Has anyone gotten Postgres to run in a sandboxed app? I am compiling Postgres 18 myself from source and have tried to patch it so it doesn't use sysv (shmem) but it apparently has all kinds of invocations of sysv and once it's sandboxed has issues, e.g.: 2026-02-24 18:26:05.014 EST [4384] FATAL: semctl(65596, 16, SETVAL, 536) failed: Operation not permitted Does anyone know of a way to either make the sandbox relax or make Postgres compatible with sandboxing? I have tried passing flags to initdb to use POSIX semaphores but it always wants to use sysv so I'm finding myself super deep in the weeds of the Postgres source code.