blt doctor only returns error output

[bobbygryzynger]

My system information:

• Operating system type: macOS
• Operating system version: 10.12.5
• BLT version: 8.9.x

When I run this command:

blt doctor

I get the following output:

$ blt doctor
Drupal VM was detected. Running blt doctor inside of VM...
Executing command cd /var/www/{{ vagrant_machine_name }} && /var/www/{{ vagrant_machine_name }}/vendor/bin/drush cc drush && /var/www/{{ vagrant_machine_name }}/vendor/bin/drush --include=/var/www/{{ vagrant_machine_name }}/vendor/acquia/blt/drush blt-doctor -r /var/www/{{ vagrant_machine_name }}/docroot inside of Drupal VM...
[warning] The vagrant-exec plugin is not installed! Attempting to install it...
[Exec] Running vagrant plugin install vagrant-exec
Installing the 'vagrant-exec' plugin. This can take a few minutes...
Installed the plugin 'vagrant-exec (0.5.2)'!
[Exec] Done in 10.067s
bash: line 0: cd: /var/www/{{: No such file or directory
Attempting to run doctor on host machine...
[Acquia\Blt\Robo\Tasks\DrushTask]  The drush command 'blt-doctor' could not be found.  Run `drush           [error]
cache-clear drush` to clear the commandfile cache if you have
installed new extensions. 
[Acquia\Blt\Robo\Tasks\DrushTask]  Exit code 1 
[warning] Unable to run the doctor using alias '@<site>.local'. Trying with '@self'...
[warning] Unable to run the doctor using alias '@self'. Trying without alias...
[error]   

And I expected that the command would run successfully after running drush cc drush and verifying the local site is reachable:

$ drush @<site>.local status
 Drupal version                  :  8.3.2                                                                                                                                              
 Site URI                        :  http://<site>.local                                                                                                                               
 Database driver                 :  mysql                                                                                                                                              
 Database hostname               :  localhost                                                                                                                                          
 Database port                   :  3306                                                                                                                                               
 Database username               :  admin                                                                                                                                              
 Database name                   :  <site>                                                                                                                                            
 Database                        :  Connected                                                                                                                                          
 Drupal bootstrap                :  Successful                                                                                                                                         
 Drupal user                     :                                                                                                                                                     
 Default theme                   :  bartik                                                                                                                                             
 Administration theme            :  seven                                                                                                                                              
 PHP executable                  :  /usr/bin/php                                                                                                                                       
 PHP configuration               :  /etc/php/5.6/cli/php.ini                                                                                                                           
 PHP OS                          :  Linux                                                                                                                                              
 Drush script                    :  /var/www/<site>/vendor/drush/drush/drush.php                                                                                                      
 Drush version                   :  8.1.10                                                                                                                                             
 Drush temp directory            :  /tmp                                                                                                                                               
 Drush configuration             :  /var/www/<site>/drush/drushrc.php                                                                                                                 
 Drush alias files               :  /var/www/<site>/docroot/../drush/site-aliases/aliases.drushrc.php /var/www/<site>/docroot/../drush/site-aliases/example.acsf.aliases.drushrc.php 
                                    /var/www/<site>/docroot/../drush/site-aliases/example.local.aliases.drushrc.php                                                                   
 Install profile                 :  standard                                                                                                                                           
 Drupal root                     :  /var/www/<site>/docroot                                                                                                                           
 Drupal Settings File            :  sites/default/settings.php                                                                                                                         
 Site path                       :  sites/default                                                                                                                                      
 File directory path             :  sites/default/files                                                                                                                                
 Private file directory path     :  /var/www/<site>/files-private                                                                                                                     
 Temporary file directory path   :  /tmp                                                                                                                                               
 Sync config path                :  /var/www/<site>/config/default                                                                                                                    

[grasmash]

How much of that output is manually redacted? Is Executing command cd /var/www/{{ vagrant_machine_name }} the literal string that's being outputted?

I ask because it looks like {{ vagrant_machine_name }} is not being replaced with real value, which would cause BLT to fail. BLT isn't able to parse ansible variable place holders. Perhaps we need a better way for BLT to find the Drupal docroot within the VM.

What is the value of vagrant_synced_folders.0.destination in box/config.yml?

[bobbygryzynger]

@grasmash the output above is the literal output and yeah, the issue is how I have the box configured:

vagrant_synced_folders:
  - local_path: .
    destination: "/var/www/{{ vagrant_machine_name }}"
    type: nfs

[grasmash]

For the time being, I'm just going to have BLT emit an informative warning if you're using Ansible variable placeholders here. I'd accept a PR that introduces Ansible variable resolution, but I'm going to stick with MVP for now.

[bobbygryzynger]

@grasmash that's fine. This should be an easy enough fix.