return 
    {
        'neovim/nvim-lspconfig',
        dependencies = {
            "williamboman/mason-lspconfig",
            "williamboman/mason.nvim",
            "hrsh7th/cmp-nvim-lsp",
            "hrsh7th/cmp-buffer",
            "hrsh7th/cmp-path",
            "hrsh7th/cmp-cmdline",
            "hrsh7th/nvim-cmp",
            'L3MON4D3/LuaSnip',
        },
        config = function()
            require("mason").setup()
            require("mason-lspconfig").setup({
                ensure_installed = { "lua_ls", "bashls", "rust_analyzer" }
            })
            local cmp = require('cmp')
            cmp.setup({
                snippet = {
                    expand = function(args)
                        require('luasnip').lsp_expand(args.body)
                    end,
                },
                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 = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
                }),
                sources = cmp.config.sources({
                    { name = 'nvim_lsp' },
                    { name = 'luasnip' },
                }, {
                    { name = 'buffer' },
                })
            })

            -- Set configuration for specific filetype.
            cmp.setup.filetype('gitcommit', {
                sources = cmp.config.sources({
                    { name = 'git' }, -- You can specify the `git` source if [you were installed it](https://github.com/petertriho/cmp-git).
                }, {
                    { 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' }
                }
            })

            -- 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' }
                }),
                matching = { disallow_symbol_nonprefix_matching = false }
            })

            -- Set up lspconfig.
            local capabilities = require('cmp_nvim_lsp').default_capabilities()

            require('lspconfig')['asm_lsp'].setup({
                capabilities = capabilities
            })

            local lsp = require("lspconfig")
            lsp.lua_ls.setup({
                capabilities = require('cmp_nvim_lsp').default_capabilities(),
                settings = {
                    Lua = {
                        diagnostics = {
                            globals = { 'vim' }
                        }
                    }
                }
            })
        end
    }