Failing to build with dependencies installed

[du82]

du@newnovo:~/Desktop/Cubyz-master$ ./run_linux.sh 
Detecting Zig compiler...
Zig compiler is valid.
Building Zig Cubyz (-Doptimize=ReleaseFast) from source. This may take a few minutes...
install
└─ install Cubyzig
   └─ zig build-exe Cubyzig ReleaseFast native failure
error: error: unable to find dynamic system library 'x11' using strategy 'paths_first'. searched paths:
  /usr/local/lib64/libx11.so
  /usr/local/lib64/libx11.a
  /usr/local/lib/libx11.so
  /usr/local/lib/libx11.a
  /usr/lib/x86_64-linux-gnu/libx11.so
  /usr/lib/x86_64-linux-gnu/libx11.a
  /lib64/libx11.so
  /lib64/libx11.a
  /lib/libx11.so
  /lib/libx11.a
  /usr/lib64/libx11.so
  /usr/lib64/libx11.a
  /usr/lib/libx11.so
  /usr/lib/libx11.a
  /lib/x86_64-linux-gnu/libx11.so
  /lib/x86_64-linux-gnu/libx11.a

error: the following command exited with error code 1:
/home/du/Desktop/Cubyz-master/compiler/zig/zig build-exe /home/du/.cache/zig/p/1220234373ac197e8dad7a2d1beeb81619a6112e44dba6b2672af9a38fb01a16eef8/lib/libcubyz_deps_x86_64-linux-musl.a -lasound -lx11 -lGL -OReleaseFast -I /home/du/.cache/zig/p/1220f83952166e8649c95fdbc3585c7fc8cc2d0de878c26feec2d4b0277cc0c86106/include --dep gui --dep server -Mroot=/home/du/Desktop/Cubyz-master/src/main.zig -OReleaseFast -Mgui=/home/du/Desktop/Cubyz-master/src/gui/gui.zig -OReleaseFast -Mserver=/home/du/Desktop/Cubyz-master/src/server/server.zig -lc++ -lc --cache-dir /home/du/Desktop/Cubyz-master/.zig-cache --global-cache-dir /home/du/.cache/zig --name Cubyzig --zig-lib-dir compiler/zig/lib/ --listen=- 
Build Summary: 0/3 steps succeeded; 1 failed
install transitive failure
└─ install Cubyzig transitive failure
   └─ zig build-exe Cubyzig ReleaseFast native failure
error: the following build command failed with exit code 1:
/home/du/Desktop/Cubyz-master/.zig-cache/o/5937b04c16c45e6160c09a7493d0d2e0/build /home/du/Desktop/Cubyz-master/compiler/zig/zig compiler/zig/lib /home/du/Desktop/Cubyz-master /home/du/Desktop/Cubyz-master/.zig-cache /home/du/.cache/zig --seed 0x6463c908 -Z88e0a2a6b2b44e89 -Doptimize=ReleaseFast
Press enter key to continue. (Or export NO_PAUSE=1 to skip this prompt.)

[IntegratedQuantum]

How did you install the dependencies?

[du82]

with the command in the readme

[IntegratedQuantum]

Can you show me the output of that command?
Also what linux distribution do you use?

[du82]

That is the output, and I use the latest stable release of KDE Neon

[IntegratedQuantum]

I mean the output of the install command.

[IntegratedQuantum]

Either way it looks like x11 is missing, are you using wayland? (Wayland is currently not supported by Cubyz: #358).

[du82]

Thats odd, I've played Cubyz on this same machine just last week, and the machine hasn't been updated between then and now

[IntegratedQuantum]

That's even more weird. I also didn't change anything with regards to the build system, and I didn't update Zig either.
Could you try removing and reinstalling the packages maybe?