The "is already installed and configured" is a long-standing dpkg bug;
at least #1635280 references it, among many duplicates.
Thanks
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https://bugs.launchpad.net/bugs/1637397
Title:
Hi - The following error message suggests that ecryptfs-utils is already
installed:
package ecryptfs-utils is already installed and configured
If you're experiencing any issues, other than seeing this error message,
please move the bug status to New and explain what symptoms you're
seeing.