Download Latest Version v1.19.3 source code.zip (7.1 MB) Google Add to Preferred Sources
Home / v1.19.3
Name Modified Size InfoDownloads / Week
Parent folder
README.md 2026-10-28 1.9 kB
v1.19.3 source code.tar.gz 2026-10-28 6.3 MB
v1.19.3 source code.zip 2026-10-28 7.1 MB
recover-brew-upgrade.sh 2026-10-28 7.3 kB
Totals: 4 Items   13.4 MB 0

This release fixes brew upgrade flox failing on macOS with "An existing package already provides the following file". The error appeared when upgrading a Homebrew install of Flox for the second time or later, and leaves the system without /nix mounted after a reboot.

[!IMPORTANT] If Flox reached 1.19.1 or 1.19.2 on your Mac through brew upgrade, a plain brew upgrade flox to 1.19.3 will still fail, because Homebrew runs the old release's uninstall script first. Run the recovery script included below instead; it repairs the installation and upgrades Flox to 1.19.3. The script uses sudo but shouldn't be run as root, since brew refuses to run as root.

sh curl -fsSL https://github.com/flox/flox/releases/download/v1.19.3/recover-brew-upgrade.sh | sh

Other Fixes

  • Upgrading Flox on Debian and Ubuntu now restarts nix-daemon with its updated configuration.
  • apt remove flox now removes the nixbld users and group on Debian and Ubuntu.

[!NOTE] You can find the SHA256 checksums for Flox 1.19.3 and SHA512 checksums for Flox 1.19.3 online.

Source: README.md, updated 2026-10-28