Refactor intel wrapper logic into single function

New apt list does not have Package: as the first entry for all packages

flake.lock

@@ -2,16 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1752436162,
+        "lastModified": 1764522689,
-        "narHash": "sha256-Kt1UIPi7kZqkSc5HVj6UY5YLHHEzPBkgpNUByuyxtlw=",
+        "narHash": "sha256-SqUuBFjhl/kpDiVaKLQBoD8TLD+/cTUzzgVFoaHrkqY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "dfcd5b901dbab46c9c6e80b265648481aafb01f8",
+        "rev": "8bb5646e0bed5dbd3ab08c7a7cc15b75ab4e1d0f",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-25.05",
+        "ref": "nixos-25.11",
         "repo": "nixpkgs",
         "type": "github"
       }

flake.nix

@@ -1,6 +1,6 @@
 {
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.11";
   };
 
   outputs = { self, nixpkgs, ... }:

m/common/base/env.nix

@@ -1,10 +1,10 @@
-{ pkgs, config, ... }:
+{ pkgs, ... }:
 
 {
   environment.systemPackages = with pkgs; [
     vim wget git htop tmux pciutils tcpdump ripgrep nix-index nixos-option
     nix-diff ipmitool freeipmi ethtool lm_sensors cmake gnumake file tree
-    ncdu config.boot.kernelPackages.perf ldns pv
+    ncdu perf ldns pv
     # From jungle overlay
     osumb nixgen
   ];

m/common/base/watchdog.nix

@@ -5,5 +5,5 @@
   boot.kernelModules = [ "ipmi_watchdog" ];
 
   # Enable systemd watchdog with 30 s interval
-  systemd.watchdog.runtimeTime = "30s";
+  systemd.settings.Manager.RuntimeWatchdogSec = 30;
 }

m/module/debuginfod.nix

@@ -1,3 +1,10 @@
 {
-  services.nixseparatedebuginfod.enable = true;
+  services.nixseparatedebuginfod2 = {
+    enable = true;
+    substituters = [
+      "local:"
+      "https://cache.nixos.org"
+      "http://hut/cache"
+    ];
+  };
 }

overlay.nix

@@ -19,7 +19,11 @@ let
     cudainfo = prev.callPackage ./pkgs/cudainfo/default.nix { };
     #extrae = callPackage ./pkgs/extrae/default.nix { }; # Broken and outdated
     gpi-2 = callPackage ./pkgs/gpi-2/default.nix { };
+    intel-apt = callPackage ./pkgs/intel-oneapi/packages.nix { };
     intelPackages_2023 = callPackage ./pkgs/intel-oneapi/2023.nix { };
+    intelPackages_2024 = final.intel-apt.hpckit_2024;
+    intelPackages_2025 = final.intel-apt.hpckit_2025;
+    intelPackages = final.intelPackages_2025;
     jemallocNanos6 = callPackage ./pkgs/nanos6/jemalloc.nix { };
     # FIXME: Extend this to all linuxPackages variants. Open problem, see:
     # https://discourse.nixos.org/t/whats-the-right-way-to-make-a-custom-kernel-module-available/4636
@@ -30,7 +34,8 @@ let
       amd-uprof-driver = _prev.callPackage ./pkgs/amd-uprof/driver.nix { };
     });
     lmbench = callPackage ./pkgs/lmbench/default.nix { };
-    mcxx = callPackage ./pkgs/mcxx/default.nix { };
+    # Broken and unmantained
+    # mcxx = callPackage ./pkgs/mcxx/default.nix { };
     meteocat-exporter = prev.callPackage ./pkgs/meteocat-exporter/default.nix { };
     mpi = final.mpich; # Set MPICH as default
     mpich = callPackage ./pkgs/mpich/default.nix { mpich = prev.mpich; };
@@ -43,6 +48,7 @@ let
     #nix-wrap = callPackage ./pkgs/nix-wrap/default.nix { };
     nodes = callPackage ./pkgs/nodes/default.nix { };
     nosv = callPackage ./pkgs/nosv/default.nix { };
+    oneMath = callPackage ./pkgs/onemath/default.nix { };
     openmp = callPackage ./pkgs/llvm-ompss2/openmp.nix { monorepoSrc = final.clangOmpss2Unwrapped.src; version = final.clangOmpss2Unwrapped.version; };
     openmpv = final.openmp.override { enableNosv = true; enableOvni = true; };
     osumb = callPackage ./pkgs/osu/default.nix { };
@@ -60,6 +66,8 @@ let
     stdenvClangOmpss2NodesOmpv = final.stdenv.override { cc = final.clangOmpss2NodesOmpv; allowedRequisites = null; };
     tagaspi = callPackage ./pkgs/tagaspi/default.nix { };
     tampi = callPackage ./pkgs/tampi/default.nix { };
+    tasycl = callPackage ./pkgs/tasycl/default.nix { };
+    tasycl-acpp = callPackage ./pkgs/tasycl/default.nix { useIntel = false; };
     upc-qaire-exporter = prev.callPackage ./pkgs/upc-qaire-exporter/default.nix { };
     wxparaver = callPackage ./pkgs/paraver/default.nix { };
   };
@@ -69,6 +77,8 @@ let
     #sigsegv = callPackage ./test/reproducers/sigsegv.nix { };
     hello-c = callPackage ./test/compilers/hello-c.nix { };
     hello-cpp = callPackage ./test/compilers/hello-cpp.nix { };
+    hello-sycl = callPackage ./test/compilers/hello-sycl.nix { };
+    hello-syclompss = callPackage ./test/compilers/icpx-ompss2.nix { };
     lto = callPackage ./test/compilers/lto.nix { };
     asan = callPackage ./test/compilers/asan.nix { };
     intel2023-icx-c   = hello-c.override   { stdenv = final.intelPackages_2023.stdenv; };
@@ -78,6 +88,13 @@ let
     intel2023-ifort   = callPackage ./test/compilers/hello-f.nix {
       stdenv = final.intelPackages_2023.stdenv-ifort;
     };
+    intel2024-icx-c   = hello-c.override   { stdenv = final.intelPackages_2024.stdenv; };
+    intel2025-icx-c   = hello-c.override   { stdenv = final.intelPackages_2025.stdenv; };
+    intel2024-icx-cpp = hello-cpp.override { stdenv = final.intelPackages_2024.stdenv; };
+    intel2025-icx-cpp = hello-cpp.override { stdenv = final.intelPackages_2025.stdenv; };
+    # intel2023-sycl    = hello-sycl.override { intelPackages = final.intelPackages_2023; }; # broken
+    intel2024-sycl    = hello-sycl.override { intelPackages = final.intelPackages_2024; };
+    intel2025-sycl    = hello-sycl.override { intelPackages = final.intelPackages_2025; };
     clangOmpss2-lto   = lto.override       { stdenv = final.stdenvClangOmpss2Nanos6; };
     clangOmpss2-asan  = asan.override      { stdenv = final.stdenvClangOmpss2Nanos6; };
     clangOmpss2-task  = callPackage ./test/compilers/ompss2.nix {

pkgs/amd-uprof/driver.nix

@@ -19,7 +19,7 @@ in stdenv.mkDerivation {
   '';
   hardeningDisable = [ "pic" "format" ];
   nativeBuildInputs = kernel.moduleBuildDependencies;
-  patches = [ ./makefile.patch ./hrtimer.patch ];
+  patches = [ ./makefile.patch ./hrtimer.patch ./remove-wr-rdmsrq.patch ];
   makeFlags = [
     "KERNEL_VERSION=${kernel.modDirVersion}"
     "KERNEL_DIR=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"

pkgs/amd-uprof/remove-wr-rdmsrq.patch

@@ -0,0 +1,20 @@
+diff --git a/inc/PwrProfAsm.h b/inc/PwrProfAsm.h
+index d77770a..c93a0e9 100644
+--- a/inc/PwrProfAsm.h
++++ b/inc/PwrProfAsm.h
+@@ -347,6 +347,7 @@
+ 
+ #endif
+ 
++/*
+ #define rdmsrq(msr,val1,val2,val3,val4) ({ \
+         __asm__ __volatile__( \
+                               "rdmsr\n" \
+@@ -362,6 +363,7 @@
+                               :"c"(msr), "a"(val1), "d"(val2), "S"(val3), "D"(val4) \
+                             ); \
+     })
++*/
+ 
+ #define rdmsrpw(msr,val1,val2,val3,val4) ({ \
+         __asm__ __volatile__( \

pkgs/cudainfo/default.nix

@@ -12,7 +12,7 @@ stdenv.mkDerivation (finalAttrs: {
   src = ./.;
   buildInputs = [
     cudatoolkit # Required for nvcc
-    cudaPackages.cuda_cudart.static # Required for -lcudart_static
+    (lib.getOutput "static" cudaPackages.cuda_cudart) # Required for -lcudart_static
     autoAddDriverRunpath
   ];
   installPhase = ''

pkgs/gpi-2/default.nix

@@ -9,7 +9,6 @@
 , automake
 , libtool
 , mpi
-, rsync
 , gfortran
 }:
 
@@ -44,13 +43,24 @@ stdenv.mkDerivation rec {
 
   configureFlags = [
     "--with-infiniband=${rdma-core-all}"
-    "--with-mpi=${mpiAll}"
+    "--with-mpi=yes" # fixes mpi detection when cross-compiling
     "--with-slurm"
     "CFLAGS=-fPIC"
     "CXXFLAGS=-fPIC"
   ];
 
-  buildInputs = [ slurm mpiAll rdma-core-all autoconf automake libtool rsync gfortran ];
+  nativeBuildInputs = [
+    autoconf
+    automake
+    gfortran
+    libtool
+  ];
+
+  buildInputs = [
+    slurm
+    mpiAll
+    rdma-core-all
+  ];
 
   hardeningDisable = [ "all" ];
 
@@ -60,5 +70,6 @@ stdenv.mkDerivation rec {
     maintainers = with lib.maintainers.bsc; [ rarias ];
     platforms = lib.platforms.linux;
     license = lib.licenses.gpl3Plus;
+    cross = false; # infiniband detection does not work
   };
 }

pkgs/intel-oneapi/2023.nix

@@ -10,7 +10,7 @@
 , zlib
 , autoPatchelfHook
 , libfabric
-, gcc13
+, gcc
 , wrapCCWith
 }:
 
@@ -33,8 +33,6 @@ let
     maintainers = with lib.maintainers.bsc; [ abonerib ];
   };
 
-  gcc = gcc13;
-
   v = {
     hpckit   = "2023.1.0";
     compiler = "2023.1.0";
@@ -42,45 +40,19 @@ let
     mpi      = "2021.9.0";
   };
 
-  aptPackageIndex = stdenv.mkDerivation {
+  findMatch = name:
-    name = "intel-oneapi-packages";
+  let
-    srcs = [
+    aptPackages = builtins.fromJSON (builtins.readFile ./packages.json);
-      # Run update.sh to update the package lists
+    matches = lib.filter (x: name == x.pname) aptPackages;
-      ./amd64-packages ./all-packages
+    n = lib.length matches;
-    ];
+    match = builtins.traceVerbose (name + " -- ${builtins.toString n}") (builtins.head matches);
-    phases = [ "installPhase" ];
-    installPhase = ''
-      awk -F': ' '\
-        BEGIN   { print "[ {" } \
-        NR>1 && /^Package: / { print "} {"; } \
-        /: /    { printf "%s = \"%s\";\n", $1, $2 } \
-        END     { print "} ]" }' $srcs > $out
-    '';
-  };
-
-  aptPackages = import aptPackageIndex;
 
     apthost = "https://apt.repos.intel.com/oneapi/";
-
-  getSum = pkgList: name:
-  let
-    matches = lib.filter (x: name == x.Package) pkgList;
-    #n = lib.length matches;
-    #match = builtins.trace (name + " -- ${builtins.toString n}") (lib.elemAt matches 0);
-    match = lib.elemAt matches 0;
   in
-    match.SHA256;
+    {
-
+      url = apthost + match.filename;
-  getUrl = pkgList: name:
+      sha256 = match.sha256;
-  let
+    };
-    matches = lib.filter (x: name == x.Package) pkgList;
-    #match = assert lib.length matches == 1; lib.elemAt matches 0;
-    n = lib.length matches;
-    match =
-      #builtins.trace (name + " -- n=${builtins.toString n}")
-      (lib.elemAt matches 0);
-  in
-    apthost + match.Filename;
 
   uncompressDebs = debs: name: stdenv.mkDerivation {
     name = name;
@@ -100,10 +72,7 @@ let
 
   joinDebs = name: names:
   let
-    urls = builtins.map (x: getUrl aptPackages x) names;
+    debs = builtins.map (x: builtins.fetchurl (findMatch x)) names;
-    sums = builtins.map (x: getSum aptPackages x) names;
-    getsrc = url: sha256: builtins.fetchurl { inherit url sha256; };
-    debs = lib.zipListsWith getsrc urls sums;
   in
     uncompressDebs debs "${name}-source";
 
@@ -472,7 +441,7 @@ let
     '';
   };
 
-  ifort-wrapper = wrapIntel rec {
+  ifort-wrapper = wrapIntel {
     cc = intel-compiler-fortran;
     mygcc = gcc;
     extraBuild = ''

pkgs/intel-oneapi/packages.nix

@@ -0,0 +1,297 @@
+{
+  lib,
+  stdenv,
+  callPackage,
+  dpkg,
+  fetchurl,
+
+  sqlite,
+  elfutils,
+}:
+
+let
+  inherit (builtins)
+    attrNames
+    attrValues
+    concatMap
+    elem
+    filter
+    fromJSON
+    getAttr
+    groupBy
+    head
+    isNull
+    listToAttrs
+    map
+    mapAttrs
+    readFile
+    replaceStrings
+    splitVersion
+    ;
+  inherit (lib)
+    converge
+    findFirst
+    groupBy'
+    hasPrefix
+    optional
+    pipe
+    take
+    toInt
+    toList
+    versionAtLeast
+    versionOlder
+    ;
+
+  aptData = fromJSON (readFile ./packages.json);
+
+  # Compare versions in debian control file syntax
+  # See: https://www.debian.org/doc/debian-policy/ch-relationships.html#syntax-of-relationship-fields
+  #
+  # NOTE: this is not a proper version comparison
+  #
+  # A proper version solver, should aggregate dependencies with the same name
+  # and compute the constraint (e.g. a (>= 2) a (<< 5) -> 2 <= a << 5)
+  #
+  # But in the intel repo, there are no such "duplicated" dependencies to specify
+  # upper limits, which leads to issues when intel-hpckit-2021 depends on things
+  # like intel-basekit >= 2021.1.0-2403 and we end up installing the newest
+  # basekit instead of the one from 2021.
+  #
+  # To mitigate this, >= is set to take the latest version with matching major
+  # and minor (only revision and patch are allowed to change)
+  compareVersions =
+    got: kind: want:
+    let
+      g0 = take 2 (splitVersion got);
+      w0 = take 2 (splitVersion want);
+    in
+    if isNull want then
+      true
+    else if kind == "=" then
+      got == want
+    else if kind == "<<" then
+      versionOlder got want
+    else if kind == "<=" then
+      versionAtLeast want got
+    else if kind == ">>" then
+      versionOlder want got
+    else if kind == ">=" then
+      (g0 == w0) && versionAtLeast got want # always match major version
+    else
+      throw "unknown operation: ${kind}";
+
+  findMatching =
+    {
+      pname,
+      kind,
+      version,
+    }:
+    findFirst (x: pname == x.pname && compareVersions x.version kind version) null aptData;
+
+  isIntel = pkg: (hasPrefix "intel-" pkg.pname);
+
+  expandDeps =
+    pkg: (map findMatching (filter isIntel pkg.dependencies)) ++ (optional (pkg.size != 0) pkg);
+
+  # get the oldest by major version. If they have the same major version, take
+  # the newest. This prevents most issues with resolutions
+  # versionOlder b a -> true if b is older than a (b `older` a)
+  getNewerInMajor =
+    a: b:
+    let
+      va = a.version;
+      vb = b.version;
+      va0 = head (splitVersion va);
+      vb0 = head (splitVersion vb);
+    in
+    if isNull a then
+      b
+    else if va0 != vb0 then
+      if va0 > vb0 then b else a
+    else if versionOlder vb va then
+      a
+    else
+      b;
+  removeDups = l: attrValues (groupBy' getNewerInMajor null (getAttr "provides") l);
+
+  _resolveDeps = converge (l: removeDups (concatMap expandDeps l));
+  resolveDeps =
+    pkg:
+    let
+      deps = _resolveDeps (toList pkg);
+      namedDeps = (map (x: "${x.pname}-${x.version}") deps);
+    in
+    builtins.traceVerbose (builtins.deepSeq namedDeps namedDeps) deps;
+
+  blacklist = [
+    "intel-basekit-env"
+    "intel-basekit-getting-started"
+    "intel-hpckit-env"
+    "intel-hpckit-getting-started"
+    "intel-oneapi-advisor"
+    "intel-oneapi-common-licensing"
+    "intel-oneapi-common-oneapi-vars"
+    "intel-oneapi-common-vars"
+    "intel-oneapi-compiler-cpp-eclipse-cfg"
+    "intel-oneapi-compiler-dpcpp-eclipse-cfg"
+    "intel-oneapi-condaindex"
+    "intel-oneapi-dev-utilities-eclipse-cfg"
+    "intel-oneapi-dpcpp-ct-eclipse-cfg"
+    "intel-oneapi-eclipse-ide"
+    "intel-oneapi-hpc-toolkit-getting-started"
+    "intel-oneapi-icc-eclipse-plugin-cpp"
+    "intel-oneapi-vtune"
+    "intel-oneapi-vtune-eclipse-plugin-vtune"
+  ];
+
+  isInBlacklist = pkg: elem pkg.provides blacklist;
+  removeBlacklist = filter (e: !(isInBlacklist e));
+
+  dpkgExtractAll =
+    pname: version:
+    { srcs, deps }:
+    stdenv.mkDerivation {
+      inherit pname version srcs;
+
+      nativeBuildInputs = [ dpkg ];
+      phases = [ "installPhase" ];
+
+      passthru = { inherit deps; };
+
+      installPhase = ''
+        mkdir -p $out
+        for src in $srcs; do
+          echo "Unpacking $src"
+          dpkg -x $src $out
+        done
+      '';
+    };
+
+  apthost = "https://apt.repos.intel.com/oneapi/";
+  fetchDeb =
+    p:
+    fetchurl {
+      url = apthost + p.filename;
+      inherit (p) sha256;
+    };
+
+  buildIntel =
+    pkg:
+    pipe pkg [
+      resolveDeps
+      removeBlacklist
+      (l: {
+        srcs = map fetchDeb l;
+        deps = l;
+      })
+      (dpkgExtractAll "${pkg.provides}-extracted" pkg.version)
+    ];
+
+  findHpcKit =
+    year:
+    findMatching {
+      pname = "intel-hpckit";
+      kind = "<<";
+      version = toString (year + 1);
+    };
+  years = map toInt (attrNames components);
+
+  patchIntel = callPackage ./patch_intel.nix { };
+
+  # Version information for each hpckit. This is used to normalize the paths
+  # so that files are in $out/{bin,lib,include...} instead of all over the place
+  # in $out/opt/intel/oneapi/*/*/{...}.
+  #
+  # The most important is the compiler component, which is used to build the
+  # stdenv for the hpckit.
+  #
+  # NOTE: this have to be manually specified, so we can avoid IFD. To add a
+  # new version, add a new field with an empty attrset, (e.g. "2026" = {}; ),
+  # build hpckit_2026.unpatched and use the values from
+  # result/opt/intel/oneapi/* to populate the attrset.
+  #
+  # WARN: if there are more than one version in the folders of the unpatched
+  # components, our dependency resolution hacks have probably failed and the
+  # package set may be broken.
+  components = {
+    "2025" = {
+      ishmem = "1.4";
+      pti = "0.13";
+      tcm = "1.4";
+      umf = "0.11";
+
+      ccl = "2021.16";
+      compiler = "2025.2";
+      dal = "2025.8";
+      debugger = "2025.2";
+      dev-utilities = "2025.2";
+      dnnl = "2025.2";
+      dpcpp-ct = "2025.2";
+      dpl = "2022.9";
+      ipp = "2022.2";
+      ippcp = "2025.2";
+      mkl = "2025.2";
+      mpi = "2021.16";
+      tbb = "2022.2";
+    };
+    "2024" = {
+      tcm = "1.1";
+
+      ccl = "2021.13";
+      compiler = "2024.2";
+      dal = "2024.6";
+      debugger = "2024.2";
+      dev-utilities = "2024.2";
+      diagnostics = "2024.2";
+      dnnl = "2024.2";
+      dpcpp-ct = "2024.2";
+      dpl = "2022.6";
+      ipp = "2021.12";
+      ippcp = "2021.12";
+      mkl = "2024.2";
+      mpi = "2021.13";
+      tbb = "2021.13";
+
+      extraPackages = [
+        sqlite
+        elfutils
+      ];
+    };
+  };
+
+  replaceDots = replaceStrings [ "." ] [ "_" ];
+
+in
+lib.recurseIntoAttrs (
+  listToAttrs (
+    map (
+      year:
+      let
+        year_str = toString year;
+      in
+      {
+        name = "hpckit_${year_str}";
+        value = patchIntel {
+          unpatched = buildIntel (findHpcKit year);
+          components = components.${year_str};
+        };
+      }
+    ) years
+  )
+)
+// {
+  apt = pipe aptData [
+    (groupBy (p: replaceDots p.provides))
+    (mapAttrs (
+      _: l:
+      listToAttrs (
+        map (pkg: {
+          name = replaceDots ("v" + pkg.version);
+          value = pkg;
+        }) l
+      )
+    ))
+  ];
+
+  inherit resolveDeps patchIntel buildIntel;
+}

pkgs/intel-oneapi/patch_intel.nix

@@ -0,0 +1,189 @@
+{
+  stdenv,
+  stdenvNoCC,
+  lib,
+  symlinkJoin,
+  autoPatchelfHook,
+  wrapCCWith,
+  overrideCC,
+  gcc,
+  hwloc,
+  libelf,
+  libffi_3_3,
+  libpsm2,
+  libuuid,
+  libxml2,
+  numactl,
+  ocl-icd,
+  openssl,
+  python3,
+  rdma-core,
+  ucx,
+  zlib,
+}:
+
+lib.makeOverridable (
+  {
+    unpatched,
+    components ? { },
+    extraPackages ? components.extraPackages or [ ],
+  }:
+
+  let
+    inherit (builtins)
+      attrValues
+      filter
+      mapAttrs
+      removeAttrs
+      ;
+
+    __components = removeAttrs components [ "extraPackages" ];
+    _components = __components;
+    # _components = lib.traceSeqN 2 {
+    #   inherit unpatched __components;
+    #   deps = builtins.map (x: "${x.pname}-${x.version}") unpatched.deps;
+    # } __components;
+
+    wrapIntel =
+      cc:
+      let
+        targetConfig = stdenv.targetPlatform.config;
+      in
+      (wrapCCWith {
+        inherit cc;
+
+        nixSupport = {
+          cc-ldflags = [
+            "-L${gcc.cc}/lib/gcc/${targetConfig}/${gcc.version}"
+            "-L${gcc.cc.lib}/lib"
+            "-L${cc}/lib"
+          ];
+          cc-cflags = [
+            "--gcc-toolchain=${gcc.cc}"
+            "-isystem \"${cc.original}/lib/clang/*/include\""
+            "-isystem ${cc}/include"
+            "-isystem ${cc}/include/intel64"
+            "-isystem ${gcc.cc}/lib/gcc/${targetConfig}/${gcc.version}/include"
+          ];
+          libcxx-cxxflags = [
+            # "--gcc-toolchain=${gcc.cc}"
+            "-isystem ${gcc.cc}/include/c++/${gcc.version}"
+            "-isystem ${gcc.cc}/include/c++/${gcc.version}/${targetConfig}"
+          ];
+        };
+
+        extraBuildCommands = ''
+          # FIXME: We should find a better way to modify the PATH instead of using
+          # this ugly hack. See https://jungle.bsc.es/git/rarias/bscpkgs/issues/9
+          echo 'path_backup="${gcc.cc}/bin:$path_backup"' >>$out/nix-support/cc-wrapper-hook
+
+          # Disable hardening by default
+          echo "" > $out/nix-support/add-hardening.sh
+
+          wrap icx  $wrapper $ccPath/icx
+          wrap icpx $wrapper $ccPath/icpx
+          wrap ifx  $wrapper $ccPath/ifx
+
+          ln -s $out/bin/icpx $out/bin/c++
+          ln -s $out/bin/icx  $out/bin/cc
+
+          sed -i 's/.*isCxx=0/isCxx=1/' $out/bin/icpx
+
+          # Use this to detect when a compiler subprocess is called
+          # from icpx (--fsycl-host-compiler)
+          echo 'export NIX_CC_WRAPPER_INTEL=1' >>$out/nix-support/cc-wrapper-hook
+
+          # oneMath looks for sycl libraries in bin/../lib
+          ln -s ${cc}/lib $out/lib
+          ln -s ${cc}/include $out/include
+        '';
+      }).overrideAttrs
+        (old: {
+          installPhase = old.installPhase + ''
+            export named_cc="icx"
+            export named_cxx="icpx"
+            export named_fc="ifx"
+          '';
+        });
+
+  in
+  stdenvNoCC.mkDerivation (finalAttrs: {
+    pname = lib.removeSuffix "-extracted" unpatched.pname;
+    inherit (unpatched) version;
+    src = unpatched;
+
+    phases = [
+      "installPhase"
+      "fixupPhase"
+    ];
+    buildInputs = [
+      libffi_3_3
+      libelf
+      libxml2
+      hwloc
+      numactl
+      libuuid
+      libpsm2
+      zlib
+      ocl-icd
+      rdma-core
+      ucx
+      openssl
+      python3
+      stdenv.cc.cc.lib
+    ]
+    ++ extraPackages;
+
+    autoPatchelfIgnoreMissingDeps = [
+      "libhwloc.so.5"
+      "libcuda.so.1"
+      "libze_loader.so.1"
+    ];
+
+    # There are broken symlinks that go outside packages, ignore them
+    dontCheckForBrokenSymlinks = true;
+
+    nativeBuildInputs = [ autoPatchelfHook ];
+    installPhase = ''
+      cp -r $src/opt/intel/oneapi/ $out
+    '';
+
+    passthru =
+      let
+        pkgs = mapAttrs (
+          folder: version:
+          let
+            original = "${finalAttrs.finalPackage}/${folder}/${version}";
+          in
+          (symlinkJoin {
+            pname = "intel-${folder}";
+            inherit version;
+            paths = [ original ];
+          }).overrideAttrs
+            { passthru = { inherit original; }; }
+        ) _components;
+      in
+      pkgs
+      // {
+        inherit unpatched;
+        pkgs = lib.recurseIntoAttrs pkgs;
+        components = _components;
+
+        # This contains all packages properly symlinked into toplevel directories
+        # in $out.
+        #
+        # NOTE: there are clashes with packages that have symlinks outside their
+        # scope (libtcm and env/vars.sh)
+        all = symlinkJoin {
+          pname = finalAttrs.finalPackage + "-symlinked";
+          inherit (finalAttrs.finalPackage) version;
+          paths = filter lib.isDerivation (attrValues finalAttrs.finalPackage.pkgs);
+        };
+
+        stdenv = overrideCC stdenv finalAttrs.finalPackage.cc;
+
+        cc = wrapIntel finalAttrs.finalPackage.pkgs.compiler;
+      };
+
+  })
+)

pkgs/intel-oneapi/process.jq

@@ -0,0 +1,29 @@
+#!/usr/bin/env -S jq -f
+
+def extract_fields: {
+        pname : .Package,
+        version : .Version,
+        provides : .Package | sub("[0-9.-]*$"; ""),
+        filename : .Filename,
+        size : ."Installed-Size" | tonumber,
+        sha256 : .SHA256,
+        dependencies : .Depends,
+    } ;
+
+# parses dependencies into a list of [{.pname, .kind, .version}]
+# some dependencies do not have a version specified, in which case, kind = version = null
+#
+# example dependencies:
+# intel-oneapi-common-vars (>= 2023.0.0-25325), intel-oneapi-common-licensing-2023.0.0
+
+def split_dependencies : map(try(.dependencies |= split(",\\s?"; "")) // .dependencies |= []) ;
+
+def match_version : capture("(?<pname>[a-zA-Z0-9_\\-.]*) *(\\((?<kind>[<>=]*) *(?<version>.*)\\))?"; "") ;
+
+def parse_dependencies : map_values(.dependencies.[] |= match_version) ;
+
+def sort_version_decreasing : sort_by(.version | split("[-.]"; "") | map(tonumber)) | reverse ;
+
+map(extract_fields) | split_dependencies | parse_dependencies | sort_version_decreasing
+
+# [.[] | select(.pname == "intel-hpckit") | .version]

pkgs/intel-oneapi/toJson.awk

@@ -0,0 +1,29 @@
+#!/usr/bin/env -S awk -f
+
+BEGIN   {
+    FS=": "
+
+    prev_empty=1
+    t="  "
+
+    print "[ {"
+}
+
+!NF { # empty line, update separator so next non empty line closes the dict
+    prev_empty=1
+    t="},\n{ "
+    next # skip line (we won't match anything else)
+}
+
+{
+    printf t "\"%s\" : \"%s\"\n", $1, $2
+
+    if (prev_empty) {
+        # we were the first after a group of empty lines, following ones have to
+        # have a comma
+        prev_empty=0
+        t=", "
+    }
+}
+
+END     { print "} ]" }

pkgs/intel-oneapi/update.sh

@@ -1,4 +1,11 @@
 #!/bin/sh
 
-curl https://apt.repos.intel.com/oneapi/dists/all/main/binary-amd64/Packages -o amd64-packages
+out_64=$(mktemp intel-api.64.XXXXXX)
-curl https://apt.repos.intel.com/oneapi/dists/all/main/binary-all/Packages -o all-packages
+out_all=$(mktemp intel-api.all.XXXXXX)
+trap 'rm -f "$out_64" "$out_all"' EXIT INT HUP
+
+curl https://apt.repos.intel.com/oneapi/dists/all/main/binary-amd64/Packages -o "$out_64"
+curl https://apt.repos.intel.com/oneapi/dists/all/main/binary-all/Packages -o "$out_all"
+
+# NOTE: we use `jq -r tostring` to minify the json (3.2Mb -> 2.3Mb)
+cat "$out_64" "$out_all" | ./toJson.awk | ./process.jq | jq -r tostring >packages.json

pkgs/llvm-ompss2/default.nix

@@ -3,6 +3,7 @@
 , lib
 , gcc
 , clangOmpss2Unwrapped
+, writeShellScript
 , openmp ? null
 , wrapCCWith
 , llvmPackages_latest
@@ -27,20 +28,17 @@ let
   # We need to replace the lld linker from bintools with our linker just built,
   # otherwise we run into incompatibility issues when mixing compiler and linker
   # versions.
-  bintools-unwrapped = llvmPackages_latest.tools.bintools-unwrapped.override {
+  bintools-unwrapped = llvmPackages_latest.bintools-unwrapped.override {
     lld = clangOmpss2Unwrapped;
   };
-  bintools = llvmPackages_latest.tools.bintools.override {
+  bintools = llvmPackages_latest.bintools.override {
     bintools = bintools-unwrapped;
   };
   targetConfig = stdenv.targetPlatform.config;
   inherit gcc;
   cc = clangOmpss2Unwrapped;
   gccVersion = with versions; let v = gcc.version; in concatStringsSep "." [(major v) (minor v) (patch v)];
-in wrapCCWith {
+
-  inherit cc bintools;
-  # extraPackages adds packages to depsTargetTargetPropagated
-  extraPackages = optional (openmp != null) openmp;
   extraBuildCommands = ''
     echo "-target ${targetConfig}" >> $out/nix-support/cc-cflags
     echo "-B${gcc.cc}/lib/gcc/${targetConfig}/${gccVersion}" >> $out/nix-support/cc-cflags
@@ -57,8 +55,9 @@ in wrapCCWith {
     echo "--gcc-toolchain=${gcc}" >> $out/nix-support/cc-cflags
 
     wrap clang++  $wrapper $ccPath/clang++
+  '';
 
-  '' + optionalString (openmp != null) ''
+  envExports = lib.optionalString (openmp != null) ''
       echo "export OPENMP_RUNTIME=${ompname}" >> $out/nix-support/cc-wrapper-hook
     '' + optionalString (ompss2rt != null) ''
       echo "export OMPSS2_RUNTIME=${rtname}" >> $out/nix-support/cc-wrapper-hook
@@ -66,5 +65,40 @@ in wrapCCWith {
     '' + optionalString (ompss2rt != null && ompss2rt.pname == "nodes") ''
       echo "export NOSV_HOME=${ompss2rt.nosv}" >> $out/nix-support/cc-wrapper-hook
     '';
-}
 
+  extraPackages = optional (openmp != null) openmp;
+
+  wrappedCC = wrapCCWith {
+    # extraPackages adds packages to depsTargetTargetPropagated
+    inherit cc bintools extraPackages;
+    extraBuildCommands = extraBuildCommands + envExports;
+  };
+
+  resetIntelCCFlags = let tconf = builtins.replaceStrings ["-"] ["_"] targetConfig;
+  in writeShellScript "remove-intel.sh" ''
+    if [ "''${NIX_CC_WRAPPER_INTEL:-0}" = 1 ]; then
+      unset NIX_CFLAGS_COMPILE_${tconf}
+      unset NIX_CC_WRAPPER_FLAGS_SET_${tconf}
+
+      if (( "''${NIX_DEBUG:-0}" >= 1 )); then
+        echo "ompss2: cleaned NIX_CFLAGS_COMPILE_${tconf} (invokation from intel compiler detected)"
+      fi
+    fi
+  '';
+
+  intelExtraBuildCommands = ''
+    sed -i 's|# Flirting.*|source ${resetIntelCCFlags}\n\n&|' $out/bin/clang
+    sed -i 's|# Flirting.*|source ${resetIntelCCFlags}\n\n&|' $out/bin/clang++
+  '';
+
+  wrappedCCIntel = wrapCCWith {
+    inherit cc bintools extraPackages;
+    # extraPackages adds packages to depsTargetTargetPropagated
+    extraBuildCommands = intelExtraBuildCommands + envExports;
+  };
+
+in wrappedCC.overrideAttrs (oldAttrs: {
+    passthru = oldAttrs.passthru // {
+      forIcpx = wrappedCCIntel;
+    };
+  })

pkgs/mcxx/default.nix

@@ -65,6 +65,7 @@ stdenv.mkDerivation rec {
   ];
 
   meta = {
+    broken = true;
     homepage = "https://github.com/bsc-pm/mcxx";
     description = "C/C++/Fortran source-to-source compilation infrastructure aimed at fast prototyping";
     maintainers = with lib.maintainers.bsc; [ rpenacob ];

pkgs/meteocat-exporter/default.nix

@@ -1,9 +1,11 @@
 { python3Packages, lib }:
 
-python3Packages.buildPythonApplication rec {
+python3Packages.buildPythonApplication {
   pname = "meteocat-exporter";
   version = "1.0";
 
+  pyproject = true;
+
   src = ./.;
 
   doCheck = false;

pkgs/mpich/default.nix

@@ -6,6 +6,13 @@
 , pmix
 , gfortran
 , symlinkJoin
+# Disabled when cross-compiling
+# To fix cross compilation, we should fill the values in:
+# https://github.com/pmodels/mpich/blob/main/maint/fcrosscompile/cross_values.txt.in
+# For each arch
+, enableFortran ? stdenv.hostPlatform == stdenv.buildPlatform
+, perl
+, targetPackages
 }:
 
 let
@@ -15,10 +22,13 @@ let
     paths = [ pmix.dev pmix.out ];
   };
 in mpich.overrideAttrs (old: {
-  buildInput = old.buildInputs ++ [
+  buildInputs = old.buildInputs ++ [
     libfabric
     pmixAll
   ];
+  nativeBuildInputs = old.nativeBuildInputs ++ [
+    perl
+  ];
   configureFlags = [
     "--enable-shared"
     "--enable-sharedlib"
@@ -31,10 +41,21 @@ in mpich.overrideAttrs (old: {
   ] ++ lib.optionals (lib.versionAtLeast gfortran.version "10") [
     "FFLAGS=-fallow-argument-mismatch" # https://github.com/pmodels/mpich/issues/4300
     "FCFLAGS=-fallow-argument-mismatch"
+  ] ++ lib.optionals (!enableFortran) [
+    "--disable-fortran"
   ];
+
+  preFixup = ''
+    sed -i 's:^CC=.*:CC=${targetPackages.stdenv.cc}/bin/${targetPackages.stdenv.cc.targetPrefix}cc:' $out/bin/mpicc
+    sed -i 's:^CXX=.*:CXX=${targetPackages.stdenv.cc}/bin/${targetPackages.stdenv.cc.targetPrefix}c++:' $out/bin/mpicxx
+  '' + lib.optionalString enableFortran ''
+    sed -i 's:^FC=.*:FC=${targetPackages.gfortran or gfortran}/bin/${targetPackages.gfortran.targetPrefix or gfortran.targetPrefix}gfortran:' $out/bin/mpifort
+  '';
+
   hardeningDisable = [ "all" ];
 
   meta = old.meta // {
     maintainers = old.meta.maintainers ++ (with lib.maintainers.bsc; [ rarias ]);
+    cross = true;
   };
 })

pkgs/onemath/default.nix

@@ -0,0 +1,91 @@
+{
+  lib,
+  fetchFromGitHub,
+  cmake,
+  withCFlags,
+  intelPackages,
+
+  mklSupport ? true,
+
+  config,
+
+  cudaSupport ? config.cudaSupport,
+  cudaPackages ? { },
+
+  rocmSupport ? config.rocmSupport,
+  hipTargets ? null, # only one target at a time supported
+  rocmPackages ? { },
+}:
+
+let
+  # rocmSupport is not enough, we need a specific target
+  enableHip = rocmSupport && hipTargets != null;
+
+  stdenv = withCFlags (lib.optionals cudaSupport [
+    "--cuda-path=${cudaPackages.cudatoolkit}"
+  ]) intelPackages.stdenv;
+in
+
+# at least one backend has to be enabled
+assert mklSupport || cudaSupport || enableHip;
+
+stdenv.mkDerivation rec {
+  pname = "oneMath";
+  version = "0.8";
+
+  src = fetchFromGitHub {
+    owner = "uxlfoundation";
+    repo = "oneMath";
+    rev = "v${version}";
+    sha256 = "sha256-xK8lKI3oqKlx3xtvdScpMq+HXAuoYCP0BZdkEqnJP5o=";
+  };
+
+  cmakeFlags = [
+    (lib.cmakeBool "ENABLE_MKLCPU_BACKEND" mklSupport)
+    (lib.cmakeBool "ENABLE_MKLGPU_BACKEND" mklSupport)
+
+    (lib.cmakeBool "ENABLE_CUBLAS_BACKEND" cudaSupport)
+    (lib.cmakeBool "ENABLE_CUFFT_BACKEND" cudaSupport)
+    (lib.cmakeBool "ENABLE_CURAND_BACKEND" cudaSupport)
+    (lib.cmakeBool "ENABLE_CUSOLVER_BACKEND" cudaSupport)
+    (lib.cmakeBool "ENABLE_CUSPARSE_BACKEND" cudaSupport)
+
+    (lib.cmakeBool "ENABLE_ROCBLAS_BACKEND" enableHip)
+    (lib.cmakeBool "ENABLE_ROCFFT_BACKEND" enableHip)
+    (lib.cmakeBool "ENABLE_ROCSOLVER_BACKEND" enableHip)
+    (lib.cmakeBool "ENABLE_ROCRAND_BACKEND" enableHip)
+    (lib.cmakeBool "ENABLE_ROCSPARSE_BACKEND" enableHip)
+
+    (lib.cmakeBool "BUILD_FUNCTIONAL_TESTS" false)
+    (lib.cmakeBool "BUILD_EXAMPLES" false)
+  ]
+  ++ lib.optionals enableHip [
+    (lib.cmakeFeature "HIP_TARGETS" hipTargets)
+  ];
+
+  nativeBuildInputs = [ cmake ];
+  buildInputs =
+    lib.optionals (mklSupport) [
+      intelPackages.mkl
+      intelPackages.tbb
+    ]
+    ++ lib.optionals (enableHip) [
+      rocmPackages.rocmPath
+      rocmPackages.rocblas
+      rocmPackages.rocfft
+      rocmPackages.rocsolver
+      rocmPackages.rocrand
+      rocmPackages.rocsparse
+    ]
+    ++ lib.optionals (cudaSupport) [
+      (lib.getDev cudaPackages.cuda_cudart)
+      cudaPackages.cudatoolkit
+
+      cudaPackages.libcublas
+      cudaPackages.libcurand
+      cudaPackages.libcufft
+      cudaPackages.libcusparse
+      cudaPackages.libcusolver
+    ];
+
+}

pkgs/osu/default.nix

@@ -32,6 +32,11 @@ stdenv.mkDerivation rec {
       "CXX=mpicxx"
   ];
 
+  env = {
+    MPICH_CC="${stdenv.cc}/bin/${stdenv.cc.targetPrefix}cc";
+    MPICH_CXX="${stdenv.cc}/bin/${stdenv.cc.targetPrefix}c++";
+  };
+
   postInstall = ''
     mkdir -p $out/bin
     for f in $(find $out -executable -type f); do
@@ -44,5 +49,6 @@ stdenv.mkDerivation rec {
     homepage = "http://mvapich.cse.ohio-state.edu/benchmarks/";
     maintainers = [ ];
     platforms = lib.platforms.all;
+    cross = true;
   };
 }

pkgs/paraver/default.nix

@@ -12,7 +12,7 @@
 , paraverKernel
 , openssl
 , glibcLocales
-, wrapGAppsHook
+, wrapGAppsHook3
 }:
 
 let
@@ -64,7 +64,7 @@ stdenv.mkDerivation rec {
     autoconf
     automake
     autoreconfHook
-    wrapGAppsHook
+    wrapGAppsHook3
   ];
 
   buildInputs = [

pkgs/sonar/default.nix

@@ -35,5 +35,6 @@ stdenv.mkDerivation rec {
     maintainers = with lib.maintainers.bsc; [ rarias ];
     platforms = lib.platforms.linux;
     license = lib.licenses.mit;
+    cross = true;
   };
 }

pkgs/tagaspi/default.nix

@@ -5,23 +5,14 @@
 , automake
 , autoconf
 , libtool
-, mpi
 , autoreconfHook
 , gpi-2
 , boost
 , numactl
 , rdma-core
 , gfortran
-, symlinkJoin
 }:
 
-let
-  mpiAll = symlinkJoin {
-    name = "mpi-all";
-    paths = [ mpi.all ];
-  };
-in
-
 stdenv.mkDerivation rec {
   pname = "tagaspi";
   enableParallelBuilding = true;
@@ -35,16 +26,18 @@ stdenv.mkDerivation rec {
     hash = "sha256-RGG/Re2uM293HduZfGzKUWioDtwnSYYdfeG9pVrX9EM=";
   };
 
-  buildInputs = [
+  nativeBuildInputs = [
     autoreconfHook
     automake
     autoconf
     libtool
+    gfortran
+  ];
+
+  buildInputs = [
     boost
     numactl
     rdma-core
-    gfortran
-    mpiAll
   ];
 
   dontDisableStatic = true;
@@ -63,5 +56,6 @@ stdenv.mkDerivation rec {
     maintainers = with lib.maintainers.bsc; [ rarias ];
     platforms = lib.platforms.linux;
     license = lib.licenses.gpl3Plus;
+    cross = false; # gpi-2 cannot cross
   };
 }

pkgs/tampi/default.nix

@@ -68,5 +68,6 @@ in stdenv.mkDerivation {
     maintainers = with lib.maintainers.bsc; [ rarias ];
     platforms = lib.platforms.linux;
     license = lib.licenses.gpl3Plus;
+    cross = true;
   };
 }

pkgs/tasycl/default.nix

@@ -0,0 +1,87 @@
+{
+  lib,
+  stdenv,
+  autoconf,
+  automake,
+  autoreconfHook,
+  boost,
+  fetchFromGitHub,
+  gnumake,
+  libtool,
+  withCFlags,
+
+  useIntel ? true,
+  adaptivecpp ? null,
+  intelPackages ? null,
+
+  useGit ? false,
+  gitUrl ? "git@gitlab-internal.bsc.es:task-awareness/tasycl/tasycl.git",
+  gitBranch ? "main",
+  gitCommit ? "78f98dcf60a66e0eaa3b4ebcf55be076bec64825",
+}:
+
+assert !useIntel -> adaptivecpp != null;
+assert useIntel -> intelPackages != null;
+
+let
+  variant = if useIntel then "intel" else "acpp";
+
+  syclStdenv = withCFlags [ "-O3" ] (if useIntel then intelPackages.stdenv else stdenv);
+
+  release = rec {
+    version = "2.1.0";
+    src = fetchFromGitHub {
+      owner = "bsc-pm";
+      repo = "tasycl";
+      rev = version;
+      hash = "sha256-0kXnb0lHeQNHR27GTLbJ8xbiICLU8k2+FqEnnFSrzzo=";
+    };
+  };
+
+  git = rec {
+    version = src.shortRev;
+    src = builtins.fetchGit {
+      url = gitUrl;
+      ref = gitBranch;
+      rev = gitCommit;
+    };
+  };
+
+  source = if (useGit) then git else release;
+
+in
+
+syclStdenv.mkDerivation {
+  pname = "tasycl-${variant}";
+  inherit (source) src version;
+
+  enableParallelBuilding = true;
+  separateDebugInfo = true;
+
+  nativeBuildInputs = [
+    autoreconfHook
+    automake
+    autoconf
+    libtool
+    gnumake
+  ];
+
+  buildInputs = [
+    boost
+  ];
+
+  configureFlags = lib.optionals (!useIntel) [
+    "CXX=${lib.getExe adaptivecpp}"
+  ];
+
+  # add symlinks so we can explicitly link with tasycl-intel / tasycl-acpp
+  postInstall = ''
+    pushd $out/lib
+    for i in libtasycl* ; do
+      ln -s "$i" "''\${i/tasycl/tasycl-${variant}}"
+    done
+    popd
+  '';
+
+  hardeningDisable = [ "all" ];
+}

pkgs/upc-qaire-exporter/default.nix

@@ -1,9 +1,11 @@
 { python3Packages, lib }:
 
-python3Packages.buildPythonApplication rec {
+python3Packages.buildPythonApplication {
   pname = "upc-qaire-exporter";
   version = "1.0";
 
+  pyproject = true;
+
   src = ./.;
 
   doCheck = false;

test/compilers/hello-sycl.nix

@@ -0,0 +1,62 @@
+{
+  intelPackages,
+  writeText,
+  strace,
+}:
+
+let
+  stdenv = intelPackages.stdenv;
+  hello_sycl = writeText "hello.cpp" ''
+    #include <sycl/sycl.hpp>
+
+    class hello_world;
+
+    int main(int argc, char** argv) try {
+        auto device_selector = sycl::default_selector_v;
+
+        sycl::queue queue(device_selector);
+
+        std::cout << "Running on: "
+                  << queue.get_device().get_info<sycl::info::device::name>()
+                  << std::endl;
+
+        queue.submit([&] (sycl::handler& cgh) {
+            auto os = sycl::stream{128, 128, cgh};
+            cgh.single_task<hello_world>([=]() {
+                os << "Hello World! (on device)\n";
+            });
+        });
+
+        return 0;
+    } catch (sycl::exception &e) {
+        std::cout << "SYCL exception: " << e.what() << std::endl;
+        return 0; // we excpect to fail since no devices should be available;
+    }
+  '';
+in
+
+stdenv.mkDerivation {
+  version = "0.0.1";
+  name = "hello-sycl";
+  buildInputs = [
+    stdenv
+    strace
+  ];
+  src = hello_sycl;
+  dontUnpack = true;
+  dontConfigure = true;
+  NIX_DEBUG = 0;
+  buildPhase = ''
+    cp $src hello.cpp
+    set -x
+    echo CXX=$CXX
+    command -v $CXX
+    $CXX -fsycl hello.cpp -o hello
+    ./hello
+    set +x
+  '';
+
+  installPhase = ''
+    touch $out
+  '';
+}

test/compilers/icpx-ompss2.nix

@@ -0,0 +1,81 @@
+{
+  writeText,
+  intelPackages,
+  nodes,
+  nosv,
+  clangOmpss2Nodes,
+  strace,
+}:
+
+let
+  hello_cpp = writeText "hello.cpp" ''
+    #include <cstdio>
+    #include <sycl/sycl.hpp>
+
+    int main(int argc, char** argv) try {
+        sycl::queue queue;
+
+        std::cout << "Running on: "
+                  << queue.get_device().get_info<sycl::info::device::name>()
+                  << std::endl;
+
+        #pragma oss task
+        queue.submit([&] (sycl::handler& cgh) {
+            auto os = sycl::stream{128, 128, cgh};
+            cgh.single_task<class hello_world>([=]() {
+                os << "Hello World! (on device)\n";
+            });
+        }).wait();
+
+        return 0;
+    } catch (sycl::exception &e) {
+        std::cout << "SYCL exception: " << e.what() << std::endl;
+        return 0; // we expect to fail since no devices should be available;
+    }
+
+  '';
+in
+
+intelPackages.stdenv.mkDerivation {
+  version = "0.0.1";
+  name = "hello-syclompss";
+
+  src = hello_cpp;
+
+  nativeBuildInputs = [
+    strace
+    nodes
+    nosv
+  ];
+
+  dontUnpack = true;
+  dontConfigure = true;
+
+  # NODES requires access to /sys/devices to request NUMA information
+  requiredSystemFeatures = [ "sys-devices" ];
+
+  env.NODES_HOME = nodes;
+
+  NIX_DEBUG = 1;
+  buildPhase = ''
+    cp $src hello.cpp
+    set -x
+    echo CXX=$CXX
+    echo NODES_HOME=$NODES_HOME
+    command -v $CXX
+
+    icpx -Wno-deprecated-declarations -fsycl \
+        -fsycl-host-compiler=${clangOmpss2Nodes.forIcpx}/bin/clang++ \
+        -fsycl-host-compiler-options='-Wno-deprecated-declarations -fompss-2=libnodes' \
+        -lnodes -lnosv \
+        $NODES_HOME/lib/nodes-main-wrapper.o \
+        hello.cpp -o hello
+
+    ./hello
+    set +x
+  '';
+
+  installPhase = ''
+    touch $out
+  '';
+}