lyrathorpe/home/shell.nix

@@ -126,15 +126,14 @@
   programs.nix-index.enable = true;
   programs.nix-index-database.comma.enable = true;
 
-  # Nicer nixos-rebuild/home-manager (diffs) + a weekly user-GC timer.
+  # Nicer nixos-rebuild/home-manager (diffs) + $NH_FLAKE. No automatic clean:
+  # the scheduled GC's only benefit is reclaiming disk, but it can reap store
+  # paths the current generation still references (notably on nix-darwin, where
+  # it broke completion by removing an in-use oh-my-zsh). GC manually instead:
+  # `nh clean all` / `nix-collect-garbage -d` when nothing important is running.
   programs.nh = {
     enable = true;
     flake = "$HOME/code/nixfiles";
-    clean = {
-      enable = true;
-      dates = "weekly";
-      extraArgs = "--keep 5 --keep-since 3d";
-    };
   };
 
   programs.tmux = {
@@ -260,10 +259,10 @@
   services.ssh-agent.enable = lib.mkIf pkgs.stdenv.hostPlatform.isLinux true;
 
   # Drop the zsh completion dump on every activation. A stale ~/.zcompdump
-  # caches /nix/store paths to completion functions; once a rebuild or GC (the
-  # weekly nh clean) removes them, compinit fails with "_git: function
-  # definition file not found" for every completion. Deleting it forces a fresh
-  # rebuild from the current fpath on the next shell.
+  # caches /nix/store paths to completion functions; once a rebuild or a manual
+  # GC removes them, compinit fails with "_git: function definition file not
+  # found" for every completion. Deleting it forces a fresh rebuild from the
+  # current fpath on the next shell.
   home.activation.resetZcompdump = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
     $DRY_RUN_CMD rm -f "$HOME"/.zcompdump* "''${XDG_CACHE_HOME:-$HOME/.cache}"/zsh/.zcompdump* 2>/dev/null || true
   '';