We use nfpm for creating Debian packages. In our nfpm.yaml file we make use of glob patterns for files. In the following example we copy all artifacts from a to /tmp/a and from b to /tmp/b:

files:
  "./a/**/*": "/tmp/a/"
  "./b/**/*": "/tmp/b/"

nfpm does not work as expected when the directories a or b only contain a single file (e.g. ./a/test.txt). In this case nfpm creates a deb package that contains the content of ./a/test.txt as a file at the path /tmp/a. Instead we expect ./a/test.txt to be packaged as file at the path /tmp/a/test.txt.

For our use cases this fix is kind of important and the only work-around right now is to make sure that there are always at least two files below a and b.