[PATCH] gnu: python-matplotlib: Don't propagate python-numpy-bootstrap.

[Thomas Danckaert <post@thomasdanckaert.be>]

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Hi,

when a profile contains both python-numpy and python-matplotlib
(either installed directly or by propagation, e.g. when from
python-ipython), a lot of warnings about conflicts between
python-numpy and python-nympy-bootstrap appear, because matplotlib
propagates its python-numpy-bootstrap dependency.

This patch works around it by creating an intermediate
python-matplotlib-bootstrap package as well, which is then used as a
native input to generate the documentation of python-numpy.
python-numpy is then used as a propagated input of python-matplotlib,
so python-numpy-bootstrap doesn't appear in user's profiles anymore.

What do you think?

Thomas

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From 56a9c4d0f86308fe7bdec1345998c0142c444a4b Mon Sep 17 00:00:00 2001
From: Thomas Danckaert <thomas.danckaert@gmail.com>
Date: Fri, 27 Jan 2017 12:12:42 +0100
Subject: [PATCH] gnu: python-matplotlib: Don't propagate
 python-numpy-bootstrap.

* gnu/packages/python.scm (python-matplotlib-bootstrap,python2-matplotlib-bootstrap):
  New variables.
  (python-matplotlib, python2-matplotlib) [propagated-inputs]: Use
  python-numpy instead of python-numpy-bootstrap.
  (python-numpy, python2-numpy) [propagated-inputs,native-inputs]: Replace
  matplotlib by native inputs matplotlib-bootstrap.
---
 gnu/packages/python.scm | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/gnu/packages/python.scm b/gnu/packages/python.scm
index 1a56008a6..73a940548 100644
--- a/gnu/packages/python.scm
+++ b/gnu/packages/python.scm
@@ -3404,11 +3404,11 @@ association studies (GWAS) on extremely large data sets.")
      `(("which" ,which)
        ,@(package-inputs python-numpy-bootstrap)))
     (propagated-inputs
-     `(("python-matplotlib" ,python-matplotlib)
-       ("python-pyparsing" ,python-pyparsing)
+     `(("python-pyparsing" ,python-pyparsing)
        ,@(package-propagated-inputs python-numpy-bootstrap)))
     (native-inputs
      `(("pkg-config" ,pkg-config)
+       ("python-matplotlib" ,python-matplotlib-bootstrap) ; to build documentation
        ("python-sphinx" ,python-sphinx)
        ("python-numpydoc" ,python-numpydoc)
        ("texlive" ,texlive)
@@ -3458,7 +3458,11 @@ association studies (GWAS) on extremely large data sets.")
               ,phases)))))))
 
 (define-public python2-numpy
-  (package-with-python2 python-numpy))
+  (let ((numpy (package-with-python2 python-numpy)))
+    (package (inherit numpy)
+             (native-inputs
+              `(("python-matplotlib" ,python2-matplotlib-bootstrap)
+                ,@(alist-delete "python-matplotlib" (package-native-inputs numpy)))))))
 
 (define-public python-pygit2
   (package
@@ -3623,7 +3627,7 @@ transcendental functions).")
        ("gobject-introspection" ,gobject-introspection)
        ("python-tkinter" ,python "tk")
        ("python-dateutil" ,python-dateutil-2)
-       ("python-numpy" ,python-numpy-bootstrap)
+       ("python-numpy" ,python-numpy)
        ("python-pillow" ,python-pillow)
        ("python-pytz" ,python-pytz)
        ("python-six" ,python-six)
@@ -3740,8 +3744,15 @@ toolkits.")
        `(("python2-pycairo" ,python2-pycairo)
          ("python2-pygobject-2" ,python2-pygobject-2)
          ("python2-tkinter" ,python-2 "tk")
+         ("python2-numpy" ,python2-numpy)
          ,@(fold alist-delete (package-propagated-inputs matplotlib)
-                 '("python-pycairo" "python-pygobject" "python-tkinter")))))))
+                 '("python-pycairo" "python-pygobject" "python-tkinter" "python-numpy")))))))
+
+(define python-matplotlib-bootstrap
+  ((package-input-rewriting `((,python-numpy . ,python-numpy-bootstrap))) python-matplotlib))
+
+(define python2-matplotlib-bootstrap
+  ((package-input-rewriting `((,python2-numpy . ,python2-numpy-bootstrap))) python2-matplotlib))
 
 (define-public python2-pysnptools
   (package
-- 
2.11.0