[BUG] Dotter depends on configuration too much when undeploying

[SuperCuber]

Reproduction

• Deploy with symlink a -> b.
• Remove the file a
• Run an undeploy

Expected behavior

b should be deleted

Actual behavior

[ERROR] Failed to undeploy
Caused by:
    get a configuration
    expand files that are directories
    expand file "a"
    read file's metadata
    The system cannot find the file specified. (os error 2)

[poperigby]

I think I'm running into this issue. I deleted a directory in the dotter repo, and now it's giving me a bunch of these errors:

[ERROR] Failed to delete symlink "ranger/plugins/devicons2/screenshot.png" -> "/home/cassidy/.config/ranger/plugins/devicons2/screenshot.png"
Caused by:
    detect symlink's current state
    get real path of source
    No such file or directory (os error 2)

[Diomendius]

I've opened a PR which should fix your issue, @lumbo7332. It doesn't quite tackle the core problem of this issue, which seems to be that Dotter config entries which point to nonexistent files cause hard errors rather than warnings, but if you delete a file or directory and remove the corresponding config entries, Dotter should no longer crash because the still-existing symlinks are broken.

[CanRau]

I think this could be closed as #87 has been merged, correct?

[SuperCuber]

@CanRau IIRC the fix only works for one of the platforms. I need to revisit this 🙃