Add install check for OpenMP{,-V}

See: https://lkml.org/lkml/2025/4/9/1709

flake.lock

@@ -2,16 +2,16 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1752436162,
-        "narHash": "sha256-Kt1UIPi7kZqkSc5HVj6UY5YLHHEzPBkgpNUByuyxtlw=",
+        "lastModified": 1764522689,
+        "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

@@ -1,12 +1,12 @@
-{ 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
-    # From bsckgs overlay
-    osumb
+    ncdu perf ldns pv
+    # From jungle overlay
+    osumb nixgen
   ];
 
   programs.direnv.enable = true;

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/fox/configuration.nix

@@ -93,20 +93,4 @@
     wantedBy = [ "multi-user.target" ];
     serviceConfig.ExecStart = script;
   };
-
-  # Only allow SSH connections from users who have a SLURM allocation
-  # See: https://slurm.schedmd.com/pam_slurm_adopt.html
-  security.pam.services.sshd.rules.account.slurm = {
-    control = "required";
-    enable = true;
-    modulePath = "${pkgs.slurm}/lib/security/pam_slurm_adopt.so";
-    args = [ "log_level=debug5" ];
-    order = 999999; # Make it last one
-  };
-
-  # Disable systemd session (pam_systemd.so) as it will conflict with the
-  # pam_slurm_adopt.so module. What happens is that the shell is first adopted
-  # into the slurmstepd task and then into the systemd session, which is not
-  # what we want, otherwise it will linger even if all jobs are gone.
-  security.pam.services.sshd.startSession = lib.mkForce false;
 }

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"
+    ];
+  };
 }

m/module/slurm-client.nix

@@ -1,4 +1,4 @@
-{ lib, ... }:
+{ lib, pkgs, ... }:
 
 {
   imports = [
@@ -21,4 +21,20 @@
   };
 
   services.slurm.client.enable = true;
+
+  # Only allow SSH connections from users who have a SLURM allocation
+  # See: https://slurm.schedmd.com/pam_slurm_adopt.html
+  security.pam.services.sshd.rules.account.slurm = {
+    control = "required";
+    enable = true;
+    modulePath = "${pkgs.slurm}/lib/security/pam_slurm_adopt.so";
+    args = [ "log_level=debug5" ];
+    order = 999999; # Make it last one
+  };
+
+  # Disable systemd session (pam_systemd.so) as it will conflict with the
+  # pam_slurm_adopt.so module. What happens is that the shell is first adopted
+  # into the slurmstepd task and then into the systemd session, which is not
+  # what we want, otherwise it will linger even if all jobs are gone.
+  security.pam.services.sshd.startSession = lib.mkForce false;
 }

m/module/slurm-common.nix

@@ -1,31 +1,6 @@
 { config, pkgs, ... }:
 
-let
-  suspendProgram = pkgs.writeShellScript "suspend.sh" ''
-    exec 1>>/var/log/power_save.log 2>>/var/log/power_save.log
-    set -x
-    export "PATH=/run/current-system/sw/bin:$PATH"
-    echo "$(date) Suspend invoked $0 $*" >> /var/log/power_save.log
-    hosts=$(scontrol show hostnames $1)
-    for host in $hosts; do
-      echo Shutting down host: $host
-      ipmitool -I lanplus -H ''${host}-ipmi -P "" -U "" chassis power off
-    done
-  '';
-
-  resumeProgram = pkgs.writeShellScript "resume.sh" ''
-    exec 1>>/var/log/power_save.log 2>>/var/log/power_save.log
-    set -x
-    export "PATH=/run/current-system/sw/bin:$PATH"
-    echo "$(date) Suspend invoked $0 $*" >> /var/log/power_save.log
-    hosts=$(scontrol show hostnames $1)
-    for host in $hosts; do
-      echo Starting host: $host
-      ipmitool -I lanplus -H ''${host}-ipmi -P "" -U "" chassis power on
-    done
-  '';
-
-in {
+{
   services.slurm = {
     controlMachine = "apex";
     clusterName = "jungle";
@@ -59,16 +34,6 @@ in {
       # the resources. Use the task/cgroup plugin to enable process containment.
       TaskPlugin=task/affinity,task/cgroup
 
-      # Power off unused nodes until they are requested
-      SuspendProgram=${suspendProgram}
-      SuspendTimeout=60
-      ResumeProgram=${resumeProgram}
-      ResumeTimeout=300
-      SuspendExcNodes=fox
-
-      # Turn the nodes off after 1 hour of inactivity
-      SuspendTime=3600
-
       # Reduce port range so we can allow only this range in the firewall
       SrunPortRange=60000-61000
 

overlay.nix

@@ -9,9 +9,6 @@ let
   bscPkgs = {
     agenix = prev.callPackage ./pkgs/agenix/default.nix { };
     amd-uprof = prev.callPackage ./pkgs/amd-uprof/default.nix { };
-    aoccUnwrapped = callPackage ./pkgs/aocc/unwrapped.nix { };
-    aocc = callPackage ./pkgs/aocc/default.nix { };
-    stdenvAocc = final.overrideCC final.stdenv final.aocc;
     bench6 = callPackage ./pkgs/bench6/default.nix { };
     bigotes = callPackage ./pkgs/bigotes/default.nix { };
     clangOmpss2 = callPackage ./pkgs/llvm-ompss2/default.nix { };
@@ -33,13 +30,15 @@ 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; };
     nanos6 = callPackage ./pkgs/nanos6/default.nix { };
     nanos6Debug = final.nanos6.override { enableDebug = true; };
     nixtools = callPackage ./pkgs/nixtools/default.nix { };
+    nixgen = callPackage ./pkgs/nixgen/default.nix { };
     # Broken because of pkgsStatic.libcap
     # See: https://github.com/NixOS/nixpkgs/pull/268791
     #nix-wrap = callPackage ./pkgs/nix-wrap/default.nix { };
@@ -50,6 +49,7 @@ let
     osumb = callPackage ./pkgs/osu/default.nix { };
     ovni = callPackage ./pkgs/ovni/default.nix { };
     ovniGit = final.ovni.override { useGit = true; };
+    papi = callPackage ./pkgs/papi/default.nix { papi = prev.papi; };
     paraverKernel = callPackage ./pkgs/paraver/kernel.nix { };
     prometheus-slurm-exporter = prev.callPackage ./pkgs/slurm-exporter/default.nix { };
     #pscom = callPackage ./pkgs/parastation/pscom.nix { }; # Unmaintaned
@@ -103,14 +103,16 @@ let
   pkgsTopLevel = filterAttrs (_: isDerivation) bscPkgs;
 
   # Native build in that platform doesn't imply cross build works
-  canCrossCompile = platform: pkg:
+  canCrossCompile = platform: default: pkg:
     (isDerivation pkg) &&
-    # Must be defined explicitly
-    (pkg.meta.cross or false) &&
-    (meta.availableOn platform pkg);
+    # If meta.cross is undefined, use default
+    (pkg.meta.cross or default) &&
+    (meta.availableOn final.pkgsCross.${platform}.stdenv.hostPlatform pkg);
 
   # For now only RISC-V
-  crossSet = { riscv64 = final.pkgsCross.riscv64.bsc.pkgsTopLevel; };
+  crossSet = genAttrs [ "riscv64" ] (platform:
+    filterAttrs (_: canCrossCompile platform true)
+      final.pkgsCross.${platform}.bsc.pkgsTopLevel);
 
   buildList = name: paths:
     final.runCommandLocal name { } ''
@@ -130,7 +132,7 @@ let
   # For now only RISC-V
   crossList = buildList "ci-cross"
     (filter
-      (canCrossCompile final.pkgsCross.riscv64.stdenv.hostPlatform)
+      (canCrossCompile "riscv64" false) # opt-in (pkgs with: meta.cross = true)
         (builtins.attrValues crossSet.riscv64));
 
 in bscPkgs // {

pkgs/amd-uprof/default.nix

@@ -47,6 +47,7 @@ in
     inherit version;
     src = uprofSrc;
     dontStrip = true;
+    strictDeps = true;
     phases = [ "installPhase" "fixupPhase" ];
     nativeBuildInputs = [ autoPatchelfHook radare2 ];
     buildInputs = [
@@ -90,7 +91,7 @@ in
     meta = {
       description = "Performance analysis tool-suite for x86 based applications";
       homepage = "https://www.amd.com/es/developer/uprof.html";
-      platforms = lib.platforms.linux;
+      platforms = [ "x86_64-linux" ];
       license = lib.licenses.unfree;
       maintainers = with lib.maintainers.bsc; [ rarias varcila ];
     };

pkgs/amd-uprof/driver.nix

@@ -18,8 +18,9 @@ in stdenv.mkDerivation {
     set +x
   '';
   hardeningDisable = [ "pic" "format" ];
+  strictDeps = true;
   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/aocc/default.nix

@@ -1,16 +0,0 @@
-{ wrapCCWith
-, aoccUnwrapped
-}:
-
-let
-  cc = aoccUnwrapped;
-in wrapCCWith {
-  inherit cc;
-
-  extraBuildCommands = ''
-    echo "-isystem ${cc}/include" >> $out/nix-support/cc-cflags
-
-    wrap aocc   $wrapper $ccPath/clang
-    wrap aocc++ $wrapper $ccPath/clang++
-  '';
-}

pkgs/aocc/unwrapped.nix

@@ -1,51 +0,0 @@
-{ lib
-, fetchurl
-, stdenv
-, autoPatchelfHook
-, rocmPackages
-, zlib
-, libffi
-, elfutils
-}:
-
-let
-  # in newer nixpkgs the runtime is hsakmt
-  rocmRuntime =
-    if rocmPackages ? hsakmt then
-      rocmPackages.hsakmt
-    else
-      rocmPackages.rocm-runtime;
-in
-stdenv.mkDerivation {
-  pname = "aocc-compiler";
-  version = "5.0.0";
-
-  src = fetchurl {
-    url = "https://download.amd.com/developer/eula/aocc/aocc-5-0/aocc-compiler-5.0.0.tar";
-    sha256 = "sha256-lm+sLSx1np3m6WnBCtp6ezBsET9/HgfqN2gp7IY4Dao=";
-  };
-
-  nativeBuildInputs = [ autoPatchelfHook ];
-  buildInputs = [
-    elfutils
-    zlib
-    rocmRuntime
-    stdenv.cc.cc.lib
-  ];
-  phases = [ "unpackPhase" "installPhase" "fixupPhase" ];
-  dontStrip = true;
-
-  installPhase = ''
-    mkdir -p $out
-    cp -a . $out/
-
-    ln -s ${lib.getLib libffi}/lib/libffi.so $out/lib/libffi.so.6
-  '';
-
-  passthru = {
-    inherit rocmRuntime;
-    isClang = true; # Needed for wrapCCWith
-  };
-
-  meta.mainProgram = "clang";
-}

pkgs/bench6/default.nix

@@ -59,6 +59,7 @@ stdenv.mkDerivation rec {
   ];
   hardeningDisable = [ "all" ];
   dontStrip = true;
+  strictDeps = true;
 
   meta = {
     homepage = "https://gitlab.pm.bsc.es/rarias/bench6";

pkgs/bigotes/default.nix

@@ -16,6 +16,8 @@ stdenv.mkDerivation {
   };
   nativeBuildInputs = [ cmake ];
 
+  strictDeps = true;
+
   meta = {
     homepage = "https://github.com/rodarima/bigotes";
     description = "Versatile benchmark tool";

pkgs/cudainfo/default.nix

@@ -1,5 +1,6 @@
 {
   stdenv
+, lib
 , cudatoolkit
 , cudaPackages
 , autoAddDriverRunpath
@@ -9,11 +10,14 @@
 stdenv.mkDerivation (finalAttrs: {
   name = "cudainfo";
   src = ./.;
-  buildInputs = [
+  strictDeps = true;
+  nativeBuildInputs = [
     cudatoolkit # Required for nvcc
-    cudaPackages.cuda_cudart.static # Required for -lcudart_static
     autoAddDriverRunpath
   ];
+  buildInputs = [
+    (lib.getOutput "static" cudaPackages.cuda_cudart) # Required for -lcudart_static
+  ];
   installPhase = ''
     mkdir -p $out/bin
     cp -a cudainfo $out/bin
@@ -22,6 +26,7 @@ stdenv.mkDerivation (finalAttrs: {
     name = "cudainfo-test";
     requiredSystemFeatures = [ "cuda" ];
     dontBuild = true;
+    strictDeps = true;
     nativeCheckInputs = [
       finalAttrs.finalPackage # The cudainfo package from above
       strace # When it fails, it will show the trace
@@ -40,4 +45,9 @@ stdenv.mkDerivation (finalAttrs: {
     '';
     installPhase = "touch $out";
   };
+
+  meta = {
+    platforms = [ "x86_64-linux" ];
+    maintainers = with lib.maintainers.bsc; [ rarias ];
+  };
 })

pkgs/extrae/default.nix

@@ -20,7 +20,7 @@
 #, python3Packages
 , installShellFiles
 , symlinkJoin
-, enablePapi ? stdenv.hostPlatform == stdenv.buildPlatform # Disabled when cross-compiling
+, enablePapi ? true
 }:
 
 let

pkgs/gpi-2/default.nix

@@ -9,7 +9,6 @@
 , automake
 , libtool
 , mpi
-, rsync
 , gfortran
 }:
 
@@ -34,6 +33,7 @@ stdenv.mkDerivation rec {
   };
 
   enableParallelBuilding = true;
+  strictDeps = true;
 
   patches = [ ./rdma-core.patch ./max-mem.patch ];
 
@@ -44,13 +44,24 @@ 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 +71,6 @@ 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";
@@ -130,6 +128,7 @@ let
 
     phases = [ "installPhase" "fixupPhase" ];
     dontStrip = true;
+    strictDeps = true;
     installPhase = ''
       mkdir -p $out/{bin,etc,lib,include}
       mkdir -p $out/share/man
@@ -181,6 +180,7 @@ let
     ];
     phases = [ "installPhase" "fixupPhase" ];
     dontStrip = true;
+    strictDeps = true;
 
     autoPatchelfIgnoreMissingDeps = [ "libhwloc.so.5" ];
 
@@ -224,6 +224,7 @@ let
     ];
     phases = [ "installPhase" "fixupPhase" ];
     dontStrip = true;
+    strictDeps = true;
 
     autoPatchelfIgnoreMissingDeps = [ "libsycl.so.6" ];
 
@@ -291,6 +292,7 @@ let
     phases = [ "installPhase" "fixupPhase" ];
 
     dontStrip = true;
+    strictDeps = true;
 
     installPhase = ''
       mkdir -p $out/{bin,lib,include}
@@ -379,6 +381,7 @@ let
     phases = [ "installPhase" "fixupPhase" ];
 
     dontStrip = true;
+    strictDeps = true;
 
     installPhase = ''
       mkdir -p $out/{bin,lib}

pkgs/llvm-ompss2/clang.nix

@@ -16,19 +16,19 @@
 , useGit ? false
 , gitUrl ? "ssh://git@bscpm04.bsc.es/llvm-ompss/llvm-mono.git"
 , gitBranch ? "master"
-, gitCommit ? "880e2341c56bad1dc14e8c369fb3356bec19018e"
+, gitCommit ? "872ba63f86edaefc9787984ef3fae9f2f94e0124" # github-release-2025.11
 }:
 
 let
   stdenv = llvmPackages_latest.stdenv;
 
   release = rec {
-    version = "2025.06";
+    version = "2025.11";
     src = fetchFromGitHub {
       owner = "bsc-pm";
       repo = "llvm";
       rev = "refs/tags/github-release-${version}";
-      hash = "sha256-ww9PpRmtz/M9IyLiZ8rAehx2UW4VpQt+svf4XfKBzKo=";
+      hash = "sha256-UgwMTUkM9Z87dDH205swZFBeFhrcbLAxginViG40pBM=";
     };
   };
 
@@ -48,6 +48,7 @@ in stdenv.mkDerivation {
   inherit (source) src version;
 
   enableParallelBuilding = true;
+  strictDeps = true;
 
   passthru = {
     CC = "clang";

pkgs/llvm-ompss2/default.nix

@@ -27,10 +27,10 @@ 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;

pkgs/llvm-ompss2/openmp.nix

@@ -39,7 +39,9 @@ stdenv.mkDerivation rec {
     perl
     pkg-config
     python3
-  ] ++ lib.optionals enableNosv [
+  ];
+
+  buildInputs = lib.optionals enableNosv [
     nosv
   ] ++ lib.optionals enableOvni [
     ovni
@@ -54,6 +56,7 @@ stdenv.mkDerivation rec {
   dontStrip = enableDebug;
 
   separateDebugInfo = true;
+  strictDeps = true;
 
   cmakeFlags = [
     "-DLIBOMP_OMPD_SUPPORT=OFF"
@@ -71,6 +74,28 @@ stdenv.mkDerivation rec {
     rm -f $out/libllvmrt/libomp.*
   '';
 
+  doInstallCheck = true;
+  # There are not cmake flags to force nOS-V, it enables it when found through
+  # pkg-config. If enableNosv is set, but we fail to find it at build time,
+  # the build will succeed but won't use nOS-V (libompv won't be created).
+  # This is a sanity check to ensure that after install we have the proper
+  # files.
+  installCheckPhase =
+    if enableNosv then
+      ''
+        test -f $out/lib/libompv.so
+        test -f $out/libllvmrt/libompv.so
+        test ! -f $out/lib/libomp.so
+        test ! -f $out/libllvmrt/libomp.so
+      ''
+    else
+      ''
+        test -f $out/lib/libomp.so
+        test -f $out/libllvmrt/libomp.so
+        test ! -f $out/lib/libompv.so
+        test ! -f $out/libllvmrt/libompv.so
+      '';
+
   passthru = {
     inherit nosv;
   };

pkgs/lmbench/default.nix

@@ -27,6 +27,7 @@ stdenv.mkDerivation rec {
   hardeningDisable = [ "all" ];
 
   enableParallelBuilding = false;
+  strictDeps = true;
 
   preBuild = ''
     makeFlagsArray+=(

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

@@ -1,12 +1,15 @@
 { python3Packages, lib }:
 
-python3Packages.buildPythonApplication rec {
+python3Packages.buildPythonApplication {
   pname = "meteocat-exporter";
   version = "1.0";
 
+  pyproject = true;
+
   src = ./.;
 
   doCheck = false;
+  strictDeps = true;
 
   build-system = with python3Packages; [
     setuptools

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 +41,22 @@ 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" ];
+  strictDeps = true;
 
   meta = old.meta // {
     maintainers = old.meta.maintainers ++ (with lib.maintainers.bsc; [ rarias ]);
+    cross = true;
   };
 })

pkgs/nanos6/check-papi-version-with-pkgconfig.patch

@@ -0,0 +1,67 @@
+diff --git a/m4/papi.m4 b/m4/papi.m4
+--- a/m4/papi.m4
++++ b/m4/papi.m4
+@@ -24,12 +24,13 @@ AC_DEFUN([AC_CHECK_PAPI],
+ 		else
+ 			PKG_CHECK_MODULES(
+ 				[papi],
+-				[papi],
++				[papi >= 5.6.0],
+ 				[
+ 					AC_MSG_CHECKING([the PAPI installation prefix])
+ 					AC_MSG_RESULT([retrieved from pkg-config])
+ 					papi_CPPFLAGS="${papi_CFLAGS}"
+ 					ac_use_papi=yes
++					ac_papi_version_correct=yes
+ 				], [
+ 					AC_MSG_CHECKING([the PAPI installation prefix])
+ 					AC_MSG_RESULT([not available])
+@@ -67,27 +68,29 @@ AC_DEFUN([AC_CHECK_PAPI],
+ 		fi
+ 
+ 		if test x"${ac_use_papi}" = x"yes" ; then
+-			if test x"${ac_cv_use_papi_prefix}" != x"" ; then
+-				papiBinary=${ac_cv_use_papi_prefix}/bin/papi_version
+-			else
+-				papiBinary=papi_version
+-			fi
+-			papiVersion=`$papiBinary | sed 's/[[^0-9.]]*\([[0-9.]]*\).*/\1/'`
++			if test x"${ac_papi_version_correct}" != x"yes" ; then
++				if test x"${ac_cv_use_papi_prefix}" != x"" ; then
++					papiBinary=${ac_cv_use_papi_prefix}/bin/papi_version
++				else
++					papiBinary=papi_version
++				fi
++				papiVersion=`$papiBinary | sed 's/[[^0-9.]]*\([[0-9.]]*\).*/\1/'`
+ 
+-			AX_COMPARE_VERSION(
+-				[[${papiVersion}]],
+-				[[ge]],
+-				[[5.6.0]],
+-				[[ac_papi_version_correct=yes]],
+-				[[ac_papi_version_correct=no]]
+-			)
++				AX_COMPARE_VERSION(
++					[[${papiVersion}]],
++					[[ge]],
++					[[5.6.0]],
++					[[ac_papi_version_correct=yes]],
++					[[ac_papi_version_correct=no]]
++				)
+ 
+-			if test x"${ac_papi_version_correct}" != x"yes" ; then
+-				AC_MSG_ERROR([PAPI version must be >= 5.6.0.])
+-				ac_use_papi=no
+-			else
+-				AC_MSG_CHECKING([if the PAPI version >= 5.6.0.])
+-				AC_MSG_RESULT([${ac_papi_version_correct}])
++				if test x"${ac_papi_version_correct}" != x"yes" ; then
++					AC_MSG_ERROR([PAPI version must be >= 5.6.0.])
++					ac_use_papi=no
++				else
++					AC_MSG_CHECKING([if the PAPI version >= 5.6.0.])
++					AC_MSG_RESULT([${ac_papi_version_correct}])
++				fi
+ 			fi
+ 		fi
+ 

pkgs/nanos6/default.nix

@@ -16,7 +16,7 @@
 , jemallocNanos6 ? null
 , cachelineBytes ? 64
 , enableGlibcxxDebug ? false
-, enablePapi ? stdenv.hostPlatform == stdenv.buildPlatform # Disabled when cross-compiling
+, enablePapi ? true
 , useGit ? false
 , gitUrl ? "ssh://git@bscpm04.bsc.es/nanos6/nanos6"
 , gitBranch ? "master"
@@ -95,16 +95,15 @@ in
     dontStrip = enableDebug;
     separateDebugInfo = true;
 
+    strictDeps = true;
+    patches = [ ./check-papi-version-with-pkgconfig.patch ];
+
     nativeBuildInputs = [
       autoconf
       automake
       libtool
       pkg-config
-
-      # TODO: papi_version is needed for configure:
-      # ./configure: line 27378: papi_version: command not found
-      # This probably breaks cross-compilation
-    ] ++ lib.optionals enablePapi [ papi ];
+    ];
 
     buildInputs = [
       boost

pkgs/nixgen/default.nix

@@ -0,0 +1,23 @@
+{
+  stdenv
+, lib
+}:
+
+stdenv.mkDerivation {
+  pname = "nixgen";
+  version = "0.0.1";
+  src = ./nixgen;
+  dontUnpack = true;
+  strictDeps = true;
+  phases = [ "installPhase" ];
+  installPhase = ''
+    mkdir -p $out/bin
+    cp -a $src $out/bin/nixgen
+  '';
+  meta = {
+    description = "Quickly generate flake.nix from command line";
+    maintainers = with lib.maintainers.bsc; [ rarias ];
+    platforms = lib.platforms.linux;
+    license = lib.licenses.gpl3Plus;
+  };
+}

pkgs/nixgen/nixgen

@@ -0,0 +1,97 @@
+#!/bin/sh
+#
+# Copyright (c) 2025, Barcelona Supercomputing Center (BSC)
+# SPDX-License-Identifier: GPL-3.0+
+# Author: Rodrigo Arias Mallo <rodrigo.arias@bsc.es>
+
+function usage() {
+  echo "USAGE: nixgen [-f] [package [...]] [-b package [...]]" >&2
+  echo "  Generates a flake.nix file with the given packages." >&2
+  echo "  After flake.nix is created, use 'nix develop' to enter the shell." >&2
+  echo "OPTIONS" >&2
+  echo "  -f               Overwrite existing flake.nix (default: no)." >&2
+  echo "  packages...      Add these packages to the shell." >&2
+  echo "  -b packages...   Add the dependencies needed to build these packages." >&2
+  echo "EXAMPLE" >&2
+  echo "  $ nixgen ovni bigotes -b nosv tampi" >&2
+  echo "  Adds the packages ovni and bigotes as well as all required dependencies" >&2
+  echo "  to build nosv and tampi." >&2
+  echo "AUTHOR" >&2
+  echo "  Rodrigo Arias Mallo <rodrigo.arias@bsc.es>" >&2
+  exit 1
+}
+
+mode=package
+packages=
+inputsFrom=
+force=
+
+if [[ $# -eq 0 ]]; then
+  usage
+fi
+
+while [[ $# -gt 0 ]]; do
+    case $1 in -b)
+      mode=build
+      shift
+      ;;
+    -f)
+      force=1
+      shift
+      ;;
+    -h)
+      usage
+      ;;
+    -*|--*)
+      echo "error: unknown option $1" >&2
+      exit 1
+      ;;
+    *)
+      if [ "$mode" == "package" ]; then
+        packages+="${packages:+ }$1"
+      else
+        inputsFrom+="${inputsFrom:+ }$1"
+      fi
+      shift
+      ;;
+  esac
+done
+
+if [ ! "$force" -a -e flake.nix ]; then
+  echo "error: flake.nix exists, force overwrite with -f" >&2
+  exit 1
+fi
+
+cat > flake.nix <<EOF
+{
+  inputs.jungle.url = "git+https://jungle.bsc.es/git/rarias/jungle";
+  outputs = { self, jungle }:
+  let
+    nixpkgs = jungle.inputs.nixpkgs;
+    customOverlay = (final: prev: {
+      # Example overlay, for now empty
+    });
+    pkgs = import nixpkgs {
+      system = "x86_64-linux";
+      overlays = [
+        # Apply jungle overlay to get our BSC custom packages
+        jungle.outputs.bscOverlay
+        # And on top apply our local changes to customize for cluster
+        customOverlay
+      ];
+    };
+  in {
+    devShells.x86_64-linux.default = pkgs.mkShell {
+      pname = "devshell";
+      # Include these packages in the shell
+      packages = with pkgs; [
+        $packages
+      ];
+      # The dependencies needed to build these packages will be also included
+      inputsFrom = with pkgs; [
+        $inputsFrom
+      ];
+    };
+  };
+}
+EOF

pkgs/nixtools/default.nix

@@ -16,6 +16,7 @@ stdenv.mkDerivation rec {
   makeFlags = [ "DESTDIR=$(out)" ];
   preBuild = "env";
   dontPatchShebangs = true;
+  strictDeps = true;
 
   meta = {
     homepage = "https://gitlab.pm.bsc.es/rarias/nixtools";

pkgs/nodes/default.nix

@@ -14,19 +14,19 @@
 , useGit ? false
 , gitUrl ? "ssh://git@gitlab-internal.bsc.es/nos-v/nodes.git"
 , gitBranch ? "master"
-, gitCommit ? "6002ec9ae6eb876d962cc34366952a3b26599ba6"
+, gitCommit ? "511489e71504a44381e0930562e7ac80ac69a848" # version-1.4
 }:
 
 with lib;
 
 let
   release = rec {
-    version = "1.3";
+    version = "1.4";
     src = fetchFromGitHub {
       owner = "bsc-pm";
       repo = "nodes";
       rev = "version-${version}";
-      hash = "sha256-cFb9pxcjtkMmH0CsGgUO9LTdXDNh7MCqicgGWawLrsU=";
+      hash = "sha256-+lR/R0l3fGZO3XG7whMorFW2y2YZ0ZFnLeOHyQYrAsQ=";
     };
   };
 
@@ -48,6 +48,7 @@ in
     enableParallelBuilding = true;
     dontStrip = true;
     separateDebugInfo = true;
+    strictDeps = true;
 
     configureFlags = [
       "--with-nosv=${nosv}"

pkgs/nosv/check-papi-version-with-pkgconfig.patch

@@ -0,0 +1,68 @@
+diff --git a/m4/papi.m4 b/m4/papi.m4
+index de905848..fa3db9a1 100644
+--- a/m4/papi.m4
++++ b/m4/papi.m4
+@@ -24,12 +24,13 @@ AC_DEFUN([AC_CHECK_PAPI],
+ 		else
+ 			PKG_CHECK_MODULES(
+ 				[papi],
+-				[papi],
++				[papi >= 5.6.0],
+ 				[
+ 					AC_MSG_CHECKING([the PAPI installation prefix])
+ 					AC_MSG_RESULT([retrieved from pkg-config])
+ 					papi_CFLAGS="${papi_CFLAGS}"
+ 					ac_use_papi=yes
++					ac_papi_version_correct=yes
+ 				], [
+ 					AC_MSG_CHECKING([the PAPI installation prefix])
+ 					AC_MSG_RESULT([not available])
+@@ -67,27 +68,29 @@ AC_DEFUN([AC_CHECK_PAPI],
+ 		fi
+ 
+ 		if test x"${ac_use_papi}" = x"yes" ; then
+-			if test x"${ac_cv_use_papi_prefix}" != x"" ; then
+-				papiBinary=${ac_cv_use_papi_prefix}/bin/papi_version
+-			else
+-				papiBinary=papi_version
+-			fi
+-			papiVersion=`$papiBinary | sed 's/[[^0-9.]]*\([[0-9.]]*\).*/\1/'`
++			if test x"${ac_papi_version_correct}" != x"yes" ; then
++				if test x"${ac_cv_use_papi_prefix}" != x"" ; then
++					papiBinary=${ac_cv_use_papi_prefix}/bin/papi_version
++				else
++					papiBinary=papi_version
++				fi
++				papiVersion=`$papiBinary | sed 's/[[^0-9.]]*\([[0-9.]]*\).*/\1/'`
+ 
+-			AX_COMPARE_VERSION(
+-				[[${papiVersion}]],
+-				[[ge]],
+-				[[5.6.0]],
+-				[[ac_papi_version_correct=yes]],
+-				[[ac_papi_version_correct=no]]
+-			)
++				AX_COMPARE_VERSION(
++					[[${papiVersion}]],
++					[[ge]],
++					[[5.6.0]],
++					[[ac_papi_version_correct=yes]],
++					[[ac_papi_version_correct=no]]
++				)
+ 
+-			if test x"${ac_papi_version_correct}" != x"yes" ; then
+-				AC_MSG_ERROR([PAPI version must be >= 5.6.0.])
+-				ac_use_papi=no
+-			else
+-				AC_MSG_CHECKING([if the PAPI version >= 5.6.0.])
+-				AC_MSG_RESULT([${ac_papi_version_correct}])
++				if test x"${ac_papi_version_correct}" != x"yes" ; then
++					AC_MSG_ERROR([PAPI version must be >= 5.6.0.])
++					ac_use_papi=no
++				else
++					AC_MSG_CHECKING([if the PAPI version >= 5.6.0.])
++					AC_MSG_RESULT([${ac_papi_version_correct}])
++				fi
+ 			fi
+ 		fi
+ 

pkgs/nosv/default.nix

@@ -7,25 +7,25 @@
 , numactl
 , hwloc
 , papi
-, enablePapi ? stdenv.hostPlatform == stdenv.buildPlatform # Disabled when cross-compiling
+, enablePapi ? true
 , cacheline ? 64 # bits
 , ovni ? null
 , useGit ? false
 , gitUrl ? "git@gitlab-internal.bsc.es:nos-v/nos-v.git"
 , gitBranch ? "master"
-, gitCommit ? "9f47063873c3aa9d6a47482a82c5000a8c813dd8"
+, gitCommit ? "1108e4786b58e0feb9a16fa093010b763eb2f8e8" # version 4.0.0
 }:
 
 with lib;
 
 let
   release = rec {
-    version = "3.2.0";
+    version = "4.0.0";
     src = fetchFromGitHub {
       owner = "bsc-pm";
       repo = "nos-v";
       rev = "${version}";
-      hash = "sha256-yaz92426EM8trdkBJlISmAoG9KJCDTvoAW/HKrasvOw=";
+      hash = "sha256-llaq73bd/YxLVKNlMebnUHKa4z3sdcsuDUoVwUxNuw8=";
     };
   };
 
@@ -40,12 +40,14 @@ let
 
   source = if (useGit) then git else release;
 in
-  stdenv.mkDerivation rec {
+  stdenv.mkDerivation {
     pname = "nosv";
     inherit (source) src version;
     hardeningDisable = [ "all" ];
     dontStrip = true;
     separateDebugInfo = true;
+    strictDeps = true;
+    patches = [ ./check-papi-version-with-pkgconfig.patch ];
     configureFlags = [
       "--with-ovni=${ovni}"
       "CACHELINE_WIDTH=${toString cacheline}"

pkgs/osu/default.nix

@@ -24,6 +24,7 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
   enableParallelBuilding = true;
+  strictDeps = true;
   nativeBuildInputs = [ mpiAll ];
   buildInputs = [ mpiAll ];
   hardeningDisable = [ "all" ];
@@ -32,6 +33,11 @@ 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 +50,6 @@ stdenv.mkDerivation rec {
     homepage = "http://mvapich.cse.ohio-state.edu/benchmarks/";
     maintainers = [ ];
     platforms = lib.platforms.all;
+    cross = true;
   };
 }

pkgs/ovni/default.nix

@@ -7,7 +7,7 @@
 , useGit ? false
 , gitBranch ? "master"
 , gitUrl ? "ssh://git@bscpm04.bsc.es/rarias/ovni.git"
-, gitCommit ? "e4f62382076f0cf0b1d08175cf57cc0bc51abc61"
+, gitCommit ? "06432668f346c8bdc1006fabc23e94ccb81b0d8b" # version 1.13.0
 , enableDebug ? false
 # Only enable MPI if the build is native (fails on cross-compilation)
 , useMpi ? (stdenv.buildPlatform.canExecute stdenv.hostPlatform)
@@ -15,13 +15,13 @@
 
 let
   release = rec {
-    version = "1.12.0";
+    version = "1.13.0";
     src = fetchFromGitHub {
       owner = "bsc-pm";
       repo = "ovni";
       rev = "${version}";
-      hash = "sha256-H04JvsVKrdqr3ON7JhU0g17jjlg/jzQ7eTfx9vUNd3E=";
-    } // { shortRev = "a73afcf"; };
+      hash = "sha256-0l2ryIyWNiZqeYdVlnj/WnQGS3xFCY4ICG8JedX424w=";
+    } // { shortRev = "0643266"; };
   };
 
   git = rec {
@@ -40,6 +40,7 @@ in
     inherit (source) src version;
     dontStrip = true;
     separateDebugInfo = true;
+    strictDeps = true;
     postPatch = ''
       patchShebangs --build test/
     '';

pkgs/papi/default.nix

@@ -0,0 +1,22 @@
+{
+  stdenv,
+  papi,
+}:
+
+if stdenv.hostPlatform == stdenv.buildPlatform then
+  papi
+else
+  papi.overrideAttrs (old: {
+    configureFlags = (old.configureFlags or [ ]) ++ [
+      "--enable-perf_event_uncore=no"
+      "--with-sysdetect=no"
+      "--with-ffsll"
+      "--with-tls=__thread"
+      "--with-virtualtimer=clock_thread_cputime_id"
+      "--with-walltimer=clock_realtime"
+      "--with-perf-events"
+      "--with-CPU=${stdenv.hostPlatform.uname.processor}"
+      "--with-arch=${stdenv.hostPlatform.uname.processor}"
+    ];
+    patches = (old.patches or [ ]) ++ [ ./fix-ar-cross.patch ];
+  })

pkgs/papi/fix-ar-cross.patch

@@ -0,0 +1,19 @@
+diff --git a/sde_lib/Makefile b/sde_lib/Makefile
+index 8518f92..90a9953 100644
+--- a/sde_lib/Makefile
++++ b/sde_lib/Makefile
+@@ -1,4 +1,5 @@
+ CC ?= gcc
++AR ?= ar
+ SDE_INC = -I. -I..
+ SDE_LD = -ldl -pthread
+ CFLAGS += -Wextra -Wall -O2
+@@ -18,7 +19,7 @@ dynamic: $(DOBJS)
+ 	rm -f *_d.o
+ 
+ static: $(SOBJS)
+-	ar rs libsde.a $(SOBJS)
++	$(AR) rs libsde.a $(SOBJS)
+ 	rm -f *_s.o
+ 
+ clean:

pkgs/paraver/default.nix

@@ -12,7 +12,7 @@
 , paraverKernel
 , openssl
 , glibcLocales
-, wrapGAppsHook
+, wrapGAppsHook3
 }:
 
 let
@@ -47,6 +47,7 @@ stdenv.mkDerivation rec {
 
   dontStrip = true;
   enableParallelBuilding = true;
+  strictDeps = true;
 
   preConfigure = ''
     export CFLAGS="-O3"
@@ -64,7 +65,7 @@ stdenv.mkDerivation rec {
     autoconf
     automake
     autoreconfHook
-    wrapGAppsHook
+    wrapGAppsHook3
   ];
 
   buildInputs = [

pkgs/paraver/kernel.nix

@@ -34,6 +34,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   dontStrip = true;
+  strictDeps = true;
 
   preConfigure = ''
     export CFLAGS="-O3 -DPARALLEL_ENABLED"

pkgs/slurm-exporter/default.nix

@@ -13,6 +13,7 @@ buildGoModule rec {
 
   vendorHash = "sha256-A1dd9T9SIEHDCiVT2UwV6T02BSLh9ej6LC/2l54hgwI=";
   doCheck = false;
+  strictDeps = true;
 
   meta = with lib; {
     description = "Prometheus SLURM Exporter";

pkgs/sonar/default.nix

@@ -18,6 +18,7 @@ stdenv.mkDerivation rec {
   };
   hardeningDisable = [ "all" ];
   dontStrip = true;
+  strictDeps = true;
   configureFlags = [ "--with-ovni=${ovni}" ];
 
   nativeBuildInputs = [
@@ -35,5 +36,6 @@ stdenv.mkDerivation rec {
     maintainers = with lib.maintainers.bsc; [ rarias ];
     platforms = lib.platforms.linux;
     license = lib.licenses.mit;
+    cross = true;
   };
 }

pkgs/tagaspi/default.nix

@@ -5,27 +5,19 @@
 , 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;
   separateDebugInfo = true;
+  strictDeps = true;
 
   version = "2.0";
   src = fetchFromGitHub {
@@ -35,16 +27,18 @@ 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 +57,6 @@ 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

@@ -45,6 +45,7 @@ in stdenv.mkDerivation {
   inherit (source) src version;
   enableParallelBuilding = true;
   separateDebugInfo = true;
+  strictDeps = true;
 
   nativeBuildInputs = [
     autoconf
@@ -68,5 +69,6 @@ in stdenv.mkDerivation {
     maintainers = with lib.maintainers.bsc; [ rarias ];
     platforms = lib.platforms.linux;
     license = lib.licenses.gpl3Plus;
+    cross = true;
   };
 }

pkgs/upc-qaire-exporter/default.nix

@@ -1,12 +1,15 @@
 { python3Packages, lib }:
 
-python3Packages.buildPythonApplication rec {
+python3Packages.buildPythonApplication {
   pname = "upc-qaire-exporter";
   version = "1.0";
 
+  pyproject = true;
+
   src = ./.;
 
   doCheck = false;
+  strictDeps = true;
 
   build-system = with python3Packages; [
     setuptools

test/compilers/clang-openmp-ld.nix

@@ -23,9 +23,6 @@ in stdenv.mkDerivation {
   dontUnpack = true;
   dontConfigure = true;
 
-  # nOS-V requires access to /sys/devices to request NUMA information
-  requiredSystemFeatures = [ "sys-devices" ];
-
   buildInputs = [ openmp ];
 
   buildPhase = ''