nixos-laptop/home-manager/neovim/lspconfig.lua

require("lsp-format").setup {}

local on_attach = function(client, bufnr)
    local bufmap = function(keys, func)
        vim.keymap.set('n', keys, func, {buffer = bufnr})
    end

    bufmap('<leader>r', vim.lsp.buf.rename)
    bufmap('<leader>a', vim.lsp.buf.code_action)

    bufmap('gd', vim.lsp.buf.definition)
    bufmap('gD', vim.lsp.buf.declaration)
    bufmap('gI', vim.lsp.buf.implementation)
    bufmap('<leader>D', vim.lsp.buf.type_definition)

    bufmap('gr', require('telescope.builtin').lsp_references)
    bufmap('<leader>s', require('telescope.builtin').lsp_document_symbols)
    bufmap('<leader>S',
           require('telescope.builtin').lsp_dynamic_workspace_symbols)

    bufmap('K', vim.lsp.buf.hover)

    vim.api.nvim_buf_create_user_command(bufnr, 'Format',
                                         function(_) vim.lsp.buf.format() end,
                                         {})
end

local capabilities = vim.lsp.protocol.make_client_capabilities()
capabilities = require('cmp_nvim_lsp').default_capabilities(capabilities)

require('neodev').setup()
require'lspconfig'.nil_ls.setup {
    on_attach = on_attach,
    capabilities = capabilities
}
require'lspconfig'.pyright.setup {
    on_attach = on_attach,
    capabilities = capabilities
}
require'lspconfig'.gopls.setup {
    on_attach = on_attach,
    capabilities = capabilities
}
require'lspconfig'.terraformls.setup {
    on_attach = on_attach,
    capabilities = capabilities
}

require'lspconfig'.efm.setup {
    on_attach = require("lsp-format").on_attach,
    init_options = {documentFormatting = true},
    settings = {
        languages = {
            lua = {{formatCommand = "lua-format -i", formatStdin = true}},
            nix = {{formatCommand = "nixfmt", formatStdin = true}}
        }
    },
    filetypes = {"lua", "nix"}
}