Don't try to build stage1 with -eventlog if stage0 doesn't provide it
Like -threaded, stage0 isn't guaranteed to have an event-logging RTS.
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are either individually buildable or squashed -
have commit messages which describe what they do (referring to [Notes][notes] and tickets using #NNNNsyntax when appropriate) -
have added source comments describing your change. For larger changes you likely should add a [Note][notes] and cross-reference it from the relevant places. -
add a testcase to the testsuite. -
if your MR affects library interfaces (e.g. changes base) or affects whether GHC will accept user-written code, please add the ~"user facing" label. -
updates the users guide if applicable -
mentions new features in the release notes for the next release