On Sat, Feb 24, 2018 at 5:29 AM, brian m. carlson
<sand...@crustytoothpaste.net> wrote:
>> @@ -40,5 +41,8 @@ int main(int argc, const char **argv)
>>       restore_sigpipe_to_default();
>> +     if (getenv("GIT_HASH_FIXUP"))
>> +             repo_set_hash_algo(the_repository, GIT_HASH_SHA1);
> I'm lukewarm on adding this environment variable, but considering our
> history here, we had probably better.  We can always remove it after a
> few releases.

Yes that's the intention. But after writing cover letter for v2 and
sending it out, it looks to me that this thing must stay until all our
code is converted to using the_hash_algo (I don't know if there are
more to convert or it's finished already). So an alternative is we do
the opposite: default to GIT_HASH_SHA1, but when an env variable is
set, reset it back to NULL. This env variable will _always_ be set by
the test suite to help us catch problems.

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