Nixfiles/nvim/lua/completion.lua

require("lsp_signature").on_attach()

local cmp = require("cmp")

cmp.setup({
	snippet = {
		expand = function(args)
			vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` user.
		end,
	},
	mapping = {
		["<C-d>"] = cmp.mapping.scroll_docs(-4),
		["<C-f>"] = cmp.mapping.scroll_docs(4),
		["<C-Space>"] = cmp.mapping.complete(),
		["<C-e>"] = cmp.mapping.close(),
		["<Tab>"] = cmp.mapping(cmp.mapping.select_next_item(), { "i", "s" }),
		["<CR>"] = cmp.mapping.confirm({ select = true }),
	},
	sources = {
		{ name = "nvim_lsp" },
		{ name = "vsnip" },
		{ name = "buffer" },
		{ name = "path" },
		{ name = "calc" },
		{ name = "latex_symbols" },
	},
})