[bug#29755] [PATCH] Fix gourmet

[bug#29755] [PATCH] Fix gourmet

[Mark Meyer]

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Hi Guix!
This patch introduces a custom install phase for the gourmet variable,
because the combination of --root=/ and --prefix=/gnu/store/... will
lead to the generated paths in settings.py ending up with no preceding
slash. This means that the base dir in setting py is set to
'gnu/store/...gourmet...' instead of '/gnu/store/...gourmet...'.

This also adds another input to enable a plugin.

This is in response to guix #29227 and should fix the crash that is
observed.

Cheers, Mark

-- 
  Mark Meyer
  mark@ofosos.org

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From 3ffb47334201539e66eaf9cba6bd54ed2330e9ee Mon Sep 17 00:00:00 2001
From: Mark Meyer <mark@ofosos.org>
Date: Sun, 17 Dec 2017 14:08:17 +0100
Subject: [PATCH] gnu: gourmet: Fix runtime failure and enhance plugin.

* gnu/packages/nutrition.scm (gourmet)[inputs]: Add python-lxml.
[arguments]: Custom install phase.
---
 gnu/packages/nutrition.scm | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/gnu/packages/nutrition.scm b/gnu/packages/nutrition.scm
index 90019f848..0e03253cf 100644
--- a/gnu/packages/nutrition.scm
+++ b/gnu/packages/nutrition.scm
@@ -52,11 +52,18 @@
     (inputs
      `(("pygtk"             ,python2-pygtk)
        ("sqlalchemy"        ,python2-sqlalchemy)
+       ("python-lxml"       ,python2-lxml)
        ("python-pillow"     ,python2-pillow)
        ("elib.intl"         ,python2-elib.intl)))
     (arguments
      `(#:python ,python-2               ;exception and print syntax
-       #:tests? #f))                    ;tests look bitrotted
+       #:tests? #f                      ;tests look bitrotted
+       #:phases
+       (modify-phases %standard-phases
+         (replace 'install
+           (lambda* (#:key make-flags #:allow-other-keys)
+             (zero? (system* "python" "setup.py" "install" "--prefix"
+                             (assoc-ref %outputs "out"))))))))
     (home-page "http://thinkle.github.io/gourmet/")
     (synopsis "Recipe organizer")
     (description
-- 
2.15.1