EIP-6789: Rename gas to mana
This EIP suggests renaming gas to mana, as proposed by Vitalik Buterin in 2015
Abstract
This EIP suggests renaming gas
to mana
, as proposed by Vitalik Buterin in 2015.
Motivation
The underlying motivation for reviving Vitalik's original proposal from 2015 is that we have finally arrived at the age of Proof-of-Stake, and given the roadmap ahead (i.e. "The Surge", "The Scourge", "The Verge", "The Purge", and "The Splurge"), I consider this moment as the last opportunity to make such a far-reaching semantic change.
Specification
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 and RFC 8174.
The core term gas
MUST be renamed to mana
.
The following opcodes MUST be renamed:
GASPRICE
toMANAPRICE
;GASLIMIT
toMANALIMIT
; andGAS
toMANA
.
Additionally, the input parameters or outputs of the following opcodes MUST be renamed:
CALL
'sgas
input parameter tomana
;CALLCODE
'sgas
input parameter tomana
;DELEGATECALL
'sgas
input parameter tomana
;STATICCALL
'sgas
input parameter tomana
;GASLIMIT
'sgasLimit
output tomanaLimit
; andGAS
'sgas
output tomana
.
Finally, the following RPC endpoints MUST be renamed:
eth_estimateGas
toeth_estimateMana
;eth_gasPrice
toeth_manaPrice
; andeth_maxPriorityFeePerGas
toeth_maxPriorityFeePerMana
.
The description of the RPC endpoints MUST be renamed accordingly:
eth_estimateMana
: Generates and returns an estimate of how muchmana
is necessary to allow the transaction to complete;eth_manaPrice
: Returns the current price permana
in wei; andeth_maxPriorityFeePerMana
: Returns the currentmaxPriorityFeePerMana
permana
in wei.
Rationale
mana
reflects the increased environmental friendliness of Proof-of-Stake;mana
is generally understood to be ephemeral and non-transferable, which better represents the concept ofgas
; andmana
is generally portrayed as renewable, while (natural)gas
is non-renewable.
Backwards Compatibility
This proposal is not backward compatible as it renames the core term gas
.
Test Cases
Example 1
If a transaction requires more mana
than allowed by the manaLimit
, it is reverted as an out-of-mana transaction.
Example 2
A Solidity contract to estimate the used mana
via the new manaleft()
syntax (replacing gasleft()
) for dedicated function calls.
In Vyper, the same behaviour can be replicated with the new transaction property msg.mana
, which replaces msg.gas
.
Example 3
An example of how to set the manaLimit
in MetaMask:
Security Considerations
There are no security considerations directly related to the renaming of gas
to mana
.
Copyright
Copyright and related rights waived via CC0.