The easiest is probably to stick with /usr/bin/env bash and call awk in the bash script ;)

(you probably lose proper syntax highlight but you’re sure that it works for everyone :p )

ovsdb-server 
2025-12-20T07:09:09Z|00001|lockfile|WARN|/nix/store/rgvgspp0pzpq4xvcwfdjvh4qshwpd02y-openvswitch-3.6.1/etc/openvswitch/.conf.db.~lock~: failed to open lock file: Read-only file system
2025-12-20T07:09:09Z|00002|lockfile|WARN|/nix/store/rgvgspp0pzpq4xvcwfdjvh4qshwpd02y-openvswitch-3.6.1/etc/openvswitch/.conf.db.~lock~: failed to lock file: Read-only file system
2025-12-20T07:09:09Z|00003|ovsdb_server|WARN|failed to open database '/nix/store/rgvgspp0pzpq4xvcwfdjvh4qshwpd02y-openvswitch-3.6.1/etc/openvswitch/conf.db': I/O error: /nix/store/rgvgspp0pzpq4xvcwfdjvh4qshwpd02y-openvswitch-3.6.1/etc/openvswitch/conf.db: failed to lock lockfile (Read-only file system)
2025-12-20T07:09:09Z|00004|ovsdb_server|WARN|failed to configure databases
ovsdb-server: server configuration failed