Regression: "exhausted attempts to resolve the dependencies graph"

[gjcairo]

Is it reproducible with SwiftPM command-line tools: swift build, swift test, swift package etc?

• Confirmed reproduction steps with SwiftPM CLI. The description text must include reproduction steps with either of command-line SwiftPM commands, swift build, swift test, swift package etc.

Description

We are seeing SPM failures (link, link) like the following:

error: exhausted attempts to resolve the dependencies graph, with the following dependencies unresolved:
* 'yams' from https://github.com/jpsim/Yams

This used to be an issue back in 6.2 fixed in #9269, but there seems to have been a regression and it's back in 6.4-dev and 6.5-dev.

Expected behavior

No response

Actual behavior

No response

Steps to reproduce

No response

Swift Package Manager version/commit hash

No response

Swift & OS version (output of swift --version ; uname -a)

Swift versions 6.4-dev (LLVM 885b338ea38aee1, Swift db4e13695491982) and 6.5-dev (LLVM 6f2057ffeafd4c6, Swift 83c32e02f71e4bb)