Since version 257 (NixOS 25.05), systemd-nspawn automatically creates a /dev/fuse node in the container when the host's FUSE node is accessible to the nspawn process: https://github.com/systemd/systemd/pull/34067
Since version 257 (NixOS 25.05), systemd-nspawn automatically creates a /dev/fuse node in the container when the host's FUSE node is accessible to the nspawn process: https://github.com/systemd/systemd/pull/34067