Custom composer command failing when executing 'which' on remote

[davidrojo]

Hello, I am trying to configure the deploy process, but I can't continue as composer command is failing.

I have a cPanel server, with several php versions. The composer command uses php5.6 as it is the default version, so if I want to execute composer with php7.2 I have to execute composer with the following command:

$ php -ea_php 72 /opt/cpanel/composer/bin/composer

Using this, composer will not show any error regarding php version being lower than 7 as it is being executed with the php7.2 version.

The problem is that if I configure this command with remoteComposerBinaryPath the deploy process fails, as it tries to execut the which command:

return $this->getConfigBuilder()
            ->remoteComposerBinaryPath('php -ea_php 72 /opt/cpanel/composer/bin/composer');

In Process.php line 223:
                                                                                                                     
  The command "ssh ****@*****  'which php -ea_php 72 /opt/cpanel/composer/bin/composer'" failed.  
                                                                                                                     
  Exit Code: 1(General error)                                                                                        
                                                                                                                     
  Working directory: /app                                                                                            
                                                                                                                     
  Output:                                                                                                            
  ================                                                                                                   
  /usr/local/bin/php                                                                                                 
  /usr/bin/php                                                                                                       
  /opt/cpanel/composer/bin/composer                                                                                  
                                                                                                                     
                                                                                                                     
  Error Output:                                                                                                      
  ================                                                                                                   
  which: invalid option -- 'e'                                                                                       
  which: invalid option -- '_'                                                                                       
  which: invalid option -- 'p'                                                                                       
  which: invalid option -- 'h'                                                                                       
  which: invalid option -- 'p'                                                                                       
  which: no 72 in (/usr/local/cpanel/3rdparty/lib/path-bin:/usr/local/bin:/usr/bin:/opt/cpanel/composer/bin)