Added dependency to package git.

main.rkt

@@ -4,7 +4,9 @@
          (only-in racket/base [#%module-begin racket-module-begin])
          (for-syntax racket/base)
          "private/commands.rkt"
-         "private/engine.rkt")
+         "private/engine.rkt"
+         git
+         )
 
 (provide (all-from-out racket)
          (rename-out [makefile-module-begin #%module-begin])
@@ -23,7 +25,8 @@
          list-dirs
          $target
          $deps
-         $<)
+         $<
+         (all-from-out git))
 
 ;; For target declarations we want a bound identifier to remain an ordinary
 ;; Racket expression. This makes generated targets such as (target obj ...)