f2a91ec2b7
git-daemon won't start up if its project directory (here /git) doesn't exist. If we try to create it using the test harness, then we're racing whether we manage to connect to the backdoor vs. the startup speed of git-daemon. Instead, use systemd-tmpfiles, which is guaranteed(?) to run before network.target and thus before git-daemon.service starts.
*** NixOS *** NixOS is a Linux distribution based on the purely functional package management system Nix. More information can be found at https://nixos.org/nixos and in the manual in doc/manual.