Default LEFT to /run/current-system

truncated names: perhaps assumes a fixed store prefix length?

`__contentAddressed` support

nix-diff seems to prepend 'daemon' before paths to the nix store

Improve compatibility with `less -R`

Parse version numbers for better diffs

Consider `myers-diff` package

Build fails on nixos-unstable

Configuration setup issue when trying to build

Shorten trees consisting only of “These two derivations have already been compared” as the leafs.