Events missing in library ABI when using another lib

[michprev]

Description

After reading #14501, I believe the case I am describing is not well-expected behavior.

When including a library Lib (with using-for) into another library Lib2, events from Lib are missing in Lib2 ABI. However, when I do the same with a contract, i.e. include Lib into contract Foo, the contract's ABI includes events from Lib.

Note that Lib2 may be deployed as a standalone lib and delegatecalled into, making it impossible to resolve the emitted event correctly.

Environment

• Compiler version: 0.8.28, 0.8.0, 0.7.0
• Compilation pipeline (legacy, IR, EOF): legacy, IR
• Target EVM version (as per compiler settings):
• Framework/IDE (e.g. Foundry, Hardhat, Remix):
• EVM execution environment / backend / blockchain client:
• Operating system: macOS

Steps to Reproduce

Compile and print ABI

library Lib {
    event Foo(uint256 value);

    function foo(uint256 value) internal {
        emit Foo(value);
    }
}

library Lib2 {
    using Lib for uint256;

    function foo2(uint256 value) internal {
        value.foo();
    }
}

contract Foo {
    using Lib for uint256;

    function bar() public {
        uint256 value = 1;
        value.foo();
    }
}