Metropolis Plan Discussion

[Souptacular]

NOTE: OUTDATED. Please see: https://github.com/ethereum/EIPs/blob/master/README.md for latest accepted EIPS.

Metropolis Discussion

Use this issue for discussion around Metro. I will update chart/todo list as comments come in.

Approximate ice age start (according to Vitalik):

• Around March 25th (3 months) - Block time is 15.2 sec.
• Around July 25th (6 months) - Block time is 29.7 sec.

Metropolis Todo

• Decide which EIPs will potentially be in Metro (by way of EIP acceptance)
• Based on chart, decide which EIPs can fit into metro and which ones will not
• Pick a block number for Ropsten/Mainnet Metropolis

EIP Implementation Chart

Note: The EIPs listed in the chart are not necessarily approved for Metro via the EIP acceptance process, but we want to get information as early as possible.

Client	EIP 5/8	EIP 86	EIP 100	EIP 101	EIP 166	EIP 196 & 197	EIP 206 & 207
go-ethereum	✖️	✖️	✖️	✖️	✖️	✖️	✖️
Parity	✖️	✖️	✖️	✖️	✖️	✖️	✖️
cpp-ethereum	✖️	✖️	✖️	✖️	✖️	✖️	✖️
pyethapp	✖️	✖️	✖️	✖️	✖️	✖️	✖️
ethereumjs-lib	✖️	✖️	✖️	✖️	✖️	✖️	✖️
Ethereum(J)	✖️	✖️	✖️	✖️	✖️	✖️	✖️
ruby-ethereum	✖️	✖️	✖️	✖️	✖️	✖️	✖️

[romanman]

you have double Parity there

[Souptacular]

Thanks Roman!

[kumavis]

@Souptacular not "ethereumjs-lib" just "ethereumjs"

[kumavis]

Note: The EIPs listed in the chart are not necessarily approved for Metro via the EIP acceptance process, but we want to get estimates as early as possible.

@Souptacular as possible it would be great to have the EIPs ordered by likelyhood of them being included in the next feature fork

[Souptacular]

That's a great idea. I currently do not have enough knowledge of the EIPs and their discussion history to make that call. It would be great if someone else could.

@obscuren, @chriseth, @vbuterin, @gavofyork: If any of you have time to quickly put a comment with what you consider to be the most likely to be implemented EIPs I can reorder the chart.

[Nashatyrev]

ethereum/EIPs#166 : why do we need another replay protection?

[obscuren]

go-ethereum metropolis progress

[Souptacular]

@Nashatyrev Please ask in the the EIP Issue page for #166 and tag @vbuterin

[Souptacular]

The chart has been updated to correct some inaccurate potential EIPs.

[pirapira]

@Souptacular does it make sense to add "yellowpaper" as a client in the chart?

[mrstormlars]

What about delaying the diff.bomb and eventually decrease inflation (EIP#186/#189)? The Eth-community should have a possibility to vote on this.

[tawaren]

Is their any plan to include a byte code / EVM versioning scheme like #154 in Metropolis?