diff --git a/src/compiletest/common.rs b/src/compiletest/common.rs
index b7c4e26c4b15c..55d9f467f79e2 100644
--- a/src/compiletest/common.rs
+++ b/src/compiletest/common.rs
@@ -10,7 +10,7 @@
 
 use core::prelude::*;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum mode {
     mode_compile_fail,
     mode_run_fail,
diff --git a/src/libcore/cmp.rs b/src/libcore/cmp.rs
index 25778f08757c3..fc8ed5d70c33d 100644
--- a/src/libcore/cmp.rs
+++ b/src/libcore/cmp.rs
@@ -37,7 +37,7 @@ pub trait Eq {
     pure fn ne(&self, other: &Self) -> bool;
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Ordering { Less, Equal, Greater }
 
 /// Trait for types that form a total order
diff --git a/src/libcore/either.rs b/src/libcore/either.rs
index 2410ef3933277..a036c19c1580e 100644
--- a/src/libcore/either.rs
+++ b/src/libcore/either.rs
@@ -17,7 +17,7 @@ use result;
 use vec;
 
 /// The either type
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Either<T, U> {
     Left(T),
     Right(U)
diff --git a/src/libcore/io.rs b/src/libcore/io.rs
index b160da359f8d3..94e06924e6957 100644
--- a/src/libcore/io.rs
+++ b/src/libcore/io.rs
@@ -630,7 +630,7 @@ pub pure fn with_str_reader<T>(s: &str, f: &fn(@Reader) -> T) -> T {
 pub enum FileFlag { Append, Create, Truncate, NoFlag, }
 
 // What type of writer are we?
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum WriterType { Screen, File }
 
 // FIXME (#2004): Seekable really should be orthogonal.
diff --git a/src/libcore/option.rs b/src/libcore/option.rs
index 8103166909c7f..c12b78b393f65 100644
--- a/src/libcore/option.rs
+++ b/src/libcore/option.rs
@@ -52,7 +52,7 @@ use iter::{BaseIter, MutableIter};
 #[cfg(test)] use str;
 
 /// The option type
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Option<T> {
     None,
     Some(T),
diff --git a/src/libcore/path.rs b/src/libcore/path.rs
index bc6d6b507b202..df4a3fdfb9e4a 100644
--- a/src/libcore/path.rs
+++ b/src/libcore/path.rs
@@ -20,7 +20,7 @@ use option::{None, Option, Some};
 use str;
 use to_str::ToStr;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct WindowsPath {
     host: Option<~str>,
     device: Option<~str>,
@@ -32,7 +32,7 @@ pub pure fn WindowsPath(s: &str) -> WindowsPath {
     GenericPath::from_str(s)
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct PosixPath {
     is_absolute: bool,
     components: ~[~str],
diff --git a/src/libcore/result.rs b/src/libcore/result.rs
index 832071a0ba81b..18594a73d65ed 100644
--- a/src/libcore/result.rs
+++ b/src/libcore/result.rs
@@ -20,7 +20,7 @@ use option::{None, Option, Some};
 use vec;
 
 /// The result type
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Result<T, U> {
     /// Contains the successful result value
     Ok(T),
diff --git a/src/libcore/task/mod.rs b/src/libcore/task/mod.rs
index 31c44531efec0..1ef2316ec07af 100644
--- a/src/libcore/task/mod.rs
+++ b/src/libcore/task/mod.rs
@@ -50,13 +50,13 @@ pub mod rt;
 pub mod spawn;
 
 /// A handle to a scheduler
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Scheduler {
     SchedulerHandle(sched_id)
 }
 
 /// A handle to a task
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Task {
     TaskHandle(task_id)
 }
@@ -88,7 +88,7 @@ impl Eq for TaskResult {
 }
 
 /// Scheduler modes
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum SchedMode {
     /// Run task on the default scheduler
     DefaultScheduler,
diff --git a/src/libcore/unstable/extfmt.rs b/src/libcore/unstable/extfmt.rs
index a5c22fe0ad303..28f810c3a2871 100644
--- a/src/libcore/unstable/extfmt.rs
+++ b/src/libcore/unstable/extfmt.rs
@@ -97,13 +97,13 @@ pub mod ct {
     use prelude::*;
     use str;
 
-    #[deriving_eq]
+    #[deriving(Eq)]
     pub enum Signedness { Signed, Unsigned, }
 
-    #[deriving_eq]
+    #[deriving(Eq)]
     pub enum Caseness { CaseUpper, CaseLower, }
 
-    #[deriving_eq]
+    #[deriving(Eq)]
     pub enum Ty {
         TyBool,
         TyStr,
@@ -116,7 +116,7 @@ pub mod ct {
         TyPoly,
     }
 
-    #[deriving_eq]
+    #[deriving(Eq)]
     pub enum Flag {
         FlagLeftJustify,
         FlagLeftZeroPad,
@@ -125,7 +125,7 @@ pub mod ct {
         FlagAlternate,
     }
 
-    #[deriving_eq]
+    #[deriving(Eq)]
     pub enum Count {
         CountIs(uint),
         CountIsParam(uint),
@@ -133,7 +133,7 @@ pub mod ct {
         CountImplied,
     }
 
-    #[deriving_eq]
+    #[deriving(Eq)]
     struct Parsed<T> {
         val: T,
         next: uint
@@ -146,7 +146,7 @@ pub mod ct {
     }
 
     // A formatted conversion from an expression to a string
-    #[deriving_eq]
+    #[deriving(Eq)]
     pub struct Conv {
         param: Option<uint>,
         flags: ~[Flag],
@@ -156,7 +156,7 @@ pub mod ct {
     }
 
     // A fragment of the output sequence
-    #[deriving_eq]
+    #[deriving(Eq)]
     pub enum Piece { PieceString(~str), PieceConv(Conv), }
 
     pub type ErrorFn = @fn(&str) -> !;
@@ -596,7 +596,7 @@ pub mod rt {
             };
     }
 
-    #[deriving_eq]
+    #[deriving(Eq)]
     pub enum PadMode { PadSigned, PadUnsigned, PadNozero, PadFloat }
 
     pub fn pad(cv: Conv, s: ~str, mode: PadMode) -> ~str {
diff --git a/src/libfuzzer/fuzzer.rc b/src/libfuzzer/fuzzer.rc
index 3a2bbcee4b0a6..21015a767b715 100644
--- a/src/libfuzzer/fuzzer.rc
+++ b/src/libfuzzer/fuzzer.rc
@@ -39,7 +39,7 @@ use syntax::parse;
 use syntax::print::pprust;
 use syntax::diagnostic;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum test_mode { tm_converge, tm_run, }
 
 pub struct Context { mode: test_mode } // + rng
diff --git a/src/librustc/back/link.rs b/src/librustc/back/link.rs
index 4c8f27167816e..5f9a3e606f201 100644
--- a/src/librustc/back/link.rs
+++ b/src/librustc/back/link.rs
@@ -38,7 +38,7 @@ use syntax::ast_map::{path, path_mod, path_name};
 use syntax::attr;
 use syntax::print::pprust;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum output_type {
     output_type_none,
     output_type_bitcode,
diff --git a/src/librustc/driver/driver.rs b/src/librustc/driver/driver.rs
index b983fa316d304..a4fdd7f1b5249 100644
--- a/src/librustc/driver/driver.rs
+++ b/src/librustc/driver/driver.rs
@@ -161,7 +161,7 @@ pub fn parse_input(sess: Session, +cfg: ast::crate_cfg, input: input)
     }
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum compile_upto {
     cu_parse,
     cu_expand,
diff --git a/src/librustc/driver/session.rs b/src/librustc/driver/session.rs
index 75400c5e3244c..caf4689688b10 100644
--- a/src/librustc/driver/session.rs
+++ b/src/librustc/driver/session.rs
@@ -27,10 +27,10 @@ use syntax::parse::ParseSess;
 use syntax::{ast, codemap};
 use syntax;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum os { os_win32, os_macos, os_linux, os_android, os_freebsd, }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum arch { arch_x86, arch_x86_64, arch_arm, arch_mips, }
 
 pub enum crate_type { bin_crate, lib_crate, unknown_crate, }
@@ -104,7 +104,7 @@ pub fn debugging_opts_map() -> ~[(~str, ~str, uint)] {
     ]
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum OptLevel {
     No, // -O0
     Less, // -O1
diff --git a/src/librustc/lib/llvm.rs b/src/librustc/lib/llvm.rs
index e5234dff91d13..5cdfe6a49f723 100644
--- a/src/librustc/lib/llvm.rs
+++ b/src/librustc/lib/llvm.rs
@@ -127,7 +127,7 @@ pub enum RealPredicate {
 
 // enum for the LLVM TypeKind type - must stay in sync with the def of
 // LLVMTypeKind in llvm/include/llvm-c/Core.h
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum TypeKind {
     Void      = 0,
     Half      = 1,
diff --git a/src/librustc/metadata/decoder.rs b/src/librustc/metadata/decoder.rs
index 292a11062613d..655bfc4446ec8 100644
--- a/src/librustc/metadata/decoder.rs
+++ b/src/librustc/metadata/decoder.rs
@@ -93,7 +93,7 @@ fn lookup_item(item_id: int, data: @~[u8]) -> ebml::Doc {
     }
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 enum Family {
     Const,                 // c
     Fn,                    // f
diff --git a/src/librustc/middle/borrowck/check_loans.rs b/src/librustc/middle/borrowck/check_loans.rs
index 17bdf318e0708..6dfcf6ddf9168 100644
--- a/src/librustc/middle/borrowck/check_loans.rs
+++ b/src/librustc/middle/borrowck/check_loans.rs
@@ -51,7 +51,7 @@ struct CheckLoanCtxt {
 }
 
 // if we are enforcing purity, why are we doing so?
-#[deriving_eq]
+#[deriving(Eq)]
 enum purity_cause {
     // enforcing purity because fn was declared pure:
     pc_pure_fn,
@@ -80,7 +80,7 @@ pub fn check_loans(bccx: @BorrowckCtxt,
     visit::visit_crate(*crate, clcx, vt);
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 enum assignment_type {
     at_straight_up,
     at_swap
diff --git a/src/librustc/middle/borrowck/mod.rs b/src/librustc/middle/borrowck/mod.rs
index 3e63707162417..daa365aade125 100644
--- a/src/librustc/middle/borrowck/mod.rs
+++ b/src/librustc/middle/borrowck/mod.rs
@@ -340,7 +340,7 @@ pub type root_map = HashMap<root_map_key, RootInfo>;
 // if you have an expression `x.f` and x has type ~@T, we could add an
 // entry {id:x, derefs:0} to refer to `x` itself, `{id:x, derefs:1}`
 // to refer to the deref of the unique pointer, and so on.
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct root_map_key {
     id: ast::node_id,
     derefs: uint
@@ -355,7 +355,7 @@ pub type mutbl_map = HashMap<ast::node_id, ()>;
 pub type write_guard_map = HashMap<root_map_key, ()>;
 
 // Errors that can occur
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum bckerr_code {
     err_mut_uniq,
     err_mut_variant,
@@ -367,7 +367,7 @@ pub enum bckerr_code {
 
 // Combination of an error code and the categorization of the expression
 // that caused it
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct bckerr {
     cmt: cmt,
     code: bckerr_code
@@ -382,7 +382,7 @@ pub enum MoveError {
 // shorthand for something that fails with `bckerr` or succeeds with `T`
 pub type bckres<T> = Result<T, bckerr>;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum LoanKind {
     TotalFreeze,   // Entire path is frozen   (borrowed as &T)
     PartialFreeze, // Some subpath is frozen  (borrowed as &T)
diff --git a/src/librustc/middle/check_match.rs b/src/librustc/middle/check_match.rs
index 24e94c7ca6d41..ddc00000c6b4f 100644
--- a/src/librustc/middle/check_match.rs
+++ b/src/librustc/middle/check_match.rs
@@ -183,7 +183,7 @@ pub type matrix = ~[~[@pat]];
 
 pub enum useful { useful(ty::t, ctor), useful_, not_useful }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum ctor {
     single,
     variant(def_id),
diff --git a/src/librustc/middle/const_eval.rs b/src/librustc/middle/const_eval.rs
index ba6348bb1de81..7e0a36be0a020 100644
--- a/src/librustc/middle/const_eval.rs
+++ b/src/librustc/middle/const_eval.rs
@@ -240,7 +240,7 @@ pub fn process_crate(crate: @ast::crate,
 
 // FIXME (#33): this doesn't handle big integer/float literals correctly
 // (nor does the rest of our literal handling).
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum const_val {
     const_float(f64),
     const_int(i64),
diff --git a/src/librustc/middle/lint.rs b/src/librustc/middle/lint.rs
index 3edceebba0cc0..c95ec0f30831d 100644
--- a/src/librustc/middle/lint.rs
+++ b/src/librustc/middle/lint.rs
@@ -60,7 +60,7 @@ use syntax::{ast, ast_util, visit};
  * process.
  */
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum lint {
     ctypes,
     unused_imports,
@@ -99,7 +99,7 @@ pub fn level_to_str(lv: level) -> &'static str {
     }
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum level {
     allow, warn, deny, forbid
 }
diff --git a/src/librustc/middle/mem_categorization.rs b/src/librustc/middle/mem_categorization.rs
index a471d91877a62..d85570444d825 100644
--- a/src/librustc/middle/mem_categorization.rs
+++ b/src/librustc/middle/mem_categorization.rs
@@ -60,7 +60,7 @@ use syntax::ast;
 use syntax::codemap::span;
 use syntax::print::pprust;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum categorization {
     cat_rvalue,                     // result of eval'ing some misc expr
     cat_special(special_kind),      //
@@ -75,7 +75,7 @@ pub enum categorization {
 }
 
 // different kinds of pointers:
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum ptr_kind {
     uniq_ptr,
     gc_ptr(ast::mutability),
@@ -85,7 +85,7 @@ pub enum ptr_kind {
 
 // I am coining the term "components" to mean "pieces of a data
 // structure accessible without a dereference":
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum comp_kind {
     comp_tuple,                  // elt in a tuple
     comp_anon_field,             // anonymous field (in e.g.
@@ -98,7 +98,7 @@ pub enum comp_kind {
 }
 
 // different kinds of expressions we might evaluate
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum special_kind {
     sk_method,
     sk_static_item,
@@ -106,7 +106,7 @@ pub enum special_kind {
     sk_heap_upvar
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum MutabilityCategory {
     McImmutable, // Immutable.
     McReadOnly,  // Read-only (`const`)
@@ -119,7 +119,7 @@ pub enum MutabilityCategory {
 // which the value is stored.
 //
 // note: cmt stands for "categorized mutable type".
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct cmt_ {
     id: ast::node_id,          // id of expr/pat producing this value
     span: span,                // span of same expr/pat
@@ -134,7 +134,7 @@ pub type cmt = @cmt_;
 // a loan path is like a category, but it exists only when the data is
 // interior to the stack frame.  loan paths are used as the key to a
 // map indicating what is borrowed at any point in time.
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum loan_path {
     lp_local(ast::node_id),
     lp_arg(ast::node_id),
diff --git a/src/librustc/middle/region.rs b/src/librustc/middle/region.rs
index 6dcf1ba812863..10838a7a8dc2c 100644
--- a/src/librustc/middle/region.rs
+++ b/src/librustc/middle/region.rs
@@ -389,7 +389,7 @@ pub fn resolve_crate(sess: Session,
 
 pub type region_paramd_items = HashMap<ast::node_id, region_variance>;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct region_dep {
     ambient_variance: region_variance,
     id: ast::node_id
diff --git a/src/librustc/middle/resolve.rs b/src/librustc/middle/resolve.rs
index f0e7ef0c5899a..1d3a0f8b4b63d 100644
--- a/src/librustc/middle/resolve.rs
+++ b/src/librustc/middle/resolve.rs
@@ -122,7 +122,7 @@ pub struct Export2 {
     reexport: bool,     // Whether this is a reexport.
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum PatternBindingMode {
     RefutableMode,
     LocalIrrefutableMode,
@@ -166,7 +166,7 @@ pub enum NameDefinition {
 
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Mutability {
     Mutable,
     Immutable
@@ -179,7 +179,7 @@ pub enum SelfBinding {
 
 pub type ResolveVisitor = vt<()>;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum ImportDirectiveNS {
     TypeNSOnly,
     AnyNS
@@ -271,7 +271,7 @@ pub enum MethodSort {
 // FIXME #4947: The X-ray flag is kind of questionable in the first
 // place. It might be better to introduce an expr_xray_path instead.
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum XrayFlag {
     NoXray,     //< Private items cannot be accessed.
     Xray        //< Private items can be accessed.
@@ -292,13 +292,13 @@ pub enum ModulePrefixResult {
     PrefixFound(@mut Module, uint)
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum AllowCapturingSelfFlag {
     AllowCapturingSelf,         //< The "self" definition can be captured.
     DontAllowCapturingSelf,     //< The "self" definition cannot be captured.
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 enum NameSearchType {
     SearchItemsAndPublicImports,    //< Search items and public imports.
     SearchItemsAndAllImports,       //< Search items and all imports.
@@ -312,7 +312,7 @@ pub enum BareIdentifierPatternResolution {
 
 // Specifies how duplicates should be handled when adding a child item if
 // another item exists with the same name in some namespace.
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum DuplicateCheckingMode {
     ForbidDuplicateModules,
     ForbidDuplicateTypes,
diff --git a/src/librustc/middle/trans/_match.rs b/src/librustc/middle/trans/_match.rs
index 09f0a4f547a03..a529fd669394a 100644
--- a/src/librustc/middle/trans/_match.rs
+++ b/src/librustc/middle/trans/_match.rs
@@ -1037,7 +1037,7 @@ pub fn pick_col(m: &[@Match]) -> uint {
     return best_col;
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum branch_kind { no_branch, single, switch, compare, compare_vec_len, }
 
 // Compiles a comparison between two things.
diff --git a/src/librustc/middle/trans/common.rs b/src/librustc/middle/trans/common.rs
index 8ffccff54b8d8..112d42d8f57e6 100644
--- a/src/librustc/middle/trans/common.rs
+++ b/src/librustc/middle/trans/common.rs
@@ -335,14 +335,14 @@ pub fn warn_not_to_commit(ccx: @CrateContext, msg: &str) {
 }
 
 // Heap selectors. Indicate which heap something should go on.
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum heap {
     heap_managed,
     heap_managed_unique,
     heap_exchange,
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum cleantype {
     normal_exit_only,
     normal_exit_and_unwind
@@ -1270,7 +1270,7 @@ pub fn is_undef(val: ValueRef) -> bool {
 }
 
 // Used to identify cached monomorphized functions and vtables
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum mono_param_id {
     mono_precise(ty::t, Option<~[mono_id]>),
     mono_any,
@@ -1280,7 +1280,7 @@ pub enum mono_param_id {
               datum::DatumMode),
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct mono_id_ {
     def: ast::def_id,
     params: ~[mono_param_id],
diff --git a/src/librustc/middle/trans/datum.rs b/src/librustc/middle/trans/datum.rs
index 9b3ec5ef842e6..08ed83a9634bb 100644
--- a/src/librustc/middle/trans/datum.rs
+++ b/src/librustc/middle/trans/datum.rs
@@ -110,7 +110,7 @@ use core::uint;
 use syntax::ast;
 use syntax::parse::token::special_idents;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum CopyAction {
     INIT,
     DROP_EXISTING
@@ -171,7 +171,7 @@ impl to_bytes::IterBytes for DatumMode {
 }
 
 /// See `Datum cleanup styles` section at the head of this module.
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum DatumCleanup {
     RevokeClean,
     ZeroMem
diff --git a/src/librustc/middle/ty.rs b/src/librustc/middle/ty.rs
index be5dd8af9d730..065942b8fe63b 100644
--- a/src/librustc/middle/ty.rs
+++ b/src/librustc/middle/ty.rs
@@ -54,13 +54,13 @@ use syntax;
 
 // Note: after typeck, you should use resolved_mode() to convert this mode
 // into an rmode, which will take into account the results of mode inference.
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct arg {
     mode: ast::mode,
     ty: t
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct field {
     ident: ast::ident,
     mt: mt
@@ -84,7 +84,7 @@ pub struct mt {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum vstore {
     vstore_fixed(uint),
     vstore_uniq,
@@ -94,7 +94,7 @@ pub enum vstore {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum TraitStore {
     BareTraitStore,             // a plain trait without a sigil
     BoxTraitStore,              // @Trait
@@ -111,7 +111,7 @@ pub struct field_ty {
 
 // Contains information needed to resolve types and (in the future) look up
 // the types of AST nodes.
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct creader_cache_key {
     cnum: int,
     pos: uint,
@@ -131,7 +131,7 @@ struct intern_key {
     o_def_id: Option<ast::def_id>
 }
 
-// NB: Do not replace this with #[deriving_eq]. The automatically-derived
+// NB: Do not replace this with #[deriving(Eq)]. The automatically-derived
 // implementation will not recurse through sty and you will get stack
 // exhaustion.
 impl cmp::Eq for intern_key {
@@ -359,14 +359,14 @@ pub pure fn type_has_regions(t: t) -> bool {
 pub pure fn type_def_id(t: t) -> Option<ast::def_id> { get(t).o_def_id }
 pub pure fn type_id(t: t) -> uint { get(t).id }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct BareFnTy {
     purity: ast::purity,
     abi: Abi,
     sig: FnSig
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct ClosureTy {
     purity: ast::purity,
     sigil: ast::Sigil,
@@ -381,7 +381,7 @@ pub struct ClosureTy {
  *
  * - `inputs` is the list of arguments and their modes.
  * - `output` is the return type. */
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct FnSig {
     inputs: ~[arg],
     output: t
@@ -400,7 +400,7 @@ impl to_bytes::IterBytes for ClosureTy {
     }
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct param_ty {
     idx: uint,
     def_id: def_id
@@ -489,7 +489,7 @@ type opt_region = Option<Region>;
  * - `self_ty` is the type to which `self` should be remapped, if any.  The
  *   `self` type is rather funny in that it can only appear on traits and is
  *   always substituted away to the implementing type for a trait. */
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct substs {
     self_r: opt_region,
     self_ty: Option<ty::t>,
@@ -498,7 +498,7 @@ pub struct substs {
 
 // NB: If you change this, you'll probably want to change the corresponding
 // AST structure in libsyntax/ast.rs as well.
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum sty {
     ty_nil,
     ty_bot,
@@ -535,7 +535,7 @@ pub enum sty {
     ty_unboxed_vec(mt),
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum IntVarValue {
     IntType(ast::int_ty),
     UintType(ast::uint_ty),
@@ -592,23 +592,23 @@ pub enum param_bound {
     bound_trait(t),
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct TyVid(uint);
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct IntVid(uint);
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct FloatVid(uint);
 
-#[deriving_eq]
+#[deriving(Eq)]
 #[auto_encode]
 #[auto_decode]
 pub struct RegionVid {
     id: uint
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum InferTy {
     TyVar(TyVid),
     IntVar(IntVid),
diff --git a/src/librustc/middle/typeck/check/method.rs b/src/librustc/middle/typeck/check/method.rs
index adcc94086947a..2973492cac4b9 100644
--- a/src/librustc/middle/typeck/check/method.rs
+++ b/src/librustc/middle/typeck/check/method.rs
@@ -105,13 +105,13 @@ use syntax::ast::{m_const, m_mutbl, m_imm};
 use syntax::ast;
 use syntax::ast_map;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum CheckTraitsFlag {
     CheckTraitsOnly,
     CheckTraitsAndInherentMethods,
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum AutoderefReceiverFlag {
     AutoderefReceiver,
     DontAutoderefReceiver,
diff --git a/src/librustc/middle/typeck/infer/region_inference.rs b/src/librustc/middle/typeck/infer/region_inference.rs
index 534e50e115f78..df309bcec2fa2 100644
--- a/src/librustc/middle/typeck/infer/region_inference.rs
+++ b/src/librustc/middle/typeck/infer/region_inference.rs
@@ -1175,10 +1175,10 @@ priv impl RegionVarBindings {
 
 // ______________________________________________________________________
 
-#[deriving_eq]
+#[deriving(Eq)]
 enum Direction { Incoming = 0, Outgoing = 1 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 enum Classification { Expanding, Contracting }
 
 enum GraphNodeValue { NoValue, Value(Region), ErrorValue }
diff --git a/src/librustc/rustc.rc b/src/librustc/rustc.rc
index 296c94f3299cb..60248687f3f98 100644
--- a/src/librustc/rustc.rc
+++ b/src/librustc/rustc.rc
@@ -286,7 +286,7 @@ pub fn run_compiler(args: &~[~str], demitter: diagnostic::Emitter) {
     compile_input(sess, cfg, input, &odir, &ofile);
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum monitor_msg {
     fatal,
     done,
diff --git a/src/librustdoc/doc.rs b/src/librustdoc/doc.rs
index ae45f54941730..43172fd22c0c3 100644
--- a/src/librustdoc/doc.rs
+++ b/src/librustdoc/doc.rs
@@ -19,18 +19,18 @@ use core::vec;
 
 pub type AstId = int;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct Doc {
     pages: ~[Page]
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Page {
     CratePage(CrateDoc),
     ItemPage(ItemTag)
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Implementation {
     Required,
     Provided,
@@ -40,7 +40,7 @@ pub enum Implementation {
  * Most rustdocs can be parsed into 'sections' according to their markdown
  * headers
  */
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct Section {
     header: ~str,
     body: ~str
@@ -49,12 +49,12 @@ pub struct Section {
 // FIXME (#2596): We currently give topmod the name of the crate.  There
 // would probably be fewer special cases if the crate had its own name
 // and topmod's name was the empty string.
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct CrateDoc {
     topmod: ModDoc
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum ItemTag {
     ModTag(ModDoc),
     NmodTag(NmodDoc),
@@ -67,7 +67,7 @@ pub enum ItemTag {
     StructTag(StructDoc)
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct ItemDoc {
     id: AstId,
     name: ~str,
@@ -79,20 +79,20 @@ pub struct ItemDoc {
     reexport: bool
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct SimpleItemDoc {
     item: ItemDoc,
     sig: Option<~str>
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct ModDoc {
     item: ItemDoc,
     items: ~[ItemTag],
     index: Option<Index>
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct NmodDoc {
     item: ItemDoc,
     fns: ~[FnDoc],
@@ -103,26 +103,26 @@ pub type ConstDoc = SimpleItemDoc;
 
 pub type FnDoc = SimpleItemDoc;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct EnumDoc {
     item: ItemDoc,
     variants: ~[VariantDoc]
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct VariantDoc {
     name: ~str,
     desc: Option<~str>,
     sig: Option<~str>
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct TraitDoc {
     item: ItemDoc,
     methods: ~[MethodDoc]
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct MethodDoc {
     name: ~str,
     brief: Option<~str>,
@@ -132,7 +132,7 @@ pub struct MethodDoc {
     implementation: Implementation,
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct ImplDoc {
     item: ItemDoc,
     trait_types: ~[~str],
@@ -142,14 +142,14 @@ pub struct ImplDoc {
 
 pub type TyDoc = SimpleItemDoc;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct StructDoc {
     item: ItemDoc,
     fields: ~[~str],
     sig: Option<~str>
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct Index {
     entries: ~[IndexEntry]
 }
@@ -164,7 +164,7 @@ pub struct Index {
  * * brief - The brief description
  * * link - A format-specific string representing the link target
  */
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct IndexEntry {
     kind: ~str,
     name: ~str,
diff --git a/src/libstd/deque.rs b/src/libstd/deque.rs
index 18cf64b299f58..64d28dcde834c 100644
--- a/src/libstd/deque.rs
+++ b/src/libstd/deque.rs
@@ -253,15 +253,15 @@ mod tests {
         fail_unless!(*deq.get(3) == d);
     }
 
-    #[deriving_eq]
+    #[deriving(Eq)]
     enum Taggy { One(int), Two(int, int), Three(int, int, int), }
 
-    #[deriving_eq]
+    #[deriving(Eq)]
     enum Taggypar<T> {
         Onepar(int), Twopar(int, int), Threepar(int, int, int),
     }
 
-    #[deriving_eq]
+    #[deriving(Eq)]
     struct RecCy {
         x: int,
         y: int,
diff --git a/src/libstd/getopts.rs b/src/libstd/getopts.rs
index e2702b7d566c5..de8a8f343816c 100644
--- a/src/libstd/getopts.rs
+++ b/src/libstd/getopts.rs
@@ -86,20 +86,20 @@ use core::option::{Some, None};
 use core::str;
 use core::vec;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Name {
     Long(~str),
     Short(char),
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum HasArg { Yes, No, Maybe, }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Occur { Req, Optional, Multi, }
 
 /// A description of a possible option
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct Opt {
     name: Name,
     hasarg: HasArg,
@@ -146,14 +146,14 @@ pub fn optmulti(name: &str) -> Opt {
     return Opt {name: mkname(name), hasarg: Yes, occur: Multi};
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 enum Optval { Val(~str), Given, }
 
 /**
  * The result of checking command line arguments. Contains a vector
  * of matches and a vector of free strings.
  */
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct Matches {
     opts: ~[Opt],
     vals: ~[~[Optval]],
@@ -179,7 +179,7 @@ fn find_opt(opts: &[Opt], nm: Name) -> Option<uint> {
  * The type returned when the command line does not conform to the
  * expected format. Pass this value to <fail_str> to get an error message.
  */
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Fail_ {
     ArgumentMissing(~str),
     UnrecognizedOption(~str),
@@ -446,7 +446,7 @@ pub fn opt_default(mm: &Matches, nm: &str, def: &str) -> Option<~str> {
                            _      => Some::<~str>(str::from_slice(def)) }
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum FailType {
     ArgumentMissing_,
     UnrecognizedOption_,
@@ -469,7 +469,7 @@ pub mod groups {
     /** one group of options, e.g., both -h and --help, along with
      * their shared description and properties
      */
-    #[deriving_eq]
+    #[deriving(Eq)]
     pub struct OptGroup {
         short_name: ~str,
         long_name: ~str,
diff --git a/src/libstd/list.rs b/src/libstd/list.rs
index 3a0f299257e09..eb1c249be6950 100644
--- a/src/libstd/list.rs
+++ b/src/libstd/list.rs
@@ -15,7 +15,7 @@ use core::option::*;
 use core::prelude::*;
 use core::vec;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum List<T> {
     Cons(T, @List<T>),
     Nil,
diff --git a/src/libstd/net_url.rs b/src/libstd/net_url.rs
index 4943b374980a9..6fb4f6747a3ee 100644
--- a/src/libstd/net_url.rs
+++ b/src/libstd/net_url.rs
@@ -25,7 +25,7 @@ use core::to_str::ToStr;
 use core::to_str;
 use core::uint;
 
-#[deriving_eq]
+#[deriving(Eq)]
 struct Url {
     scheme: ~str,
     user: Option<UserInfo>,
@@ -36,7 +36,7 @@ struct Url {
     fragment: Option<~str>
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 struct UserInfo {
     user: ~str,
     pass: Option<~str>
@@ -398,7 +398,7 @@ pub pure fn get_scheme(rawurl: &str) -> Result<(~str, ~str), ~str> {
     return Err(~"url: Scheme must be terminated with a colon.");
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 enum Input {
     Digit, // all digits
     Hex, // digits and letters a-f
diff --git a/src/libstd/semver.rs b/src/libstd/semver.rs
index e1e7f8ca92423..3593ccc5ae898 100644
--- a/src/libstd/semver.rs
+++ b/src/libstd/semver.rs
@@ -19,7 +19,7 @@ use core::str;
 use core::to_str::ToStr;
 use core::uint;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Identifier {
     Numeric(uint),
     AlphaNumeric(~str)
@@ -60,7 +60,7 @@ impl ToStr for Identifier {
 }
 
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct Version {
     major: uint,
     minor: uint,
diff --git a/src/libstd/test.rs b/src/libstd/test.rs
index fcc60c8d97819..1829e29826fd8 100644
--- a/src/libstd/test.rs
+++ b/src/libstd/test.rs
@@ -188,13 +188,13 @@ pub fn parse_opts(args: &[~str]) -> OptRes {
     either::Left(test_opts)
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct BenchSamples {
     ns_iter_samples: ~[f64],
     mb_s: uint
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum TestResult { TrOk, TrFailed, TrIgnored, TrBench(BenchSamples) }
 
 struct ConsoleTestState {
diff --git a/src/libstd/workcache.rs b/src/libstd/workcache.rs
index 68a6f8effaa77..f8b4337e437f2 100644
--- a/src/libstd/workcache.rs
+++ b/src/libstd/workcache.rs
@@ -96,7 +96,7 @@ use core::mutable::Mut;
 *
 */
 
-#[deriving_eq]
+#[deriving(Eq)]
 #[auto_encode]
 #[auto_decode]
 struct WorkKey {
diff --git a/src/libsyntax/ast.rs b/src/libsyntax/ast.rs
index 22ec88cd45625..cbdcef3eff65a 100644
--- a/src/libsyntax/ast.rs
+++ b/src/libsyntax/ast.rs
@@ -33,13 +33,13 @@ macro_rules! interner_key (
 // table and a SyntaxContext to track renaming and
 // macro expansion per Flatt et al., "Macros
 // That Work Together"
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct ident { repr: Name }
 
 // a SyntaxContext represents a chain of macro-expandings
 // and renamings. Each macro expansion corresponds to
 // a fresh uint
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum SyntaxContext {
     MT,
     Mark (Mrk,~SyntaxContext),
@@ -98,7 +98,7 @@ pub type fn_ident = Option<ident>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct Lifetime {
     id: node_id,
     span: span,
@@ -111,7 +111,7 @@ pub struct Lifetime {
 // of supporting information.
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct path {
     span: span,
     global: bool,
@@ -126,7 +126,7 @@ pub type node_id = int;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct def_id {
     crate: crate_num,
     node: node_id,
@@ -137,7 +137,7 @@ pub const crate_node_id: node_id = 0;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 // The AST represents all type param bounds as types.
 // typeck::collect::compute_bounds matches these against
 // the "special" built-in traits (see middle::lang_items) and
@@ -149,7 +149,7 @@ pub enum TyParamBound {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct TyParam {
     ident: ident,
     id: node_id,
@@ -158,7 +158,7 @@ pub struct TyParam {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct Generics {
     lifetimes: OptVec<Lifetime>,
     ty_params: OptVec<TyParam>
@@ -178,7 +178,7 @@ pub impl Generics {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum def {
     def_fn(def_id, purity),
     def_static_method(/* method */ def_id,
@@ -216,7 +216,7 @@ pub type crate = spanned<crate_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct crate_ {
     module: _mod,
     attrs: ~[attribute],
@@ -227,7 +227,7 @@ pub type meta_item = spanned<meta_item_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum meta_item_ {
     meta_word(@~str),
     meta_list(@~str, ~[@meta_item]),
@@ -238,7 +238,7 @@ pub type blk = spanned<blk_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct blk_ {
     view_items: ~[@view_item],
     stmts: ~[@stmt],
@@ -249,7 +249,7 @@ pub struct blk_ {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct pat {
     id: node_id,
     node: pat_,
@@ -258,7 +258,7 @@ pub struct pat {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct field_pat {
     ident: ident,
     pat: @pat,
@@ -266,7 +266,7 @@ pub struct field_pat {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum binding_mode {
     bind_by_copy,
     bind_by_ref(mutability),
@@ -289,7 +289,7 @@ impl to_bytes::IterBytes for binding_mode {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum pat_ {
     pat_wild,
     // A pat_ident may either be a new bound variable,
@@ -316,7 +316,7 @@ pub enum pat_ {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum mutability { m_mutbl, m_imm, m_const, }
 
 impl to_bytes::IterBytes for mutability {
@@ -327,7 +327,7 @@ impl to_bytes::IterBytes for mutability {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Abi {
     RustAbi
 }
@@ -348,7 +348,7 @@ impl ToStr for Abi {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Sigil {
     BorrowedSigil,
     OwnedSigil,
@@ -373,7 +373,7 @@ impl ToStr for Sigil {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum vstore {
     // FIXME (#3469): Change uint to @expr (actually only constant exprs)
     vstore_fixed(Option<uint>),     // [1,2,3,4]
@@ -384,7 +384,7 @@ pub enum vstore {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum expr_vstore {
     expr_vstore_fixed(Option<uint>),   // [1,2,3,4]
     expr_vstore_uniq,                  // ~[1,2,3,4]
@@ -396,7 +396,7 @@ pub enum expr_vstore {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum binop {
     add,
     subtract,
@@ -420,7 +420,7 @@ pub enum binop {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum unop {
     box(mutability),
     uniq(mutability),
@@ -433,7 +433,7 @@ pub enum unop {
 // using ty::resolved_T(...).
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum inferable<T> {
     expl(T),
     infer(node_id)
@@ -454,7 +454,7 @@ impl<T:to_bytes::IterBytes> to_bytes::IterBytes for inferable<T> {
 // "resolved" mode: the real modes.
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum rmode { by_ref, by_copy }
 
 impl to_bytes::IterBytes for rmode {
@@ -470,7 +470,7 @@ pub type stmt = spanned<stmt_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum stmt_ {
     stmt_decl(@decl, node_id),
 
@@ -488,7 +488,7 @@ pub enum stmt_ {
 // a refinement on pat.
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct local_ {
     is_mutbl: bool,
     ty: @Ty,
@@ -503,12 +503,12 @@ pub type decl = spanned<decl_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum decl_ { decl_local(~[@local]), decl_item(@item), }
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct arm {
     pats: ~[@pat],
     guard: Option<@expr>,
@@ -517,7 +517,7 @@ pub struct arm {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct field_ {
     mutbl: mutability,
     ident: ident,
@@ -528,12 +528,12 @@ pub type field = spanned<field_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum blk_check_mode { default_blk, unsafe_blk, }
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct expr {
     id: node_id,
     // Extra node ID is only used for index, assign_op, unary, binary, method
@@ -545,13 +545,13 @@ pub struct expr {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum log_level { error, debug, log_other }
 // 0 = error, 1 = debug, 2 = log_other
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum CallSugar {
     NoSugar,
     DoSugar,
@@ -560,7 +560,7 @@ pub enum CallSugar {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum expr_ {
     expr_vstore(@expr, expr_vstore),
     expr_vec(~[@expr], mutability),
@@ -634,7 +634,7 @@ pub enum expr_ {
 //
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 #[doc="For macro invocations; parsing is delegated to the macro"]
 pub enum token_tree {
     // a single token
@@ -709,7 +709,7 @@ pub type matcher = spanned<matcher_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum matcher_ {
     // match one token
     match_tok(::parse::token::Token),
@@ -724,7 +724,7 @@ pub type mac = spanned<mac_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum mac_ {
     mac_invoc_tt(@path,~[token_tree]),   // new macro-invocation
 }
@@ -733,7 +733,7 @@ pub type lit = spanned<lit_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum lit_ {
     lit_str(@~str),
     lit_int(i64, int_ty),
@@ -749,7 +749,7 @@ pub enum lit_ {
 // type structure in middle/ty.rs as well.
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct mt {
     ty: @Ty,
     mutbl: mutability,
@@ -757,7 +757,7 @@ pub struct mt {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct ty_field_ {
     ident: ident,
     mt: mt,
@@ -767,7 +767,7 @@ pub type ty_field = spanned<ty_field_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct ty_method {
     ident: ident,
     attrs: ~[attribute],
@@ -781,7 +781,7 @@ pub struct ty_method {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 // A trait method is either required (meaning it doesn't have an
 // implementation, just a signature) or provided (meaning it has a default
 // implementation).
@@ -792,7 +792,7 @@ pub enum trait_method {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum int_ty { ty_i, ty_char, ty_i8, ty_i16, ty_i32, ty_i64, }
 
 impl ToStr for int_ty {
@@ -809,7 +809,7 @@ impl to_bytes::IterBytes for int_ty {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum uint_ty { ty_u, ty_u8, ty_u16, ty_u32, ty_u64, }
 
 impl ToStr for uint_ty {
@@ -826,7 +826,7 @@ impl to_bytes::IterBytes for uint_ty {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum float_ty { ty_f, ty_f32, ty_f64, }
 
 impl ToStr for float_ty {
@@ -844,7 +844,7 @@ impl to_bytes::IterBytes for float_ty {
 // NB Eq method appears below.
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct Ty {
     id: node_id,
     node: ty_,
@@ -854,7 +854,7 @@ pub struct Ty {
 // Not represented directly in the AST, referred to by name through a ty_path.
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum prim_ty {
     ty_int(int_ty),
     ty_uint(uint_ty),
@@ -865,7 +865,7 @@ pub enum prim_ty {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Onceness {
     Once,
     Many
@@ -888,7 +888,7 @@ impl to_bytes::IterBytes for Onceness {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct TyClosure {
     sigil: Sigil,
     region: Option<@Lifetime>,
@@ -899,7 +899,7 @@ pub struct TyClosure {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct TyBareFn {
     purity: purity,
     abi: Abi,
@@ -908,7 +908,7 @@ pub struct TyBareFn {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum ty_ {
     ty_nil,
     ty_bot, /* bottom type */
@@ -937,7 +937,7 @@ impl to_bytes::IterBytes for Ty {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct arg {
     mode: mode,
     is_mutbl: bool,
@@ -948,7 +948,7 @@ pub struct arg {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct fn_decl {
     inputs: ~[arg],
     output: @Ty,
@@ -957,7 +957,7 @@ pub struct fn_decl {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum purity {
     pure_fn, // declared with "pure fn"
     unsafe_fn, // declared with "unsafe fn"
@@ -984,7 +984,7 @@ impl to_bytes::IterBytes for purity {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum ret_style {
     noreturn, // functions with return type _|_ that always
               // raise an error or exit (i.e. never return to the caller)
@@ -999,7 +999,7 @@ impl to_bytes::IterBytes for ret_style {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum self_ty_ {
     sty_static,                                // no self
     sty_by_ref,                                // ``
@@ -1022,7 +1022,7 @@ pub type self_ty = spanned<self_ty_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct method {
     ident: ident,
     attrs: ~[attribute],
@@ -1039,7 +1039,7 @@ pub struct method {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct _mod {
     view_items: ~[@view_item],
     items: ~[@item],
@@ -1047,7 +1047,7 @@ pub struct _mod {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum foreign_abi {
     foreign_abi_rust_intrinsic,
     foreign_abi_cdecl,
@@ -1057,12 +1057,12 @@ pub enum foreign_abi {
 // Foreign mods can be named or anonymous
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum foreign_mod_sort { named, anonymous }
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct foreign_mod {
     sort: foreign_mod_sort,
     abi: ident,
@@ -1072,7 +1072,7 @@ pub struct foreign_mod {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct variant_arg {
     ty: @Ty,
     id: node_id,
@@ -1080,7 +1080,7 @@ pub struct variant_arg {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum variant_kind {
     tuple_variant_kind(~[variant_arg]),
     struct_variant_kind(@struct_def),
@@ -1089,7 +1089,7 @@ pub enum variant_kind {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct enum_def {
     variants: ~[variant],
     common: Option<@struct_def>,
@@ -1097,7 +1097,7 @@ pub struct enum_def {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct variant_ {
     name: ident,
     attrs: ~[attribute],
@@ -1111,7 +1111,7 @@ pub type variant = spanned<variant_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct path_list_ident_ {
     name: ident,
     id: node_id,
@@ -1121,14 +1121,14 @@ pub type path_list_ident = spanned<path_list_ident_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum namespace { module_ns, type_value_ns }
 
 pub type view_path = spanned<view_path_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum view_path_ {
 
     // quux = foo::bar::baz
@@ -1147,7 +1147,7 @@ pub enum view_path_ {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct view_item {
     node: view_item_,
     attrs: ~[attribute],
@@ -1157,7 +1157,7 @@ pub struct view_item {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum view_item_ {
     view_item_extern_mod(ident, ~[@meta_item], node_id),
     view_item_use(~[@view_path]),
@@ -1171,13 +1171,13 @@ pub type attribute = spanned<attribute_>;
 // distinguished for pretty-printing.
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum attr_style { attr_outer, attr_inner, }
 
 // doc-comments are promoted to attributes that have is_sugared_doc = true
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct attribute_ {
     style: attr_style,
     value: @meta_item,
@@ -1193,7 +1193,7 @@ pub struct attribute_ {
  */
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct trait_ref {
     path: @path,
     ref_id: node_id,
@@ -1201,12 +1201,12 @@ pub struct trait_ref {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum visibility { public, private, inherited }
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct struct_field_ {
     kind: struct_field_kind,
     id: node_id,
@@ -1217,7 +1217,7 @@ pub type struct_field = spanned<struct_field_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum struct_field_kind {
     named_field(ident, struct_mutability, visibility),
     unnamed_field   // element of a tuple-like struct
@@ -1225,7 +1225,7 @@ pub enum struct_field_kind {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct struct_def {
     fields: ~[@struct_field], /* fields */
     /* (not including ctor or dtor) */
@@ -1242,7 +1242,7 @@ pub struct struct_def {
  */
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct item {
     ident: ident,
     attrs: ~[attribute],
@@ -1254,7 +1254,7 @@ pub struct item {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum item_ {
     item_const(@Ty, @expr),
     item_fn(fn_decl, purity, Generics, blk),
@@ -1274,7 +1274,7 @@ pub enum item_ {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum struct_mutability { struct_mutable, struct_immutable }
 
 impl to_bytes::IterBytes for struct_mutability {
@@ -1287,7 +1287,7 @@ pub type struct_dtor = spanned<struct_dtor_>;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct struct_dtor_ {
     id: node_id,
     attrs: ~[attribute],
@@ -1297,7 +1297,7 @@ pub struct struct_dtor_ {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct foreign_item {
     ident: ident,
     attrs: ~[attribute],
@@ -1309,7 +1309,7 @@ pub struct foreign_item {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum foreign_item_ {
     foreign_item_fn(fn_decl, purity, Generics),
     foreign_item_const(@Ty)
@@ -1320,7 +1320,7 @@ pub enum foreign_item_ {
 // that we trans.
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum inlined_item {
     ii_item(@item),
     ii_method(def_id /* impl id */, @method),
diff --git a/src/libsyntax/ast_util.rs b/src/libsyntax/ast_util.rs
index 35b188a248fd4..1225e71cb8c1f 100644
--- a/src/libsyntax/ast_util.rs
+++ b/src/libsyntax/ast_util.rs
@@ -582,7 +582,7 @@ pub fn variant_visibility_to_privacy(visibility: visibility,
     }
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Privacy {
     Private,
     Public
diff --git a/src/libsyntax/codemap.rs b/src/libsyntax/codemap.rs
index c2309dbf0e8eb..c84e3abf50bc9 100644
--- a/src/libsyntax/codemap.rs
+++ b/src/libsyntax/codemap.rs
@@ -128,7 +128,7 @@ pub struct span {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct spanned<T> { node: T, span: span }
 
 impl cmp::Eq for span {
diff --git a/src/libsyntax/diagnostic.rs b/src/libsyntax/diagnostic.rs
index 93d28f31c8db4..eed36e16754f5 100644
--- a/src/libsyntax/diagnostic.rs
+++ b/src/libsyntax/diagnostic.rs
@@ -160,7 +160,7 @@ pub fn mk_handler(emitter: Option<Emitter>) -> @handler {
     @mut HandlerT { err_count: 0, emit: emit } as @handler
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum level {
     fatal,
     error,
diff --git a/src/libsyntax/ext/auto_encode.rs b/src/libsyntax/ext/auto_encode.rs
index 3ab95258f038e..e5f818eef5c23 100644
--- a/src/libsyntax/ext/auto_encode.rs
+++ b/src/libsyntax/ext/auto_encode.rs
@@ -1204,7 +1204,7 @@ mod test {
     use std::serialize::Encoder;
 
     // just adding the ones I want to test, for now:
-    #[deriving_eq]
+    #[deriving(Eq)]
     pub enum call {
         CallToEmitEnum(~str),
         CallToEmitEnumVariant(~str, uint, uint),
diff --git a/src/libsyntax/ext/base.rs b/src/libsyntax/ext/base.rs
index 34e4d8c73e72c..50f89d37fae8e 100644
--- a/src/libsyntax/ext/base.rs
+++ b/src/libsyntax/ext/base.rs
@@ -153,13 +153,13 @@ pub fn syntax_expander_table() -> SyntaxEnv {
                                 ext::deriving::expand_meta_deriving)));
     syntax_expanders.insert(@~"deriving_eq",
                             @SE(ItemDecorator(
-                                ext::deriving::eq::expand_deriving_eq)));
+                                ext::deriving::eq::expand_deriving_obsolete)));
     syntax_expanders.insert(@~"deriving_iter_bytes",
                             @SE(ItemDecorator(
-                                ext::deriving::iter_bytes::expand_deriving_iter_bytes)));
+                                ext::deriving::iter_bytes::expand_deriving_obsolete)));
     syntax_expanders.insert(@~"deriving_clone",
                             @SE(ItemDecorator(
-                                ext::deriving::clone::expand_deriving_clone)));
+                                ext::deriving::clone::expand_deriving_obsolete)));
 
     // Quasi-quoting expanders
     syntax_expanders.insert(@~"quote_tokens",
diff --git a/src/libsyntax/ext/deriving/clone.rs b/src/libsyntax/ext/deriving/clone.rs
index 072cd0f6c39b2..4ab83cb5f1e42 100644
--- a/src/libsyntax/ext/deriving/clone.rs
+++ b/src/libsyntax/ext/deriving/clone.rs
@@ -39,6 +39,15 @@ pub fn expand_deriving_clone(cx: @ext_ctxt,
                     expand_deriving_clone_enum_def)
 }
 
+pub fn expand_deriving_obsolete(cx: @ext_ctxt,
+                                span: span,
+                                _mitem: @meta_item,
+                                in_items: ~[@item])
+                             -> ~[@item] {
+    cx.span_err(span, ~"`#[deriving_clone]` is obsolete; use `#[deriving(Clone)]` instead");
+    in_items
+}
+
 fn create_derived_clone_impl(cx: @ext_ctxt,
                              span: span,
                              type_ident: ident,
diff --git a/src/libsyntax/ext/deriving/eq.rs b/src/libsyntax/ext/deriving/eq.rs
index 6213eeca13461..5e94134f70afe 100644
--- a/src/libsyntax/ext/deriving/eq.rs
+++ b/src/libsyntax/ext/deriving/eq.rs
@@ -53,6 +53,15 @@ pub fn expand_deriving_eq(cx: @ext_ctxt,
                     expand_deriving_eq_enum_def)
 }
 
+pub fn expand_deriving_obsolete(cx: @ext_ctxt,
+                                span: span,
+                                _mitem: @meta_item,
+                                in_items: ~[@item])
+                             -> ~[@item] {
+    cx.span_err(span, ~"`#[deriving_eq]` is obsolete; use `#[deriving(Eq)]` instead");
+    in_items
+}
+
 /// Creates a method from the given expression, the signature of which
 /// conforms to the `eq` or `ne` method.
 fn create_eq_method(cx: @ext_ctxt,
diff --git a/src/libsyntax/ext/deriving/iter_bytes.rs b/src/libsyntax/ext/deriving/iter_bytes.rs
index 613e9c295eb74..75d7b396c7e15 100644
--- a/src/libsyntax/ext/deriving/iter_bytes.rs
+++ b/src/libsyntax/ext/deriving/iter_bytes.rs
@@ -39,6 +39,16 @@ pub fn expand_deriving_iter_bytes(cx: @ext_ctxt,
                     expand_deriving_iter_bytes_enum_def)
 }
 
+pub fn expand_deriving_obsolete(cx: @ext_ctxt,
+                                span: span,
+                                _mitem: @meta_item,
+                                in_items: ~[@item])
+                             -> ~[@item] {
+    cx.span_err(span, ~"`#[deriving_iter_bytes]` is obsolete; use `#[deriving(IterBytes)]` \
+                        instead");
+    in_items
+}
+
 fn create_derived_iter_bytes_impl(cx: @ext_ctxt,
                                   span: span,
                                   type_ident: ident,
diff --git a/src/libsyntax/ext/deriving/mod.rs b/src/libsyntax/ext/deriving/mod.rs
index 63bb438999969..57fddd623d474 100644
--- a/src/libsyntax/ext/deriving/mod.rs
+++ b/src/libsyntax/ext/deriving/mod.rs
@@ -8,8 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-/// The compiler code necessary to implement the #[deriving_eq] and
-/// #[deriving_iter_bytes] extensions.
+/// The compiler code necessary to implement the #[deriving(Eq)] and
+/// #[deriving(IterBytes)] extensions.
 
 use core::prelude::*;
 
diff --git a/src/libsyntax/ext/pipes/proto.rs b/src/libsyntax/ext/pipes/proto.rs
index a47b39a45c864..d72da6f2d350e 100644
--- a/src/libsyntax/ext/pipes/proto.rs
+++ b/src/libsyntax/ext/pipes/proto.rs
@@ -17,7 +17,7 @@ use ext::pipes::ast_builder::{append_types, ext_ctxt_ast_builder, path};
 
 use core::to_str::ToStr;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum direction { send, recv }
 
 impl ToStr for direction {
diff --git a/src/libsyntax/opt_vec.rs b/src/libsyntax/opt_vec.rs
index dbabca55a11f4..435bfbdad24bf 100644
--- a/src/libsyntax/opt_vec.rs
+++ b/src/libsyntax/opt_vec.rs
@@ -106,7 +106,7 @@ impl<T:Copy> OptVec<T> {
 
 impl<A:Eq> Eq for OptVec<A> {
     pure fn eq(&self, other: &OptVec<A>) -> bool {
-        // Note: cannot use #[deriving_eq] here because
+        // Note: cannot use #[deriving(Eq)] here because
         // (Empty, Vec(~[])) ought to be equal.
         match (self, other) {
             (&Empty, &Empty) => true,
diff --git a/src/libsyntax/parse/lexer.rs b/src/libsyntax/parse/lexer.rs
index b92b72822740f..f53ac2719019d 100644
--- a/src/libsyntax/parse/lexer.rs
+++ b/src/libsyntax/parse/lexer.rs
@@ -37,7 +37,7 @@ pub trait reader {
     fn dup(@mut self) -> @reader;
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub struct TokenAndSpan {tok: token::Token, sp: span}
 
 pub struct StringReader {
diff --git a/src/libsyntax/parse/obsolete.rs b/src/libsyntax/parse/obsolete.rs
index 573f90af020a2..5cc1ea756e4d7 100644
--- a/src/libsyntax/parse/obsolete.rs
+++ b/src/libsyntax/parse/obsolete.rs
@@ -30,7 +30,7 @@ use core::str;
 use core::to_bytes;
 
 /// The specific types of unsupported syntax
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum ObsoleteSyntax {
     ObsoleteLowerCaseKindBounds,
     ObsoleteLet,
diff --git a/src/libsyntax/parse/parser.rs b/src/libsyntax/parse/parser.rs
index 95f8afd538a8c..e899c79a74cb7 100644
--- a/src/libsyntax/parse/parser.rs
+++ b/src/libsyntax/parse/parser.rs
@@ -93,7 +93,7 @@ use core::either;
 use core::vec;
 use std::oldmap::HashMap;
 
-#[deriving_eq]
+#[deriving(Eq)]
 enum restriction {
     UNRESTRICTED,
     RESTRICT_STMT_EXPR,
diff --git a/src/libsyntax/parse/token.rs b/src/libsyntax/parse/token.rs
index c41b3aec09bdc..5a774718b7d09 100644
--- a/src/libsyntax/parse/token.rs
+++ b/src/libsyntax/parse/token.rs
@@ -24,7 +24,7 @@ use std::oldmap::HashMap;
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum binop {
     PLUS,
     MINUS,
@@ -40,7 +40,7 @@ pub enum binop {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Token {
     /* Expression-operator symbols. */
     EQ,
@@ -103,7 +103,7 @@ pub enum Token {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 /// For interpolation during macro expansion.
 pub enum nonterminal {
     nt_item(@ast::item),
diff --git a/src/libsyntax/print/pp.rs b/src/libsyntax/print/pp.rs
index ed108df7db250..d002267547351 100644
--- a/src/libsyntax/print/pp.rs
+++ b/src/libsyntax/print/pp.rs
@@ -66,7 +66,7 @@ use core::vec;
  * line (which it can't) and so naturally place the content on its own line to
  * avoid combining it with other lines and making matters even worse.
  */
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum breaks { consistent, inconsistent, }
 
 pub struct break_t {
diff --git a/src/test/compile-fail/deriving-obsolete.rs b/src/test/compile-fail/deriving-obsolete.rs
new file mode 100644
index 0000000000000..298dced1e21ed
--- /dev/null
+++ b/src/test/compile-fail/deriving-obsolete.rs
@@ -0,0 +1,17 @@
+// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#[deriving_clone] //~ ERROR `#[deriving_clone]` is obsolete; use `#[deriving(Clone)]` instead
+#[deriving_eq] //~ ERROR `#[deriving_eq]` is obsolete; use `#[deriving(Eq)]` instead
+#[deriving_iter_bytes]
+//~^ ERROR `#[deriving_iter_bytes]` is obsolete; use `#[deriving(IterBytes)]` instead
+struct Foo;
+
+pub fn main() { }
diff --git a/src/test/run-fail/assert-eq-macro-fail.rs b/src/test/run-fail/assert-eq-macro-fail.rs
index a5f438903ce9b..d3177e7c0a8a8 100644
--- a/src/test/run-fail/assert-eq-macro-fail.rs
+++ b/src/test/run-fail/assert-eq-macro-fail.rs
@@ -1,6 +1,6 @@
 // error-pattern:expected: 15, given: 14
 
-#[deriving_eq]
+#[deriving(Eq)]
 struct Point { x : int }
 
 fn main() {
diff --git a/src/test/run-pass/assert-eq-macro-success.rs b/src/test/run-pass/assert-eq-macro-success.rs
index c929b5c6246e9..b204e1aba3a71 100644
--- a/src/test/run-pass/assert-eq-macro-success.rs
+++ b/src/test/run-pass/assert-eq-macro-success.rs
@@ -1,4 +1,4 @@
-#[deriving_eq]
+#[deriving(Eq)]
 struct Point { x : int }
 
 fn main() {
diff --git a/src/test/run-pass/auto-encode.rs b/src/test/run-pass/auto-encode.rs
index b6fdb07789c8d..7538892f03892 100644
--- a/src/test/run-pass/auto-encode.rs
+++ b/src/test/run-pass/auto-encode.rs
@@ -121,7 +121,7 @@ impl cmp::Eq for CLike {
 
 #[auto_encode]
 #[auto_decode]
-#[deriving_eq]
+#[deriving(Eq)]
 struct Spanned<T> {
     lo: uint,
     hi: uint,
diff --git a/src/test/run-pass/binops.rs b/src/test/run-pass/binops.rs
index bcc76cc35858f..3f5547df17d8f 100644
--- a/src/test/run-pass/binops.rs
+++ b/src/test/run-pass/binops.rs
@@ -88,7 +88,7 @@ mod test {
     }
 }
 
-#[deriving_eq]
+#[deriving(Eq)]
 struct p {
   x: int,
   y: int,
diff --git a/src/test/run-pass/deriving-clone-enum.rs b/src/test/run-pass/deriving-clone-enum.rs
index bad83f41bac65..ee294cb594230 100644
--- a/src/test/run-pass/deriving-clone-enum.rs
+++ b/src/test/run-pass/deriving-clone-enum.rs
@@ -1,4 +1,4 @@
-#[deriving_clone]
+#[deriving(Clone)]
 enum E {
     A,
     B(()),
diff --git a/src/test/run-pass/deriving-clone-generic-enum.rs b/src/test/run-pass/deriving-clone-generic-enum.rs
index c70e644e2a860..a868db2425cc2 100644
--- a/src/test/run-pass/deriving-clone-generic-enum.rs
+++ b/src/test/run-pass/deriving-clone-generic-enum.rs
@@ -1,4 +1,4 @@
-#[deriving_clone]
+#[deriving(Clone)]
 enum E<T,U> {
     A(T),
     B(T,U),
diff --git a/src/test/run-pass/deriving-clone-generic-struct.rs b/src/test/run-pass/deriving-clone-generic-struct.rs
index 73fb3ad8d6477..92721c5343573 100644
--- a/src/test/run-pass/deriving-clone-generic-struct.rs
+++ b/src/test/run-pass/deriving-clone-generic-struct.rs
@@ -1,4 +1,4 @@
-#[deriving_clone]
+#[deriving(Clone)]
 struct S<T> {
     foo: (),
     bar: (),
diff --git a/src/test/run-pass/deriving-clone-generic-tuple-struct.rs b/src/test/run-pass/deriving-clone-generic-tuple-struct.rs
index d7b15d63280d0..aeaa9ed726d2b 100644
--- a/src/test/run-pass/deriving-clone-generic-tuple-struct.rs
+++ b/src/test/run-pass/deriving-clone-generic-tuple-struct.rs
@@ -1,4 +1,4 @@
-#[deriving_clone]
+#[deriving(Clone)]
 struct S<T>(T, ());
 
 fn main() {}
diff --git a/src/test/run-pass/deriving-clone-struct.rs b/src/test/run-pass/deriving-clone-struct.rs
index 07830e7ee096b..4dcbadbb3ef92 100644
--- a/src/test/run-pass/deriving-clone-struct.rs
+++ b/src/test/run-pass/deriving-clone-struct.rs
@@ -1,4 +1,4 @@
-#[deriving_clone]
+#[deriving(Clone)]
 struct S {
     _int: int,
     _i8: i8,
diff --git a/src/test/run-pass/deriving-clone-tuple-struct.rs b/src/test/run-pass/deriving-clone-tuple-struct.rs
index a1a79613d401f..04ddb439485fd 100644
--- a/src/test/run-pass/deriving-clone-tuple-struct.rs
+++ b/src/test/run-pass/deriving-clone-tuple-struct.rs
@@ -1,4 +1,4 @@
-#[deriving_clone]
+#[deriving(Clone)]
 struct S((), ());
 
 fn main() {}
diff --git a/src/test/run-pass/deriving-enum-single-variant.rs b/src/test/run-pass/deriving-enum-single-variant.rs
index 7b86a6299f6f7..ebbdc157c7d13 100644
--- a/src/test/run-pass/deriving-enum-single-variant.rs
+++ b/src/test/run-pass/deriving-enum-single-variant.rs
@@ -1,6 +1,6 @@
 type task_id = int;
 
-#[deriving_eq]
+#[deriving(Eq)]
 pub enum Task {
     TaskHandle(task_id)
 }
diff --git a/src/test/run-pass/deriving-via-extension-c-enum.rs b/src/test/run-pass/deriving-via-extension-c-enum.rs
index 9431e6b8343ca..47d088cfc6f26 100644
--- a/src/test/run-pass/deriving-via-extension-c-enum.rs
+++ b/src/test/run-pass/deriving-via-extension-c-enum.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#[deriving_eq]
+#[deriving(Eq)]
 enum Foo {
     Bar,
     Baz,
diff --git a/src/test/run-pass/deriving-via-extension-enum.rs b/src/test/run-pass/deriving-via-extension-enum.rs
index 35575285e7a7d..32f693abf2555 100644
--- a/src/test/run-pass/deriving-via-extension-enum.rs
+++ b/src/test/run-pass/deriving-via-extension-enum.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#[deriving_eq]
+#[deriving(Eq)]
 enum Foo {
     Bar(int, int),
     Baz(float, float)
diff --git a/src/test/run-pass/deriving-via-extension-iter-bytes-enum.rs b/src/test/run-pass/deriving-via-extension-iter-bytes-enum.rs
index b41d41192fedb..5ceb8c48750d9 100644
--- a/src/test/run-pass/deriving-via-extension-iter-bytes-enum.rs
+++ b/src/test/run-pass/deriving-via-extension-iter-bytes-enum.rs
@@ -10,13 +10,13 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#[deriving_iter_bytes]
+#[deriving(IterBytes)]
 enum Foo {
     Bar(int, char),
     Baz(char, int)
 }
 
-#[deriving_iter_bytes]
+#[deriving(IterBytes)]
 enum A {
     B,
     C,
diff --git a/src/test/run-pass/deriving-via-extension-iter-bytes-struct.rs b/src/test/run-pass/deriving-via-extension-iter-bytes-struct.rs
index 18336d74c7e19..9f18cb6ac58a7 100644
--- a/src/test/run-pass/deriving-via-extension-iter-bytes-struct.rs
+++ b/src/test/run-pass/deriving-via-extension-iter-bytes-struct.rs
@@ -10,7 +10,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#[deriving_iter_bytes]
+#[deriving(IterBytes)]
 struct Foo {
     x: int,
     y: int,
diff --git a/src/test/run-pass/deriving-via-extension-struct-empty.rs b/src/test/run-pass/deriving-via-extension-struct-empty.rs
index 4c8c81d5312f9..09ee83870a0e2 100644
--- a/src/test/run-pass/deriving-via-extension-struct-empty.rs
+++ b/src/test/run-pass/deriving-via-extension-struct-empty.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#[deriving_eq]
+#[deriving(Eq)]
 struct Foo;
 
 pub fn main() {
diff --git a/src/test/run-pass/deriving-via-extension-struct-like-enum-variant.rs b/src/test/run-pass/deriving-via-extension-struct-like-enum-variant.rs
index 0f44f7b7cf980..c349600eb9998 100644
--- a/src/test/run-pass/deriving-via-extension-struct-like-enum-variant.rs
+++ b/src/test/run-pass/deriving-via-extension-struct-like-enum-variant.rs
@@ -1,4 +1,4 @@
-#[deriving_eq]
+#[deriving(Eq)]
 enum S {
     X { x: int, y: int },
     Y
diff --git a/src/test/run-pass/deriving-via-extension-struct-tuple.rs b/src/test/run-pass/deriving-via-extension-struct-tuple.rs
index ab68d50249100..35c20c13e9371 100644
--- a/src/test/run-pass/deriving-via-extension-struct-tuple.rs
+++ b/src/test/run-pass/deriving-via-extension-struct-tuple.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#[deriving_eq]
+#[deriving(Eq)]
 struct Foo(int, int, ~str);
 
 pub fn main() {
diff --git a/src/test/run-pass/deriving-via-extension-struct.rs b/src/test/run-pass/deriving-via-extension-struct.rs
index f1d50e4e824ea..f5cc85c638250 100644
--- a/src/test/run-pass/deriving-via-extension-struct.rs
+++ b/src/test/run-pass/deriving-via-extension-struct.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#[deriving_eq]
+#[deriving(Eq)]
 struct Foo {
     x: int,
     y: int,
diff --git a/src/test/run-pass/deriving-via-extension-type-params.rs b/src/test/run-pass/deriving-via-extension-type-params.rs
index 07c09dc7fd4f6..298e30f7ec1e7 100644
--- a/src/test/run-pass/deriving-via-extension-type-params.rs
+++ b/src/test/run-pass/deriving-via-extension-type-params.rs
@@ -10,8 +10,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#[deriving_eq]
-#[deriving_iter_bytes]
+#[deriving(Eq)]
+#[deriving(IterBytes)]
 struct Foo<T> {
     x: int,
     y: T,
diff --git a/src/test/run-pass/extern-pass-TwoU64s-ref.rs b/src/test/run-pass/extern-pass-TwoU64s-ref.rs
index 00754afa703b2..f04e9d086e94f 100644
--- a/src/test/run-pass/extern-pass-TwoU64s-ref.rs
+++ b/src/test/run-pass/extern-pass-TwoU64s-ref.rs
@@ -12,7 +12,7 @@
 
 // xfail-test --- broken on 32-bit ABIs! (#5347)
 
-#[deriving_eq]
+#[deriving(Eq)]
 struct TwoU64s {
     one: u64, two: u64
 }
diff --git a/src/test/run-pass/extern-pass-TwoU64s.rs b/src/test/run-pass/extern-pass-TwoU64s.rs
index 2baf383ce545f..1937ddaa9f42a 100644
--- a/src/test/run-pass/extern-pass-TwoU64s.rs
+++ b/src/test/run-pass/extern-pass-TwoU64s.rs
@@ -13,7 +13,7 @@
 
 // xfail-test --- broken on 32-bit ABIs! (#5347)
 
-#[deriving_eq]
+#[deriving(Eq)]
 struct TwoU64s {
     one: u64, two: u64
 }
diff --git a/src/test/run-pass/issue-2718.rs b/src/test/run-pass/issue-2718.rs
index c8c2d381a7e99..cc4f10ca347b4 100644
--- a/src/test/run-pass/issue-2718.rs
+++ b/src/test/run-pass/issue-2718.rs
@@ -20,7 +20,7 @@ pub mod pipes {
         payload: Option<T>
     }
 
-    #[deriving_eq]
+    #[deriving(Eq)]
     pub enum state {
         empty,
         full,
diff --git a/src/test/run-pass/issue-3935.rs b/src/test/run-pass/issue-3935.rs
index e0832bc74b2f3..626932850cf42 100644
--- a/src/test/run-pass/issue-3935.rs
+++ b/src/test/run-pass/issue-3935.rs
@@ -8,7 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-#[deriving_eq]
+#[deriving(Eq)]
 struct Bike {
     name: ~str,
 }
diff --git a/src/test/run-pass/while-prelude-drop.rs b/src/test/run-pass/while-prelude-drop.rs
index da3f28f5b7bca..082f2db259a4a 100644
--- a/src/test/run-pass/while-prelude-drop.rs
+++ b/src/test/run-pass/while-prelude-drop.rs
@@ -9,7 +9,7 @@
 // except according to those terms.
 
 
-#[deriving_eq]
+#[deriving(Eq)]
 enum t { a, b(~str), }
 
 fn make(i: int) -> t {