WIP: Minimize diff.

software/erp5/software.cfg

 [buildout]
 extends =
-  ../../stack/erp5/buildout-py3.cfg
+  ../../stack/erp5/buildout.cfg

stack/erp5/buildout.cfg

@@ -87,8 +87,6 @@ parts +=
 # jupyter
 #  jupyter-notebook-initialized-scripts
 
-allow-picked-versions = true
-
 # override instance-jupyter-notebook not to render into default template.cfg
 [instance-jupyter-notebook]
 rendered = ${buildout:directory}/template-jupyter.cfg
@@ -265,7 +263,7 @@ link-binary =
   ${poppler:location}/bin/pdftotext
   ${python2.7:location}/bin/2to3
   ${sed:location}/bin/sed
-#  ${tesseract:location}/bin/tesseract
+  ${tesseract:location}/bin/tesseract
   ${w3m:location}/bin/w3m
 fonts =
   ${liberation-fonts:location}