GNU bug report logs - #27180
[PATCH core-updates] utils: Add helper method to invoke programs.

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Danny Milosavljevic <dannym <at> scratchpost.org>
Subject: bug#27180: closed (Re: bug#27180: [PATCH core-updates] utils: Add
 helper method to invoke programs.)
Date: Thu, 01 Jun 2017 17:10:02 +0000

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Your bug report

#27180: [PATCH core-updates] utils: Add helper method to invoke programs.

which was filed against the guix-patches package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 27180 <at> debbugs.gnu.org.

-- 
27180: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=27180
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Danny Milosavljevic <dannym <at> scratchpost.org>
To: ludo <at> gnu.org (Ludovic Courtès)
Cc: 27180-done <at> debbugs.gnu.org
Subject: Re: bug#27180: [PATCH core-updates] utils: Add helper method to
 invoke programs.
Date: Thu, 1 Jun 2017 19:09:00 +0200

Good idea to end it with #t :)

Pushed your variant as 3f65c190d23296e7e718c3deff413e8beb61d8ba to core-updates.

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From: Danny Milosavljevic <dannym <at> scratchpost.org>
To: guix-patches <at> gnu.org
Cc: Danny Milosavljevic <dannym <at> scratchpost.org>
Subject: [PATCH core-updates] utils: Add helper method to invoke programs.
Date: Thu,  1 Jun 2017 09:22:07 +0200

* guix/build/utils.scm (invoke): New variable.
---
 guix/build/utils.scm | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/guix/build/utils.scm b/guix/build/utils.scm
index 6d3c29d00..b2307d9d6 100644
--- a/guix/build/utils.scm
+++ b/guix/build/utils.scm
@@ -84,6 +84,7 @@
             fold-port-matches
             remove-store-references
             wrap-program
+            invoke
 
             locale-category->string))
 
@@ -1058,6 +1059,13 @@ with definitions for VARS."
         (chmod prog-tmp #o755)
         (rename-file prog-tmp prog))))
 
+(define invoke
+  "Invokes the program (array-ref ARGS 0) and gives it ARGS.
+   If the exit code is non-zero, raises an error."
+  (lambda args
+    (if (not (zero? (system* args)))
+      (error (format #f "Failed to invoke ~a" args)))))
+
 
 ;;;
 ;;; Locales.

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