anchor.diff:        ++ optional snmpSupport "--with-net-snmp"
         ++ optional sshSupport "--with-ssh2=${libssh2.dev}"
         ++ optional mysqlSupport "--with-mysql"
  -      ++ optional postgresqlSupport "--with-postgresql";
  +      ++ optional postgresqlSupport "--with-postgresql"
  +      ++ optional ipmiSupport "--with-openipmi=${openipmi.dev}";
   
         prePatch = ''
           find database -name data.sql -exec sed -i 's|/usr/bin/||g' {} +
  
positive.code:       ++ optional snmpSupport net-snmp
        ++ optional sshSupport libssh2
        ++ optional mysqlSupport libmysqlclient
        ++ optional postgresqlSupport postgresql;
  
        configureFlags = [
          "--enable-server"
  
negative.code: , sshSupport ? true, libssh2
  , mysqlSupport ? false, libmysqlclient
  , postgresqlSupport ? false, postgresql
  , ipmiSupport ? false, openipmi
  }:
  
  # ensure exactly one primary database type is selected
  