Re: [PATCH v2 0/1] Define GIT_TEST_COMMIT_GRAPH for commit-graph test coverage

> On Wed, Aug 29, 2018 at 2:49 PM Derrick Stolee via GitGitGadget
> <gitgitgadget@gmail.com> wrote:
>> The commit-graph (and multi-pack-index) features are optional data
>> structures that can make Git operations faster. Since they are optional, we
>> do not enable them in most Git tests. The commit-graph is tested in
>> t5318-commit-graph.sh (and t6600-test-reach.sh in ds/reachable), but that
>> one script cannot cover the data shapes present in the rest of the test
>> suite.
>>
>> This patch introduces a new test environment variable, GIT_TEST_COMMIT_GRAPH
>> . Similar to GIT_TEST_SPLIT_INDEX, it enables the commit-graph and writes it
>> with every git commit command. Thanks, Duy, for pointing out this direction
>> [1].
> Any reason to not add this new flag in ci/run-build-and-tests.sh
> (which is used by Travis)? I see your note about VSTS but I don't see
> why it has to be exclusive to VSTS.