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This commit introduces a new "static" launcher that does not use Ivy to gather all the artifacts that it requires, but rather expect them to be immediately available. To be able to use sbt without Internet access, we add a new `ComponentCompiler` that is able to retrieve the bridge sources from the resources on classpath and compile it.
The launcher defines a top classloader that willbe used by all `ScalaInstance`s. Previously, this top classloader had a parent that contained the scala library 2.10, which prevented the correct compilation of the compiler bridge for scala 2.11. Also, we no longer need the scala-reflect JAR.
It turns out we need to have `scala-reflect.jar` on classpath to compile the compiler bridge for the static scala instance of the launcher.
It turns out that we can leverage the`FakeResolver` that has been implemented to use with the static launcher, and resolve a "fake compiler bridge" using it, rather than copying it from the resources. This also has the advantage of not requiring to change the build definition.
This allows sbt to resolve the compiler bridge sources when using the static launcher
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Notes please. |
This is a combination of 13 commits. I squashed these 13 commits to make forward porting those changes easier, since some commit undo the changes of other commits. The PRs that include these changes can be found at sbt/sbt#2564 and sbt/sbt#2576. Static launcher, get bridge sources from resources This commit introduces a new "static" launcher that does not use Ivy to gather all the artifacts that it requires, but rather expect them to be immediately available. To be able to use sbt without Internet access, we add a new `ComponentCompiler` that is able to retrieve the bridge sources from the resources on classpath and compile it. Fix classpath issues in static launcher The launcher defines a top classloader that willbe used by all `ScalaInstance`s. Previously, this top classloader had a parent that contained the scala library 2.10, which prevented the correct compilation of the compiler bridge for scala 2.11. Also, we no longer need the scala-reflect JAR. Tests for FakeResolver Add `scala-reflect.jar` to JARs of `StaticScalaProvider` It turns out we need to have `scala-reflect.jar` on classpath to compile the compiler bridge for the static scala instance of the launcher. Comply to Ivy's specification in `FakeResolver` Remove `CompilerBridgeProvider` and `ResourceBridgeProvider` It turns out that we can leverage the`FakeResolver` that has been implemented to use with the static launcher, and resolve a "fake compiler bridge" using it, rather than copying it from the resources. This also has the advantage of not requiring to change the build definition. Fix NPE in FakeResolver Add compiler bridge sources to fake resolver This allows sbt to resolve the compiler bridge sources when using the static launcher Don't hardcode sbt version in static launcher Add scala compiler and library to fake resolver This allows us to still resolve them if we have no other resolver configured. Add `RepositoriesParser` This parser is used by the static launcher to parse the definition of resolvers that override the build resolvers. Support repositories override in static launcher The static launcher will now parse user-defined repositories like the usual launcher does. Specifically, the static launcher now uses the following configuration: - `sbt.boot.directory`: specifies the boot directory that sbt will use. Defaults to `~/.sbt/boot`. - `sbt.override.build.repos`: indicate whether we want to override the build resolvers. Defaults to false. - `sbt.repository.config`: specifies the path to the files that contains repositories definition. Defaults to `${sbt.boot.directory}/repositories`. Notes for sbt/sbt#2564 & sbt/sbt#2576
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If I understand correctly, among other things this change allows me to call, for example, If this is the case: How do I tell Sorry if this isn't the right place to ask this question! |
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FYI: I'm working on improving the packaging of SBT applications in the Nix package manager (https://nixos.org/nix). Basically, I want to be able to call |
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This was an experimental feature, and it hasn't been given enough attention. |
This PR adds a new main object
sbt.Mainthat implements a launcher that can start sbt without ivy or internet access.The new command
installcreates the fat JAR that can then be launched.Ref #2518