If diff is not installed on the host and PATH is not configured for the action to find it then the test fails. Ideally there would be some diff_test_toolchain rule that would allow users to register either Label or a custom string to where diff might be found. If this were implemented with toolchains, the diff_test rule could optionally depend on it and fallback to using diff just as it does today.
If
diffis not installed on the host andPATHis not configured for the action to find it then the test fails. Ideally there would be somediff_test_toolchainrule that would allow users to register either Label or a custom string to wherediffmight be found. If this were implemented with toolchains, thediff_testrule could optionally depend on it and fallback to usingdiffjust as it does today.