Fix HHVM unexpected St13runtime_error with composer

root@debian ~www/fastcgi/hhvm.fastcgi/Base (git)-[master] # php composer.phar create-project –dev –keep-vcs typo3/flow-base-distribution tutorial 2.2.2

Fatal error: unexpected St13runtime_error: locale::facet::_S_create_c_locale name not valid

root@debian ~www/fastcgi/hhvm.fastcgi/Base (git)-[master] # export LC_ALL=C
root@debian ~www/fastcgi/hhvm.fastcgi/Base (git)-[master] # php composer.phar create-project –dev –keep-vcs typo3/flow-base-distribution tutorial 2.2.2