@@ -297,10 +297,17 @@ stdenv.mkDerivation rec {
297297 cp -u --no-preserve=mode,owner "$TBB_IN_STORE/TorBrowser/Data/Browser/profile.default/bookmarks.html" \
298298 "\$HOME/TorBrowser/Data/Browser/profile.default/bookmarks.html"
299299
300− # Clear out some files that tend to capture store references but are
301− # easily generated by firefox at startup.
302− rm -f "\$HOME/TorBrowser/Data/Browser/profile.default"/{addonStartup.json.lz4,compatibility.ini,extensions.ini,extensions.json}
303− rm -f "\$HOME/TorBrowser/Data/Browser/profile.default"/startupCache/*
300+ # Clear some files if the last known store path is different from the new one
301+ : "\''${KNOWN_STORE_PATH:=\$HOME/known-store-path}"
302+ if ! [ "\$KNOWN_STORE_PATH" -ef $out ]; then
303+ echo "Cleanup files with outdated store references"
304+ ln -Tsf $out "\$KNOWN_STORE_PATH"
305+
306+ # Clear out some files that tend to capture store references but are
307+ # easily generated by firefox at startup.
308+ rm -f "\$HOME/TorBrowser/Data/Browser/profile.default"/{addonStartup.json.lz4,compatibility.ini,extensions.ini,extensions.json}
309+ rm -f "\$HOME/TorBrowser/Data/Browser/profile.default"/startupCache/*
310+ fi
304311
305312 # XDG
306313 : "\''${XDG_RUNTIME_DIR:=/run/user/\$(id -u)}"