[dev] pertag + galpessgrid patch together

I wonder how to applay pertag patch and gaplessgrid together. When I apply pertag on clean hg sources it works fine, but
if I try to apply gaplessgrid or some other layout patch (bstack. nmaster) I have this error:

dwm build options:
CFLAGS = -std=c99 -pedantic -Wall -Os -I. -I/usr/include -I/usr/include/X11 -DVERSION="5.8" -DXINERAMA
CC dwm.c
LDFLAGS = -s -L/usr/lib -lc -L/usr/lib/X11 -lX11 -L/usr/lib/X11 -lXinerama
CC = cc
In file included from config.h:36,
                 from dwm.c:255:
                 gaplessgrid.c: In function ‘gaplessgrid’:
                 gaplessgrid.c:6: error: dereferencing pointer to incomplete type
                 gaplessgrid.c:20: error: dereferencing pointer to incomplete type
                 gaplessgrid.c:20: error: dereferencing pointer to incomplete type
                 gaplessgrid.c:23: error: dereferencing pointer to incomplete type
                 gaplessgrid.c:26: error: dereferencing pointer to incomplete type
                 gaplessgrid.c:26: error: dereferencing pointer to incomplete type
                 gaplessgrid.c:27: error: dereferencing pointer to incomplete type
                 gaplessgrid.c:28: error: dereferencing pointer to incomplete type
                 make: *** [dwm.o] Błąd 1

Could you please help me to find solution
Regards,
dziq