activate: clean up references to built configs

There's no reason to keep these around after updating the profile, and
relying on the tmpfile cleaner to get them means it could be ages
before they can be garbage-collected.

1 files changed, 3 insertions, 1 deletions

diff --git a/activate b/activate
index f5d4b0997ff0..a1bd8a1e08ba 100755
--- a/activate
+++ b/activate
@@ -23,8 +23,10 @@ else
 fi
 
 export NIX_PATH=nixos-config=$d/sys/$sys.nix:$d
-link="$(mktemp -d)/result"
+linkdir="$(mktemp -d)"
+link="$linkdir/result"
 nix build -f '<nixpkgs/nixos>' --out-link "$link" "$@" system
 path="$(readlink "$link")"
 nix-env -p /nix/var/nix/profiles/system --set "$path"
+rm -rf "$linkdir"
 exec "$path/bin/switch-to-configuration" switch