Make block gas limit configurable about eth-tester HOT 6 CLOSED

@palango 👍 to making genesis parameters configurable.

I'd rather do this as an optional constructor parameter to the PyEVMBackend to allow supplying genesis_params. I think adding genesis_state would also be beneficial, but that part could be more tricky since we also have to initialize the default accounts and there is a question of whether genesis_state should be merged with the default account state, or whether it should fully override it...

@voith I think your last option is what I'm talking about

providing config as a parameter to the entry point(I'm fairly new to this project and I don't know the entry point)?

The entry point in question would be the PyEVMBackend class instantiation.

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@palango just curious to know how you'd make such constants configurable. Are you thinking of something like django settings, env variables or providing config as a parameter to the entry point(I'm fairly new to this project and I don't know the entry point)?

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Making the genesis parameters constructor parameters sounds good and usable to me. Adding genesis state would surely be useful with large contract systems. Here it would be good if it is nicely integrated with the snapshot system, i.e. using snapshots of a chain as genesis state.

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@palango do you think you have enough context to either:

• update this issue with a reasonable spec for providing genesis params
• create a new issue speccing thing out?

RE: snapshots, I do think that's a solid API for eth-tester to implement but I'd push that out into a separate issue/ticket.

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@pipermerriam I'm in vacation right now and will look into this afterwards.

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This is possible (though not pleasant yet), so I'll close. There's a tracking issue for making it better: #129

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