[Compilers] metadata with useLiteralContent options is not respected

[wighawag]

Which compiler are you using?

• zksolc
• zkvyper

Which version of Solidity or Vyper?

0.8.17

zksolc/zkvyper version?

1.4.0

Explain the issue

I am using the following settings for zksolc


zksolc: {
		version: "1.4.0",
		settings: {
			outputSelection: {
				'*': {
					'*': ['metadata'],
				},
			},
			metadata: {useLiteralContent: true}
		}
	},

But it output instead ipfs hash for the content

"metadata": {
      "optimizer_settings": {
        "is_debug_logging_enabled": false,
        "is_fallback_to_size_enabled": false,
        "is_system_request_memoization_disabled": false,
        "is_verify_each_enabled": false,
        "level_back_end": "Aggressive",
        "level_middle_end": "Aggressive",
        "level_middle_end_size": "Zero"
      },
      "solc_metadata": "{\"compiler\":{\"version\":\"0.8.17+commit.06f20ae5\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[{\"internalType\":\"string\",\"name\":\"_greeting\",\"type\":\"string\"}],\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"inputs\":[],\"name\":\"greet\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"string\",\"name\":\"_greeting\",\"type\":\"string\"}],\"name\":\"setGreeting\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"kind\":\"dev\",\"methods\":{},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"src/Greeter.sol\":\"Greeter\"},\"evmVersion\":\"london\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"details\":{\"constantOptimizer\":false,\"cse\":false,\"deduplicate\":false,\"inliner\":false,\"jumpdestRemover\":false,\"orderLiterals\":false,\"peephole\":false,\"yul\":true,\"yulDetails\":{\"optimizerSteps\":\"dhfoDgvulfnTUtnIf[xa[r]EscLMcCTUtTOntnfDIulLculVcul [j]Tpeulxa[rul]xa[r]cLgvifCTUca[r]LSsTFOtfDnca[r]Iulc]jmul[jul] VcTOcul jmul\",\"stackAllocation\":true}},\"runs\":200},\"remappings\":[]},\"sources\":{\"src/Greeter.sol\":{\"keccak256\":\"0xc60baa9a1e990a523e3dc7801c2ad14d6ebb76889906b3f5f782801dd0b47463\",\"license\":\"Unlicense\",\"urls\":[\"bzz-raw://08addef89ca412d681c74015fe812f6dd85c58d386ac5cbc00a7fab938d2b4d6\",\"dweb:/ipfs/QmVPjd7shH5ryKijzgRZ34zUoMzbAzXQqAuM18GiWQAS2d\"]}},\"version\":1}",
      "solc_version": "0.8.17",
      "solc_zkvm_edition": "1.0.0",
      "zk_version": "1.4.0"
    },

### Link to your repo?

_No response_

[bxpana]

Thanks for the post. Will take a look into it.

[bxpana]

@wighawag just wanted to check to see if this is related to your issue at all #194 (reply in thread)

[bxpana]

Had the team look into it and we have a different bytecode and metadata hash format so it's not easy to support, and also there is no Rust library for IPFS hash as far as we know. We're looking into this but it will take a bit before there is any support for this.

[wighawag]

Hmmm, not sure i understand. I am actually not requesting any support for ipfs. I want the metadata to actually have no ref tonipfs and simply have all the code as is in the metadata
That is what the option "useLiteralContent" does

[hedgar2017]

Sorry @wighawag, misunderstood your previous message.
Indeed it is enough to pass the flag through to solc. I'll add it now and it will appear in the release that is expected in a few days.

[hedgar2017]

@wighawag please try zksolc v1.4.1!

[wighawag]

Thanks @hedgar2017 I can confirm it works!