Great advice.

There’s a temptation, when the sun is shining, to make extra work for oneself. Let’s add a compatibility layer around our app so we can port it from AWS to GCE on a whim.

Then the storms come and you realise the last thing you want, when under pressure, is to have added-complexity to your business logic. Oof.

On the final point, pip install . and a tiny setup.py has worked really well for me. Putting these all in one place and having a house style is nice too. There’s probably even a debhelper to turn them into native packages, though again, that seems like extra makework compared to just throwing your junk onto automatically provisioned production hosts. Vive l’/opt!