diff --git a/macrotypes/examples/stlc+lit.rkt b/macrotypes/examples/stlc+lit.rkt
index 05fd9db..5973b25 100644
--- a/macrotypes/examples/stlc+lit.rkt
+++ b/macrotypes/examples/stlc+lit.rkt
@@ -1,6 +1,5 @@
 #lang s-exp macrotypes/typecheck
 (extends "stlc.rkt")
-(provide define-primop)
  
 ;; Simply-Typed Lambda Calculus, plus numeric literals and primitives
 ;; Types:
@@ -10,27 +9,9 @@
 ;; - terms from stlc.rkt
 ;; - numeric literals
 ;; - prim +
-;; Typechecking forms:
-;; - define-primop
 
 (define-base-type Int)
 
-;; Using τ.norm leads to a "not valid type" error when file is compiled
-(define-syntax define-primop
-  (syntax-parser #:datum-literals (:)
-    [(_ op:id : τ)
-     #:with op/tc (generate-temporary #'op)
-     #'(begin
-         (provide (rename-out [op/tc op]))
-         (define-primop op/tc op : τ))]
-    [(_ op/tc op : τ:type)
-     #'(begin
-         #;(define-syntax op/tc (make-rename-transformer (assign-type #'op #'τ)))
-         ; rename transformer doesnt seem to expand at the right time
-         ; - op still has no type in #%app
-         (define-syntax op/tc
-           (make-variable-like-transformer (assign-type #'op #'τ))))]))
-
 (define-primop + : (→ Int Int Int))
 
 (define-typed-syntax #%datum #:literals (#%datum)
diff --git a/macrotypes/examples/stlc+tup.rkt b/macrotypes/examples/stlc+tup.rkt
index 988a2e1..57b05d1 100644
--- a/macrotypes/examples/stlc+tup.rkt
+++ b/macrotypes/examples/stlc+tup.rkt
@@ -1,7 +1,5 @@
 #lang s-exp macrotypes/typecheck
 (extends "ext-stlc.rkt")
-
-(require (for-syntax racket/list))
  
 ;; Simply-Typed Lambda Calculus, plus tuples
 ;; Types:
diff --git a/macrotypes/examples/stlc.rkt b/macrotypes/examples/stlc.rkt
index 6d9f604..d2c310d 100644
--- a/macrotypes/examples/stlc.rkt
+++ b/macrotypes/examples/stlc.rkt
@@ -1,7 +1,4 @@
 #lang s-exp macrotypes/typecheck
-(provide (for-syntax current-type=? types=?))
-
-(require (for-syntax racket/list))
 
 ;; Simply-Typed Lambda Calculus
 ;; - no base types; can't write any terms
@@ -10,12 +7,6 @@
 ;; - var
 ;; - multi-arg λ (0+)
 ;; - multi-arg #%app (0+)
-;; Other:
-;; - "type" syntax category; defines:
-;;   - define-base-type
-;;   - define-type-constructor
-
-(define-syntax-category type)
 
 (define-type-constructor → #:arity >= 1
   #:arg-variances (λ (stx)
@@ -35,7 +26,8 @@
    #:with [e_fn- (~→ τ_in ... τ_out)] (infer+erase #'e_fn)
    #:with ([e_arg- τ_arg] ...) (infers+erase #'(e_arg ...))
    #:fail-unless (stx-length=? #'(τ_arg ...) #'(τ_in ...))
-   (num-args-fail-msg #'e_fn #'(τ_in ...) #'(e_arg ...))
+                 (num-args-fail-msg #'e_fn #'(τ_in ...) #'(e_arg ...))
    #:fail-unless (typechecks? #'(τ_arg ...) #'(τ_in ...))
-   (typecheck-fail-msg/multi #'(τ_in ...) #'(τ_arg ...) #'(e_arg ...))
+                 (typecheck-fail-msg/multi 
+                  #'(τ_in ...) #'(τ_arg ...) #'(e_arg ...))
    (⊢ (#%app- e_fn- e_arg- ...) : τ_out)])
diff --git a/macrotypes/typecheck.rkt b/macrotypes/typecheck.rkt
index 5449439..a74a74f 100644
--- a/macrotypes/typecheck.rkt
+++ b/macrotypes/typecheck.rkt
@@ -46,7 +46,7 @@
     [(_ . stuff)
      (syntax/loc this-syntax
        (#%module-begin
-        (provide #%module-begin #%top-interaction #%top require) ; useful racket forms
+        (provide #%module-begin #%top-interaction #%top require only-in) ; useful racket forms
         . stuff))]))
 
 (struct exn:fail:type:runtime exn:fail:user ())
@@ -839,6 +839,23 @@
            (syntax-parser
              [(_ (~var x id) . rst)  #'(define-basic-checked-stx x : name . rst)])))]))
 
+;; pre-declare all type-related functions and forms
+(define-syntax-category type)
+
+(define-syntax define-primop
+  (syntax-parser #:datum-literals (:)
+    [(define-primop op:id : τ)
+     #:with op/tc (generate-temporary #'op)
+     #`(begin-
+         (provide- #,(syntax/loc this-syntax (rename-out- [op/tc op])))
+         (define-primop op/tc op : τ))]
+    [(define-primop op/tc op : τ:type)
+     #'(begin-
+         ; rename transformer doesnt seem to expand at the right time
+         ; - op still has no type in #%app
+         (define-syntax op/tc
+           (make-variable-like-transformer (assign-type #'op #'τ))))]))
+
 ; substitution
 (begin-for-syntax
   (define-syntax ~Any/bvs ; matches any tycon
diff --git a/turnstile/examples/exist.rkt b/turnstile/examples/exist.rkt
index 4e88a45..390f2cd 100644
--- a/turnstile/examples/exist.rkt
+++ b/turnstile/examples/exist.rkt
@@ -21,8 +21,7 @@
   --------
   [⊢ e- ⇒ ∃τ.norm])
 
-(define-typed-syntax 
-  (open [x:id (~datum <=) e_packed (~datum with) X:id] e) ≫
+(define-typed-syntax (open [x:id (~datum <=) e_packed (~datum with) X:id] e) ≫
    ;; The subst below appears to be a hack, but it's not really.
    ;; It's the (TaPL) type rule itself that is fast and loose.
    ;; Leveraging the macro system's management of binding reveals this.
diff --git a/turnstile/examples/rosette/bv.rkt b/turnstile/examples/rosette/bv.rkt
index 1825baa..d524fdc 100644
--- a/turnstile/examples/rosette/bv.rkt
+++ b/turnstile/examples/rosette/bv.rkt
@@ -1,7 +1,6 @@
 #lang turnstile
 (extends "rosette2.rkt" ; extends typed rosette
          #:except bv bveq bvslt bvult bvsle bvule bvsgt bvugt bvsge bvuge)
-(require (only-in "../stlc+lit.rkt" define-primop))
 (require (prefix-in ro: rosette)) ; untyped 
 (require (only-in sdsl/bv/lang/bvops bvredand bvredor bv bv*)
          (prefix-in bv: (only-in sdsl/bv/lang/bvops BV)))
diff --git a/turnstile/examples/rosette/lib/synthax.rkt b/turnstile/examples/rosette/lib/synthax.rkt
index bd96c42..8ad425b 100644
--- a/turnstile/examples/rosette/lib/synthax.rkt
+++ b/turnstile/examples/rosette/lib/synthax.rkt
@@ -1,6 +1,6 @@
 #lang turnstile
 (require
- (prefix-in t/ro: (only-in "../rosette2.rkt" Int Bool type C→ CSolution Unit))
+ (prefix-in t/ro: (only-in "../rosette2.rkt" Int Bool C→ CSolution Unit))
  (prefix-in ro: rosette/lib/synthax))
 
 (provide print-forms)
@@ -10,7 +10,7 @@
    #:with ??/progsrc (datum->syntax #'here 'ro:?? #'qq)
    --------
    [⊢ [_ ≫ (??/progsrc) ⇒ : t/ro:Int]]]
-  [(qq pred : ty:t/ro:type) ≫
+  [(qq pred : ty:type) ≫
    #:with ??/progsrc (datum->syntax #'here 'ro:?? #'qq)
    [⊢ [pred ≫ pred- ⇐ : (t/ro:C→ ty.norm t/ro:Bool)]]
    --------
diff --git a/turnstile/examples/rosette/rosette2.rkt b/turnstile/examples/rosette/rosette2.rkt
index 9a9c8da..a1f9783 100644
--- a/turnstile/examples/rosette/rosette2.rkt
+++ b/turnstile/examples/rosette/rosette2.rkt
@@ -38,7 +38,7 @@
     (only-in "../stlc+cons.rkt" Unit [List Listof])))
  (only-in "../stlc+union+case.rkt" [~U* ~CU*] [~case-> ~Ccase->] [~→ ~C→])
  (only-in "../stlc+cons.rkt" [~List ~CListof])
- (only-in "../stlc+reco+var.rkt" [define stlc:define] define-primop)
+ (only-in "../stlc+reco+var.rkt" [define stlc:define])
  (rename-in "rosette-util.rkt" [bitvector? lifted-bitvector?]))
 
 ;; copied from rosette.rkt
diff --git a/turnstile/examples/stlc+lit.rkt b/turnstile/examples/stlc+lit.rkt
index 94a63eb..9c4c0d5 100644
--- a/turnstile/examples/stlc+lit.rkt
+++ b/turnstile/examples/stlc+lit.rkt
@@ -1,6 +1,5 @@
 #lang turnstile/lang
 (extends "stlc.rkt")
-(provide define-primop)
 
 ;; Simply-Typed Lambda Calculus, plus numeric literals and primitives
 ;; Types:
@@ -10,26 +9,9 @@
 ;; - terms from stlc.rkt
 ;; - numeric literals
 ;; - prim +
-;; Typechecking forms:
-;; - define-primop
 
 (define-base-type Int)
 
-;; Using τ.norm leads to a "not valid type" error when file is compiled
-(define-syntax define-primop
-  (syntax-parser #:datum-literals (:)
-    [(define-primop op:id : τ)
-     #:with op/tc (generate-temporary #'op)
-     #`(begin-
-         (provide- #,(syntax/loc this-syntax (rename-out- [op/tc op])))
-         (define-primop op/tc op : τ))]
-    [(define-primop op/tc op : τ:type)
-     #'(begin-
-         ; rename transformer doesnt seem to expand at the right time
-         ; - op still has no type in #%app
-         (define-syntax op/tc
-           (make-variable-like-transformer (assign-type #'op #'τ))))]))
-
 (define-primop + : (→ Int Int Int))
 
 (define-typed-syntax #%datum
diff --git a/turnstile/examples/stlc+tup.rkt b/turnstile/examples/stlc+tup.rkt
index 5b6ac5d..c5aa8a7 100644
--- a/turnstile/examples/stlc+tup.rkt
+++ b/turnstile/examples/stlc+tup.rkt
@@ -1,8 +1,6 @@
 #lang turnstile/lang
 (extends "ext-stlc.rkt")
 
-(require (for-syntax racket/list))
-
 ;; Simply-Typed Lambda Calculus, plus tuples
 ;; Types:
 ;; - types from ext-stlc.rkt
diff --git a/turnstile/examples/stlc.rkt b/turnstile/examples/stlc.rkt
index 6a40b5d..76ebfe6 100644
--- a/turnstile/examples/stlc.rkt
+++ b/turnstile/examples/stlc.rkt
@@ -1,7 +1,5 @@
 #lang turnstile/lang
-(provide only-in (for-syntax current-type=? types=?))
 
-(define-syntax-category type)
 (define-type-constructor → #:arity >= 1
   #:arg-variances (λ (stx)
                     (syntax-parse stx
@@ -23,7 +21,7 @@
 (define-typed-syntax (#%app e_fn e_arg ...) ≫
   [⊢ e_fn ≫ e_fn- ⇒ (~→ τ_in ... τ_out)]
   #:fail-unless (stx-length=? #'[τ_in ...] #'[e_arg ...])
-  (num-args-fail-msg #'e_fn #'[τ_in ...] #'[e_arg ...])
+                (num-args-fail-msg #'e_fn #'[τ_in ...] #'[e_arg ...])
   [⊢ e_arg ≫ e_arg- ⇐ τ_in] ...
   --------
   [⊢ (#%app- e_fn- e_arg- ...) ⇒ τ_out])