I’m currently looking into Concourse.

It does have steeper-than-average learning curve, but I really like that it has well-defined fundamentals (resources, jobs, tasks) and isolation with OCI containers. Before I adopt it fully, I want it to run my nix flake dev shell.

My matrix server is nearing 5 years old. I have federation disabled, because I don’t need that - we are using it as a family chat. sqlite database I’m using is now 2GB, but other than that it is working great.

I do acknowledge that I’m not leveraging the things matrix is designed for (federation, e2e encryption), but to be honest, it’s not really good at that.