
	}),
	sources = cmp.config.sources({
		{ name = "nvim_lua" },
		-- { name = "copilot",  group_index = 3 },
		{ name = "nvim_lsp", group_index = 1 },
		{ name = "path",     group_index = 3 },
		{ name = "luasnip",  group_index = 2 },
		{ name = "buffer" },
		{ name = "calc" },
		{ name = 'orgmode' },
		-- { name = 'vsnip' }, -- For vsnip users.
		-- { name = 'luasnip' }, -- For luasnip users.
		-- { name = 'ultisnips' }, -- For ultisnips users.
		-- { name = 'snippy' }, -- For snippy users.
		{ name = "crates" },
		-- { name = 'cmdline' },
		-- { name = 'neorg' },
	}),
})

-- Set configuration for specific filetype.
cmp.setup.filetype("gitcommit", {
	sources = cmp.config.sources({
		{ name = "cmp_git" }, -- You can specify the `cmp_git` source if you were installed it.
	}, {
		{ name = "buffer" },
	}),
})

-- Use buffer source for `/` and `?` (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline({ "/", "?" }, {
	mapping = cmp.mapping.preset.cmdline(),
	sources = {
		{ name = "buffer" },
		{ name = "cmdline" },
	},
})

-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
cmp.setup.cmdline(":", {
	mapping = cmp.mapping.preset.cmdline(),
	sources = cmp.config.sources({
		{ name = "path" },
	}, {
		{ name = "cmdline" },
	}),
})

-- Set up lspconfig.
-- require("cmp_nvim_lsp").default_capabilities()
local capabilities = require("cmp_nvim_lsp").default_capabilities()
-- Replace <YOUR_LSP_SERVER> with each lsp server you've enabled.
-- require('lspconfig')['<YOUR_LSP_SERVER>'].setup {
--   capabilities = capabilities
--   }
require("lspconfig").clangd.setup({
	capabilities = capabilities,
})
require("lspconfig").taplo.setup({
	capabilities = capabilities,
})
require("lspconfig").marksman.setup({
	capabilities = capabilities,
})
require("lspconfig").lua_ls.setup({
	capabilities = capabilities,
})
require("lspconfig").rust_analyzer.setup({
	capabilities = capabilities,
})
require("lspconfig").zls.setup({
	capabilities = capabilities,
})
require("lspconfig").gopls.setup({
	capabilities = capabilities,
	settings = {
		gopls = {
			analyses = {
				unusedparams = true,
				unusedwrite = true,
				shadow = true,
			},
			staticcheck = true,
			usePlaceholders = true,
			hints = {
				assignVariableTypes = true,
				compositeLiteralFields = true,
				compositeLiteralTypes = true,
				functionTypeParameters = true,
				parameterNames = true,
				rangeVariableTypes = true,
			},
		},
	},
})
require("lspconfig").pyright.setup({
	capabilities = capabilities,
	settings = {
		python = {
			analysis = {
				typeCheckingMode = "basic",
				autoSearchPaths = true,
				useLibraryCodeForTypes = true,
				diagnosticMode = "workspace",
				stubPath = "./typings",
			},
		},
	},
})
require("lspconfig").nim_langserver.setup({
	capabilities = capabilities,
})
-- require'lspconfig'.jedi_language_server.setup {
--   capabilities = capabilities,
-- }
require("lsp_signature").setup({
  debug = false,
  bind = true,                 -- registers signature handler
  doc_lines = 10,
  max_height = 12,
  max_width = function() return math.floor(vim.api.nvim_win_get_width(0) * 0.8) end,
  wrap = true,
  floating_window = true,      -- show the popup
  floating_window_above_cur_line = true,
  floating_window_off_x = 1,
  floating_window_off_y = 0,

  -- IMPORTANT: don’t inline (you can change later if you want)
  hint_enable = true,
  hint_inline = function() return false end,

  hint_prefix = "🐼 ",
  hint_scheme = "String",
  hi_parameter = "LspSignatureActiveParameter",
  handler_opts = { border = "rounded" },

  always_trigger = false,
  extra_trigger_chars = { "(", "," }, -- good default
  zindex = 200,
  padding = "",
  timer_interval = 200,
})