[sascha_sl]

I've spent 2 years in a team that was allowed to build platform tooling from scratch and it's been the most productive and high impact work i've done to date.

The only reason I'm not there anymore is that the team disintegrated after a change in leadership. Despite that being years ago, our tooling survived, judging from some headers.

If you glue things together, you inevitably have unknowns about the specifics of how your software actually works, and that very often comes back to bite you. But it's even worse if you do platform engineering, because developers downstream from you will find features (or anti-features) you didn't notice and completely derail and guardrails you had envisioned.

Having full control over everything we wrote kept us nimble and able to react fast. If you own all your code, making small adjustments is easy. If you glue together packages or off the shelf code you may end up having to choose between a trade off and maintaining a fork of a piece of code far beyond the scope of the thing you need. The only pain we had left was keeping in step with kubernetes API packages.