From ad25c8d688aba5444b188343901fa253600739a2 Mon Sep 17 00:00:00 2001
From: Samuel Gaist <samuel.gaist@idiap.ch>
Date: Tue, 13 Mar 2018 11:17:47 +0100
Subject: [PATCH] [setup] Relax matplotlib requirement

It's only used in one utility function therefore the import
has been moved within the function and the requirement moved to
run_constrained.

Fixes #31
---
 bob/io/image/utils.py     | 2 +-
 conda/meta.yaml           | 4 +++-
 doc/extra-intersphinx.txt | 1 +
 requirements.txt          | 1 -
 test-requirements.txt     | 1 +
 5 files changed, 6 insertions(+), 3 deletions(-)
 create mode 100644 doc/extra-intersphinx.txt
 create mode 100644 test-requirements.txt

diff --git a/bob/io/image/utils.py b/bob/io/image/utils.py
index 0865850..3f0986d 100644
--- a/bob/io/image/utils.py
+++ b/bob/io/image/utils.py
@@ -1,5 +1,4 @@
 import numpy as np
-import matplotlib.pyplot as plt
 
 
 def to_matplotlib(img):
@@ -64,6 +63,7 @@ def imshow(img, cmap=None, **kwargs):
     object
         Returns whatever ``plt.imshow`` returns.
     '''
+    import matplotlib.pyplot as plt
 
     if cmap is None and img.ndim == 2:
         cmap = 'gray'
diff --git a/conda/meta.yaml b/conda/meta.yaml
index a3cf626..57103dd 100644
--- a/conda/meta.yaml
+++ b/conda/meta.yaml
@@ -40,9 +40,10 @@ requirements:
   run:
     - python
     - setuptools
-    - matplotlib
     - boost
     - {{ pin_compatible('numpy') }}
+  run_constrained:
+    - matplotlib
 
 test:
   imports:
@@ -59,6 +60,7 @@ test:
     - coverage
     - sphinx
     - sphinx_rtd_theme
+    - matplotlib
 
 about:
   home: https://www.idiap.ch/software/bob/
diff --git a/doc/extra-intersphinx.txt b/doc/extra-intersphinx.txt
new file mode 100644
index 0000000..6ccafc3
--- /dev/null
+++ b/doc/extra-intersphinx.txt
@@ -0,0 +1 @@
+matplotlib
diff --git a/requirements.txt b/requirements.txt
index 8c00d21..6256c75 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,4 +4,3 @@ bob.extension
 bob.blitz
 bob.core
 bob.io.base
-matplotlib
diff --git a/test-requirements.txt b/test-requirements.txt
new file mode 100644
index 0000000..6ccafc3
--- /dev/null
+++ b/test-requirements.txt
@@ -0,0 +1 @@
+matplotlib
-- 
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