I have installed a roll-your-own hub, and am going to install my first tool. I am a joomla super administrator and a member of the group apps. I checked

/etc/sudoers and it does contain the required line,

%apps ALL=NOPASSWD:/bin/su – apps

However, when I click Add Repo, I get the error message

svnadmin repository creation failed svnadmin: Could not create top-level directory svnadmin: can’t create ‘lammps’: Permission denied

How do I set permissions to allow creating of tool repositories? Any hints would be great!