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9.0.0-pre.20250210.1

Release 9.0.0-pre.20250210.1 (2025-02-19)
@a-googler a-googler tagged this 19 Feb 17:44 
Baseline: f6cb2fb25c1deee9776eda976be151c598597b35

Incompatible changes:

  - Constraints and toolchain requirements added to the default exec
    group, for example via the toolchains parameter of the rule
    function or the exec_compatible_with attribute on all rules, no
    longer apply to the test exec group, which contains the test
    action on test rules. Instead, use exec_group_compatible_with to
    apply constraints and/or define an explicit test exec group with
    toolchain requirements on test rules that require it.

Important changes:

  - The new exec_group_compatible_with attribute on all rules accepts
    a dictionary mapping exec group names to lists of additional
    constraints to request from the exec group's execution platform.
  - Removes the `--incompatible_enable_cc_test_feature` flag.  The
    functionality this was intended for was never completed, and is
    no longer needed.
  - Added `repository_ctx.original_name`, which contains the original
    value of the `name` attribute as specified at the repo rule call
    site.
  - The new `no_match_error` attribute on `toolchain_type` can be
    used to show a custom message when no matching toolchain is found
    for that type, but one is required.
  - Adds `ctx.rule.var` to allow aspects to get rule-specific
    variables, and removes rule-specific variables from an aspect's
    `ctx.var` dict.
  - LCOV parsing does not break on FN lines including an end line
    number.

This release contains contributions from many people at Google, as well as Benjamin Peterson, dependabot[bot], Fabian Meumertzheim, Jordan Mele, Jordan Mele, Keith Smiley, Spencer Putt.
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