{
  stdenv,
  lib,
  fetchurl,
  fetchpatch,
  fetchCrate,
  buildPackages,
  meson,
  pkg-config,
  ninja,
  intltool,
  bison,
  flex,
  file,
  python3Packages,
  wayland-scanner,
  expat,
  libdrm,
  xorg,
  wayland,
  wayland-protocols,
  openssl,
  llvmPackages,
  libffi,
  libomxil-bellagio,
  libva-minimal,
  elfutils,
  libvdpau,
  libglvnd,
  libunwind,
  lm_sensors,
  vulkan-loader,
  glslang,
  galliumDrivers ?
    if stdenv.isLinux then
      [
        "d3d12" # WSL emulated GPU (aka Dozen)
        "kmsro" # special "render only" driver for GPUs without a display controller
        "nouveau" # Nvidia
        "radeonsi" # new AMD (GCN+)
        "r300" # very old AMD
        "r600" # less old AMD
        "swrast" # software renderer (aka LLVMPipe)
        "svga" # VMWare virtualized GPU
        "virgl" # QEMU virtualized GPU (aka VirGL)
        "zink" # generic OpenGL over Vulkan, experimental
      ]
      ++ lib.optionals (stdenv.isAarch64 || stdenv.isAarch32) [
        "etnaviv" # Vivante GPU designs (mostly NXP/Marvell SoCs)
        "freedreno" # Qualcomm Adreno (all Qualcomm SoCs)
        "lima" # ARM Mali 4xx
        "panfrost" # ARM Mali Midgard and up (T/G series)
        "vc4" # Broadcom VC4 (Raspberry Pi 0-3)
      ]
      ++ lib.optionals stdenv.isAarch64 [
        "tegra" # Nvidia Tegra SoCs
        "v3d" # Broadcom VC5 (Raspberry Pi 4)
      ]
      ++ lib.optionals stdenv.hostPlatform.isx86 [
        "iris" # new Intel, could work on non-x86 with PCIe cards, but doesn't build as of 22.3.4
        "crocus" # Intel legacy, x86 only
        "i915" # Intel extra legacy, x86 only
      ]
    else
      [ "auto" ],
  vulkanDrivers ?
    if stdenv.isLinux then
      [
        "amd" # AMD (aka RADV)
        "microsoft-experimental" # WSL virtualized GPU (aka DZN/Dozen)
        "nouveau-experimental" # Nouveau (aka NVK)
        "swrast" # software renderer (aka Lavapipe)
      ]
      ++
        lib.optionals
          (stdenv.hostPlatform.isAarch -> lib.versionAtLeast stdenv.hostPlatform.parsed.cpu.version "6")
          [
            # QEMU virtualized GPU (aka VirGL)
            # Requires ATOMIC_INT_LOCK_FREE == 2.
            "virtio"
          ]
      ++ lib.optionals stdenv.isAarch64 [
        "broadcom" # Broadcom VC5 (Raspberry Pi 4, aka V3D)
        "freedreno" # Qualcomm Adreno (all Qualcomm SoCs)
        "imagination-experimental" # PowerVR Rogue (currently N/A)
        "panfrost" # ARM Mali Midgard and up (T/G series)
      ]
      ++ lib.optionals stdenv.hostPlatform.isx86 [
        "intel" # Intel (aka ANV), could work on non-x86 with PCIe cards, but doesn't build
        "intel_hasvk" # Intel Haswell/Broadwell, "legacy" Vulkan driver (https://www.phoronix.com/news/Intel-HasVK-Drop-Dead-Code)
      ]
    else
      [ "auto" ],
  eglPlatforms ? [ "x11" ] ++ lib.optionals stdenv.isLinux [ "wayland" ],
  vulkanLayers ? lib.optionals (!stdenv.isDarwin) [
    "device-select"
    "overlay"
    "intel-nullhw"
  ], # No Vulkan support on Darwin
  OpenGL,
  Xplugin,
  withValgrind ?
    lib.meta.availableOn stdenv.hostPlatform valgrind-light && !valgrind-light.meta.broken,
  valgrind-light,
  withLibunwind ? lib.meta.availableOn stdenv.hostPlatform libunwind,
  enableGalliumNine ? stdenv.isLinux,
  enableOSMesa ? stdenv.isLinux,
  enableOpenCL ? stdenv.isLinux && stdenv.isx86_64,
  enablePatentEncumberedCodecs ? true,
  jdupes,
  rustPlatform,
  rust-bindgen,
  rustc,
  spirv-llvm-translator,
  zstd,
  directx-headers,
  udev,
}:

# When updating this package, please verify at least these build (assuming x86_64-linux):
# nix build .#mesa .#pkgsi686Linux.mesa .#pkgsCross.aarch64-multiplatform.mesa .#pkgsMusl.mesa

let
  version = "24.0.5";
  hash = "sha256-OMwkXKj6o8adptJof4kGN3AB9jNlNIpizG9/r7HowBg=";

  # Release calendar: https://www.mesa3d.org/release-calendar.html
  # Release frequency: https://www.mesa3d.org/releasing.html#schedule
  branch = lib.versions.major version;

  withLibdrm = lib.meta.availableOn stdenv.hostPlatform libdrm;

  haveWayland = lib.elem "wayland" eglPlatforms;
  haveZink = lib.elem "zink" galliumDrivers;
  haveDozen = (lib.elem "d3d12" galliumDrivers) || (lib.elem "microsoft-experimental" vulkanDrivers);

  rustDeps = [
    {
      pname = "proc-macro2";
      version = "1.0.70";
      hash = "sha256-e4ZgyZUTu5nAtaH5QVkLelqJQX/XPj/rWkzf/g2c+1g=";
    }
    {
      pname = "quote";
      version = "1.0.33";
      hash = "sha256-VWRCZJO0/DJbNu0/V9TLaqlwMot65YjInWT9VWg57DY=";
    }
    {
      pname = "syn";
      version = "2.0.39";
      hash = "sha256-Mjen2L/omhVbhU/+Ao65mogs3BP3fY+Bodab3uU63EI=";
    }
    {
      pname = "unicode-ident";
      version = "1.0.12";
      hash = "sha256-KX8NqYYw6+rGsoR9mdZx8eT1HIPEUUyxErdk2H/Rlj8=";
    }
  ];

  copyRustDep = dep: ''
    cp -R --no-preserve=mode,ownership ${fetchCrate dep} subprojects/${dep.pname}-${dep.version}
    cp -R subprojects/packagefiles/${dep.pname}/* subprojects/${dep.pname}-${dep.version}/
  '';

  copyRustDeps = lib.concatStringsSep "\n" (builtins.map copyRustDep rustDeps);

  self = stdenv.mkDerivation {
    pname = "mesa";
    inherit version;

    src = fetchurl {
      urls = [
        "https://archive.mesa3d.org/mesa-${version}.tar.xz"
        "https://mesa.freedesktop.org/archive/mesa-${version}.tar.xz"
        "ftp://ftp.freedesktop.org/pub/mesa/mesa-${version}.tar.xz"
        "ftp://ftp.freedesktop.org/pub/mesa/${version}/mesa-${version}.tar.xz"
        "ftp://ftp.freedesktop.org/pub/mesa/older-versions/${branch}.x/${version}/mesa-${version}.tar.xz"
      ];
      inherit hash;
    };

    patches = [ ./opencl.patch ];

    postPatch = ''
      patchShebangs .

      # The drirc.d directory cannot be installed to $drivers as that would cause a cyclic dependency:
      substituteInPlace src/util/xmlconfig.c --replace \
        'DATADIR "/drirc.d"' '"${placeholder "out"}/share/drirc.d"'
      substituteInPlace src/util/meson.build --replace \
        "get_option('datadir')" "'${placeholder "out"}/share'"
      substituteInPlace src/amd/vulkan/meson.build --replace \
        "get_option('datadir')" "'${placeholder "out"}/share'"

      ${copyRustDeps}
    '';

    outputs =
      [
        "out"
        "dev"
        "drivers"
      ]
      ++ lib.optional enableOSMesa "osmesa"
      ++ lib.optional stdenv.isLinux "driversdev"
      ++ lib.optional enableOpenCL "opencl"
      # the Dozen drivers depend on libspirv2dxil, but link it statically, and
      # libspirv2dxil itself is pretty chonky, so relocate it to its own output
      # in case anything wants to use it at some point
      ++ lib.optional haveDozen "spirv2dxil";

    # Keep build-ids so drivers can use them for caching, etc.
    # Also some drivers segfault without this.
    separateDebugInfo = true;

    # Needed to discover llvm-config for cross
    preConfigure = ''
      PATH=${llvmPackages.libllvm.dev}/bin:$PATH
    '';

    mesonFlags =
      [
        "--sysconfdir=/etc"
        "--datadir=${placeholder "drivers"}/share" # Vendor files

        # Don't build in debug mode
        # https://gitlab.freedesktop.org/mesa/mesa/blob/master/docs/meson.html#L327
        "-Db_ndebug=true"

        "-Ddri-search-path=${libglvnd.driverLink}/lib/dri"

        "-Dplatforms=${lib.concatStringsSep "," eglPlatforms}"
        "-Dgallium-drivers=${lib.concatStringsSep "," galliumDrivers}"
        "-Dvulkan-drivers=${lib.concatStringsSep "," vulkanDrivers}"

        "-Ddri-drivers-path=${placeholder "drivers"}/lib/dri"
        "-Dvdpau-libs-path=${placeholder "drivers"}/lib/vdpau"
        "-Domx-libs-path=${placeholder "drivers"}/lib/bellagio"
        "-Dva-libs-path=${placeholder "drivers"}/lib/dri"
        "-Dd3d-drivers-path=${placeholder "drivers"}/lib/d3d"

        "-Dgallium-nine=${lib.boolToString enableGalliumNine}" # Direct3D in Wine
        "-Dosmesa=${lib.boolToString enableOSMesa}" # used by wine
        "-Dmicrosoft-clc=disabled" # Only relevant on Windows (OpenCL 1.2 API on top of D3D12)

        # To enable non-mesa gbm backends to be found (e.g. Nvidia)
        "-Dgbm-backends-path=${libglvnd.driverLink}/lib/gbm:${placeholder "out"}/lib/gbm"

        # meson auto_features enables these features, but we do not want them
        "-Dandroid-libbacktrace=disabled"

      ]
      ++ lib.optionals stdenv.isLinux [
        "-Dglvnd=true"

        # Enable RT for Intel hardware
        # https://gitlab.freedesktop.org/mesa/mesa/-/issues/9080
        (lib.mesonEnable "intel-clc" (stdenv.buildPlatform == stdenv.hostPlatform))
      ]
      ++ lib.optionals stdenv.isDarwin [
        # Disable features that are explicitly unsupported on the platform
        "-Dgbm=disabled"
        "-Dxlib-lease=disabled"
        "-Degl=disabled"
        "-Dgallium-vdpau=disabled"
        "-Dgallium-va=disabled"
        "-Dgallium-xa=disabled"
        "-Dlmsensors=disabled"
      ]
      ++ lib.optionals enableOpenCL [
        # Clover, old OpenCL frontend
        "-Dgallium-opencl=icd"
        "-Dopencl-spirv=true"

        # Rusticl, new OpenCL frontend
        "-Dgallium-rusticl=true"
        "-Dclang-libdir=${llvmPackages.clang-unwrapped.lib}/lib"
      ]
      ++ lib.optionals (!withValgrind) [ "-Dvalgrind=disabled" ]
      ++ lib.optionals (!withLibunwind) [ "-Dlibunwind=disabled" ]
      ++ lib.optional enablePatentEncumberedCodecs "-Dvideo-codecs=all"
      ++ lib.optional (
        vulkanLayers != [ ]
      ) "-D vulkan-layers=${builtins.concatStringsSep "," vulkanLayers}";

    strictDeps = true;

    buildInputs =
      with xorg;
      [
        expat
        glslang
        llvmPackages.libllvm
        libglvnd
        xorgproto
        libX11
        libXext
        libxcb
        libXt
        libXfixes
        libxshmfence
        libXrandr
        libffi
        libvdpau
        libXvMC
        libpthreadstubs
        openssl
        zstd
      ]
      ++ lib.optionals withLibunwind [ libunwind ]
      ++ [
        python3Packages.python # for shebang
      ]
      ++ lib.optionals haveWayland [
        wayland
        wayland-protocols
      ]
      ++ lib.optionals stdenv.isLinux [
        libomxil-bellagio
        libva-minimal
        udev
        lm_sensors
      ]
      ++ lib.optionals (lib.meta.availableOn stdenv.hostPlatform elfutils) [ elfutils ]
      ++ lib.optionals enableOpenCL [
        llvmPackages.libclc
        llvmPackages.clang
        llvmPackages.clang-unwrapped
        spirv-llvm-translator
      ]
      ++ lib.optional withValgrind valgrind-light
      ++ lib.optional haveZink vulkan-loader
      ++ lib.optional haveDozen directx-headers;

    depsBuildBuild =
      [ pkg-config ]
      # Adding this unconditionally makes x86_64-darwin pick up an older toolchain, as
      # we explicitly call Mesa with 11.0 stdenv, but buildPackages is still 10.something,
      # and Mesa can't build with that.
      # FIXME: figure this out, or figure out how to get rid of Mesa on Darwin,
      # whichever is easier.
      ++ lib.optional (!stdenv.isDarwin) buildPackages.stdenv.cc;

    nativeBuildInputs = [
      meson
      pkg-config
      ninja
      intltool
      bison
      flex
      file
      python3Packages.python
      python3Packages.mako
      python3Packages.ply
      jdupes
      glslang
      rustc
      rust-bindgen
      rustPlatform.bindgenHook
    ] ++ lib.optional haveWayland wayland-scanner;

    propagatedBuildInputs =
      with xorg;
      [
        libXdamage
        libXxf86vm
      ]
      ++ lib.optional withLibdrm libdrm
      ++ lib.optionals stdenv.isDarwin [
        OpenGL
        Xplugin
      ];

    doCheck = false;

    postInstall =
      ''
        # Some installs don't have any drivers so this directory is never created.
        mkdir -p $drivers $osmesa
      ''
      + lib.optionalString stdenv.isLinux ''
        mkdir -p $drivers/lib

        if [ -n "$(shopt -s nullglob; echo "$out/lib/libxatracker"*)" -o -n "$(shopt -s nullglob; echo "$out/lib/libvulkan_"*)" ]; then
          # move gallium-related stuff to $drivers, so $out doesn't depend on LLVM
          mv -t $drivers/lib       \
            $out/lib/libpowervr_rogue* \
            $out/lib/libxatracker* \
            $out/lib/libvulkan_*
        fi

        if [ -n "$(shopt -s nullglob; echo "$out"/lib/lib*_mesa*)" ]; then
          # Move other drivers to a separate output
          mv -t $drivers/lib $out/lib/lib*_mesa*
        fi

        # Update search path used by glvnd
        for js in $drivers/share/glvnd/egl_vendor.d/*.json; do
          substituteInPlace "$js" --replace '"libEGL_' '"'"$drivers/lib/libEGL_"
        done

        # Update search path used by Vulkan (it's pointing to $out but
        # drivers are in $drivers)
        for js in $drivers/share/vulkan/icd.d/*.json; do
          substituteInPlace "$js" --replace "$out" "$drivers"
        done
      ''
      + lib.optionalString enableOpenCL ''
        # Move OpenCL stuff
        mkdir -p $opencl/lib
        mv -t "$opencl/lib/"     \
          $out/lib/gallium-pipe   \
          $out/lib/lib*OpenCL*

        # We construct our own .icd files that contain absolute paths.
        mkdir -p $opencl/etc/OpenCL/vendors/
        echo $opencl/lib/libMesaOpenCL.so > $opencl/etc/OpenCL/vendors/mesa.icd
        echo $opencl/lib/libRusticlOpenCL.so > $opencl/etc/OpenCL/vendors/rusticl.icd
      ''
      + lib.optionalString enableOSMesa ''
        # move libOSMesa to $osmesa, as it's relatively big
        mkdir -p $osmesa/lib
        mv -t $osmesa/lib/ $out/lib/libOSMesa*
      ''
      + lib.optionalString (vulkanLayers != [ ]) ''
        mv -t $drivers/lib $out/lib/libVkLayer*
        for js in $drivers/share/vulkan/{im,ex}plicit_layer.d/*.json; do
          substituteInPlace "$js" --replace '"libVkLayer_' '"'"$drivers/lib/libVkLayer_"
        done
      ''
      + lib.optionalString haveDozen ''
        mkdir -p $spirv2dxil/{bin,lib}
        mv -t $spirv2dxil/lib $out/lib/libspirv_to_dxil*
        mv -t $spirv2dxil/bin $out/bin/spirv2dxil
      '';

    postFixup = lib.optionalString stdenv.isLinux ''
      # set the default search path for DRI drivers; used e.g. by X server
      for pc in lib/pkgconfig/{dri,d3d}.pc; do
        [ -f "$dev/$pc" ] && substituteInPlace "$dev/$pc" --replace "$drivers" "${libglvnd.driverLink}"
      done

      # remove pkgconfig files for GL/EGL; they are provided by libGL.
      rm -f $dev/lib/pkgconfig/{gl,egl}.pc

      # Move development files for libraries in $drivers to $driversdev
      mkdir -p $driversdev/include
      mv $dev/include/xa_* $dev/include/d3d* -t $driversdev/include || true
      mkdir -p $driversdev/lib/pkgconfig
      for pc in lib/pkgconfig/{xatracker,d3d}.pc; do
        if [ -f "$dev/$pc" ]; then
          substituteInPlace "$dev/$pc" --replace $out $drivers
          mv $dev/$pc $driversdev/$pc
        fi
      done

      # Don't depend on build python
      patchShebangs --host --update $out/bin/*

      # NAR doesn't support hard links, so convert them to symlinks to save space.
      jdupes --hard-links --link-soft --recurse "$drivers"

      # add RPATH so the drivers can find the moved libgallium and libdricore9
      # moved here to avoid problems with stripping patchelfed files
      for lib in $drivers/lib/*.so* $drivers/lib/*/*.so*; do
        if [[ ! -L "$lib" ]]; then
          patchelf --set-rpath "$(patchelf --print-rpath $lib):$drivers/lib" "$lib"
        fi
      done
      # add RPATH here so Zink can find libvulkan.so
      ${lib.optionalString haveZink ''
        patchelf --add-rpath ${vulkan-loader}/lib $drivers/lib/dri/zink_dri.so
      ''}
    '';

    env.NIX_CFLAGS_COMPILE = toString (
      lib.optionals stdenv.isDarwin [ "-fno-common" ]
      ++ lib.optionals enableOpenCL [
        "-UPIPE_SEARCH_DIR"
        "-DPIPE_SEARCH_DIR=\"${placeholder "opencl"}/lib/gallium-pipe\""
      ]
    );

    passthru = {
      inherit (libglvnd) driverLink;
      inherit llvmPackages;

      libdrm = if withLibdrm then libdrm else null;

      tests = lib.optionalAttrs stdenv.isLinux {
        devDoesNotDependOnLLVM = stdenv.mkDerivation {
          name = "mesa-dev-does-not-depend-on-llvm";
          buildCommand = ''
            echo ${self.dev} >>$out
          '';
          disallowedRequisites = [
            llvmPackages.llvm
            self.drivers
          ];
        };
      };
    };

    meta = with lib; {
      description = "An open source 3D graphics library";
      longDescription = ''
        The Mesa project began as an open-source implementation of the OpenGL
        specification - a system for rendering interactive 3D graphics. Over the
        years the project has grown to implement more graphics APIs, including
        OpenGL ES (versions 1, 2, 3), OpenCL, OpenMAX, VDPAU, VA API, XvMC, and
        Vulkan.  A variety of device drivers allows the Mesa libraries to be used
        in many different environments ranging from software emulation to
        complete hardware acceleration for modern GPUs.
      '';
      homepage = "https://www.mesa3d.org/";
      changelog = "https://www.mesa3d.org/relnotes/${version}.html";
      license = licenses.mit; # X11 variant, in most files
      platforms = platforms.mesaPlatforms;
      maintainers = with maintainers; [
        primeos
        vcunat
      ]; # Help is welcome :)
    };
  };

in
self