Fix compression format error when installing J

When installing J9.7 on macOS Sequoia 15.7.3, I unpack the ZIP release in my home directory under ~/Applications/Free. After unpacking the contents, I end up with these files: $ unzip $HOME/Downloads/j9.7_mac64.zip […] $ tree -L1 j9.7/ j9.7/ ├── addons ├── bin ├── jbrk.app ├── jcon.app ├── jhs.app ├── jqt.app ├── macos-fix.command ├── readme.txt ├── system ├── tools ├── updateje.sh └── updatejqt.sh 9 directories, 4 files The updatejqt.sh should install JQt for me but you'll see it fail with a mysterious tar error here: $ cd j9.7 ~/A/F/j9.7$./updatejqt.sh Updating server catalog... Installing 1 package Downloading base library... Installing base library... Done. Installing JQt slim binaries... gzip: unknown compression format tar: Child returned status 1 tar: Error is not recoverable: exiting now Finished install of JQt slim binaries. Installing Qt library... Finished install of Qt library. My instinct tells me that this is because I use Nix coreutils on my system through nix-darwin.…