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   1 # Nix Profile GC
   2
   3 Clean up old profiles more carefully than `nix-collect-garbage --delete-older-than`
   4
   5 This module removes most old profiles, but makes sure to keep around the last few profiles that
   6 served this machine well -- profiles this machine ran on for a (configurable) time -- even if
   7 they're old.
   8
   9 This is a NixOS Module rather than a stand-alone tool because it determines which extra profiles
  10 need preserving by periodically logging the currently-active profiles.
  11
  12 See also: [Announcement](https://scottworley.com/blog/2023-05-19-nix-profile-gc.html)