erp5: make 'list +=' usable when extending [local-bt5-repository]

software/wendelin/software.cfg

@@ -60,8 +60,7 @@ initialization =
 repository_id_list += wendelin
 
 [local-bt5-repository]
-# we need to override it
-list = ${erp5:location}/bt5 ${erp5:location}/product/ERP5/bootstrap ${wendelin:location}/bt5/
+list += ${wendelin:location}/bt5
 
 # Jupyter is by default enabled in Wendelin
 [erp5-defaults]

stack/erp5/buildout.cfg

@@ -384,7 +384,7 @@ recipe = plone.recipe.command
 stop-on-error = true
 genbt5list = ${erp5:location}/product/ERP5/bin/genbt5list
 command =
-  ${buildout:executable} ${:genbt5list} ${local-bt5-repository:list}
+  echo '${local-bt5-repository:list}' |xargs ${buildout:executable} ${:genbt5list}
 update-command = ${:command}
 
 [erp5_repository_list]

stack/erp5/buildout.hash.cfg

@@ -79,7 +79,7 @@ md5sum = 0969fbb25b05c02ef3c2d437b2f4e1a0
 
 [template]
 filename = instance.cfg.in
-md5sum = cbe1df5dbd9b79ed7adc027fd183e186
+md5sum = 7b4ebfd2ef31ed57a7129020c8ccde67
 
 [monitor-template-dummy]
 filename = dummy.cfg

stack/erp5/instance.cfg.in

@@ -73,7 +73,7 @@ extra-context =
 
 [dynamic-template-erp5-parameters]
 jupyter-enable-default = {{ jupyter_enable_default }}
-local-bt5-repository = {{ local_bt5_repository }}
+local-bt5-repository = {{ ' '.join(local_bt5_repository.split()) }}
 template-monitor = {{ dumps(template_monitor) }}
 
 [dynamic-template-erp5]