source $stdenv/setup

dontPatchELF=1 # must keep libXv, $out in RPATH


unpackFile() {
    sh $src -x
}


buildPhase() {
    echo "Building linux driver against kernel: " $kernel;

    cd usr/src/nv/

    # Workaround: get it to build on kernels that have CONFIG_XEN set.
    # Disable the test, apply a patch to disable the Xen functionality.
    #substituteInPlace Makefile.kbuild --replace xen_sanity_check fnord
    #patch -p1 < $xenPatch

    # Create the module.
    kernelVersion=$(cd $kernel/lib/modules && ls)
    sysSrc=$(echo $kernel/lib/modules/$kernelVersion/build/)
    unset src # used by the nv makefile
    # Hack necessary to compile on 2.6.28.
    export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE -I$sysSrc/include/asm/mach-default"
    make SYSSRC=$sysSrc module
    cd ../../..
}


installPhase() {

    # Install the kernel module.
    ensureDir $out/lib/modules/$kernelVersion/misc
    cp usr/src/nv/nvidia.ko $out/lib/modules/$kernelVersion/misc

    # Install libGL and friends.
    cp -prd usr/lib/* usr/X11R6/lib/libXv* $out/lib/

    ln -snf libGLcore.so.$versionNumber $out/lib/libGLcore.so
    ln -snf libGLcore.so.$versionNumber $out/lib/libGLcore.so.1
    ln -snf libGL.so.$versionNumber $out/lib/libGL.so
    ln -snf libGL.so.$versionNumber $out/lib/libGL.so.1
    ln -snf libnvidia-cfg.so.$versionNumber $out/lib/libnvidia-cfg.so.1
    ln -snf libnvidia-tls.so.$versionNumber $out/lib/libnvidia-tls.so.1
    ln -snf libnvidia-tls.so.$versionNumber $out/lib/tls/libnvidia-tls.so.1
    ln -snf libXvMCNVIDIA.so.$versionNumber $out/lib/libXvMCNVIDIA_dynamic.so.1
    ln -snf libcuda.so.$versionNumber $out/lib/libcuda.so.1

    # Install the X driver.
    ensureDir $out/lib/xorg/modules
    cp -prd usr/X11R6/lib/modules/* $out/lib/xorg/modules/

    ln -snf libnvidia-wfb.so.$versionNumber $out/lib/xorg/modules/libnvidia-wfb.so.1
    ln -snf libglx.so.$versionNumber $out/lib/xorg/modules/extensions/libglx.so

    # Install the programs.
    ensureDir $out/bin

    patchelf --set-rpath $out/lib:$glPath $out/lib/libGL.so.*.*
    patchelf --set-rpath $out/lib:$glPath $out/lib/libXvMCNVIDIA.so.*.*
    patchelf --set-rpath $cudaPath $out/lib/libcuda.so.*.*
    patchelf --set-rpath $out/lib $out/lib/xorg/modules/extensions/libglx.so.*.*

    for i in nvidia-settings nvidia-xconfig; do
	cp usr/bin/$i $out/bin/$i
	patchelf --interpreter "$(cat $NIX_GCC/nix-support/dynamic-linker)" \
	    --set-rpath $out/lib:$programPath:$glPath $out/bin/$i
    done
    
    # Header files etc.
    cp -prd usr/include usr/share $out
}


genericBuild