I've also tried disablling LTO for this package, but it doesn't seem to work. I'll give the full log file since wl-copy doesn't seem to want to copy the file.
Also, I've tried doing MAKEOPTS="-j1" but for some reason, that does nothing, since I can still see -j8 in some parts of the log. Any clue? 
#dev-lang/zig fails to build
delicate relic
* ERROR: dev-lang/zig-0.14.0::gentoo failed (compile phase):
* ZBS: compilation failed
*
* Call stack:
* ebuild.sh, line 136: Called src_compile
* environment, line 3036: Called zig_src_compile '--prefix' 'stage3/'
* environment, line 4850: Called die
* The specific snippet of code:
* DESTDIR="${BUILD_DIR}" nonfatal ezig build "${args[@]}" || die "ZBS: compilation failed";
*
* If you need support, post the output of `emerge --info '=dev-lang/zig-0.14.0::gentoo'`,
* the complete build log and the output of `emerge -pqv '=dev-lang/zig-0.14.0::gentoo'`.
* The complete build log is located at '/var/tmp/portage/dev-lang/zig-0.14.0/temp/build.log'.
* The ebuild environment file is located at '/var/tmp/portage/dev-lang/zig-0.14.0/temp/environment'.
* Working directory: '/var/tmp/portage/dev-lang/zig-0.14.0/work/zig-0.14.0_build'
* S: '/var/tmp/portage/dev-lang/zig-0.14.0/work/zig-0.14.0'``` this is the error snippet btwand this is ~amd64
delicate relic
Solved? Kinda, my workaround was disabling llvm from its USE flags
delicate relic
absolutely not solved, river needs zig to be compiled with llvm so yeah
delicate relic
I'm trying out masking the current zig version and compiling 0.13... I'll keep you updated......
delicate relic
I don't know what the fuck happened but a zig binary appeared in my system and it compiled river successfuly
Is there a idfk what happened tag
marsh steppe
sharp chasm
/var/tmp/portage/dev-lang/zig-0.14.0/temp/environment: line 1571: 104 Segmentation fault (core dumped) "${ZIG_EXE}" "${@}"