Removed rash integration again and backported raco call.

private/commands.rkt

@@ -75,25 +75,19 @@
          (and (file-exists? path) path))))
 
 (define (find-raco-executable)
-  ;; Prefer the console executable directory reported by the current Racket
-  ;; installation. This does not depend on PATH and therefore also works for
-  ;; typical Windows installations under Program Files.
   (define console-bin
-    (with-handlers ([exn:fail? (lambda (_) #f)])
+    (with-handlers ([exn:fail? (λ (_) #f)])
       (find-console-bin-dir)))
   (define from-console-bin
     (existing-raco-in console-bin))
 
-  ;; A useful fallback for portable/non-standard installations: raco normally
-  ;; lives alongside the currently running racket executable.
   (define exec-file
-    (with-handlers ([exn:fail? (lambda (_) #f)])
+    (with-handlers ([exn:fail? (λ (_) #f)])
       (find-system-path 'exec-file)))
   (define from-exec-dir
     (and exec-file
          (existing-raco-in (path-only exec-file))))
 
-  ;; PATH is intentionally last; it might refer to a different Racket install.
   (or from-console-bin
       from-exec-dir
       (find-executable-path (raco-executable-name))
@@ -103,7 +97,7 @@
   (unless (list? command)
     (raise-argument-error 'raco "list?" command))
   (define arguments
-    (append-map (lambda (item) (command-item->strings 'raco item)) command))
+    (append-map (λ (item) (command-item->strings 'raco item)) command))
   (when (null? arguments)
     (error 'raco "empty command"))
   (define executable (find-raco-executable))