Comment 1 for bug 1910408

I had similar issues with a recent update that modified PRETTY_NAME in os-release. The format of the file is a list of environment-like shell-compatible variable assignments. The value of PRETTY_NAME after being modified was not double-quoted but included spaces which is not compatible with that format. This prevented certain packages from being configured properly during installation and temporarily broke an image I was working with:

PRETTY_NAME=TEST_20210106 customized using Cubic on {date}

until I fixed the value:

PRETTY_NAME="TEST_20210106 customized using Cubic on {date}"

The package was able to successfully install with a properly-formatted value.