feat: use tmpfiles.d for setup and temp dir#15
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With secureblue/homebrew#15, Homebrew setup uses tmpfiles.d instead of a systemd service unit to create the `/home/linuxbrew/.linuxbrew` directory. The `ujust set-brew` script needs to be changed to match.
* Replace `brew-setup.service` with tmpfiles.d configuration that copies `/usr/share/homebrew/.linuxbrew` to `/home/linuxbrew/.linuxbrew`. * Move Homebrew temporary directory to `/var/tmp/homebrew` and manage this directory with tmpfiles.d. This will make the Homebrew installation easier to sandbox in the future as it only needs access `/var/tmp/homebrew` instead of all of `/var/tmp`.
HastD
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With secureblue/homebrew#15, Homebrew setup uses tmpfiles.d instead of a systemd service unit to create the `/home/linuxbrew/.linuxbrew` directory. The `ujust set-brew` script needs to be changed to match. To ensure the Homebrew installation is *not* recreated for users who have opted out with `ujust set-brew off`, we override this tmpfiles.d config file by default by creating an empty `/etc/tmpfiles.d/homebrew.conf`, and add a systemd service `brew-setup-migration.service` that removes this override if the stamp `/etc/.linuxbrew` used by the old Homebrew setup method is present.
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brew-setup.servicewith tmpfiles.d configuration that copies/usr/share/homebrew/.linuxbrewto/home/linuxbrew/.linuxbrew./var/tmp/homebrewand manage this directory with tmpfiles.d. This will make the Homebrew installation easier to sandbox in the future as it only needs access/var/tmp/homebrewinstead of all of/var/tmp.Note, the change to Homebrew setup will require a corresponding change to the secureblue ujust script for disabling Homebrew.