does not work with poetry 1.0.0b1

[jasonkuhrt]

Apps have started to fail at deploy with error like:

  ENOENT: no such file or directory, link '/Users/jasonkuhrt/projects/dialoguemd/beautiful-mind/mattermost-posts-consumer/requirements.txt' -> '/Users/jasonkuhrt/projects/dialoguemd/beautiful-mind/mattermost-posts-consumer/.serverless/requirements.txt'

Reason we found was that poetry had been upgraded to latest preview version, 1.0.0b1. Rolling poetry back to 1.0.0a5 resolved the issue. Creating issue here but it may be that it belongs on poetry side.

[mokamoto12]

The default behavior of the poetry export has changed.
If the -o option is not specified, the contents are printed to standard output.

This problem will be fixed in #395

[tpansino]

@jasonkuhrt have you verified that the fix in #395 fixes your issue? I still see this happening when I run with master installed.

I'm not very skilled at Javascript, but having worked on this section of code in the last month on #390, I think the real root-cause is this line. It seems that the poetry export this code runs dumps the file in whatever the current directory is, then attempts to move it into .serverless, but without the { "overwrite": true } parameter dict passed to this moveSync method it fails silently when the destination file already exists.

I've tested this override and it seems to work as a fix. Someone tell me if my assumptions are wrong here, otherwise I'll open a PR for this fix.

[tpansino]

Also, just to mention, the best way I've found to reproduce this issue is to serverless deploy, twice. The first time creates the file and the second time causes the conflict where it can't be overwritten. Removing the two files mentioned in the error always fixes the problem, as does adding the overwrite flag as I have done in my PR.

[bsamuel-ui]

Closed as #395 is merged. Happy to reopen if there are still issues.