Malformed metadata breaks pkg-index

[sorawee]

If a package has collection being a byte string (e.g., #"hello"), the whole pkg-index will break.

I suppose the same applies for implies.

Another issue is that 'use-pkg-name is coerced into a package named "use-pkg-name". 'use-pkg-name probably should be handled in the same way as 'multi.

@samth

[samth]

Where in particular does it break? Do you have a stack trace?

[sorawee]

https://github.com/racket/pkg-index/blob/master/official/static.rkt#L23

But I don't think it's a good idea to even let the value flow there in the first place. The value was originally queried from https://github.com/racket/pkg-index/blob/master/official/update.rkt#L152, IIUC.