anchor.diff:      xorg.libXcursor
       xorg.libXi
       xorg.libXrandr
  +
  +    # Linker
  +    lld
   
       # SPIR-V shader compiler
       shaderc
  
positive.code: 
  let
    log_level = "info";
  in stdenv.mkDerivation {
    name = "rust-env";
    buildInputs = [
      rustup
  
negative.code:   '';
  
    # Set Environment Variables
  
    # Useful backtraces
    RUST_BACKTRACE = 1;
    # Better linking
    RUSTFLAGS = "-C link-arg=-fuse-ld=lld";
    # Activate logging, but from local crates only.
    RUST_LOG = "calx-ecs=${log_level},vitral=${log_level},calx=${log_level},display=${log_level},world=${log_level},magog=${log_level}";
  
  }
  