From 84934f40d13ab7ad6f22703acbc5272954e2e0f8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Wed, 5 Nov 2014 18:04:16 +0100
Subject: [PATCH] import: pypi: Gracefully handle wrong argument counts.

* guix/scripts/import/pypi.scm (guix-import-pypi): Use 'leave' to handle
  cases where ARGS has zero or two or more elements.
---
 guix/scripts/import/pypi.scm | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/guix/scripts/import/pypi.scm b/guix/scripts/import/pypi.scm
index a36065e5cf..1e03843840 100644
--- a/guix/scripts/import/pypi.scm
+++ b/guix/scripts/import/pypi.scm
@@ -84,4 +84,8 @@ Import and convert the PyPI package for PACKAGE-NAME.\n"))
          (unless sexp
            (leave (_ "failed to download meta-data for package '~a'~%")
                   package-name))
-         sexp)))))
+         sexp))
+      (()
+       (leave (_ "too few arguments~%")))
+      ((many ...)
+       (leave (_ "too many arguments~%"))))))