anchor.diff:      "--sysconfdir=/etc"
       "--localstatedir=/var"
       "--enable-largefile"
  +    "--disable-pwr8-inst"  # power
       # slight performance degradation, enable only for grsec
       "--${boolEn grsecEnabled}-glx-rts"
       "--disable-debug"
  
positive.code:         + head (splitString "." version)
          + ".x/${version}/mesa-${version}.tar.xz")
      ];
      multihash = "QmNr8TiVtJjtcVcP5xoS7wzRdwQXHrx2ucGqgzpntMsx9b";
      hashOutput = false;  # Provided by upstream directly
      sha256 = "a95d7ce8f7bd5f88585e4be3144a341236d8c0fc91f6feaec59bb8ba3120e726";
    };
  
    nativeBuildInputs = [
  
negative.code:     "--disable-opencl-icd"
      "--disable-gallium-tests"
      "--enable-shared-glapi"
      "--enable-driglx-direct"
      "--enable-glx-tls"
      "--disable-glx-read-only-text"
      "--enable-gallium-llvm"
      "--disable-valgrind"
  
      #gl-lib-name=GL
      #osmesa-libname=OSMesa
      "--with-gallium-drivers=svga,i915,ilo,r300,r600,radeonsi,nouveau,freedreno,swrast"
      "--with-dri-driverdir=$(drivers)/lib/dri"
      "--with-dri-searchpath=${driverSearchPath}/lib/dri"
      "--with-dri-drivers=i915,i965,nouveau,radeon,r200,swrast"
  