checksum mismatch w/ package that normalizes newlines via .gitattributes

[iffy]

Installing msgpack4nim on Windows versus Linux/macOS yields a different hash for the nimble lock file. I think it's because of https://github.com/jangko/msgpack4nim/blob/master/.gitattributes#L1 which the comment suggests changes line endings for all files on git checkout.

I have verified with a custom verbose version of nimble that the contents of every file are different.

I'm not sure what the solution is.