From 91ebb94be4b815d2cced79d049cf71a82e15f717 Mon Sep 17 00:00:00 2001
From: Keith Smiley <keithbsmiley@gmail.com>
Date: Fri, 11 Mar 2022 17:34:07 -0800
Subject: [PATCH] Add _lcov_merger attribute to test rules

As of bazel 5.1 this can be used as a late bound attribute https://github.com/bazelbuild/bazel/commit/14d8be0e8ec07aabb6c4497555f712dac5720a5f

This alleviates the concerns from
https://github.com/bazelbuild/rules_apple/pull/691 and allows users to
use this feature, and avoid having to pass `LCOV_MERGER` in the
environment manually
---
 apple/internal/rule_factory.bzl | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/apple/internal/rule_factory.bzl b/apple/internal/rule_factory.bzl
index db2caf6d4d..00c69585b6 100644
--- a/apple/internal/rule_factory.bzl
+++ b/apple/internal/rule_factory.bzl
@@ -175,6 +175,13 @@ AppleTestRunnerInfo provider.
         cfg = "exec",
         default = Label("@build_bazel_apple_support//tools:coverage_support"),
     ),
+    "_lcov_merger": attr.label(
+        default = configuration_field(
+            fragment = "coverage",
+            name = "output_generator",
+        ),
+        cfg = "exec",
+    ),
 }
 
 def _common_binary_linking_attrs(deps_cfg, product_type):