PackagePlugin: make Path a wrapper around AbsolutePath

[compnerd]

This should help the path representation be properly represented on different platforms. This is motivated by Windows which would have the drive stripped from the path, converting to a relative path the absolute path.

[compnerd]

@swift-ci please smoke test

[tomerd]

@abertelrud

[stevapple]

Nice to see it, but why not use FilePath instead? That should be more performant and robust, and by using System instead we’re a step closer to the goal of eliminating TSC.

[compnerd]

Because that still needs to be tested more heavily before it can be ready to use. There are issues that have been fixed in t-s-c that haven't been done in System yet. Furthermore, that adds another dependency before this is really ready to be removed. Since this is @_implementationOnly we can swap it later without it impacting the user. I'd say that this makes it no more difficult to remove the t-s-c dependency.

[abertelrud]

Seems reasonable though it's a bit concerning if FilePath still isn't ready for use. @compnerd any idea on when that might be fixed?

[tomerd]

@swift-ci smoke test

[MaxDesiatov]

Seems reasonable though it's a bit concerning if FilePath still isn't ready for use. @compnerd any idea on when that might be fixed?

+1 on this, what are the issues on the System repository to track feature parity of FilePath with AbsolutePath?