All of a sudden, on a commit which had nothing to do with drush as far as I can tell, drush stopped working on platform.sh. I got an error like this: env: drush: No such file or directory Which is to say, "no drush here." But why? It's added in composer. Nothing changed. I ran platform drush-aliases and refreshed them. Stop asking why. Here's how I fixed it. Turns out that drush still exists on the server, even though which drush led to nothing. Not in the path? Unclear. Here's how I fixed it. Or worked around it…
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