1 files changed, 8 insertions, 0 deletions
diff --git a/guix/build/utils.scm b/guix/build/utils.scm
index 5729cdbf04..f365b0db05 100644
--- a/guix/build/utils.scm
+++ b/guix/build/utils.scm
@@ -36,6 +36,8 @@
             set-path-environment-variable
             search-path-as-string->list
             list->search-path-as-string
+            which
+
             alist-cons-before
             alist-cons-after
             alist-replace
@@ -214,6 +216,12 @@ SEPARATOR-separated path accordingly.  Example:
    (format #t "environment variable `~a' set to `~a'~%"
            env-var value)))
 
+(define (which program)
+  "Return the complete file name for PROGRAM as found in $PATH, or #f if
+PROGRAM could not be found."
+  (search-path (search-path-as-string->list (getenv "PATH"))
+               program))
+
 
 ;;;
 ;;; Phases.