pigeonhole (manage)sieve directory permissions

[Peter Gervai]

Hello,

I've tried to find info (apart from looking at the sources) but it
seems this isn't mentioned anywhere.

The setting

plugin {
  sieve = file:~/sievedir;active=~/.sievefilter
}

names the directory where the scripts are stored and the symlink
pointing at one.

Right now the sievedir seems to be created 0700 plus some - probably
inherited - g+s. How could I change mode (to 02770 preferably)?
Also the script files are created 0600 by managesieve which really
would be nice to be 0660 instead.

The main problem is that external programs shall stat() .sievefilter
but they only share groups.

Thanks,
g