Remove unneeded flake inputs

Reviewed-by: Aleix Boné <abonerib@bsc.es>
Tested-by: Rodrigo Arias Mallo <rodrigo.arias@bsc.es>

.gitea/workflows/ci.yaml

@@ -12,4 +12,9 @@ jobs:
     runs-on: native
     steps:
       - uses: https://gitea.com/ScMi1/checkout@v1.4
-      - run: nix build -L --no-link --print-out-paths .#bsc-ci.all
+      - run: nix build -L --no-link --print-out-paths .#bsc.ci.all
+  build:cross:
+    runs-on: native
+    steps:
+      - uses: https://gitea.com/ScMi1/checkout@v1.4
+      - run: nix build -L --no-link --print-out-paths .#bsc.ci.cross

flake.lock

@@ -2,12 +2,14 @@
   "nodes": {
     "agenix": {
       "inputs": {
-        "darwin": "darwin",
-        "home-manager": "home-manager",
+        "darwin": [],
+        "home-manager": [],
         "nixpkgs": [
           "nixpkgs"
         ],
-        "systems": "systems"
+        "systems": [
+          "systems"
+        ]
       },
       "locked": {
         "lastModified": 1750173260,
@@ -23,49 +25,6 @@
         "type": "github"
       }
     },
-    "darwin": {
-      "inputs": {
-        "nixpkgs": [
-          "agenix",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1744478979,
-        "narHash": "sha256-dyN+teG9G82G+m+PX/aSAagkC+vUv0SgUw3XkPhQodQ=",
-        "owner": "lnl7",
-        "repo": "nix-darwin",
-        "rev": "43975d782b418ebf4969e9ccba82466728c2851b",
-        "type": "github"
-      },
-      "original": {
-        "owner": "lnl7",
-        "ref": "master",
-        "repo": "nix-darwin",
-        "type": "github"
-      }
-    },
-    "home-manager": {
-      "inputs": {
-        "nixpkgs": [
-          "agenix",
-          "nixpkgs"
-        ]
-      },
-      "locked": {
-        "lastModified": 1745494811,
-        "narHash": "sha256-YZCh2o9Ua1n9uCvrvi5pRxtuVNml8X2a03qIFfRKpFs=",
-        "owner": "nix-community",
-        "repo": "home-manager",
-        "rev": "abfad3d2958c9e6300a883bd443512c55dfeb1be",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "home-manager",
-        "type": "github"
-      }
-    },
     "nixpkgs": {
       "locked": {
         "lastModified": 1752436162,
@@ -85,23 +44,21 @@
     "root": {
       "inputs": {
         "agenix": "agenix",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "systems": "systems"
       }
     },
     "systems": {
+      "flake": false,
       "locked": {
-        "lastModified": 1681028828,
-        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
-        "owner": "nix-systems",
-        "repo": "default",
-        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
-        "type": "github"
+        "path": "./pkgs/systems.nix",
+        "type": "path"
       },
       "original": {
-        "owner": "nix-systems",
-        "repo": "default",
-        "type": "github"
-      }
+        "path": "./pkgs/systems.nix",
+        "type": "path"
+      },
+      "parent": []
     }
   },
   "root": "root",

flake.nix

@@ -1,8 +1,15 @@
 {
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
+
+    systems.url = "path:./pkgs/systems.nix";
+    systems.flake = false;
+
     agenix.url = "github:ryantm/agenix";
     agenix.inputs.nixpkgs.follows = "nixpkgs";
+    agenix.inputs.systems.follows = "systems";
+    agenix.inputs.darwin.follows = "";
+    agenix.inputs.home-manager.follows = "";
   };
 
   outputs = { self, nixpkgs, agenix, ... }:
@@ -42,9 +49,7 @@ in
     # full nixpkgs with our overlay applied
     legacyPackages.${system} = pkgs;
 
-    hydraJobs = {
-      inherit (self.legacyPackages.${system}.bsc-ci) tests pkgs cross;
-    };
+    hydraJobs = self.legacyPackages.${system}.bsc.hydraJobs;
 
     # propagate nixpkgs lib, so we can do bscpkgs.lib
     inherit (nixpkgs) lib;

m/common/base.nix

@@ -11,6 +11,7 @@
     ./base/hw.nix
     ./base/net.nix
     ./base/nix.nix
+    ./base/sys-devices.nix
     ./base/ntp.nix
     ./base/rev.nix
     ./base/ssh.nix

m/common/base/sys-devices.nix

@@ -0,0 +1,9 @@
+{
+  nix.settings.system-features = [ "sys-devices" ];
+
+  programs.nix-required-mounts.enable = true;
+  programs.nix-required-mounts.allowedPatterns.sys-devices.paths = [
+    "/sys/devices/system/cpu"
+    "/sys/devices/system/node"
+  ];
+}

overlay.nix

@@ -18,11 +18,7 @@ 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
@@ -45,7 +41,6 @@ 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 { };
@@ -62,19 +57,15 @@ 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 { };
   };
 
   tests = rec {
-    #hwloc = callPackage ./test/bugs/hwloc.nix { }; # Broken, no /sys
+    hwloc = callPackage ./test/bugs/hwloc.nix { };
     #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; };
@@ -84,13 +75,6 @@ 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 {
@@ -110,12 +94,18 @@ let
     };
   };
 
-  pkgs = filterAttrs (_: isDerivation) bscPkgs;
+  # For now, only build toplevel packages in CI/Hydra
+  pkgsTopLevel = filterAttrs (_: isDerivation) bscPkgs;
 
-  crossTargets = [ "riscv64" ];
-  cross = prev.lib.genAttrs crossTargets (target:
-    final.pkgsCross.${target}.bsc-ci.pkgs
-  );
+  # Native build in that platform doesn't imply cross build works
+  canCrossCompile = platform: pkg:
+    (isDerivation pkg) &&
+    # Must be defined explicitly
+    (pkg.meta.cross or false) &&
+    (meta.availableOn platform pkg);
+
+  # For now only RISC-V
+  crossSet = { riscv64 = final.pkgsCross.riscv64.bsc.pkgsTopLevel; };
 
   buildList = name: paths:
     final.runCommandLocal name { } ''
@@ -129,22 +119,31 @@ let
       printf '%s\n' $deps >$out
     '';
 
-  crossList = builtins.mapAttrs (t: v: buildList t (builtins.attrValues v)) cross;
-
-  pkgsList = buildList "ci-pkgs" (builtins.attrValues pkgs);
-  testList = buildList "ci-tests" (collect isDerivation tests);
-
-  all = buildList' "ci-all" [ pkgsList testList ];
+  pkgsList = buildList "ci-pkgs" (builtins.attrValues pkgsTopLevel);
+  testsList = buildList "ci-tests" (collect isDerivation tests);
+  allList = buildList' "ci-all" [ pkgsList testsList ];
+  # For now only RISC-V
+  crossList = buildList "ci-cross"
+    (filter
+      (canCrossCompile final.pkgsCross.riscv64.stdenv.hostPlatform)
+        (builtins.attrValues crossSet.riscv64));
 
 in bscPkgs // {
-  # Prevent accidental usage of bsc attribute
-  bsc = throw "the bsc attribute is deprecated, packages are now in the root";
+  # Prevent accidental usage of bsc-ci attribute
+  bsc-ci = throw "the bsc-ci attribute is deprecated, use bsc.ci";
 
   # Internal for our CI tests
-  bsc-ci = {
-    inherit pkgs pkgsList;
-    inherit tests testList;
-    inherit cross crossList;
-    inherit all;
+  bsc = {
+    # CI targets for nix build
+    ci = { pkgs = pkgsList; tests = testsList; all = allList; cross = crossList; };
+
+    # Direct access to package sets
+    tests = tests;
+    pkgs = bscPkgs;
+    pkgsTopLevel = pkgsTopLevel;
+    cross = crossSet;
+
+    # Hydra uses attribute sets of pkgs
+    hydraJobs = { tests = tests; pkgs = pkgsTopLevel; cross = crossSet; };
   };
 }

pkgs/extrae/default.nix

@@ -20,6 +20,7 @@
 #, python3Packages
 , installShellFiles
 , symlinkJoin
+, enablePapi ? stdenv.hostPlatform == stdenv.buildPlatform # Disabled when cross-compiling
 }:
 
 let
@@ -87,7 +88,7 @@ stdenv.mkDerivation rec {
       --enable-sampling
       --with-unwind=${libunwind.dev}
       --with-xml-prefix=${libxml2.dev}
-      --with-papi=${papi}
+      ${lib.optionalString enablePapi "--with-papi=${papi}"}
       ${if (mpi != null) then ''--with-mpi=${mpi}''
         else ''--without-mpi''}
       --without-dyninst)

pkgs/intel-oneapi/2023.nix

@@ -35,19 +35,45 @@ let
     mpi      = "2021.9.0";
   };
 
-  findMatch = name:
-  let
-    aptPackages = builtins.fromJSON (builtins.readFile ./packages.json);
-    matches = lib.filter (x: name == x.pname) aptPackages;
-    n = lib.length matches;
-    match = builtins.traceVerbose (name + " -- ${builtins.toString n}") (builtins.head matches);
+  aptPackageIndex = stdenv.mkDerivation {
+    name = "intel-oneapi-packages";
+    srcs = [
+      # Run update.sh to update the package lists
+      ./amd64-packages ./all-packages
+    ];
+    phases = [ "installPhase" ];
+    installPhase = ''
+      awk -F': ' '\
+        BEGIN   { print "[ {" } \
+        NR>1 && /^Package: / { print "} {"; } \
+        /: /    { printf "%s = \"%s\";\n", $1, $2 } \
+        END     { print "} ]" }' $srcs > $out
+    '';
+  };
 
-    apthost = "https://apt.repos.intel.com/oneapi/";
+  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 + " -- ${builtins.toString n}") (lib.elemAt matches 0);
+    match = lib.elemAt matches 0;
   in
-    {
-      url = apthost + match.filename;
-      sha256 = match.sha256;
-    };
+    match.SHA256;
+
+  getUrl = pkgList: name:
+  let
+    matches = lib.filter (x: name == x.Package) pkgList;
+    #match = assert lib.length matches == 1; lib.elemAt matches 0;
+    n = lib.length matches;
+    match =
+      #builtins.trace (name + " -- n=${builtins.toString n}")
+      (lib.elemAt matches 0);
+  in
+    apthost + match.Filename;
 
   uncompressDebs = debs: name: stdenv.mkDerivation {
     name = name;
@@ -65,7 +91,10 @@ let
 
   joinDebs = name: names:
   let
-    debs = builtins.map (x: builtins.fetchurl (findMatch x)) names;
+    urls = builtins.map (x: getUrl aptPackages 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";
 
@@ -424,7 +453,7 @@ let
     '';
   };
 
-  ifort-wrapper = wrapIntel {
+  ifort-wrapper = wrapIntel rec {
     cc = intel-compiler-fortran;
     mygcc = gcc;
     extraBuild = ''

pkgs/intel-oneapi/packages.nix

@@ -1,205 +0,0 @@
-{ lib
-, stdenv
-, callPackage
-, dpkg
-, fetchurl
-, recurseIntoAttrs
-
-, sqlite
-, elfutils
-}:
-
-let
-  inherit (builtins)
-    elem attrNames attrValues concatMap 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 $out/opt/intel/oneapi/*/*/{...}.
-  #
-  # The most important is the compiler component, which is used to build the
-  # stdenv for the hpckit.
-  #
-  # NOTE: this have to be manually specified, so we can avoid IFD. To add a
-  # new version, add a new field with an empty attrset, (e.g. "2026" = {}; ),
-  # build hpckit_2026.unpatched and use the values from
-  # result/opt/intel/oneapi/* to populate the attrset.
-  #
-  # WARN: if there are more than one version in the folders of the unpatched
-  # components, our dependency resolution hacks have probably failed and the
-  # package set may be broken.
-  components = {
-    "2025" = {
-      ishmem = "1.4";
-      pti = "0.13";
-      tcm = "1.4";
-      umf = "0.11";
-
-      ccl = "2021.16";
-      compiler = "2025.2";
-      dal = "2025.8";
-      debugger = "2025.2";
-      dev-utilities = "2025.2";
-      dnnl = "2025.2";
-      dpcpp-ct = "2025.2";
-      dpl = "2022.9";
-      ipp = "2022.2";
-      ippcp = "2025.2";
-      mkl = "2025.2";
-      mpi = "2021.16";
-      tbb = "2022.2";
-    };
-    "2024" = {
-      tcm = "1.1";
-
-      ccl = "2021.13";
-      compiler = "2024.2";
-      dal = "2024.6";
-      debugger = "2024.2";
-      dev-utilities = "2024.2";
-      diagnostics = "2024.2";
-      dnnl = "2024.2";
-      dpcpp-ct = "2024.2";
-      dpl = "2022.6";
-      ipp = "2021.12";
-      ippcp = "2021.12";
-      mkl = "2024.2";
-      mpi = "2021.13";
-      tbb = "2021.13";
-
-      extraPackages = [
-        sqlite
-        elfutils
-      ];
-    };
-  };
-
-  replaceDots = replaceStrings ["."] ["_"];
-
-in recurseIntoAttrs (listToAttrs (map (year: let
-      year_str = toString year;
-    in {
-      name = "hpckit_${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

@@ -1,179 +0,0 @@
-{ stdenvNoCC
-, lib
-, symlinkJoin
-, autoPatchelfHook
-, wrapCCWith
-, overrideCC
-, gcc13
-, gcc13Stdenv
-, hwloc
-, libelf
-, libffi_3_3
-, libpsm2
-, libuuid
-, libxml2
-, numactl
-, ocl-icd
-, openssl
-, python3
-, rdma-core
-, ucx
-, zlib
-, makeOverridable
-, recurseIntoAttrs
-}:
-
-makeOverridable (
-{
-  unpatched,
-  components ? { },
-  extraPackages ? components.extraPackages or []
-}:
-
-let
-  inherit (builtins) attrValues filter mapAttrs removeAttrs;
-
-  gcc = gcc13;
-  stdenv = gcc13Stdenv;
-
-  __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, extraBuildCommands ? "", extraInstall ? "", ... }@args:
-    let
-      targetConfig = stdenv.targetPlatform.config;
-    in (wrapCCWith {
-      inherit cc;
-      extraBuildCommands = ''
-        echo "-L${gcc.cc}/lib/gcc/${targetConfig}/${gcc.version}" >> $out/nix-support/cc-ldflags
-        echo "-L${gcc.cc.lib}/lib" >> $out/nix-support/cc-ldflags
-        echo "-L${cc}/lib" >> $out/nix-support/cc-ldflags
-
-        # echo "--gcc-toolchain=${gcc.cc}" >> $out/nix-support/libcxx-cxxflags
-        echo "--gcc-toolchain=${gcc.cc}" >> $out/nix-support/cc-cflags
-
-        # For some reason, If we don't resolve the realpath things go wrong
-        for stddef in ${cc}/lib/clang/*/include/stddef.h ; do
-          dir=$(dirname $(realpath "$stddef"))
-          echo "-isystem $dir" >> $out/nix-support/cc-cflags
-        done
-
-        echo "-isystem ${cc}/include" >> $out/nix-support/cc-cflags
-        echo "-isystem ${cc}/include/intel64" >> $out/nix-support/cc-cflags
-
-        for dir in ${gcc.cc}/lib/gcc/${targetConfig}/*/include; do
-          echo "-isystem $dir" >> $out/nix-support/cc-cflags
-        done
-
-        for dir in ${gcc.cc}/include/c++/*; do
-          echo "-isystem $dir" >> $out/nix-support/libcxx-cxxflags
-        done
-        for dir in ${gcc.cc}/include/c++/*/${targetConfig}; do
-          echo "-isystem $dir" >> $out/nix-support/libcxx-cxxflags
-        done
-
-        # FIXME: We should find a better way to modify the PATH instead of using
-        # this ugly hack. See https://jungle.bsc.es/git/rarias/bscpkgs/issues/9
-        echo 'path_backup="${gcc.cc}/bin:$path_backup"' >> $out/nix-support/cc-wrapper-hook
-
-        # Disable hardening by default
-        echo "" > $out/nix-support/add-hardening.sh
-      '' + extraBuildCommands;
-    } // (removeAttrs args ["cc" "extraBuildCommands" "extraInstall"])
-    ).overrideAttrs (old: {
-      installPhase = old.installPhase + extraInstall;
-    });
-
-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/ $out
-  '';
-
-  passthru = let
-    pkgs = mapAttrs
-      (folder: version: symlinkJoin {
-        pname = "intel-${folder}";
-        inherit version;
-        paths = ["${finalAttrs.finalPackage}/${folder}/${version}"];
-      })
-      _components;
-  in pkgs // {
-    inherit unpatched;
-    pkgs = 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 {
-      cc = finalAttrs.finalPackage.pkgs.compiler;
-      extraBuildCommands = ''
-        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
-
-        # 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
-
-        sed -i 's/.*isCxx=0/isCxx=1/' $out/bin/icpx
-
-        # oneMath looks for sycl libraries in bin/../lib
-        ln -s ${finalAttrs.finalPackage.pkgs.compiler}/lib $out/lib
-        ln -s ${finalAttrs.finalPackage.pkgs.compiler}/include $out/include
-      '';
-      extraInstall = ''
-        export named_cc="icx"
-        export named_cxx="icpx"
-        export named_fc="ifx"
-      '';
-    };
-  };
-
-}))

pkgs/intel-oneapi/process.jq

@@ -1,29 +0,0 @@
-#!/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

@@ -1,29 +0,0 @@
-#!/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

@@ -1,11 +1,4 @@
 #!/bin/sh
 
-out_64=$(mktemp intel-api.64.XXXXXX)
-out_all=$(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
+curl https://apt.repos.intel.com/oneapi/dists/all/main/binary-amd64/Packages -o amd64-packages
+curl https://apt.repos.intel.com/oneapi/dists/all/main/binary-all/Packages -o all-packages

pkgs/llvm-ompss2/default.nix

@@ -2,9 +2,7 @@
   stdenv
 , lib
 , gcc
-, gcc13
 , clangOmpss2Unwrapped
-, writeShellScript
 , openmp ? null
 , wrapCCWith
 , llvmPackages_latest
@@ -39,7 +37,10 @@ let
   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}" >> $out/nix-support/cc-cflags
@@ -56,51 +57,14 @@ let
     echo "--gcc-toolchain=${gcc}" >> $out/nix-support/cc-cflags
 
     wrap clang++  $wrapper $ccPath/clang++
+
+  '' + optionalString (openmp != null) ''
+    echo "export OPENMP_RUNTIME=${ompname}" >> $out/nix-support/cc-wrapper-hook
+  '' + optionalString (ompss2rt != null) ''
+    echo "export OMPSS2_RUNTIME=${rtname}" >> $out/nix-support/cc-wrapper-hook
+    echo "export ${homevar}=${ompss2rt}"   >> $out/nix-support/cc-wrapper-hook
+  '' + optionalString (ompss2rt != null && ompss2rt.pname == "nodes") ''
+    echo "export NOSV_HOME=${ompss2rt.nosv}" >> $out/nix-support/cc-wrapper-hook
   '';
+}
 
-  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
-      echo "export ${homevar}=${ompss2rt}"   >> $out/nix-support/cc-wrapper-hook
-    '' + optionalString (ompss2rt != null && ompss2rt.pname == "nodes") ''
-      echo "export NOSV_HOME=${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 bintools extraPackages;
-    cc = cc.override { gcc = gcc13; }; # Intel uses gcc13, so we have to match it
-    # extraPackages adds packages to depsTargetTargetPropagated
-    extraBuildCommands = intelExtraBuildCommands + envExports;
-  };
-
-in wrappedCC.overrideAttrs (oldAttrs: {
-    passthru = oldAttrs.passthru // {
-      forIcpx = wrappedCCIntel;
-    };
-  })

pkgs/lmbench/default.nix

@@ -35,6 +35,8 @@ stdenv.mkDerivation rec {
       CFLAGS=-Wno-implicit-int
       CPPFLAGS=-I${libtirpc.dev}/include/tirpc
       LDFLAGS=-ltirpc
+      CC=$CC
+      AR=$AR
     )
   '';
 

pkgs/nanos6/default.nix

@@ -16,6 +16,7 @@
 , jemallocNanos6 ? null
 , cachelineBytes ? 64
 , enableGlibcxxDebug ? false
+, enablePapi ? stdenv.hostPlatform == stdenv.buildPlatform # Disabled when cross-compiling
 , useGit ? false
 , gitUrl ? "ssh://git@bscpm04.bsc.es/nanos6/nanos6"
 , gitBranch ? "master"
@@ -47,6 +48,8 @@ let
   };
 
   source = if (useGit) then git else release;
+
+  isCross = stdenv.hostPlatform != stdenv.buildPlatform;
 in
   stdenv.mkDerivation (source // {
     pname = "nanos6";
@@ -71,9 +74,13 @@ in
       "--disable-all-instrumentations"
       "--enable-ovni-instrumentation"
       "--with-ovni=${ovni}"
+      "--with-boost=${boost.dev}"
     ] ++
       (optional enableJemalloc "--with-jemalloc=${jemallocNanos6}") ++
-      (optional enableGlibcxxDebug "CXXFLAGS=-D_GLIBCXX_DEBUG");
+      (optional enableGlibcxxDebug "CXXFLAGS=-D_GLIBCXX_DEBUG") ++
+      # Most nanos6 api symbols are resolved at runtime, so prefer
+      # ifunc by default
+      (optional isCross "--with-symbol-resolution=ifunc");
 
     postConfigure = lib.optionalString (!enableDebug) ''
       # Disable debug
@@ -97,16 +104,14 @@ in
       # TODO: papi_version is needed for configure:
       # ./configure: line 27378: papi_version: command not found
       # This probably breaks cross-compilation
-      papi
-    ];
+    ] ++ lib.optionals enablePapi [ papi ];
 
     buildInputs = [
       boost
       numactl
       hwloc
-      papi
       ovni
-    ];
+    ] ++ lib.optionals enablePapi [ papi ];
 
     # Create a script that sets NANOS6_HOME
     postInstall = ''

pkgs/nosv/default.nix

@@ -7,7 +7,7 @@
 , numactl
 , hwloc
 , papi
-, enablePapi ? true
+, enablePapi ? stdenv.hostPlatform == stdenv.buildPlatform # Disabled when cross-compiling
 , cacheline ? 64 # bits
 , ovni ? null
 , useGit ? false

pkgs/onemath/default.nix

@@ -1,84 +0,0 @@
-{ 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/ovni/default.nix

@@ -55,4 +55,7 @@ in
     doCheck = true;
     checkTarget = "test";
     hardeningDisable = [ "all" ];
+    meta = {
+      cross = true;
+    };
   }

pkgs/systems.nix

@@ -0,0 +1,4 @@
+# See https://github.com/nix-systems/nix-systems
+[
+  "x86_64-linux"
+]

pkgs/tasycl/default.nix

@@ -1,87 +0,0 @@
-{
-  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" ];
-}

test/bugs/hwloc.nix

@@ -6,6 +6,7 @@
 
 stdenv.mkDerivation {
   name = "hwloc-test";
+  requiredSystemFeatures = [ "sys-devices" ];
 
   src = ./.;
 
@@ -14,7 +15,7 @@ stdenv.mkDerivation {
   buildPhase = ''
     ls -l /sys
     gcc -lhwloc hwloc.c -o hwloc
-    strace ./hwloc
+    strace ./hwloc > $out
   '';
 
 }

test/compilers/clang-openmp-ld.nix

@@ -23,9 +23,8 @@ in stdenv.mkDerivation {
   dontUnpack = true;
   dontConfigure = true;
 
-  # nOS-V requires access to /sys/devices to request NUMA information. It will
-  # fail to run otherwise, so we disable the sandbox for this test.
-  __noChroot = true;
+  # nOS-V requires access to /sys/devices to request NUMA information
+  requiredSystemFeatures = [ "sys-devices" ];
 
   buildInputs = [ openmp ];
 

test/compilers/clang-openmp-nosv.nix

@@ -36,9 +36,8 @@ in stdenv.mkDerivation {
   dontUnpack = true;
   dontConfigure = true;
 
-  # nOS-V requires access to /sys/devices to request NUMA information. It will
-  # fail to run otherwise, so we disable the sandbox for this test.
-  __noChroot = true;
+  # nOS-V requires access to /sys/devices to request NUMA information
+  requiredSystemFeatures = [ "sys-devices" ];
 
   buildInputs = [ nosv ];
 

test/compilers/clang-openmp.nix

@@ -24,9 +24,8 @@ in stdenv.mkDerivation {
   dontUnpack = true;
   dontConfigure = true;
 
-  # nOS-V requires access to /sys/devices to request NUMA information. It will
-  # fail to run otherwise, so we disable the sandbox for this test.
-  __noChroot = true;
+  # nOS-V requires access to /sys/devices to request NUMA information
+  requiredSystemFeatures = [ "sys-devices" ];
 
   buildPhase = ''
     set -x

test/compilers/hello-sycl.nix

@@ -1,55 +0,0 @@
-{ 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

@@ -1,75 +0,0 @@
-{ 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. It will
-  # fail to run otherwise, so we disable the sandbox for this test.
-  __noChroot = true;
-
-  env.NODES_HOME = nodes;
-
-  NIX_DEBUG = 0;
-  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
-  '';
-}

test/compilers/ompss2.nix

@@ -25,9 +25,10 @@ stdenv.mkDerivation rec {
   hardeningDisable = [ "all" ];
   #NIX_DEBUG = 1;
   buildInputs = [ ]; #strace gdb;
-  # NODES requires access to /sys/devices to request NUMA information. It will
-  # fail to run otherwise, so we disable the sandbox for this test.
-  __noChroot = true;
+
+  # NODES requires access to /sys/devices to request NUMA information
+  requiredSystemFeatures = [ "sys-devices" ];
+
   buildPhase = ''
     set -x
     #$CC -v