[swift-build-dev] [swift-evolution] [Proposal] Lock file for Swift Package Manager

[Max Howell]

> Personally, I often work offline, and currently I'm often working on a project and its dependencies at the same time.
> For those two reasons, *in the current proposal state* #1 would be my preferred choice (with proper warnings).

I think it is reasonable for the build to proceed if there is no network connectivity. Just with warnings, since it is possible it will fail/be broken/etc.