Hi @abcoathup , I’m getting this error too when dealing with both upgradable and non upgradable contracts in the same truffle project. Is this supported now? I’m using "@openzeppelin/contracts": "^2.4.0", "@openzeppelin/contracts-ethereum-package": "^2.5.0", "@openzeppelin/upgrades": "^…

Hi @bugduino , OpenZeppelin Contracts Ethereum Package from v3 the contracts have an UpgradeSafe suffix. If possible I would use those, otherwise you could have a clash where your contracts are importing a contract with the same name from OpenZeppelin Contracts and OpenZeppelin Contracts Ethereum …

Unfortunately I need that specific version because I’m using Solidity 0.5.16 and Contracts Ethereum Package v3 supports only Solidity 0.6.x. In the end I was able to achieve what I wanted directly using the @openzeppelin/upgrades package in my migration file using ProxyAdmin project which should be…

@abcoathup would you recommend using the UpgradeSafe versions even on non-upgradeable contracts in the same project just to avoid those clashes, and scrap @openzeppelin/contracts altogether? I just came upon this thread after posting a similar question of my own a few minutes ago: Importing non-upg…

Hi @dtp5 , I would recommend using OpenZeppelin Contracts for regular contracts and OpenZeppelin Contracts Ethereum Package for upgradeable contracts as we want to initialize our contracts in the same transaction that they are deployed. This is easily done with constructors. With upgradeable contr…

Are upgradable and non upgradable contracts in the same truffle project supported?

Archive SDK

Topic		Replies	Views
Which version of OpenZeppelin Contracts should be used for upgradeable contracts? Upgrades	7	2644	November 19, 2020
Is it safe to upgrade from contracts-ethereum-package to contracts-upgradeable on existing contract Upgrades	11	1611	March 20, 2021
Is upgrading contracts npm package safe for upgradeable contracts? Upgrades	1	596	June 3, 2021
How to use Ownable with upgradeable contract? Contracts	11	9076	November 12, 2020
The Future of contracts-ethereum-package Announcements	11	4537	November 15, 2020

Are upgradable and non upgradable contracts in the same truffle project supported?

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