| 325 |  | * Your config specifies the extension defaultclass (= the !EasyBlock) using {{{exts_defaultclass = 'someEasyBlock'}}} | 
                        | 326 |  | * and the extension filter (= command to test whether installation of the extension succeeded) using {{{exts_filter = ("someCommand", "")}}} | 
                        | 327 |  | * and when you've added the path where the additional modules/packages will be installed to the language specific environment variable that is used to search for extras - {{{PERL5LIB}}} for Perl, {{{PYTHONPATH}}} for Python, {{{R_LIBS}}} for R, etc. | 
                      
                        |  | 325 | * your !EasyConfig specifies | 
                        |  | 326 | * the extension defaultclass (= the !EasyBlock) using | 
                        |  | 327 | {{{ | 
                        |  | 328 | exts_defaultclass = 'someEasyBlock' | 
                        |  | 329 | }}} | 
                        |  | 330 | * and the extension filter (= command to test whether installation of the extension succeeded) using | 
                        |  | 331 | {{{ | 
                        |  | 332 | exts_filter = ("someCommand", "") | 
                        |  | 333 | }}} | 
                        |  | 334 | * and adds the path where the additional modules/packages will be installed to the language specific environment variable that is used to search for extras - {{{PERL5LIB}}} for Perl, {{{PYTHONPATH}}} for Python, {{{R_LIBS}}} for R, etc. using | 
                        |  | 335 | {{{ | 
                        |  | 336 | modextrapaths = {'ENVVAR': ['path', 'another/path']} | 
                        |  | 337 | }}} |