BLT, ACSF, and Drupal 9

Benji Fisher

September 1, 2020


Follow along

About Me

Yellow Pig 

About ???


  • Introduction
  • The old BLT
  • The new BLT
  • Does it work?

The old BLT

What is BLT?

  • BLT: Build and Launch Tool


  • Integration with Acquia Cloud (AC) and Site Factory (ACSF)
  • Automatic code linting/validation
  • Set up Behat testing
  • Accumulated wisdom of Acquia Professional Services (PS) team

What’s Not to Like?

  • pronounced “bloat”?
  • All your base are belong to us!
  • L’etat, c’est moi!
composer create-project \
    --no-interaction \
    acquia/blt-project my-project
  • Manage settings.php and includes
  • Manage Config Split

The new BLT

Compatibility Chart

BLT Drupal Drush
11.x 8.8, 8.9 9.5, 10.0.1
12.x 9.0 10.0.1

Modular Design

composer require

  • acquia/blt
  • acquia/blt-acsf
  • acquia/blt-behat
  • acquia/blt-vm
  • acquia/blt-phpcs
  • acquia/blt-simplesamlphp
  • acquia/blt-probo
  • acquia/blt-tugboat


  • BLT 12 has a full release; latest is 12.2.0
  • None of the plugins has a release yet
  • Some of the plugins are broken
  • Some of the plugins are partially separated

Does it work?

Recent bug reports

  • BLT 12 overwrites drush site alias
  • BLT 12 checks isAcsfInited() instead of isAcsfEnv() in default.local.settings.php
  • Do not assume Drupal VM is in use because config file is there
  • Multisite recipe should use actual site URL in drush alias
  • Provide an option to skip web driver launching (blt-behat)

Yes, it works!

I had to fix most of those bugs myself. There is at least one that I am still working around, and one where my fix was rejected.

My colleague Marco Villegas reported and fixed the blt-behat bug.

We have Drupal 9 test sites running on Site Factory (ACSF).


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