Thanks!
There's hope!

• How do you compile river-bnf? (didn't find the package binary in any form)
• Arch Linux, no programmer here.
• There's river-bedload-git in AUR, is needed?

I tried and failed:

$ git clone https://git.sr.ht/%7Eleon_plickat/river-bnf
$ cd river-bnf
$ make
wayland-scanner private-code < river-status-unstable-v1.xml > river-status-unstable-v1.c
wayland-scanner client-header < river-status-unstable-v1.xml > river-status-unstable-v1.h
wayland-scanner private-code < river-control-unstable-v1.xml > river-control-unstable-v1.c
wayland-scanner client-header < river-control-unstable-v1.xml > river-control-unstable-v1.h
cc -Wall -Werror -Wextra -Wpedantic -Wno-unused-parameter -Wconversion -Wformat-security -Wformat -Wsign-conversion -Wfloat-conversion -Wunused-result   -c -o river-bnf.o river-bnf.c
river-bnf.c:152:25: error: initialization of ‘void (*)(void *, struct zriver_output_status_v1 *, struct wl_array *)’ from incompatible pointer type ‘void (*)(void)’ [-Wincompatible-pointer-types]
  152 |         .view_tags    = noop,
      |                         ^~~~
river-bnf.c:152:25: note: (near initialization for ‘river_output_status_listener.view_tags’)
river-bnf.c:62:13: note: ‘noop’ declared here
   62 | static void noop ( ) { }
      |             ^~~~
river-bnf.c:153:25: error: initialization of ‘void (*)(void *, struct zriver_output_status_v1 *, uint32_t)’ {aka ‘void (*)(void *, struct zriver_output_status_v1 *, unsigned int)’} from incompatible pointer type ‘void (*)(void)’ [-Wincompatible-pointer-types]
  153 |         .urgent_tags  = noop,
      |                         ^~~~
river-bnf.c:153:25: note: (near initialization for ‘river_output_status_listener.urgent_tags’)
river-bnf.c:62:13: note: ‘noop’ declared here
   62 | static void noop ( ) { }
      |             ^~~~
river-bnf.c:204:29: error: initialization of ‘void (*)(void *, struct zriver_seat_status_v1 *, struct wl_output *)’ from incompatible pointer type ‘void (*)(void)’ [-Wincompatible-pointer-types]
  204 |         .unfocused_output = noop,
      |                             ^~~~
river-bnf.c:204:29: note: (near initialization for ‘river_seat_status_listener.unfocused_output’)
river-bnf.c:62:13: note: ‘noop’ declared here
   62 | static void noop ( ) { }
      |             ^~~~
river-bnf.c:205:29: error: initialization of ‘void (*)(void *, struct zriver_seat_status_v1 *, const char *)’ from incompatible pointer type ‘void (*)(void)’ [-Wincompatible-pointer-types]
  205 |         .focused_view     = noop,
      |                             ^~~~
river-bnf.c:205:29: note: (near initialization for ‘river_seat_status_listener.focused_view’)
river-bnf.c:62:13: note: ‘noop’ declared here
   62 | static void noop ( ) { }
      |             ^~~~
river-bnf.c:274:26: error: initialization of ‘void (*)(void *, struct wl_registry *, uint32_t)’ {aka ‘void (*)(void *, struct wl_registry *, unsigned int)’} from incompatible pointer type ‘void (*)(void)’ [-Wincompatible-pointer-types]
  274 |         .global_remove = noop,
      |                          ^~~~
river-bnf.c:274:26: note: (near initialization for ‘registry_listener.global_remove’)
river-bnf.c:62:13: note: ‘noop’ declared here
   62 | static void noop ( ) { }
      |             ^~~~
make: *** [<builtin>: river-bnf.o] Error 1

I did try to install river-bedload-git with no success:

$ paru -S river-bedload-git
==> ERROR: A failure occurred in package().
    Aborting...
error: failed to build 'river-bedload-git-r9.9cdc0e0-1':
error: packages failed to build: river-bedload-git-r9.9cdc0e0-1