Assume verbosity as silent when invoked in interpreter mode

[harendra-kumar]

Please refer to #1394 for the original discussion.

• Currently stack prints some output of its own before running the script:

Run from outside a project, using implicit global project config
Using resolver: lts-3.14 from implicit global project's config file: /var/home/harendra/.stack/global-project/stack.yaml

When used as interpreter no other output is desirable other than the script's output itself. In fact this should hold true for any stack exec command. That might interfere with the processing of the script output.

We can fix this by assuming --verbosity silent when invoked as interpreter.

[mgsloan]

Yup, makes sense to me! Thanks for opening an issue

[sjakobi]

This just bit me, when I tried to do some simple timings with a script and see what stack internally does.

I ended up running stack -v runghc script.hs but I'm not entirely sure it does the same thing.

Wouldn't it be enough to have --verbosity silent as a default for the interpreter mode but make it overrideable?

[harendra-kumar]

I am closing this. Let's keep track of fixing the override issue in #2343.