software/nayous: Use buildout.hash.cfg

instance.cfg md5sum has been omitted.

software/nayuos/buildout.hash.cfg

+# THIS IS NOT A BUILDOUT FILE, despite purposedly using a compatible syntax.
+# The only allowed lines here are (regexes):
+# - "^#" comments, copied verbatim
+# - "^[" section beginings, copied verbatim
+# - lines containing an "=" sign which must fit in the following categorie.
+#   - "^\s*filename\s*=\s*path\s*$" where "path" is relative to this file
+#     Copied verbatim.
+#   - "^\s*hashtype\s*=.*" where "hashtype" is one of the values supported
+#     by the re-generation script.
+#     Re-generated.
+# - other lines are copied verbatim
+# Substitution (${...:...}), extension ([buildout] extends = ...) and
+# section inheritance (< = ...) are NOT supported (but you should really
+# not need these here).
+[template-instance]
+filename = instance.cfg
+md5sum = 7e9deae78923ab7805c0d10d0d6fe336

software/nayuos/software.cfg

 [buildout]
 extends =
+  buildout.hash.cfg
 # basic needs
   ../../stack/slapos.cfg
   ../../component/automake/buildout.cfg
@@ -23,10 +24,9 @@ slapos.recipe.template = 4.3
 [template-instance]
 # jinja2 render instance.cfg file in the buildout directory
 recipe = slapos.recipe.template:jinja2
-template = ${:_profile_base_location_}/instance.cfg
-rendered = ${buildout:directory}/instance.cfg
+template = ${:_profile_base_location_}/${:filename}
+rendered = ${buildout:directory}/${:filename}
 mode = 0644
-md5sum = 7e9deae78923ab7805c0d10d0d6fe336
 context =
   key software_dir            :_profile_base_location_
   key instance_dir            buildout:directory