Provide more helpful error message when name: is missing from pubspec

[sethladd]

name: is now a required top-level field in the pubspec.yaml file.

Suggest making a more helpful error message when name: is missing.

Perhaps:

"Missing a required top-level name: key in the [path to file] pubspec"

[nex3]

Why is that more helpful than '"[path to file]" must contain a "name" key'? It looks like it's just a re-ordering of the sentence without adding any new information.

It would help if I knew what Shannon found unclear about the error message.

[sethladd]

Removed Priority-Medium label.
Added Priority-Low label.

[DartBot]

This comment was originally written by jjinux...@google.com

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The problem was that I didn't know what a '"name" key' was. "Key" can have so many meanings, so that didn't help matters. I kept trying to figure out how my pubspec.yaml file could have broken since I didn't change it--i.e. it wasn't clear to me that this was a new requirement. I definitely had no clue how to resolve the situation. For instance, it'd be great if it told me to add a line to the pubspec.yaml file like "name: the-name-of-your-project". Also, searching the documentation and Googling for this error didn't help, although I'm guessing those two problems will be taken care of very quickly ;)

[nex3]

Added Fixed label.

[nex3]

Fixed by r11643.

[DartBot]

This issue has been moved to dart-lang/pub#78.