Use correct serial console ttyS1 in fox

Allow booting an old LTS kernel to compare performance.

m/common/base/boot.nix

@@ -4,13 +4,6 @@
   # Use the GRUB 2 boot loader.
   boot.loader.grub.enable = true;
 
-  # Enable GRUB2 serial console
-  boot.loader.grub.extraConfig = ''
-    serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1
-    terminal_input --append serial
-    terminal_output --append serial
-  '';
-
   boot.kernel.sysctl = {
     "kernel.perf_event_paranoid" = lib.mkDefault "-1";
 

m/common/xeon/console.nix

@@ -11,4 +11,11 @@
     "console=tty1"
     "console=ttyS0,115200"
   ];
+
+  # Enable GRUB2 serial console
+  boot.loader.grub.extraConfig = ''
+    serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1
+    terminal_input --append serial
+    terminal_output --append serial
+  '';
 }

m/fox/configuration.nix

@@ -3,13 +3,13 @@
 {
   imports = [
     ../common/base.nix
-    ../common/xeon/console.nix
     ../module/amd-uprof.nix
     ../module/emulation.nix
     ../module/nvidia.nix
     ../module/slurm-client.nix
     ../module/hut-substituter.nix
     ./wireguard.nix
+    ./serial-console.nix
   ];
 
   # Don't turn off on August as UPC has different dates.
@@ -19,6 +19,9 @@
   # Select the this using the ID to avoid mismatches
   boot.loader.grub.device = "/dev/disk/by-id/wwn-0x500a07514b0c1103";
 
+  # Increase time so we can boot other entries
+  boot.loader.timeout = 60;
+
   # No swap, there is plenty of RAM
   swapDevices = lib.mkForce [];
 
@@ -31,7 +34,10 @@
   # Use performance for benchmarks
   powerManagement.cpuFreqGovernor = "performance";
 
-  services.amd-uprof.enable = true;
+  # Enable amd-uprof in >= 6.15 kernels only
+  services.amd-uprof.enable =
+    let ver = config.boot.kernelPackages.kernel.version;
+    in (lib.strings.compareVersions ver "6.15") >= 0;
 
   # Disable NUMA balancing
   boot.kernel.sysctl."kernel.numa_balancing" = 0;
@@ -42,6 +48,11 @@
   # Disable NMI watchdog to save one hw counter (for AMD uProf)
   boot.kernel.sysctl."kernel.nmi_watchdog" = 0;
 
+  specialisation.oldKernel.configuration = {
+    system.nixos.tags = [ "old-kernel" ];
+    boot.kernelPackages = lib.mkForce pkgs.linuxPackages_6_12;
+  };
+
   services.openssh.settings.X11Forwarding = true;
 
   services.fail2ban.enable = true;

m/fox/serial-console.nix

@@ -0,0 +1,21 @@
+{
+  # Restart the serial console
+  systemd.services."serial-getty@ttyS1" = {
+    enable = true;
+    wantedBy = [ "getty.target" ];
+    serviceConfig.Restart = "always";
+  };
+
+  # Enable serial console
+  boot.kernelParams = [
+    "console=tty1"
+    "console=ttyS1,115200"
+  ];
+
+  # Enable GRUB2 serial console
+  boot.loader.grub.extraConfig = ''
+    serial --unit=1 --speed=115200 --word=8 --parity=no --stop=1
+    terminal_input --append serial
+    terminal_output --append serial
+  '';
+}

m/owl1/configuration.nix

@@ -20,7 +20,7 @@
       address = "10.0.40.1";
       prefixLength = 24;
     } ];
-    interfaces.ibp5s0.ipv4.addresses = [ {
+    interfaces.ibs785.ipv4.addresses = [ {
       address = "10.0.42.1";
       prefixLength = 24;
     } ];

m/owl2/configuration.nix

@@ -21,7 +21,7 @@
       prefixLength = 24;
     } ];
     # Watch out! The OmniPath device is not in the same place here:
-    interfaces.ibp129s0.ipv4.addresses = [ {
+    interfaces.ibs801.ipv4.addresses = [ {
       address = "10.0.42.2";
       prefixLength = 24;
     } ];

m/raccoon/configuration.nix

@@ -4,6 +4,7 @@
   imports = [
     ../common/base.nix
     ../common/ssf/hosts.nix
+    ../common/xeon/console.nix
     ../module/emulation.nix
     ../module/debuginfod.nix
     ../module/nvidia.nix

overlay.nix

@@ -49,17 +49,16 @@ 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
     #psmpi = callPackage ./pkgs/parastation/psmpi.nix { }; # Unmaintaned
     slurm = import ./pkgs/slurm/default.nix { slurm = prev.slurm; };
     sonar = callPackage ./pkgs/sonar/default.nix { };
-    stdenvClangOmpss2 = final.stdenv.override { cc = final.buildPackages.clangOmpss2; allowedRequisites = null; };
-    stdenvClangOmpss2Nanos6 = final.stdenv.override { cc = final.buildPackages.clangOmpss2Nanos6; allowedRequisites = null; };
-    stdenvClangOmpss2Nodes = final.stdenv.override { cc = final.buildPackages.clangOmpss2Nodes; allowedRequisites = null; };
-    stdenvClangOmpss2NodesOmpv = final.stdenv.override { cc = final.buildPackages.clangOmpss2NodesOmpv; allowedRequisites = null; };
+    stdenvClangOmpss2 = final.stdenv.override { cc = final.clangOmpss2; allowedRequisites = null; };
+    stdenvClangOmpss2Nanos6 = final.stdenv.override { cc = final.clangOmpss2Nanos6; allowedRequisites = null; };
+    stdenvClangOmpss2Nodes = final.stdenv.override { cc = final.clangOmpss2Nodes; allowedRequisites = null; };
+    stdenvClangOmpss2NodesOmpv = final.stdenv.override { cc = final.clangOmpss2NodesOmpv; allowedRequisites = null; };
     tagaspi = callPackage ./pkgs/tagaspi/default.nix { };
     tampi = callPackage ./pkgs/tampi/default.nix { };
     upc-qaire-exporter = prev.callPackage ./pkgs/upc-qaire-exporter/default.nix { };

pkgs/amd-uprof/default.nix

@@ -47,7 +47,6 @@ in
     inherit version;
     src = uprofSrc;
     dontStrip = true;
-    strictDeps = true;
     phases = [ "installPhase" "fixupPhase" ];
     nativeBuildInputs = [ autoPatchelfHook radare2 ];
     buildInputs = [

pkgs/amd-uprof/driver.nix

@@ -18,7 +18,6 @@ in stdenv.mkDerivation {
     set +x
   '';
   hardeningDisable = [ "pic" "format" ];
-  strictDeps = true;
   nativeBuildInputs = kernel.moduleBuildDependencies;
   patches = [ ./makefile.patch ./hrtimer.patch ./remove-wr-rdmsrq.patch ];
   makeFlags = [

pkgs/bench6/default.nix

@@ -9,13 +9,15 @@
 , nanos6
 , nodes
 , nosv
+, mkl
 , mpi
 , tampi
 , openblas
 , ovni
 , gitBranch ? "master"
 , gitURL ? "ssh://git@bscpm04.bsc.es/rarias/bench6.git"
-, gitCommit ? "bf29a53113737c3aa74d2fe3d55f59868faea7b4"
+, gitCommit ? "fe30c2cfe36b535ef26a0054e010bc005e88ba04"
+, useMkl ? true
 }:
 
 stdenv.mkDerivation rec {
@@ -42,10 +44,13 @@ stdenv.mkDerivation rec {
     nosv
     mpi
     tampi
+    ovni
+  ] ++ (if (useMkl) then [
+    mkl
+  ] else [
     openblas
     openblas.dev
-    ovni
-  ];
+  ]);
 
   env = {
     NANOS6_HOME = nanos6;
@@ -59,7 +64,6 @@ stdenv.mkDerivation rec {
   ];
   hardeningDisable = [ "all" ];
   dontStrip = true;
-  strictDeps = true;
 
   meta = {
     homepage = "https://gitlab.pm.bsc.es/rarias/bench6";

pkgs/bigotes/default.nix

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

pkgs/cudainfo/default.nix

@@ -10,13 +10,10 @@
 stdenv.mkDerivation (finalAttrs: {
   name = "cudainfo";
   src = ./.;
-  strictDeps = true;
-  nativeBuildInputs = [
-    cudatoolkit # Required for nvcc
-    autoAddDriverRunpath
-  ];
   buildInputs = [
+    cudatoolkit # Required for nvcc
     (lib.getOutput "static" cudaPackages.cuda_cudart) # Required for -lcudart_static
+    autoAddDriverRunpath
   ];
   installPhase = ''
     mkdir -p $out/bin
@@ -26,7 +23,6 @@ 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

pkgs/extrae/default.nix

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

pkgs/gpi-2/default.nix

@@ -33,7 +33,6 @@ stdenv.mkDerivation rec {
   };
 
   enableParallelBuilding = true;
-  strictDeps = true;
 
   patches = [ ./rdma-core.patch ./max-mem.patch ];
 

pkgs/intel-oneapi/2023.nix

@@ -128,7 +128,6 @@ let
 
     phases = [ "installPhase" "fixupPhase" ];
     dontStrip = true;
-    strictDeps = true;
     installPhase = ''
       mkdir -p $out/{bin,etc,lib,include}
       mkdir -p $out/share/man
@@ -180,7 +179,6 @@ let
     ];
     phases = [ "installPhase" "fixupPhase" ];
     dontStrip = true;
-    strictDeps = true;
 
     autoPatchelfIgnoreMissingDeps = [ "libhwloc.so.5" ];
 
@@ -224,7 +222,6 @@ let
     ];
     phases = [ "installPhase" "fixupPhase" ];
     dontStrip = true;
-    strictDeps = true;
 
     autoPatchelfIgnoreMissingDeps = [ "libsycl.so.6" ];
 
@@ -292,7 +289,6 @@ let
     phases = [ "installPhase" "fixupPhase" ];
 
     dontStrip = true;
-    strictDeps = true;
 
     installPhase = ''
       mkdir -p $out/{bin,lib,include}
@@ -381,7 +377,6 @@ let
     phases = [ "installPhase" "fixupPhase" ];
 
     dontStrip = true;
-    strictDeps = true;
 
     installPhase = ''
       mkdir -p $out/{bin,lib}

pkgs/llvm-ompss2/clang.nix

@@ -1,9 +1,9 @@
 {
-  stdenv
-, llvmPackages_latest
+  llvmPackages_latest
 , lib
 , fetchFromGitHub
 , cmake
+, bash
 , python3
 , perl
 , which
@@ -11,6 +11,7 @@
 , libffi
 , zlib
 , pkg-config
+, gcc # needed to set the rpath of libstdc++ for clang-tblgen
 , enableDebug ? false
 , useGit ? false
 , gitUrl ? "ssh://git@bscpm04.bsc.es/llvm-ompss/llvm-mono.git"
@@ -19,10 +20,7 @@
 }:
 
 let
-  llvmPackages = llvmPackages_latest;
-  llvmStdenv = llvmPackages.stdenv;
-  # needed to set the rpath of libstdc++ for clang-tblgen
-  gcc = stdenv.cc;
+  stdenv = llvmPackages_latest.stdenv;
 
   release = rec {
     version = "2025.11";
@@ -45,12 +43,11 @@ let
 
   source = if (useGit) then git else release;
 
-in llvmStdenv.mkDerivation {
+in stdenv.mkDerivation {
   pname = "clang-ompss2";
   inherit (source) src version;
 
   enableParallelBuilding = true;
-  strictDeps = true;
 
   passthru = {
     CC = "clang";
@@ -63,12 +60,13 @@ in llvmStdenv.mkDerivation {
   };
 
   nativeBuildInputs = [
+    bash
     cmake
     elfutils
-    llvmPackages.lld
-    perl
+    llvmPackages_latest.lld
     pkg-config
     python3
+    perl
     which
     zlib
   ];
@@ -99,13 +97,8 @@ in llvmStdenv.mkDerivation {
     cd build
     cmakeDir="../llvm"
     cmakeFlagsArray=(
-      "-DLLVM_HOST_TRIPLE=${llvmStdenv.targetPlatform.config}"
-    '' + (if "${llvmStdenv.targetPlatform.config}" == "riscv64-unknown-linux-gnu" then ''
-      "-DLLVM_DEFAULT_TARGET_TRIPLE=riscv64-unknown-linux-gnu"
-      "-DLLVM_TARGETS_TO_BUILD=RISCV"
-    '' else ''
+      "-DLLVM_HOST_TRIPLE=${stdenv.targetPlatform.config}"
       "-DLLVM_TARGETS_TO_BUILD=host"
-    '') + ''
       "-DLLVM_BUILD_LLVM_DYLIB=ON"
       "-DLLVM_LINK_LLVM_DYLIB=ON"
       # Required to run clang-ast-dump and clang-tblgen during build
@@ -114,8 +107,7 @@ in llvmStdenv.mkDerivation {
       "-DCMAKE_CXX_FLAGS_DEBUG=-g -ggnu-pubnames"
       "-DCMAKE_EXE_LINKER_FLAGS_DEBUG=-Wl,--gdb-index"
       "-DLLVM_LIT_ARGS=-sv --xunit-xml-output=xunit.xml"
-      "-DLLVM_ENABLE_PROJECTS=clang;lld"
-      "-DLLVM_ENABLE_RUNTIMES=compiler-rt"
+      "-DLLVM_ENABLE_PROJECTS=clang;compiler-rt;lld"
       "-DLLVM_ENABLE_ASSERTIONS=ON"
       "-DLLVM_INSTALL_TOOLCHAIN_ONLY=ON"
       "-DCMAKE_INSTALL_BINDIR=bin"

pkgs/llvm-ompss2/default.nix

@@ -37,7 +37,7 @@ let
   inherit gcc;
   cc = clangOmpss2Unwrapped;
   gccVersion = with versions; let v = gcc.version; in concatStringsSep "." [(major v) (minor v) (patch v)];
-in (wrapCCWith {
+in wrapCCWith {
   inherit cc bintools;
   # extraPackages adds packages to depsTargetTargetPropagated
   extraPackages = optional (openmp != null) openmp;
@@ -56,8 +56,7 @@ in (wrapCCWith {
 
     echo "--gcc-toolchain=${gcc}" >> $out/nix-support/cc-cflags
 
-    wrap ${targetConfig}clang++  $wrapper $ccPath/clang++
-    wrap ${targetConfig}clang    $wrapper $ccPath/clang
+    wrap clang++  $wrapper $ccPath/clang++
 
   '' + optionalString (openmp != null) ''
     echo "export OPENMP_RUNTIME=${ompname}" >> $out/nix-support/cc-wrapper-hook
@@ -65,6 +64,7 @@ in (wrapCCWith {
     echo "export OMPSS2_RUNTIME=${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}" >> $out/nix-support/cc-wrapper-hook
+    echo "export NOSV_HOME=${ompss2rt.nosv}" >> $out/nix-support/cc-wrapper-hook
   '';
-}).overrideAttrs (prev: { passthru = (prev.passthru or {}) // { inherit ompss2rt; }; })
+}
+

pkgs/llvm-ompss2/openmp.nix

@@ -39,9 +39,7 @@ stdenv.mkDerivation rec {
     perl
     pkg-config
     python3
-  ];
-
-  buildInputs = lib.optionals enableNosv [
+  ] ++ lib.optionals enableNosv [
     nosv
   ] ++ lib.optionals enableOvni [
     ovni
@@ -56,7 +54,6 @@ stdenv.mkDerivation rec {
   dontStrip = enableDebug;
 
   separateDebugInfo = true;
-  strictDeps = true;
 
   cmakeFlags = [
     "-DLIBOMP_OMPD_SUPPORT=OFF"
@@ -74,28 +71,6 @@ 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

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

pkgs/meteocat-exporter/default.nix

@@ -9,7 +9,6 @@ python3Packages.buildPythonApplication {
   src = ./.;
 
   doCheck = false;
-  strictDeps = true;
 
   build-system = with python3Packages; [
     setuptools

pkgs/mpich/default.nix

@@ -53,7 +53,6 @@ in mpich.overrideAttrs (old: {
   '';
 
   hardeningDisable = [ "all" ];
-  strictDeps = true;
 
   meta = old.meta // {
     maintainers = old.meta.maintainers ++ (with lib.maintainers.bsc; [ rarias ]);

pkgs/nanos6/default.nix

@@ -16,7 +16,7 @@
 , jemallocNanos6 ? null
 , cachelineBytes ? 64
 , enableGlibcxxDebug ? false
-, enablePapi ? true
+, enablePapi ? stdenv.hostPlatform == stdenv.buildPlatform # Disabled when cross-compiling
 , useGit ? false
 , gitUrl ? "ssh://git@bscpm04.bsc.es/nanos6/nanos6"
 , gitBranch ? "master"
@@ -80,8 +80,7 @@ in
       (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") ++
-      (optional enablePapi "--with-papi=${papi}");
+      (optional isCross "--with-symbol-resolution=ifunc");
 
     postConfigure = lib.optionalString (!enableDebug) ''
       # Disable debug
@@ -96,14 +95,16 @@ in
     dontStrip = enableDebug;
     separateDebugInfo = true;
 
-    strictDeps = true;
-
     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

@@ -8,7 +8,6 @@ stdenv.mkDerivation {
   version = "0.0.1";
   src = ./nixgen;
   dontUnpack = true;
-  strictDeps = true;
   phases = [ "installPhase" ];
   installPhase = ''
     mkdir -p $out/bin

pkgs/nixtools/default.nix

@@ -16,7 +16,6 @@ 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

@@ -48,7 +48,6 @@ in
     enableParallelBuilding = true;
     dontStrip = true;
     separateDebugInfo = true;
-    strictDeps = true;
 
     configureFlags = [
       "--with-nosv=${nosv}"

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
@@ -40,17 +40,16 @@ let
 
   source = if (useGit) then git else release;
 in
-  stdenv.mkDerivation {
+  stdenv.mkDerivation rec {
     pname = "nosv";
     inherit (source) src version;
     hardeningDisable = [ "all" ];
     dontStrip = true;
     separateDebugInfo = true;
-    strictDeps = true;
     configureFlags = [
       "--with-ovni=${ovni}"
       "CACHELINE_WIDTH=${toString cacheline}"
-    ] ++ lib.optionals enablePapi [ "--with-papi=${papi}" ];
+    ];
     nativeBuildInputs = [
       autoreconfHook
       pkg-config
@@ -60,7 +59,6 @@ in
       hwloc
       ovni
     ] ++ lib.optionals enablePapi [ papi ];
-    patches = [ ./fix-papi.patch ];
 
     meta = {
       homepage = "https://gitlab.bsc.es/nos-v/nos-v";

pkgs/nosv/fix-papi.patch

@@ -1,136 +0,0 @@
-Commit ID: c09633f172ce4075e0a05a33f6dcbe8e03e1202a
-Change ID: onmwypnnrysktutwsvotqovzponvwrxs
-Bookmarks: fix/papi fix/papi@git fix/papi@origin
-Author   : Aleix Boné <aleix.boneribo@bsc.es> (2025-12-10 11:14:14)
-Committer: Aleix Boné <aleix.boneribo@bsc.es> (2025-12-12 12:56:48)
-
-    Improve PAPI m4 module for cross compilation
-
-diff --git a/m4/papi.m4 b/m4/papi.m4
-index de90584870..8398f856f5 100644
---- a/m4/papi.m4
-+++ b/m4/papi.m4
-@@ -1,6 +1,6 @@
- #	This file is part of Nanos6 and is licensed under the terms contained in the COPYING file.
- #
--#	Copyright (C) 2021-2022 Barcelona Supercomputing Center (BSC)
-+#	Copyright (C) 2021-2025 Barcelona Supercomputing Center (BSC)
- 
- AC_DEFUN([AC_CHECK_PAPI],
- 	[
-@@ -8,34 +8,38 @@
- 			[papi],
- 			[AS_HELP_STRING([--with-papi=prefix], [specify the installation prefix of PAPI])],
- 			[ ac_cv_use_papi_prefix=$withval ],
--			[ ac_cv_use_papi_prefix="" ]
-+			[ ac_cv_use_papi_prefix="check" ]
- 		)
- 
- 		if test x"${ac_cv_use_papi_prefix}" = x"no"; then
- 			AC_MSG_CHECKING([the PAPI installation prefix])
- 			AC_MSG_RESULT([${ac_cv_use_papi_prefix}])
- 			ac_use_papi=no
--		elif test x"${ac_cv_use_papi_prefix}" != x"" ; then
--			AC_MSG_CHECKING([the PAPI installation prefix])
--			AC_MSG_RESULT([${ac_cv_use_papi_prefix}])
--			papi_LIBS="-L${ac_cv_use_papi_prefix}/lib -lpapi -Wl,-rpath,${ac_cv_use_papi_prefix}/lib"
--			papi_CFLAGS="-I$ac_cv_use_papi_prefix/include"
--			ac_use_papi=yes
--		else
-+		elif test x"${ac_cv_use_papi_prefix}" = x""; then
-+			AC_MSG_RESULT([invalid prefix])
-+			AC_MSG_ERROR([papi prefix specified but empty])
-+		elif test x"${ac_cv_use_papi_prefix}" = x"yes" -o x"${ac_cv_use_papi_prefix}" = x"check"; then
- 			PKG_CHECK_MODULES(
- 				[papi],
--				[papi],
-+				[papi >= 5.6.0],
- 				[
- 					AC_MSG_CHECKING([the PAPI installation prefix])
- 					AC_MSG_RESULT([retrieved from pkg-config])
- 					papi_CFLAGS="${papi_CFLAGS}"
- 					ac_use_papi=yes
-+					ac_papi_version_correct=yes
- 				], [
- 					AC_MSG_CHECKING([the PAPI installation prefix])
- 					AC_MSG_RESULT([not available])
- 					ac_use_papi=no
- 				]
- 			)
-+		else
-+			AC_MSG_CHECKING([the PAPI installation prefix])
-+			AC_MSG_RESULT([${ac_cv_use_papi_prefix}])
-+			papi_LIBS="-L${ac_cv_use_papi_prefix}/lib -lpapi -Wl,-rpath,${ac_cv_use_papi_prefix}/lib"
-+			papi_CFLAGS="-I$ac_cv_use_papi_prefix/include"
-+			ac_use_papi=yes
- 		fi
- 
- 		if test x"${ac_use_papi}" = x"yes" ; then
-@@ -53,10 +57,10 @@
- 					ac_use_papi=yes
- 				],
- 				[
--					if test x"${ac_cv_use_papi_prefix}" != x"" ; then
--						AC_MSG_ERROR([PAPI cannot be found.])
-+					if test x"${ac_cv_use_papi_prefix}" = x"yes" ; then
-+						AC_MSG_ERROR([PAPI >= 5.6.0 cannot be found.])
- 					else
--						AC_MSG_WARN([PAPI cannot be found.])
-+						AC_MSG_WARN([PAPI >= 5.6.0 not available.])
- 					fi
- 					ac_use_papi=no
- 				]
-@@ -64,30 +68,38 @@
- 
- 			CFLAGS="${ac_save_CFLAGS}"
- 			LIBS="${ac_save_LIBS}"
-+		elif test x"${ac_cv_use_papi_prefix}" = x"yes" ; then
-+			AC_MSG_ERROR([PAPI >= 5.6.0 cannot be found.])
- 		fi
- 
--		if test x"${ac_use_papi}" = x"yes" ; then
--			if test x"${ac_cv_use_papi_prefix}" != x"" ; then
-+		if test x"${ac_use_papi}" = x"yes" -a x"${ac_papi_version_correct}" != x"yes" ; then
-+			if test x"${ac_cv_use_papi_prefix}" != x"yes" -a x"${ac_cv_use_papi_prefix}" != x"check" ; 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(
--				[[${papiVersion}]],
--				[[ge]],
--				[[5.6.0]],
--				[[ac_papi_version_correct=yes]],
--				[[ac_papi_version_correct=no]]
--			)
- 
--			if test x"${ac_papi_version_correct}" != x"yes" ; then
--				AC_MSG_ERROR([PAPI version must be >= 5.6.0.])
--				ac_use_papi=no
-+			if test x"$cross_compiling" = x"yes" ; then
-+				AC_MSG_WARN([Cross-compiling detected, skipping PAPI version check])
- 			else
--				AC_MSG_CHECKING([if the PAPI version >= 5.6.0.])
--				AC_MSG_RESULT([${ac_papi_version_correct}])
-+				papiVersion=`$papiBinary | sed 's/[[^0-9.]]*\([[0-9.]]*\).*/\1/'`
-+
-+				AX_COMPARE_VERSION(
-+					[[${papiVersion}]],
-+					[[ge]],
-+					[[5.6.0]],
-+					[[ac_papi_version_correct=yes]],
-+					[[ac_papi_version_correct=no]]
-+				)
-+
-+				if test x"${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/osu/default.nix

@@ -24,7 +24,6 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
   enableParallelBuilding = true;
-  strictDeps = true;
   nativeBuildInputs = [ mpiAll ];
   buildInputs = [ mpiAll ];
   hardeningDisable = [ "all" ];

pkgs/ovni/default.nix

@@ -40,7 +40,6 @@ in
     inherit (source) src version;
     dontStrip = true;
     separateDebugInfo = true;
-    strictDeps = true;
     postPatch = ''
       patchShebangs --build test/
     '';

pkgs/papi/default.nix

@@ -1,22 +0,0 @@
-{
-  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

@@ -1,19 +0,0 @@
-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

@@ -47,7 +47,6 @@ stdenv.mkDerivation rec {
 
   dontStrip = true;
   enableParallelBuilding = true;
-  strictDeps = true;
 
   preConfigure = ''
     export CFLAGS="-O3"

pkgs/paraver/kernel.nix

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

pkgs/slurm-exporter/default.nix

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

pkgs/sonar/default.nix

@@ -18,7 +18,6 @@ stdenv.mkDerivation rec {
   };
   hardeningDisable = [ "all" ];
   dontStrip = true;
-  strictDeps = true;
   configureFlags = [ "--with-ovni=${ovni}" ];
 
   nativeBuildInputs = [

pkgs/tagaspi/default.nix

@@ -17,7 +17,6 @@ stdenv.mkDerivation rec {
   pname = "tagaspi";
   enableParallelBuilding = true;
   separateDebugInfo = true;
-  strictDeps = true;
 
   version = "2.0";
   src = fetchFromGitHub {

pkgs/tampi/default.nix

@@ -45,7 +45,6 @@ in stdenv.mkDerivation {
   inherit (source) src version;
   enableParallelBuilding = true;
   separateDebugInfo = true;
-  strictDeps = true;
 
   nativeBuildInputs = [
     autoconf

pkgs/upc-qaire-exporter/default.nix

@@ -9,7 +9,6 @@ python3Packages.buildPythonApplication {
   src = ./.;
 
   doCheck = false;
-  strictDeps = true;
 
   build-system = with python3Packages; [
     setuptools

test/compilers/clang-openmp-ld.nix

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