[dkarapetyan]

We have a similar design but need to juggle js and python in some interesting ways. There are only so many variations on the theme of CI so I'm not surprised about the convergent design. Our environment is not as heterogenous and we leverage pre-baked AMIs and LXC containers for isolation and reproducibility.

My contention was the emphasis on local reproducibility. In the past I would have said yes, local reproducibility should be a feature of any well designed CI pipeline but nowadays I'm not sure anymore.

Local development environments are optimized for iteration speed at the cost of reproducibility and stability. Whether this is the right decision or not can be debated. CI environment on the other hand is designed for reproducibility and stability. Those sets of requirements are somewhat at odds and you can't optimize for all at the same time. Tools should be shared across local and CI environments as much as possible but not when it comes at the cost of compromising the requirements for each environment.