run php-fpm under a linux user
pool.conf file:
[@@USER@@]
listen = /var/run/@@USER@@_fpm.sock (tcp instead of .sock, for every site another tcp port is also possible)
listen.owner = @@USER@@ listen.group = @@USER@@ listen.mode = 0660 user = @@USER@@ group = @@USER@@
set file perms and create required dirs!
mkdir -p /home/$HOME_DIR$PUBLIC_HTML_DIR mkdir /home/$HOME_DIR/_logs mkdir /home/$HOME_DIR/_sessions chmod 750 /home/$HOME_DIR -R chmod 700 /home/$HOME_DIR/_sessions chmod 770 /home/$HOME_DIR/_logs chmod 750 /home/$HOME_DIR$PUBLIC_HTML_DIR chown $USERNAME:$USERNAME /home/$HOME_DIR/ -R
HHVM:
sudo cp /etc/init.d/hhvm /etc/init.d/hhvm_domain sudo cp /etc/default/hhvm /etc/default/hhvm_domain sudo cp /etc/hhvm/server_www_canus_at.ini /etc/hhvm/server_www_domain.ini
sudo vi /etc/init.d/hhvm_www_domain: … NAME=hhvm_www_domain … PIDFILE=/var/run/hhvm/pid_$NAME
/etc/default/hhvm_www_domain file:
This is a configuration file for /etc/init.d/hhvm.
Overwrite start up configuration of the hhvm service.
This file is sourced by /bin/sh from /etc/init.d/hhvm.
Configuration file location.
Default: “/etc/hhvm/server.ini”
Examples:
“/etc/hhvm/conf.d/fastcgi.ini” Load configuration file from Debian/Ubuntu conf.d style location
CONFIG_FILE="/etc/hhvm/server_www_domain.ini"
User to run the service as.
Default: “www-data”
Examples:
“hhvm” Custom ‘hhvm’ user
RUN_AS_USER="@@USER@@" RUN_AS_GROUP="@@USER@@"
Add additional arguments to the hhvm service start up that you can’t put in CONFIG_FILE for some reason.
Default: “”
Examples:
“-vLog.Level=Debug” Enable debug log level
“-vServer.DefaultDocument=app.php” Change the default document
#ADDITIONAL_ARGS=""
PID file location.
Default: “/var/run/hhvm/pid”
#PIDFILE="/var/run/hhvm/pid"
/etc/hhvm/server_www_domain.ini: ; php options pid = /var/run/hhvm/pid_www_domain ; hhvm specific hhvm.server.port = 9001 hhvm.server.type = fastcgi hhvm.server.default_document = index.php hhvm.log.use_log_file = true hhvm.log.file = /var/log/hhvm/error_www_domain.log hhvm.repo.central.path = /var/run/hhvm/hhvm.hhbc
sudo update-rc.d hhvm_www_domain defaults sudo service hhvm_www_domain start sudo service nginx reload
This should do the trick to use hhvm and php-fpm under a normal linux user with easyengine setup vhosts 
Rahul could you add this to easyengine, i have read that someone wrote a command line example like: ee site create user domain.tld. That would be nice