[swift-evolution] Allow commits or branches in the Swift Package Manager instead of Version

Tyler Fleming Cloutier cloutiertyler at aol.com
Mon May 23 03:24:30 CDT 2016

I’m going to shamelessly bump this, because this is a pretty huge pain point for me, and I think others who are trying to build and test with Swift 3.

> On May 14, 2016, at 3:12 PM, Tyler Fleming Cloutier via swift-evolution <swift-evolution at swift.org> wrote:
> Has there been any discussion on allowing direct specification of commits or branches for the Swift Package Manager on the list? Currently it only supports semantic versioning tags, which makes for a tricky development process for developers adding Swift 3 support to their packages.
> For example, consider a Swift 2.2 library that is tagged with 0.2.0. If developer wants to support Swift 3, they have to either add Swift 3 support with #if swift directives which is difficult due to the large number of source changes in Swift 3 and then tag an maintain the new version in the normal way, or maintain a separate Swift 3 branch. Maintaining a separate branch is tricky because in order to use Swift PM you have to tag commits on the new branch. Would this new branch be tagged 0.3.0? What if there needs to be a new release under Swift 2.2? It’s also unfortunate because the developer has no way of letting other developers use the package without creating a release tag.
> This difficultly would me drastically mitigated if Swift PM allowed the tracking of the latest commit on a branch, or the ability to specify a particular commit as a version.
> Tyler
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