yotta should warn / error if you do yt install before yt target

[janjongboom]

Today was setting up a new project, so I do yt init, add the mbed-drivers dependency and hit yt install. Then this shows up:

info: dependency mbed-drivers is already present in module.json
info: get versions for minar-platform-posix
error: Failed to satisfy dependencies of /Users/janjon01/repos/juggling/firmware/yotta_modules/minar-platform:
error: minar-platform-posix does not exist in the modules registry. Check that the name is correct, and that it has been published.

Uhhhmmm... So? Apparently I need to do yt target first, which makes sense but yotta should tell me that!

[autopulated]

👍

I'm thinking something along the lines of:

"warning: you haven't selected a build target yet, so the default for this platform of XXXX is being used (which may not be what you want). For information on setting the build target see https://useful-link-to-some-docs"