use crate::deriving::generic::*;
use crate::deriving::pathvec_std;
+use rustc_ast::ast;
+use rustc_ast::ast::{Expr, MetaItem, Mutability};
+use rustc_ast::ptr::P;
use rustc_expand::base::{Annotatable, ExtCtxt};
use rustc_span::symbol::Symbol;
use rustc_span::Span;
-use syntax::ast;
-use syntax::ast::{Expr, MetaItem, Mutability};
-use syntax::ptr::P;
pub fn expand_deriving_rustc_decodable(
cx: &mut ExtCtxt<'_>,