11/36: gnu: haskell-mode: Use INVOKE.

[Tobias Geerinckx-Rice]

nckx pushed a commit to branch master
in repository guix.

commit ff6275fd261ab54b70058abee62a4d2f93c22396
Author: Tobias Geerinckx-Rice <address@hidden>
Date:   Wed Jun 20 02:38:49 2018 +0200

    gnu: haskell-mode: Use INVOKE.
    
    * gnu/packages/emacs.scm (haskell-mode)[arguments]: Substitute INVOKE
    for SYSTEM*.
---
 gnu/packages/emacs.scm | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/gnu/packages/emacs.scm b/gnu/packages/emacs.scm
index b413658..cf6ee9e 100644
--- a/gnu/packages/emacs.scm
+++ b/gnu/packages/emacs.scm
@@ -702,8 +702,7 @@ only a handful of functions that are not 
resource-specific.")
                           files))
 
               (with-directory-excursion "doc"
-                (unless (zero? (system* "makeinfo" "haskell-mode.texi"))
-                  (error "makeinfo failed"))
+                (invoke "makeinfo" "haskell-mode.texi")
                 (install-file "haskell-mode.info" info))
                (copy-to-dir doc '("CONTRIBUTING.md" "NEWS" "README.md"))
                (copy-to-dir el-dir (find-files "." "\\.elc?"))