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incompatible_use_jdk10_as_host_javabase: makes JDK 10 the default --host_javabase for remote jdk #6661

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cushon opened this Issue Nov 12, 2018 · 10 comments

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cushon commented Nov 12, 2018

The option --incompatible_use_jdk10_as_host_javabase makes JDK 10 the default --host_javabase.

See also --incompatible_use_remotejdk_as_host_javabase (#6656).

Migration notes

If you set the flag, Bazel will use JDK 10 as the default --host_javabase.

For more information about JDK 10, see the release notes.

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dslomov commented Nov 13, 2018

Where does it get JDK10? Do you mean it downloads JDK10 as a remote JDK?

@dslomov dslomov changed the title --incompatible_use_jdk10_as_host_javabase incompatible_use_jdk10_as_host_javabase: makes JDK 10 the default --host_javabase for remote jdk Nov 13, 2018

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cushon commented Nov 13, 2018

Do you mean it downloads JDK10 as a remote JDK?

Right, see also #6656.

As discussed with @lberki I think this might be slated for 0.22 instead.

bazel-io pushed a commit that referenced this issue Nov 30, 2018

Release 0.20.0 (2018-11-30)
Baseline: 7bf7f03

Cherry picks:

   + fd52341:
     update bazel-toolchains pin to latest release Part of changes to
     allow bazelci to use 0.19.0 configs. RBE toolchain configs at or
     before 0.17.0 are not compatible with bazel 0.19.0 or above.
   + 241f28d:
     Revert "Toggle --incompatible_disable_late_bound_option_defaults
     flag."
   + f7e5aef:
     Add cc_toolchain targets for the new entries in the default
     cc_toolchain_suite.
   + d2920e3:
     Revert "WindowsFileSystem: open files with delete-sharing"

[Breaking changes in 0.20](https://github.com/bazelbuild/bazel/issues?q=is%3Aissue+label%3Abreaking-change-0.20)

  - [--incompatible_remove_native_http_archive](#6570).
  - [--incompatible_remove_native_git_repository](#6569).
  - [--incompatible_disable_cc_toolchain_label_from_crosstool_proto](#6434).
  - [--incompatible_disable_depset_in_cc_user_flags](#6384).
  - [--incompatible_disable_cc_configuration_make_variables](#6381).
  - [--incompatible_disallow_conflicting_providers](#5902).
  - [--incompatible_range_type](#5264).

[0.20 is a migration window for the following changes](https://github.com/bazelbuild/bazel/issues?q=is%3Aissue+label%3Amigration-0.20)

  - [--incompatible_use_jdk10_as_host_javabase](#6661)
  - [--incompatible_use_remotejdk_as_host_javabase](#6656)
  - [--incompatible_disable_sysroot_from_configuration](#6565)
  - [--incompatible_provide_cc_toolchain_info_from_cc_toolchain_suite](#6537)
  - [--incompatible_disable_depset_in_cc_user_flags](#6383)
  - [--incompatible_package_name_is_a_function](#5827)

[Breaking changes in the next release (0.21)](https://github.com/bazelbuild/bazel/issues?q=is%3Aissue+label%3Abreaking-change-0.21)

  - [--incompatible_use_jdk10_as_host_javabase](#6661)
  - [--incompatible_use_remotejdk_as_host_javabase](#6656)
  - [--incompatible_disable_sysroot_from_configuration](#6565)
  - [--incompatible_provide_cc_toolchain_info_from_cc_toolchain_suite](#6537)
  - [--incompatible_disable_depset_in_cc_user_flags](#6383)
  - [--incompatible_disallow_data_transition](#6153)
  - [--incompatible_package_name_is_a_function](#5827)
  - [--incompatible_disallow_slash_operator](#5823)
  - [--incompatible_static_name_resolution](#5637)

Incompatible changes:

  - the --experimental_no_dotd_scanning_with_modules command line
    argument is not supported anymore.
  - The --prune_cpp_modules command line option is not supported
    anymore.
  - the --experimental_prune_cpp_input_discovery command line option
    is not supported anymore.

New features:

  - Added support for Android NDK r18.

Important changes:

  - The 'default' parameter of attr.output and attr.output_list is
    removed. This is controlled by
    --incompatible_no_output_attr_default
  - A number of platform-related Starlark APIs which were previously
    marked "experimental" are now disabled by default, and may be
    enabled via --experimental_platforms_api
  - Make legacy-test-support ("legacy_test-<api-level>") from
    android_sdk_repository neverlink. The legacy test support
    libraries shouldn't be built into test binaries. To make them
    available at runtime, developers should declare them via
    uses-library:
    https://developer.android.com/training/testing/set-up-project#andr
    oid-test-base
  - query remote server Capabilities (per REAPI v2)
  - CppRules: All cc_toolchains depended on from
    cc_toolchain_suite.toolchains are now analyzed when not using
    platforms in order to select the right cc_toolchain.
  - removed obsolete --explicit_jre_deps flag.
  - Incompatible flag
    --incompatible_disable_legacy_cpp_toolchain_skylark_api was
    flipped.
  - Improve error messaging when unsupport proguard options are
    specified at the library level.
  - Incompatible flag
    --incompatible_disable_legacy_cpp_toolchain_skylark_api was
    flipped.
  - Incompatible flag
    --incompatible_disable_legacy_cpp_toolchain_skylark_api was
    flipped.
  - The --incompatible_disable_late_bound_option_defaults flag has
    been flipped (#6384)
  - Incompatible flag
    --incompatible_disable_legacy_flags_cc_toolchain_api was flipped
    (#6434)
  - Fixed issue where ctx.resolve_command created conflicting
    intermediate files when resolve_command was called multiple times
    within the same rule invocation with a long command attribute.
  - Incompatible flag
    --incompatible_disable_cc_configuration_make_variables was
    flipped (#6381)
  - If the --javabase flag is unset, it Bazel locates a JDK using
    the JAVA_HOME environment variable and searching the PATH. If no
    JDK is found --javabase will be empty, and builds targeting Java
    will not
    be supported. Previously Bazel would fall back to using the
    embedded
    JDK as a --javabase, but this is no longer default behaviour. A
    JDK should
    be explicitly installed instead to enable Java development
  - Bazel will now shut down when idle for 5 minutes and the system
    is low on RAM (linux only).
  - CROSSTOOL file is now read from the package of cc_toolchain, not
    from
    the package of cc_toolchain_suite. This is not expected to break
    anybody since
    cc_toolchain_suite and cc_toolchain are commonly in the same
    package.
  - All overrides of Starlark's ctx.new_file function are now
    deprecated.
      Try the `--incompatible_new_actions_api` flag to ensure your
    code is forward-compatible.
  - --incompatible_disable_cc_toolchain_label_from_crosstool_proto
    was flipped.
  - Introduce --(no)shutdown_on_low_sys_mem startup flag to toggle
    idle low-memory shutdown, disabled by default.
  - --incompatible_disable_cc_toolchain_label_from_crosstool_proto
    was flipped.
  - --incompatible_disable_cc_toolchain_label_from_crosstool_proto
    was flipped.
  - CppRules: All cc_toolchains depended on from
    cc_toolchain_suite.toolchains are now analyzed when not using
    platforms in order to select the right cc_toolchain.
  - The function `attr.license` is deprecated and will be removed.
      It can be disabled now with `--incompatible_no_attr_license`.
  - `range()` function now returns a lazy value
    (`--incompatible_range_type` is now set by default).
  - The code coverage report now includes the actual paths to header
    files instead of the ugly,
    Bazel generated, virtual includes path.
  - `--incompatible_disallow_conflicting_providers` has been switched
    to true
  - Add new flag `--incompatible_disable_systool_from_configration` to
    disable loading the systool from CppConfiguration.
  - Add new flag `--incompatible_disable_sysroot_from_configuration`
    to
    disable loading the systool from CppConfiguration.
  - Sorting remote Platform properties for remote execution. May
    affect cache keys!
  - Use different server log files per Bazel server process; java.log
    is
    now a symlink to the latest log.

This release contains contributions from many people at Google, as well as a7g4 <a7g4@a7g4.net>, Alan <alan.agius@betssongroup.com>, Asaf Flescher <asafflesch@gmail.com>, Benjamin Peterson <bp@benjamin.pe>, Ed Schouten <ed.schouten@prodrive-technologies.com>, George Gensure <ggensure@uber.com>, George Kalpakas <kalpakas.g@gmail.com>, Greg <gregestren@users.noreply.github.com>, Irina Iancu <iirina@users.noreply.github.com>, Keith Smiley <keithbsmiley@gmail.com>, Loo Rong Jie <loorongjie@gmail.com>, Mark Zeren <mzeren@vmware.com>, Petros Eskinder <petroseskinder@users.noreply.github.com>, rachcatch <rachelcatchpoole@hotmail.com>, Robert Brown <robert.brown@gmail.com>, Robert Gay <robert.gay@redfin.com>, Salty Egg <2281521+zhouhao@users.noreply.github.com>.

ahirreddy pushed a commit to ahirreddy/bazel that referenced this issue Dec 1, 2018

Release 0.20.0 (2018-11-30)
Baseline: 7bf7f03

Cherry picks:

   + fd52341:
     update bazel-toolchains pin to latest release Part of changes to
     allow bazelci to use 0.19.0 configs. RBE toolchain configs at or
     before 0.17.0 are not compatible with bazel 0.19.0 or above.
   + 241f28d:
     Revert "Toggle --incompatible_disable_late_bound_option_defaults
     flag."
   + f7e5aef:
     Add cc_toolchain targets for the new entries in the default
     cc_toolchain_suite.
   + d2920e3:
     Revert "WindowsFileSystem: open files with delete-sharing"

[Breaking changes in 0.20](https://github.com/bazelbuild/bazel/issues?q=is%3Aissue+label%3Abreaking-change-0.20)

  - [--incompatible_remove_native_http_archive](bazelbuild#6570).
  - [--incompatible_remove_native_git_repository](bazelbuild#6569).
  - [--incompatible_disable_cc_toolchain_label_from_crosstool_proto](bazelbuild#6434).
  - [--incompatible_disable_depset_in_cc_user_flags](bazelbuild#6384).
  - [--incompatible_disable_cc_configuration_make_variables](bazelbuild#6381).
  - [--incompatible_disallow_conflicting_providers](bazelbuild#5902).
  - [--incompatible_range_type](bazelbuild#5264).

[0.20 is a migration window for the following changes](https://github.com/bazelbuild/bazel/issues?q=is%3Aissue+label%3Amigration-0.20)

  - [--incompatible_use_jdk10_as_host_javabase](bazelbuild#6661)
  - [--incompatible_use_remotejdk_as_host_javabase](bazelbuild#6656)
  - [--incompatible_disable_sysroot_from_configuration](bazelbuild#6565)
  - [--incompatible_provide_cc_toolchain_info_from_cc_toolchain_suite](bazelbuild#6537)
  - [--incompatible_disable_depset_in_cc_user_flags](bazelbuild#6383)
  - [--incompatible_package_name_is_a_function](bazelbuild#5827)

[Breaking changes in the next release (0.21)](https://github.com/bazelbuild/bazel/issues?q=is%3Aissue+label%3Abreaking-change-0.21)

  - [--incompatible_use_jdk10_as_host_javabase](bazelbuild#6661)
  - [--incompatible_use_remotejdk_as_host_javabase](bazelbuild#6656)
  - [--incompatible_disable_sysroot_from_configuration](bazelbuild#6565)
  - [--incompatible_provide_cc_toolchain_info_from_cc_toolchain_suite](bazelbuild#6537)
  - [--incompatible_disable_depset_in_cc_user_flags](bazelbuild#6383)
  - [--incompatible_disallow_data_transition](bazelbuild#6153)
  - [--incompatible_package_name_is_a_function](bazelbuild#5827)
  - [--incompatible_disallow_slash_operator](bazelbuild#5823)
  - [--incompatible_static_name_resolution](bazelbuild#5637)

Incompatible changes:

  - the --experimental_no_dotd_scanning_with_modules command line
    argument is not supported anymore.
  - The --prune_cpp_modules command line option is not supported
    anymore.
  - the --experimental_prune_cpp_input_discovery command line option
    is not supported anymore.

New features:

  - Added support for Android NDK r18.

Important changes:

  - The 'default' parameter of attr.output and attr.output_list is
    removed. This is controlled by
    --incompatible_no_output_attr_default
  - A number of platform-related Starlark APIs which were previously
    marked "experimental" are now disabled by default, and may be
    enabled via --experimental_platforms_api
  - Make legacy-test-support ("legacy_test-<api-level>") from
    android_sdk_repository neverlink. The legacy test support
    libraries shouldn't be built into test binaries. To make them
    available at runtime, developers should declare them via
    uses-library:
    https://developer.android.com/training/testing/set-up-project#andr
    oid-test-base
  - query remote server Capabilities (per REAPI v2)
  - CppRules: All cc_toolchains depended on from
    cc_toolchain_suite.toolchains are now analyzed when not using
    platforms in order to select the right cc_toolchain.
  - removed obsolete --explicit_jre_deps flag.
  - Incompatible flag
    --incompatible_disable_legacy_cpp_toolchain_skylark_api was
    flipped.
  - Improve error messaging when unsupport proguard options are
    specified at the library level.
  - Incompatible flag
    --incompatible_disable_legacy_cpp_toolchain_skylark_api was
    flipped.
  - Incompatible flag
    --incompatible_disable_legacy_cpp_toolchain_skylark_api was
    flipped.
  - The --incompatible_disable_late_bound_option_defaults flag has
    been flipped (bazelbuild#6384)
  - Incompatible flag
    --incompatible_disable_legacy_flags_cc_toolchain_api was flipped
    (bazelbuild#6434)
  - Fixed issue where ctx.resolve_command created conflicting
    intermediate files when resolve_command was called multiple times
    within the same rule invocation with a long command attribute.
  - Incompatible flag
    --incompatible_disable_cc_configuration_make_variables was
    flipped (bazelbuild#6381)
  - If the --javabase flag is unset, it Bazel locates a JDK using
    the JAVA_HOME environment variable and searching the PATH. If no
    JDK is found --javabase will be empty, and builds targeting Java
    will not
    be supported. Previously Bazel would fall back to using the
    embedded
    JDK as a --javabase, but this is no longer default behaviour. A
    JDK should
    be explicitly installed instead to enable Java development
  - Bazel will now shut down when idle for 5 minutes and the system
    is low on RAM (linux only).
  - CROSSTOOL file is now read from the package of cc_toolchain, not
    from
    the package of cc_toolchain_suite. This is not expected to break
    anybody since
    cc_toolchain_suite and cc_toolchain are commonly in the same
    package.
  - All overrides of Starlark's ctx.new_file function are now
    deprecated.
      Try the `--incompatible_new_actions_api` flag to ensure your
    code is forward-compatible.
  - --incompatible_disable_cc_toolchain_label_from_crosstool_proto
    was flipped.
  - Introduce --(no)shutdown_on_low_sys_mem startup flag to toggle
    idle low-memory shutdown, disabled by default.
  - --incompatible_disable_cc_toolchain_label_from_crosstool_proto
    was flipped.
  - --incompatible_disable_cc_toolchain_label_from_crosstool_proto
    was flipped.
  - CppRules: All cc_toolchains depended on from
    cc_toolchain_suite.toolchains are now analyzed when not using
    platforms in order to select the right cc_toolchain.
  - The function `attr.license` is deprecated and will be removed.
      It can be disabled now with `--incompatible_no_attr_license`.
  - `range()` function now returns a lazy value
    (`--incompatible_range_type` is now set by default).
  - The code coverage report now includes the actual paths to header
    files instead of the ugly,
    Bazel generated, virtual includes path.
  - `--incompatible_disallow_conflicting_providers` has been switched
    to true
  - Add new flag `--incompatible_disable_systool_from_configration` to
    disable loading the systool from CppConfiguration.
  - Add new flag `--incompatible_disable_sysroot_from_configuration`
    to
    disable loading the systool from CppConfiguration.
  - Sorting remote Platform properties for remote execution. May
    affect cache keys!
  - Use different server log files per Bazel server process; java.log
    is
    now a symlink to the latest log.

This release contains contributions from many people at Google, as well as a7g4 <a7g4@a7g4.net>, Alan <alan.agius@betssongroup.com>, Asaf Flescher <asafflesch@gmail.com>, Benjamin Peterson <bp@benjamin.pe>, Ed Schouten <ed.schouten@prodrive-technologies.com>, George Gensure <ggensure@uber.com>, George Kalpakas <kalpakas.g@gmail.com>, Greg <gregestren@users.noreply.github.com>, Irina Iancu <iirina@users.noreply.github.com>, Keith Smiley <keithbsmiley@gmail.com>, Loo Rong Jie <loorongjie@gmail.com>, Mark Zeren <mzeren@vmware.com>, Petros Eskinder <petroseskinder@users.noreply.github.com>, rachcatch <rachelcatchpoole@hotmail.com>, Robert Brown <robert.brown@gmail.com>, Robert Gay <robert.gay@redfin.com>, Salty Egg <2281521+zhouhao@users.noreply.github.com>.
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laurentlb commented Dec 3, 2018

The flag was not flipped. Is it planned for 0.22 instead?

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cushon commented Dec 3, 2018

Yep, that's still the plan.

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laurentlb commented Dec 3, 2018

@dslomov Please create the label "breaking-change-0.22" (and others).

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meteorcloudy commented Jan 3, 2019

This flag will not break any project in downstream, you can see the details at
https://buildkite.com/bazel/bazel-at-release-plus-incompatible-flags/builds/48

You can safely flip it, please go head! ;)

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meteorcloudy commented Jan 3, 2019

Wait, looks like this change will break building Bazel itself, see https://buildkite.com/bazel/bazel-at-release-plus-incompatible-flags/builds/50#38e92ffb-452e-4235-8eb8-e4119857b1bd
I discovered this after adding Bazel itself as a downstream project.

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cushon commented Jan 19, 2019

I can't reproduce the failure; bazel build --incompatible_use_jdk10_as_host_javabase //src:bazel works for me.

The interesting part of the log in #6661 (comment) seems to be:

ERROR: Skipping '//src:bazel_jdk_minimal': no such target '//src:bazel_jdk_minimal': target 'bazel_jdk_minimal' not declared in package 'src' defined by /var/lib/buildkite-agent/builds/bk-worker-ubuntu1404-java8-k24w/bazel-downstream-projects/bazel/src/BUILD

@meisterT any ideas? Is this an interaction between the changes to minify the embedded JDK and --incompatible_use_jdk10_as_host_javabase?

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meisterT commented Jan 22, 2019

That just must have been a weird state of the repository. The host javabase is completely unrelated to that error. I tried manually and it didn't fail, so I think we're fine.

bazel-io pushed a commit that referenced this issue Jan 23, 2019

Enable --incompatible_use_jdk10_as_host_javabase by default
#6661

RELNOTES: Enable --incompatible_use_jdk10_as_host_javabase by default, see #6661
PiperOrigin-RevId: 230581781

weixiao-huang added a commit to weixiao-huang/bazel that referenced this issue Jan 31, 2019

Enable --incompatible_use_jdk10_as_host_javabase by default
bazelbuild#6661

RELNOTES: Enable --incompatible_use_jdk10_as_host_javabase by default, see bazelbuild#6661
PiperOrigin-RevId: 230581781
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philwo commented Feb 6, 2019

I verified that this flag was flipped and thus will be included in the Bazel 0.23.0 release.

@philwo philwo closed this Feb 6, 2019

bazel-io pushed a commit that referenced this issue Feb 26, 2019

Release 0.23.0 (2019-02-26)
Baseline: 441fd75

Cherry picks:

   + 6ca7763:
     Fix a typo
   + 2310b1c:
     Ignore SIGCHLD in test setup script
   + f9eb1b5:
     Complete channel initialization in the event loop

Incompatible changes:

  - //src:bazel uses the minimal embedded JDK, if you want to
    avoid the extra steps of minimizing the JDK, use //src:bazel-dev
    instead.
  - //src:bazel uses the minimal embedded JDK, if you want to
    avoid the extra steps of building bazel with the minimized JDK,
    use //src:bazel-dev
    instead.
  - The default value of --host_platform and --platforms will be
      changed to not be dependent on the configuration. This means
    that setting
      --cpu or --host_cpu will not affect the target or host platform.
  - Toolchain resolution for cc rules is now enabled via an
    incompatible flag, --incompatible_enable_cc_toolchain_resolution.
    The previous
    flag, --enabled_toolchain_types, is deprecated and will be
    removed.
  - java_(mutable_|)proto_library: removed strict_deps attribute.
  - Python rules will soon reject the legacy "py" struct provider
    (preview by enabling --incompatible_disallow_legacy_py_provider).
    Upgrade rules to use PyInfo instead. See
    [#7298](#7298).
  - java_(mutable_|)proto_library: removed strict_deps attribute.
  - Two changes to native Python rules: 1) `default_python_version`
    and `--force_python` are deprecated; use `python_version` and
    `--python_version` respectively instead. You can preview the
    removal of the deprecated names with
    --incompatible_remove_old_python_version_api. See
    [#7308](#7308). 2) The
    version flag will no longer override the declared version of a
    `py_binary` or `py_test` target. You can preview this new
    behavior with --incompatible_allow_python_version_transitions.
    See [#7307](#7307).

Important changes:

  - There is a new flag available
    `--experimental_java_common_create_provider_enabled_packages`
    that acts as a whitelist for usages of
    `java_common.create_provider`. The constructor will be deprecated
    in Bazel 0.23.
  - [#7024] Allow chaining of the same function type in aquery.
  - Introduces --local_{ram,cpu}_resources, which will take the place
    of --local_resources.
  - [#6930] Add documentation for the aquery command.
  - Incompatible flag `--incompatible_dont_emit_static_libgcc` has
    been flipped (#6825)
  - Incompatible flag `--incompatible_linkopts_in_user_link_flags`
    has been flipped (#6826)
  - Flag --incompatible_range_type is removed.
  - Flag --incompatible_disallow_slash_operator is removed.
  - Flag --incompatible_disallow_conflicting_providers is removed.
  - `--incompatible_disallow_data_transition` is now enabled by
    default
  - Allow inclusion of param files in aquery output
  - [#6985] Add test to verify aquery's behavior for Cpp action
    templates.
  - --incompatible_require_feature_configuration_for_pic was flipped
    (#7007).
  - Also ignore module-info.class in multi-version Jars
  - objc_framework has been deleted. Please refer to
    apple_dynamic_framework_import and apple_static_framework_import
    rules available in
    [rules_apple](https://github.com/bazelbuild/rules_apple/blob/maste
    r/doc/rules-general.md)
  - --test_sharding_strategy=experimental_heuristic is no more
  - objc_bundle_library has been removed. Please migrate to
    rules_apple's
    [apple_resource_bundle](https://github.com/bazelbuild/rules_apple/
    blob/master/doc/rules-resources.md#apple_resource_bundle).
  - You can now use the attribute `aapt_version` or the flag
    `--android_aapt` to pick the aapt version for android_local_test
    tests
  - In --keep_going mode, Bazel now correctly returns a non-zero exit
    code when encountering a package loading error during target
    pattern parsing of patterns like "//foo:all" and "//foo/...".
  - The default value for --incompatible_strict_action_env has been
    flipped to 'false' again, as we discovered breakages for local
    execution users. We'll need some more time to figure out the best
    way to make this work for local and remote execution. Follow
    #7026 for more details.
  - Locally-executed spawns tagged "no-cache" no longer upload their
    outputs to the remote cache.
  - Introduces --host_compiler flag to allow setting a compiler for
    host compilation when --host_crosstool_top is specified.
  - --incompatible_expand_directories is enabled by default
  - [aquery] Handle the case of aspect-on-aspect.
  - Fixed a longstanding bug in the http remote cache where the value
    passed to
    --remote_timeout would be interpreted as milliseconds instead of
    seconds.
  - Enable --incompatible_use_jdk10_as_host_javabase by default, see
    #6661
  - Add --incompatible_use_jdk11_as_host_javabase: makes JDK 11 the
    default --host_javabase for remote jdk
    (#7219)
  - Highlight TreeArtifact in aquery text output.
  - Locally-executed spawns tagged "no-cache" no longer upload their
    outputs to the remote cache.
  - java_common APIs now accept JavaToolchainInfo and JavaRuntimeInfo
    instead of configured targets for java_toolchain and java_runtime
  - cc_common.create_cc_toolchain_config_info is stable and available
    for production use
  - incompatible_use_toolchain_providers_in_java_common: pass
    JavaToolchainInfo and JavaRuntimeInfo providers to java_common
    APIs instead of configured targets
    (#7186)
  - --incompatible_strict_argument_ordering is enabled by default.
  - Bazel now supports reading cache hits from a repository cache,
    even if it doesn't have write access to the cache.
  - Adding arm64e to OSX CROSSTOOL.
  - Ignore package-level licenses on config_setting.
  - Add an optional output_source_jar parameter to java_common.compile
  - --incompatible_disable_objc_provider_resources is now enabled by
    default. This disables ObjcProvider's fields related to resource
    processing.
  - Explicitly set https.protocols and exclude TLSv1.3.
  - Bazel now validates that JAVA_HOME points to a valid JDK and
    falls back to auto-detection by looking up the path of `javac`.
  - Upgrade the embedded JDK version to 11.0.2.
  - Added --incompatible_disable_crosstool_file
    (#7320)
  - --incompatible_disable_objc_provider_resources is now enabled by
    default. This disables ObjcProvider's fields related to resource
    processing.
  - --incompatible_disable_tools_defaults_package has been flipped.
  - For tests that do not generate a test.xml, Bazel now uses a
    separate action to generate one; this results in minor
    differences in the generated test.xml, and makes the generation
    more reliable overall.
  - incompatible_generate_javacommon_source_jar: java_common.compile
    now always generates a source jar, see
    #5824.
  - New incompatible flag
    --incompatible_disallow_struct_provider_syntax removes the
    ability for rule implementation functions to return struct. Such
    functions should return a list of providers instead. Migration
    tracking: #7347

This release contains contributions from many people at Google, as well as Benjamin Peterson, Ed Schouten, erenon, George Gensure, Greg Estren, Igal Tabachnik, Ittai Zeidman, Jannis Andrija Schnitzer, John Millikin, Keith Smiley, Kelly Campbell, Max Vorobev, nicolov, Robin Nabel.

excitoon pushed a commit to KasperskyLab/bazel that referenced this issue Feb 27, 2019

Release 0.23.0 (2019-02-26)
Baseline: 441fd75

Cherry picks:

   + 6ca7763:
     Fix a typo
   + 2310b1c:
     Ignore SIGCHLD in test setup script
   + f9eb1b5:
     Complete channel initialization in the event loop

Incompatible changes:

  - //src:bazel uses the minimal embedded JDK, if you want to
    avoid the extra steps of minimizing the JDK, use //src:bazel-dev
    instead.
  - //src:bazel uses the minimal embedded JDK, if you want to
    avoid the extra steps of building bazel with the minimized JDK,
    use //src:bazel-dev
    instead.
  - The default value of --host_platform and --platforms will be
      changed to not be dependent on the configuration. This means
    that setting
      --cpu or --host_cpu will not affect the target or host platform.
  - Toolchain resolution for cc rules is now enabled via an
    incompatible flag, --incompatible_enable_cc_toolchain_resolution.
    The previous
    flag, --enabled_toolchain_types, is deprecated and will be
    removed.
  - java_(mutable_|)proto_library: removed strict_deps attribute.
  - Python rules will soon reject the legacy "py" struct provider
    (preview by enabling --incompatible_disallow_legacy_py_provider).
    Upgrade rules to use PyInfo instead. See
    [bazelbuild#7298](bazelbuild#7298).
  - java_(mutable_|)proto_library: removed strict_deps attribute.
  - Two changes to native Python rules: 1) `default_python_version`
    and `--force_python` are deprecated; use `python_version` and
    `--python_version` respectively instead. You can preview the
    removal of the deprecated names with
    --incompatible_remove_old_python_version_api. See
    [bazelbuild#7308](bazelbuild#7308). 2) The
    version flag will no longer override the declared version of a
    `py_binary` or `py_test` target. You can preview this new
    behavior with --incompatible_allow_python_version_transitions.
    See [bazelbuild#7307](bazelbuild#7307).

Important changes:

  - There is a new flag available
    `--experimental_java_common_create_provider_enabled_packages`
    that acts as a whitelist for usages of
    `java_common.create_provider`. The constructor will be deprecated
    in Bazel 0.23.
  - [bazelbuild#7024] Allow chaining of the same function type in aquery.
  - Introduces --local_{ram,cpu}_resources, which will take the place
    of --local_resources.
  - [bazelbuild#6930] Add documentation for the aquery command.
  - Incompatible flag `--incompatible_dont_emit_static_libgcc` has
    been flipped (bazelbuild#6825)
  - Incompatible flag `--incompatible_linkopts_in_user_link_flags`
    has been flipped (bazelbuild#6826)
  - Flag --incompatible_range_type is removed.
  - Flag --incompatible_disallow_slash_operator is removed.
  - Flag --incompatible_disallow_conflicting_providers is removed.
  - `--incompatible_disallow_data_transition` is now enabled by
    default
  - Allow inclusion of param files in aquery output
  - [bazelbuild#6985] Add test to verify aquery's behavior for Cpp action
    templates.
  - --incompatible_require_feature_configuration_for_pic was flipped
    (bazelbuild#7007).
  - Also ignore module-info.class in multi-version Jars
  - objc_framework has been deleted. Please refer to
    apple_dynamic_framework_import and apple_static_framework_import
    rules available in
    [rules_apple](https://github.com/bazelbuild/rules_apple/blob/maste
    r/doc/rules-general.md)
  - --test_sharding_strategy=experimental_heuristic is no more
  - objc_bundle_library has been removed. Please migrate to
    rules_apple's
    [apple_resource_bundle](https://github.com/bazelbuild/rules_apple/
    blob/master/doc/rules-resources.md#apple_resource_bundle).
  - You can now use the attribute `aapt_version` or the flag
    `--android_aapt` to pick the aapt version for android_local_test
    tests
  - In --keep_going mode, Bazel now correctly returns a non-zero exit
    code when encountering a package loading error during target
    pattern parsing of patterns like "//foo:all" and "//foo/...".
  - The default value for --incompatible_strict_action_env has been
    flipped to 'false' again, as we discovered breakages for local
    execution users. We'll need some more time to figure out the best
    way to make this work for local and remote execution. Follow
    bazelbuild#7026 for more details.
  - Locally-executed spawns tagged "no-cache" no longer upload their
    outputs to the remote cache.
  - Introduces --host_compiler flag to allow setting a compiler for
    host compilation when --host_crosstool_top is specified.
  - --incompatible_expand_directories is enabled by default
  - [aquery] Handle the case of aspect-on-aspect.
  - Fixed a longstanding bug in the http remote cache where the value
    passed to
    --remote_timeout would be interpreted as milliseconds instead of
    seconds.
  - Enable --incompatible_use_jdk10_as_host_javabase by default, see
    bazelbuild#6661
  - Add --incompatible_use_jdk11_as_host_javabase: makes JDK 11 the
    default --host_javabase for remote jdk
    (bazelbuild#7219)
  - Highlight TreeArtifact in aquery text output.
  - Locally-executed spawns tagged "no-cache" no longer upload their
    outputs to the remote cache.
  - java_common APIs now accept JavaToolchainInfo and JavaRuntimeInfo
    instead of configured targets for java_toolchain and java_runtime
  - cc_common.create_cc_toolchain_config_info is stable and available
    for production use
  - incompatible_use_toolchain_providers_in_java_common: pass
    JavaToolchainInfo and JavaRuntimeInfo providers to java_common
    APIs instead of configured targets
    (bazelbuild#7186)
  - --incompatible_strict_argument_ordering is enabled by default.
  - Bazel now supports reading cache hits from a repository cache,
    even if it doesn't have write access to the cache.
  - Adding arm64e to OSX CROSSTOOL.
  - Ignore package-level licenses on config_setting.
  - Add an optional output_source_jar parameter to java_common.compile
  - --incompatible_disable_objc_provider_resources is now enabled by
    default. This disables ObjcProvider's fields related to resource
    processing.
  - Explicitly set https.protocols and exclude TLSv1.3.
  - Bazel now validates that JAVA_HOME points to a valid JDK and
    falls back to auto-detection by looking up the path of `javac`.
  - Upgrade the embedded JDK version to 11.0.2.
  - Added --incompatible_disable_crosstool_file
    (bazelbuild#7320)
  - --incompatible_disable_objc_provider_resources is now enabled by
    default. This disables ObjcProvider's fields related to resource
    processing.
  - --incompatible_disable_tools_defaults_package has been flipped.
  - For tests that do not generate a test.xml, Bazel now uses a
    separate action to generate one; this results in minor
    differences in the generated test.xml, and makes the generation
    more reliable overall.
  - incompatible_generate_javacommon_source_jar: java_common.compile
    now always generates a source jar, see
    bazelbuild#5824.
  - New incompatible flag
    --incompatible_disallow_struct_provider_syntax removes the
    ability for rule implementation functions to return struct. Such
    functions should return a list of providers instead. Migration
    tracking: bazelbuild#7347

This release contains contributions from many people at Google, as well as Benjamin Peterson, Ed Schouten, erenon, George Gensure, Greg Estren, Igal Tabachnik, Ittai Zeidman, Jannis Andrija Schnitzer, John Millikin, Keith Smiley, Kelly Campbell, Max Vorobev, nicolov, Robin Nabel.
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