$NetBSD: patch-doc_Makefile.local,v 1.3 2015/08/26 13:33:36 wiz Exp $

Use proper python binary.

--- doc/Makefile.local.orig	2015-06-27 13:05:31.000000000 +0000
+++ doc/Makefile.local
@@ -7,7 +7,7 @@ SPHINXOPTS    := -q
 SPHINXBUILD   = sphinx-build
 DOCBUILDDIR      := $(dir)/_build
 
-mkdocdeps := python $(srcdir)/$(dir)/mkdocdeps.py
+mkdocdeps := ${PYTHONBIN} $(srcdir)/$(dir)/mkdocdeps.py
 
 # Internal variables.
 ALLSPHINXOPTS   := -d $(DOCBUILDDIR)/doctrees $(SPHINXOPTS) $(srcdir)/$(dir)