Use racket instead of scheme. Fixes dependency issues.

pkgs/racket-test-core/tests/racket/lang/reader.rkt

@@ -1,16 +1,16 @@
-#lang scheme/base
+#lang racket/base
 
 (require syntax/module-reader)
 (provide (rename-out [my-read read]
                      [my-read-syntax read-syntax]))
 
 (define (my-read port modpath line col pos)
-  (wrap-read-all 'scheme port read modpath (object-name port) line col pos))
+  (wrap-read-all 'racket port read modpath (object-name port) line col pos))
 
 (define (my-read-syntax src port modpath line col pos)
   (syntax-property
    (datum->syntax #f
-                  (wrap-read-all 'scheme port (lambda (in) (read-syntax src in)) modpath src line col pos)
+                  (wrap-read-all 'racket port (lambda (in) (read-syntax src in)) modpath src line col pos)
                   #f)
    'module-language
    '#(tests/racket/lang/getinfo get-info closure-data)))

pkgs/racket-test/info.rkt

@@ -32,6 +32,8 @@
                      "base"
                      "data-lib"))
 
+(define implies '("racket-test-core"))
+
 (define pkg-desc "Base Racket test suites")
 
 (define pkg-authors '(eli jay matthias mflatt robby ryanc samth))