/etc/apache2/sites-available/svn.prohaxx.sk:

<Virtualhost *>
        ServerAdmin lucox@prohaxx.sk
        ServerName svn.prohaxx.sk
        ErrorLog /var/svn/logs/error.log
        CustomLog /var/svn/logs/access.log common
</Virtualhost>

<Location /weby>
  <LimitExcept GET PROPFIND OPTIONS REPORT>
        Require group web_developers
  </LimitExcept>
  <Limit GET PROPFIND OPTIONS REPORT>
        Require group web_developers
        Require group svn_commiters
        Require group svn_readers
  </Limit>
  Require valid-user
</Location>

/etc/apache2/mods-enabled/dav_svn.conf:

<Location />
  DAV svn

  SVNParentPath /var/svn
  SVNListParentPath on

  AuthType Basic
  AuthName "Subversion Repository"
  AuthUserFile /etc/subversion/users
  AuthGroupFile /etc/subversion/groups

  Require valid-user
</Location>