The uglier but backward compatible fix for #3086 is to use u3 format with three slashes. This on Windows will resolve to `file:///C:/Users/foo/.sbt/preloaded`, and on Mac and Linux `file:////root/.sbt/preloaded/`. Mac and Linux are both tolerant of extra slashes on the front:
```
> eval new File(new URL("file:////Users/foo/.sbt/preloaded/").toURI)
[info] ans: java.io.File = /Users/foo/.sbt/preloaded
```
Forward-port of #2338.
Include sbt-ivy-snapshots to launchconfig
Prior to this change, the launchconfig for sbt was generated using
Transform's resource generator so releases would include
`typesafe-ivy-releases` repo, and snapshot releases would include
`typesafe-ivy-snapshots` and `sonatype-snapshots` repos in addition.
This is no longer useful since nightly builds are now published to
`sbt-ivy-snapshots` instead, which is backed by Bintray.
This removes the switching logic, so both `typesafe-ivy-releases` and
`sbt-ivy-snapshots` repos are always included into the launchconfig.
This removes the step of needing to download a launcher just to try the
nightly builds.
* Puppies may rest easy from the removal of Option.get calls.
* better names for config values
* Added a helper method to avoid any possible code duplication, besides repeated def, val, match and for keywords.
Looking for ways to remove this duplciation ASAP.
* Moved from pattern match to ._1, my most hated member.
This is motivated by the high likelihood that it is causing the
various problems some users have with the launcher not finding
some dependencies. ref #217.
Eugene Yokota
Josh Suereth
Marko Elezovic
Grzegorz Kossakowski
Mark Harrah