Trouble starting a project

[Parth]

Trying to get off the ground with bazel, but having trouble with a minimal example: when I bazel build :scalabook for example I get the following error:

WARNING: /private/var/tmp/_bazel_parth.mehrotra/56e65e76c6e5acbbd30fd286bccbe6a3/external/bazel_tools/tools/jdk/BUILD:116:1: in alias rule @bazel_tools//tools/jdk:java: target '@bazel_tools//tools/jdk:java' depends on deprecated target '@local_jdk//:java': Don't depend on targets in the JDK workspace; use @bazel_tools//tools/jdk:current_java_runtime instead (see https://github.com/bazelbuild/bazel/issues/5594)
WARNING: /private/var/tmp/_bazel_parth.mehrotra/56e65e76c6e5acbbd30fd286bccbe6a3/external/rules_scala_annex/src/main/scala/higherkindness/rules_scala/common/args/BUILD:4:1: in scala_library rule @rules_scala_annex//src/main/scala/higherkindness/rules_scala/common/args:args: target '@rules_scala_annex//src/main/scala/higherkindness/rules_scala/common/args:args' depends on deprecated target '@local_jdk//:java': Don't depend on targets in the JDK workspace; use @bazel_tools//tools/jdk:current_java_runtime instead (see https://github.com/bazelbuild/bazel/issues/5594)
ERROR: /private/var/tmp/_bazel_parth.mehrotra/56e65e76c6e5acbbd30fd286bccbe6a3/external/rules_scala_annex/src/main/scala/higherkindness/rules_scala/common/args/BUILD:4:1: in scala_library rule @rules_scala_annex//src/main/scala/higherkindness/rules_scala/common/args:args:
Traceback (most recent call last):
        File "/private/var/tmp/_bazel_parth.mehrotra/56e65e76c6e5acbbd30fd286bccbe6a3/external/rules_scala_annex/src/main/scala/higherkindness/rules_scala/common/args/BUILD", line 4
                scala_library(name = 'args')
        File "/private/var/tmp/_bazel_parth.mehrotra/56e65e76c6e5acbbd30fd286bccbe6a3/external/rules_scala_annex/rules/scala.bzl", line 203, in _scala_library_implementation
                _run_phases(ctx, [("resources", _phase_resourc...)])
        File "/private/var/tmp/_bazel_parth.mehrotra/56e65e76c6e5acbbd30fd286bccbe6a3/external/rules_scala_annex/rules/private/phases/api.bzl", line 28, in _run_phases
                function(ctx, g)
        File "/private/var/tmp/_bazel_parth.mehrotra/56e65e76c6e5acbbd30fd286bccbe6a3/external/rules_scala_annex/rules/private/phases/phase_javainfo.bzl", line 25, in function
                java_common.run_ijar(ctx.actions, jar = ctx.outputs.jar, <2 more arguments>)
expected value of type 'JavaToolchainSkylarkApiProvider' for parameter 'java_toolchain', for call to method run_ijar(actions, jar, target_label = None, java_toolchain) of 'java_common'
ERROR: Analysis of target '//:scalabook' failed; build aborted: Analysis of target '@rules_scala_annex//src/main/scala/higherkindness/rules_scala/common/args:args' failed; build aborted
INFO: Elapsed time: 0.076s
INFO: 0 processes.
FAILED: Build did NOT complete successfully (0 packages loaded, 0 targets configured)

[SrodriguezO]

Hey @Parth I'm having trouble reproducing this issue using the same version of higherkindness/rules_scala you're using in your WORKSPACE file. What version of bazel are you using?

[Parth]

Build label: 0.27.0
Build target: bazel-out/darwin-opt/bin/src/main/java/com/google/devtools/build/lib/bazel/BazelServer_deploy.jar
Build time: Mon Jun 17 13:03:58 2019 (1560776638)
Build timestamp: 1560776638
Build timestamp as int: 1560776638

[SrodriguezO]

Hmmm higherkindness/rules_scala doesn't support that version of Bazel, but I'd expect different errors if that were the cause. Let me test it real quick

[SrodriguezO]

That was the issue.. Just reproduced it with Bazel 0.27.0; I expected a different error to be thrown, however ("The requested Bazel version '$bazel_version' is not supported")

Currently, higherkindness/rules_scala officially supports Bazel versions 0.24.1 and 0.25.2. I'll open a new issue to figure out why the build didn't fail sooner and with the correct error. Sorry about the confusion.

[Parth]

No worries, got similar feedback here, this is the rules set I'm interested in using so I'll grab 0.25

[SrodriguezO]

Sweet. Make sure you grab 0.25.2 :)

Hopefully we can get compatibility with newer versions in the near future. Let us know if you run into any other issues!

[Parth]

Awesome, thanks again!