anchor.diff:              pkgs.setuptools
               pkgs.pythonPackages.genshi
               pkgs.pythonPackages.psycopg2
  +            pkgs.python.modules.sqlite3
               subversion
             ];
       };
  
positive.code:       PythonOption TracUriRoot ${config.projectsLocation}
        PythonOption PYTHON_EGG_CACHE /var/trac/egg-cache
      </Location>
    '';
    
    globalEnvVars = singleton
  
negative.code:       default = "wwwrun";
        description = "Group under which Trac runs.";
      };
  
      ldapAuthentication = {
        enable = mkOption {
          default = false;
          description = "Enable the ldap authentication in trac";
        };
  
        url = mkOption {
          default = "ldap://127.0.0.1/dc=example,dc=co,dc=ke?uid?sub?(objectClass=inetOrgPerson)";
          description = "URL of the LDAP authentication";
        };
  
        name = mkOption {
          default = "Trac server";
          description = "AuthName";
        };
      };
      
    };
  
  