Hi @chrisdone -- I was using optparse-simple to show the git hash when running LH, but somehow after updating to GHC 8.6.4 this stopped working. I've made a minimal example
at this repo:

https://github.com/ranjitjhala/hash-test

If you clone and build, you get the following:

rjhala@borscht ~/t/hash-test (master)> stack build --fast
...
rjhala@borscht ~/t/hash-test (master)> stack exec -- htest 0
Version 0.1.0.0, Git revision 5bbb05f54b8a2500ee2f32d96d443c5621c778f5 (dirty)
rjhala@borscht ~/t/hash-test (master)> stack exec -- htest 10
Version 0.1.0.0

The only difference between the two, is that:

1. the first one is a modification of your code from simpleVersion that uses $$tGitInfoCwd (instead of $$tGitInfoCwdTry);
2. the second one directly uses simpleVersion from Options.Applicative.Simple.

Any idea what may be going on?

Thanks!