mutability

| spa_callbacks_call_res(&(iface)->cb,method_type,res,method,vers,##__VA_ARGS__) | ^~~~~~~~~~~~~~~~~~~~~~ /nix/store/jd6h07kk8y8pxlha2gisrzfifpscm5kq-pipewire-1.2.7-dev/include/spa-0.2/spa/support/thread.h:77:9: note: in expansion of macro 'pw_core_method' 350 | #define pw_loop_add_signal(l,...) spa_loop_utils_add_signal((l)->utils,__VA_ARGS__) | ^~~~~~~~~~~~~~~~~~~~~~~~~ /nix/store/jd6h07kk8y8pxlha2gisrzfifpscm5kq-pipewire-1.2.7-dev/include/spa-0.2/spa/param/audio/wma-utils.h:26:15: note: in expansion of macro 'max' 255 | max_update_value = max(max_update_value, max(bars[bar], previous_frame[bar])); | ^~~ [43/229] Compiling C object subprojects/cava-0.10.2/libcava.so.p/src_output_sdl_glsl.c.o [55/229] Compiling C object protocol/libclient_protos.a.p/meson-generated_xdg-output-unstable-v1-protocol.c.o [49/229] Compiling C object subprojects/cava-0.10.2/libcava.so.p/src_config.c.o [14/229] Generating 'protocol/libclient_protos.a.p/idle-inhibit-unstable-v1-protocol.c' [15/229] Generating 'protocol/libclient_protos.a.p/xdg-output-unstable-v1-protocol.c' [16/229] Generating 'protocol/libclient_protos.a.p/ext-workspace-unstable-v1-protocol.c' [17/229] Generating