On Mon, Feb 3, 2025 at 5:16 PM Loren M. Lang <lor...@north-winds.org> wrote:
> Basically, I want to identify any software that I couldn't reinstall on
> a fresh install of Debian from the official Debian archives.

Will this work as a starting place for you?

comm -23 <(dpkg-query -W -f '${Package} ${Version}\n' | sort -u)
<(apt-cache dumpavail | awk '/^Package:/ {package = $NF} /^Version:/
{version = $NF} /^$/ {print package, version}' | sort -u)

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