A program importing both gg and a module that vendors stb_truetype does not build

v 0.5.2 ee46dc3  (Windows, tcc/gcc)

vtext, a text-shaping library outside this repo, vendors stb_truetype.h from thirdparty/fontstash with STB_TRUETYPE_IMPLEMENTATION and STBTT_STATIC, so that linking it beside gg does not produce two copies of every stbtt_ symbol. vlib/fontstash includes the same header from the same path, with the same two macros.

A 25-line program that opens a gg window and calls into that module fails with 453 errors:

thirdparty/fontstash/stb_truetype.h:1133:20: error: redefinition of 'stbtt__buf_get8'
thirdparty/fontstash/stb_truetype.h:1140:20: error: redefinition of 'stbtt__buf_peek8'
thirdparty/fontstash/stb_truetype.h:1147:13: error: redefinition of 'stbtt__buf_seek'
thirdparty/fontstash/stb_truetype.h:1153:13: error: redefinition of 'stbtt__buf_skip'
thirdparty/fontstash/stb_truetype.h:1158:21: error: redefinition of 'stbtt__buf_get'

stb_truetype.h:502 turns STBTT_STATIC into #define STBTT_DEF static, so both inclusions emit static int stbtt__buf_get8(...). The error itself shows why STBTT_STATIC no longer prevents this: redefinition in one translation unit is a compile error, whereas the same name defined static in two different translation units is not. When V emitted one CU per module the macro was sufficient; now both definitions land in one CU and collide inside it.

module main

import gg
import vtext

fn main() {
	ctx := vtext.new_context()
	_ = ctx
	mut w := gg.new_context(width: 200, height: 120, create_window: true,
		window_title: 'x', frame_fn: frame)
	w.run()
}
fn frame(mut c gg.Context) {}

Two things I checked rather than assumed, in case they change the shape of this: both thirdparty/fontstash/fontstash.h (lines 289-296) and the library's stbtt.c.v (lines 21-23) set the macro, so neither is a stray copy; and the failure is the same whether vtext is imported first or second, and with either tcc or gcc.

I could not find an existing report — searching for stbtt__buf_get8 redefinition and gg vtext stb_truetype turned up nothing, but I may have the wrong terms, so apologies if this is a duplicate.