Reload hgrc before notify hook call ?

[Yannick CHARLES]

Hello to everybody,

I have the following hgrc in a versionned patch queue, on a remote 
server where I can push over http:
------
#
# [web] section goes here
#

[hooks]
changegroup.00updatefiles = hg update
changegroup.01autobuild_patch = bash ../patch_chgrouphook.sh Yann

# Include notify parameters
%include /var/hg/repos/test-syst/.hg/notifypatches.rc

[hooks]
# Here for testing purposes
changegroup.02upcf = hg showconfig

# Include notify hook
%include /var/hg/repos/test-syst/.hg/notifyphook.rc
------

/var/hg/repos/test-syst/.hg/notifyphook.rc normally contains the 
following lines:
------
[hooks]
changegroup.03notify = python:hgext.notify.hook
------

Hook 01 rebuilds the project's output files, but also modify notify's 
template. This modification is reflected by hook 02 where I see the new 
template.
However, in hook 03, notify still uses the old template.

I guess this is because though hooks are run in order, hgrc is only 
parsed once when I push on the repo (and parsed again to run 
showconfig), so notify is passed the values present in hgrc at the 
beginning of the changegroup event.
Is my interpretation correct?

My second problem is that in some cases, I wouldn't like notify to send 
e-mails (e.g. the patch queue is empty). To achieve this I tried in the 
same way to have the bash script called by the 01 hook to modify 
notifyphook.rc into an empty file, but I have the same problem (i.e. the 
file used is the previous one).


So starting from this, I have three questions:
-Is there a way to somehow reload hgrc before calling the notify hook, 
or to call it with the updated parameters (if so, it could fix the 2nd 
pb as well, as I would set notify.test to true)?
-Would it be possible to call the python notify hook directly from the 
bash script from hook 01?
-Is it possible to run a hook only under certain conditions?

Or maybe I'm looking at the wrong direction, and it would be better to 
rewrite a mail-sending procedure from scratch in the form of a bash 
script for example?


Best regards,
Yannick CHARLES