anchor.diff:  
     postPatch = ''
       sed \
  -      -e 's,4.0.0,5.0.0,g' \
  -      -e 's,0.3.0,${pynacl.version},g' \
  +      -e '/\(pynacl\|pysaml2\)/ s/\(,\|\)\(>\|<\|=\)\(=\|\)[0-9.]\+//g' \
         -i synapse/python_dependencies.py
     '';
   
  
positive.code: , jinja2
  , ldap3
  , matrix-angular-sdk
  , netaddr
  , pillow
  , psutil
  
negative.code:     jinja2
      ldap3
      matrix-angular-sdk
      msgpack-python
      netaddr
      pillow
      psutil
  