{ runCommandCC }: runCommandCC "io_uring-is-blocked" { } '' cat > test.c <<EOF #include <errno.h> #include <sys/syscall.h> #include <unistd.h> int main() { int res = syscall(SYS_io_uring_setup, 0, NULL); return res == -1 && errno == ENOSYS ? 0 : 1; } EOF "$CC" -o test test.c if ! ./test; then echo "Oh no! io_uring is available!" exit 1 fi touch "$out" ''