pkg010 test output depends on version of optparse-applicative library used

[bavier]

The expected output for test pkg010 requires optparse-applicative >= 0.15.1.0. Using, e.g., the optparse-applicative 0.14.3.0 that is part of stackage's LTS 14.27 causes the test to fail. In commit 9662ab5 the expected output of the test was adjusted to account for the change in standard "Usage: ..." output emitted by optparse-applicative from version 0.14.3.0 to 0.15.1.0.

Could the test be adjusted in some way to not depend on what seems to be an implementation detail?