Add TACUDA through cudaPackages extensions

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

flake.lock

@@ -2,11 +2,11 @@
   "nodes": {
     "nixpkgs": {
       "locked": {
-        "lastModified": 1767634882,
+        "lastModified": 1764522689,
-        "narHash": "sha256-2GffSfQxe3sedHzK+sTKlYo/NTIAGzbFCIsNMUPAAnk=",
+        "narHash": "sha256-SqUuBFjhl/kpDiVaKLQBoD8TLD+/cTUzzgVFoaHrkqY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "3c9db02515ef1d9b6b709fc60ba9a540957f661c",
+        "rev": "8bb5646e0bed5dbd3ab08c7a7cc15b75ab4e1d0f",
         "type": "github"
       },
       "original": {

keys.nix

@@ -22,9 +22,8 @@ rec {
     storage    = [ bay lake2 ];
     monitor    = [ hut ];
     login      = [ apex ];
-    services   = [ tent ];
 
-    system     = storage ++ monitor ++ login ++ services;
+    system     = storage ++ monitor ++ login;
     safe       = system ++ compute;
     all        = safe ++ playground;
   };

m/apex/configuration.nix

@@ -57,18 +57,6 @@
     };
   };
 
-  services.fail2ban = {
-    enable = true;
-    maxretry = 5;
-    bantime-increment = {
-      enable = true; # Double ban time on each attack
-      maxtime = "7d"; # Ban up to a week
-    };
-  };
-
-  # Disable SSH login with password, allow only keypair
-  services.openssh.settings.PasswordAuthentication = false;
-
   networking.firewall = {
     extraCommands = ''
       # Blackhole BSC vulnerability scanner (OpenVAS) as it is spamming our

m/apex/nfs.nix

@@ -7,7 +7,7 @@
     mountdPort = 4002;
     statdPort = 4000;
     exports = ''
-      /home 10.0.40.0/21(rw,async,no_subtree_check,no_root_squash)
+      /home 10.0.40.0/24(rw,async,no_subtree_check,no_root_squash)
       /home 10.106.0.0/24(rw,async,no_subtree_check,no_root_squash)
     '';
   };
@@ -15,19 +15,19 @@
     # Check with `rpcinfo -p`
     extraCommands = ''
       # Accept NFS traffic from compute nodes but not from the outside
-      iptables -A nixos-fw -p tcp -s 10.0.40.0/21 --dport 111   -j nixos-fw-accept
+      iptables -A nixos-fw -p tcp -s 10.0.40.0/24 --dport 111   -j nixos-fw-accept
-      iptables -A nixos-fw -p tcp -s 10.0.40.0/21 --dport 2049  -j nixos-fw-accept
+      iptables -A nixos-fw -p tcp -s 10.0.40.0/24 --dport 2049  -j nixos-fw-accept
-      iptables -A nixos-fw -p tcp -s 10.0.40.0/21 --dport 4000  -j nixos-fw-accept
+      iptables -A nixos-fw -p tcp -s 10.0.40.0/24 --dport 4000  -j nixos-fw-accept
-      iptables -A nixos-fw -p tcp -s 10.0.40.0/21 --dport 4001  -j nixos-fw-accept
+      iptables -A nixos-fw -p tcp -s 10.0.40.0/24 --dport 4001  -j nixos-fw-accept
-      iptables -A nixos-fw -p tcp -s 10.0.40.0/21 --dport 4002  -j nixos-fw-accept
+      iptables -A nixos-fw -p tcp -s 10.0.40.0/24 --dport 4002  -j nixos-fw-accept
-      iptables -A nixos-fw -p tcp -s 10.0.40.0/21 --dport 20048 -j nixos-fw-accept
+      iptables -A nixos-fw -p tcp -s 10.0.40.0/24 --dport 20048 -j nixos-fw-accept
       # Same but UDP
-      iptables -A nixos-fw -p udp -s 10.0.40.0/21 --dport 111   -j nixos-fw-accept
+      iptables -A nixos-fw -p udp -s 10.0.40.0/24 --dport 111   -j nixos-fw-accept
-      iptables -A nixos-fw -p udp -s 10.0.40.0/21 --dport 2049  -j nixos-fw-accept
+      iptables -A nixos-fw -p udp -s 10.0.40.0/24 --dport 2049  -j nixos-fw-accept
-      iptables -A nixos-fw -p udp -s 10.0.40.0/21 --dport 4000  -j nixos-fw-accept
+      iptables -A nixos-fw -p udp -s 10.0.40.0/24 --dport 4000  -j nixos-fw-accept
-      iptables -A nixos-fw -p udp -s 10.0.40.0/21 --dport 4001  -j nixos-fw-accept
+      iptables -A nixos-fw -p udp -s 10.0.40.0/24 --dport 4001  -j nixos-fw-accept
-      iptables -A nixos-fw -p udp -s 10.0.40.0/21 --dport 4002  -j nixos-fw-accept
+      iptables -A nixos-fw -p udp -s 10.0.40.0/24 --dport 4002  -j nixos-fw-accept
-      iptables -A nixos-fw -p udp -s 10.0.40.0/21 --dport 20048 -j nixos-fw-accept
+      iptables -A nixos-fw -p udp -s 10.0.40.0/24 --dport 20048 -j nixos-fw-accept
 
       # Accept NFS traffic from wg0
       iptables -A nixos-fw -p tcp -i wg0 -s 10.106.0.0/24 --dport 111   -j nixos-fw-accept

m/bay/configuration.nix

@@ -24,7 +24,7 @@
       address = "10.0.40.40";
       prefixLength = 24;
     } ];
-    interfaces.ibs785.ipv4.addresses = [ {
+    interfaces.ibp5s0.ipv4.addresses = [ {
       address = "10.0.42.40";
       prefixLength = 24;
     } ];
@@ -35,7 +35,7 @@
         # Accept monitoring requests from hut
         iptables -A nixos-fw -p tcp -s hut -m multiport --dport 9283,9002 -j nixos-fw-accept
         # Accept all Ceph traffic from the local network
-        iptables -A nixos-fw -p tcp -s 10.0.40.0/21 -m multiport --dport 3300,6789,6800:7568 -j nixos-fw-accept
+        iptables -A nixos-fw -p tcp -s 10.0.40.0/24 -m multiport --dport 3300,6789,6800:7568 -j nixos-fw-accept
       '';
     };
   };

m/common/base/env.nix

@@ -2,36 +2,11 @@
 
 {
   environment.systemPackages = with pkgs; [
-    cmake
+    vim wget git htop tmux pciutils tcpdump ripgrep nix-index nixos-option
-    ethtool
+    nix-diff ipmitool freeipmi ethtool lm_sensors cmake gnumake file tree
-    file
+    ncdu perf ldns pv
-    freeipmi
-    git
-    gnumake
-    home-manager
-    htop
-    ipmitool
-    ldns
-    lm_sensors
-    ncdu
-    nix-diff
-    nix-index
-    nix-output-monitor
-    nixfmt-tree
-    nixos-option
-    pciutils
-    perf
-    pv
-    ripgrep
-    tcpdump
-    tmux
-    tree
-    vim
-    wget
-
     # From jungle overlay
-    nixgen
+    osumb nixgen
-    osumb
   ];
 
   programs.direnv.enable = true;

m/common/base/users.nix

@@ -139,7 +139,6 @@
         openssh.authorizedKeys.keys = [
           "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKGt0ESYxekBiHJQowmKpfdouw0hVm3N7tUMtAaeLejK vincent@varch"
         ];
-        shell = pkgs.zsh;
       };
 
       pmartin1 = {
@@ -194,32 +193,6 @@
           "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOlRX7ZCnqtUJYCxKgWmgSrFCYuA2LHY96rVwqxXPl86 aaguirre@BSC-8488184117"
         ];
       };
-
-      emonteir = {
-        uid = 9656;
-        isNormalUser = true;
-        home = "/home/Computational/emonteir";
-        description = "Erwin Royson Monteiro";
-        group = "Computational";
-        hosts = [ "apex" "fox" ];
-        hashedPassword = "$6$0mU88zd3ZuK5NiJQ$DFWL5RMLH6esQM5UyhBCiiNryw4lDDmvJp7Usz3tmevnsiSJr6u0RsUKAnR/K8GRBFrV1.GocrgNjKjik5GY//";
-        openssh.authorizedKeys.keys = [
-          "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOKZKot/Y3F5Wq9pQIXlCbyvQuVVeWMCsAC96Nd+LTcG erwin@Oreo"
-        ];
-      };
-
-      ssanzmar = {
-        uid = 9657;
-        isNormalUser = true;
-        home = "/home/Computational/ssanzmar";
-        description = "Sergio Sanz Martínez";
-        group = "Computational";
-        hosts = [ "apex" "fox" ];
-        hashedPassword = "$6$HUjNDJeJMmNQ6M64$laXSOZcXg6o4v2r8Jm8Xj9kmqw7veCY32po3TVDPRR4WlyxvOeqwoKr4NjlUlPPpKN55Oot3ZYHi.9iNXsH5E1";
-        openssh.authorizedKeys.keys = [
-          "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIELrsRRHXryrdA2ZBx5XmdGxL4DC5bmJydhBeTWQ0SQ sergio.sanz.martinez@estudiantat.upc.edu"
-        ];
-      };
     };
 
     groups = {

m/eudy/kernel/perf.nix

@@ -1,6 +1,11 @@
-{ pkgs, lib, ... }:
+{ config, pkgs, lib, ... }:
 
 {
+  # add the perf tool
+  environment.systemPackages = with pkgs; [
+    config.boot.kernelPackages.perf
+  ];
+
   # allow non-root users to read tracing data from the kernel
   boot.kernel.sysctl."kernel.perf_event_paranoid" = -2;
   boot.kernel.sysctl."kernel.kptr_restrict" = 0;

m/hut/configuration.nix

@@ -45,7 +45,7 @@
       address = "10.0.40.7";
       prefixLength = 24;
     } ];
-    interfaces.ibs785.ipv4.addresses = [ {
+    interfaces.ibp5s0.ipv4.addresses = [ {
       address = "10.0.42.7";
       prefixLength = 24;
     } ];

m/hut/gitlab-runner.nix

@@ -51,7 +51,6 @@
           "/nix/store:/nix/store:ro"
           "/nix/var/nix/db:/nix/var/nix/db:ro"
           "/nix/var/nix/daemon-socket:/nix/var/nix/daemon-socket:ro"
-          "/var/run/postgresql/:/var/run/postgresql/"
         ];
         dockerExtraHosts = [
           # Required to pass the proxy via hut

m/hut/nginx.nix

@@ -4,8 +4,8 @@ let
     name = "jungle-web";
     src = pkgs.fetchgit {
       url = "https://jungle.bsc.es/git/rarias/jungle-website.git";
-      rev = "5f18335d14126d2fef134c0cd441771436f7dfa1";
+      rev = "52abaf4d71652a9ef77a0b098db14ca33bffff4c";
-      hash = "sha256-s9VBF91sQ7hg9+lrwNFPYgoXTTyXaQcAulCiGJgWERo=";
+      hash = "sha256-/ul9GazbOrOkmlvSgDz/+2W+V+ir5725Y7mVLc3rb0M=";
     };
     buildInputs = [ pkgs.hugo ];
     buildPhase = ''

m/hut/postgresql.nix

@@ -8,14 +8,12 @@
       { name = "anavarro"; ensureClauses.superuser = true; }
       { name = "rarias";   ensureClauses.superuser = true; }
       { name = "grafana"; }
-      { name = "gitlab-runner"; }
     ];
     authentication = ''
-      #type  database     DBuser         auth-method
+      #type  database     DBuser    auth-method
-      local  perftestsdb  rarias         trust
+      local  perftestsdb  rarias    trust
-      local  perftestsdb  anavarro       trust
+      local  perftestsdb  anavarro  trust
-      local  perftestsdb  grafana        trust
+      local  perftestsdb  grafana   trust
-      local  perftestsdb  gitlab-runner  trust
     '';
   };
 }

m/lake2/configuration.nix

@@ -46,7 +46,7 @@
       address = "10.0.40.42";
       prefixLength = 24;
     } ];
-    interfaces.ibs785.ipv4.addresses = [ {
+    interfaces.ibp5s0.ipv4.addresses = [ {
       address = "10.0.42.42";
       prefixLength = 24;
     } ];
@@ -57,7 +57,7 @@
         # Accept monitoring requests from hut
         iptables -A nixos-fw -p tcp -s hut --dport 9002 -j nixos-fw-accept
         # Accept all Ceph traffic from the local network
-        iptables -A nixos-fw -p tcp -s 10.0.40.0/21 -m multiport --dport 3300,6789,6800:7568 -j nixos-fw-accept
+        iptables -A nixos-fw -p tcp -s 10.0.40.0/24 -m multiport --dport 3300,6789,6800:7568 -j nixos-fw-accept
       '';
     };
   };

m/module/tc1-board.nix

@@ -1,27 +0,0 @@
-{ lib, pkgs, ... }:
-
-{
-  # Allow user access to FTDI USB device
-  services.udev.packages = lib.singleton (pkgs.writeTextFile {
-    # Needs to be < 73
-    name = "60-ftdi-tc1.rules";
-    text = ''
-      # Bus 003 Device 003: ID 0403:6011 Future Technology Devices International, Ltd FT4232H Quad HS USB-UART/FIFO IC
-      # Use := to make sure it doesn't get changed later
-      SUBSYSTEMS=="usb", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6011", MODE:="0666"
-    '';
-    destination = "/etc/udev/rules.d/60-ftdi-tc1.rules";
-  });
-
-  # Allow access to USB for docker in GitLab runner
-  services.gitlab-runner = {
-    services.gitlab-bsc-docker = {
-      registrationFlags = [
-        # We need raw access to the USB port to reboot the board
-        "--docker-devices /dev/bus/usb/003/003"
-        # And TTY access for the serial port
-        "--docker-devices /dev/ttyUSB2"
-      ];
-    };
-  };
-}

m/owl1/configuration.nix

@@ -20,7 +20,7 @@
       address = "10.0.40.1";
       prefixLength = 24;
     } ];
-    interfaces.ibs785.ipv4.addresses = [ {
+    interfaces.ibp5s0.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.ibs801.ipv4.addresses = [ {
+    interfaces.ibp129s0.ipv4.addresses = [ {
       address = "10.0.42.2";
       prefixLength = 24;
     } ];

m/tent/configuration.nix

@@ -11,14 +11,11 @@
     ./nix-serve.nix
     ./gitlab-runner.nix
     ./gitea.nix
-    ./nextcloud.nix
     ../hut/public-inbox.nix
     ../hut/msmtp.nix
     ../module/p.nix
     ../module/vpn-dac.nix
     ../module/hut-substituter.nix
-    ../module/tc1-board.nix
-    ../module/ceph.nix
   ];
 
   # Select the this using the ID to avoid mismatches
@@ -66,13 +63,6 @@
     fsType = "ext4";
   };
 
-  # Mount the NFS home
-  fileSystems."/nfs/home" = {
-    device = "10.106.0.30:/home";
-    fsType = "nfs";
-    options = [ "nfsvers=3" "rsize=1024" "wsize=1024" "cto" "nofail" ];
-  };
-
   # Make a /vault/$USER directory for each user.
   systemd.services.create-vault-dirs = let
     # Take only normal users in tent

m/tent/gitea.nix

@@ -1,7 +1,4 @@
 { config, lib, ... }:
-let
-  cfg = config.services.gitea;
-in
 {
   services.gitea = {
     enable = true;
@@ -29,54 +26,5 @@ in
         SENDMAIL_ARGS = "--";
       };
     };
-
-    dump = {
-      enable = false; # Do not enable NixOS module, use our custom systemd script below
-      backupDir = "/vault/backup/gitea";
-    };
   };
-
-  systemd.services.gitea-backup = let
-    exe = lib.getExe cfg.package;
-  in {
-    description = "Gitea daily backup";
-    after = [ "gitea.service" ];
-    path = [ cfg.package ];
-
-    environment = {
-      USER = cfg.user;
-      HOME = cfg.stateDir;
-      GITEA_WORK_DIR = cfg.stateDir;
-      GITEA_CUSTOM = cfg.customDir;
-    };
-
-    serviceConfig = {
-      Type = "oneshot";
-      User = cfg.user;
-      WorkingDirectory = cfg.dump.backupDir;
-    };
-
-    script = ''
-      name="gitea-dump-$(date +%a).${cfg.dump.type}"
-      ${exe} dump --type ${cfg.dump.type} --file - >"$name.tmp"
-      mv "$name.tmp" "$name"
-      cp "$name" "/ceph/backup/gitea/$name"
-    '';
-  };
-
-  # Create also the /ceph directories if needed
-  systemd.tmpfiles.rules = [
-    "d /ceph/backup/gitea/ 0750 ${cfg.user} ${cfg.group} - -"
-    "z /ceph/backup/gitea/ 0750 ${cfg.user} ${cfg.group} - -"
-  ];
-
-  systemd.timers.gitea-backup = {
-    description = "Update timer for gitea-backup";
-    partOf = [ "gitea-backup.service" ];
-    wantedBy = [ "timers.target" ];
-    timerConfig.OnCalendar = cfg.dump.interval;
-  };
-
-  # Allow gitea user to send mail
-  users.users.gitea.extraGroups = [ "mail-robot" ];
 }

m/tent/gitlab-runner.nix

@@ -43,7 +43,6 @@
         registrationFlags = [
           # Increase build log length to 64 MiB
           "--output-limit 65536"
-          "--docker-network-mode host"
         ];
         preBuildScript = pkgs.writeScript "setup-container" ''
           mkdir -p -m 0755 /nix/var/log/nix/drvs

m/tent/nextcloud.nix

@@ -1,71 +0,0 @@
-{ pkgs, config, ... }:
-{
-  age.secrets.tent-nextcloud-admin-pass.file = ../../secrets/tent-nextcloud-admin-pass.age;
-
-  services.nextcloud = {
-    package = pkgs.nextcloud32;
-    enable = true;
-    hostName = "localhost";
-    config.adminpassFile = config.age.secrets.tent-nextcloud-admin-pass.path;
-    config.dbtype = "sqlite";
-    extraApps = {
-      inherit (config.services.nextcloud.package.packages.apps)
-        news
-        contacts
-        calendar
-        tasks;
-        # The app richdocuments (i.e. office) is not enabled yet as there are
-        # problems with the WOPI protocol in a subdir.
-    };
-    extraAppsEnable = true;
-    settings = let
-      prot = "https";
-      host = "jungle.bsc.es";
-      dir = "/nextcloud";
-    in {
-      overwriteprotocol = prot;
-      overwritehost = host;
-      overwritewebroot = dir;
-      overwrite.cli.url = "${prot}://${host}${dir}/";
-      htaccess.RewriteBase = dir;
-    };
-  };
-
-  services.nginx.virtualHosts."${config.services.nextcloud.hostName}".listen = [ {
-    addr = "127.0.0.1";
-    port = 8066; # NOT an exposed port
-  } ];
-
-  services.nginx.virtualHosts."jungle.bsc.es".locations = {
-    "^~ /.well-known" = {
-      priority = 9000;
-      extraConfig = ''
-              absolute_redirect off;
-              location ~ ^/\\.well-known/(?:carddav|caldav)$ {
-                return 301 /nextcloud/remote.php/dav;
-              }
-              location ~ ^/\\.well-known/host-meta(?:\\.json)?$ {
-                return 301 /nextcloud/public.php?service=host-meta-json;
-              }
-              location ~ ^/\\.well-known/(?!acme-challenge|pki-validation) {
-                return 301 /nextcloud/index.php$request_uri;
-              }
-              try_files $uri $uri/ =404;
-      '';
-    };
-
-    "/nextcloud/" = {
-      priority = 9999;
-      extraConfig = ''
-          proxy_set_header X-Real-IP $remote_addr;
-          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-          proxy_set_header X-NginX-Proxy true;
-          proxy_set_header X-Forwarded-Proto http;
-          proxy_pass http://127.0.0.1:8066/; # tailing / is important!
-          proxy_set_header Host $host;
-          proxy_cache_bypass $http_upgrade;
-          proxy_redirect off;
-      '';
-    };
-  };
-}

m/tent/nginx.nix

@@ -4,8 +4,8 @@ let
     name = "jungle-web";
     src = pkgs.fetchgit {
       url = "https://jungle.bsc.es/git/rarias/jungle-website.git";
-      rev = "5f18335d14126d2fef134c0cd441771436f7dfa1";
+      rev = "52abaf4d71652a9ef77a0b098db14ca33bffff4c";
-      hash = "sha256-s9VBF91sQ7hg9+lrwNFPYgoXTTyXaQcAulCiGJgWERo=";
+      hash = "sha256-/ul9GazbOrOkmlvSgDz/+2W+V+ir5725Y7mVLc3rb0M=";
     };
     buildInputs = [ pkgs.hugo ];
     buildPhase = ''

m/weasel/configuration.nix

@@ -25,7 +25,7 @@
       address = "10.0.40.6";
       prefixLength = 24;
     } ];
-    interfaces.ibs785.ipv4.addresses = [ {
+    interfaces.ibp5s0.ipv4.addresses = [ {
       address = "10.0.42.6";
       prefixLength = 24;
     } ];

overlay.nix

@@ -50,6 +50,8 @@ let
     ovni = callPackage ./pkgs/ovni/default.nix { };
     ovniGit = final.ovni.override { useGit = true; };
     paraverKernel = callPackage ./pkgs/paraver/kernel.nix { };
+    pocl = callPackage ./pkgs/pocl/default.nix { };
+    pocl-noicd = callPackage ./pkgs/pocl/default.nix { enableICD = false; };
     prometheus-slurm-exporter = prev.callPackage ./pkgs/slurm-exporter/default.nix { };
     #pscom = callPackage ./pkgs/parastation/pscom.nix { }; # Unmaintaned
     #psmpi = callPackage ./pkgs/parastation/psmpi.nix { }; # Unmaintaned
@@ -62,7 +64,16 @@ let
     tagaspi = callPackage ./pkgs/tagaspi/default.nix { };
     tampi = callPackage ./pkgs/tampi/default.nix { };
     upc-qaire-exporter = prev.callPackage ./pkgs/upc-qaire-exporter/default.nix { };
+    taopencl = callPackage ./pkgs/taopencl/default.nix { };
     wxparaver = callPackage ./pkgs/paraver/default.nix { };
+
+    gromacs = callPackage ./pkgs/gromacs/default.nix { enableSYCL = true; };
+
+    _cuda = prev._cuda.extend (_: _prev: final.lib.recursiveUpdate _prev {
+      extensions = _prev.extensions ++ [(finalAttrs: _: {
+        tacuda = finalAttrs.callPackage ./pkgs/tacuda/default.nix { };
+      })];
+    });
   };
 
   tests = rec {
@@ -96,6 +107,13 @@ let
     clangNosvOmpv-ld = callPackage ./test/compilers/clang-openmp-ld.nix {
       stdenv = final.stdenvClangOmpss2NodesOmpv;
     };
+
+    ocl-build = callPackage ./test/compilers/opencl.nix { };
+    ocl-build-noicd = callPackage ./test/compilers/opencl.nix { ocl-icd = final.pocl-noicd; };
+
+    pocl = callPackage ./test/compilers/pocl.nix { };
+    ocl-run-pocl = ocl-build.test-icd;
+    ocl-run-pocl-noicd = ocl-build-noicd.test-noicd;
   };
 
   # For now, only build toplevel packages in CI/Hydra

pkgs/gromacs/default.nix

@@ -0,0 +1,190 @@
+{
+  lib,
+  stdenv,
+  fetchurl,
+  cmake,
+  hwloc,
+  fftw,
+  perl,
+  blas,
+  lapack,
+  llvmPackages,
+  intelPackages ? null,
+  mpi,
+  cudaPackages,
+  plumed,
+  singlePrec ? true,
+  config,
+  enableSYCL ? false,
+  enableCuda ? config.cudaSupport,
+  enableMpi ? false,
+  enablePlumed ? false,
+  cpuAcceleration ? null,
+}:
+
+# CUDA is only implemented for single precission
+assert enableCuda -> singlePrec;
+
+assert !(enableSYCL && enableCuda);
+
+assert enableSYCL -> intelPackages != null;
+
+let
+  inherit (cudaPackages.flags) cmakeCudaArchitecturesString;
+
+  # Select reasonable defaults for all major platforms
+  # The possible values are defined in CMakeLists.txt:
+  # AUTO None SSE2 SSE4.1 AVX_128_FMA AVX_256 AVX2_256
+  # AVX2_128 AVX_512 AVX_512_KNL MIC ARM_NEON ARM_NEON_ASIMD
+  SIMD =
+    x:
+    if (cpuAcceleration != null) then
+      x
+    else if stdenv.hostPlatform.system == "i686-linux" then
+      "SSE2"
+    else if stdenv.hostPlatform.system == "x86_64-linux" then
+      "SSE4.1"
+    else if stdenv.hostPlatform.system == "x86_64-darwin" then
+      "SSE4.1"
+    else if stdenv.hostPlatform.system == "aarch64-linux" then
+      "ARM_NEON_ASIMD"
+    else
+      "None";
+
+  source =
+    if enablePlumed then
+      {
+        version = "2024.2";
+        hash = "sha256-gCp+M18uiVdw9XsVnk7DaOuw/yzm2sz3BsboAlw2hSs=";
+      }
+    else
+      {
+        version = "2025.3";
+        hash = "sha256-i9/KAmjz8Qp8o8BuWbYvc+oCQgxnIRwP85EvMteDPGU=";
+      };
+
+  stdenv' = if enableSYCL then intelPackages.stdenv else stdenv;
+
+in
+stdenv'.mkDerivation rec {
+  pname = "gromacs";
+  version = source.version;
+
+  src = fetchurl {
+    url = "ftp://ftp.gromacs.org/pub/gromacs/gromacs-${version}.tar.gz";
+    inherit (source) hash;
+  };
+
+  patches = [ (if enablePlumed then ./pkgconfig-2024.patch else ./pkgconfig-2025.patch) ];
+
+  postPatch = lib.optionalString enablePlumed ''
+    plumed patch -p -e gromacs-${source.version}
+  '';
+
+  outputs = [
+    "out"
+    "dev"
+    "man"
+  ];
+
+  nativeBuildInputs = [
+    cmake
+  ]
+  ++ lib.optional enablePlumed plumed
+  ++ lib.optionals enableCuda [ cudaPackages.cuda_nvcc ];
+
+  env.MKLROOT = intelPackages.mkl;
+
+  buildInputs = [
+    fftw
+    perl
+    hwloc
+    blas
+    lapack
+  ]
+  ++ lib.optional enableMpi mpi
+  ++ lib.optionals enableCuda [
+    cudaPackages.cuda_cccl
+    cudaPackages.cuda_cudart
+    cudaPackages.libcufft
+    cudaPackages.cuda_profiler_api
+  ]
+  ++ lib.optional stdenv.hostPlatform.isDarwin llvmPackages.openmp;
+
+  propagatedBuildInputs = lib.optional enableMpi mpi;
+  propagatedUserEnvPkgs = lib.optional enableMpi mpi;
+
+  cmakeFlags = [
+    (lib.cmakeBool "GMX_HWLOC" true)
+    "-DGMX_SIMD:STRING=${SIMD cpuAcceleration}"
+    "-DGMX_OPENMP:BOOL=TRUE"
+    "-DBUILD_SHARED_LIBS=ON"
+  ]
+  ++ (
+    if singlePrec then
+      [
+        "-DGMX_DOUBLE=OFF"
+      ]
+    else
+      [
+        "-DGMX_DOUBLE=ON"
+        "-DGMX_DEFAULT_SUFFIX=OFF"
+      ]
+  )
+  ++ (
+    if enableMpi then
+      [
+        "-DGMX_MPI:BOOL=TRUE"
+        "-DGMX_THREAD_MPI:BOOL=FALSE"
+      ]
+    else
+      [
+        "-DGMX_MPI:BOOL=FALSE"
+      ]
+  )
+  ++ (lib.optionals enableSYCL [
+    "-DGMX_GPU=SYCL"
+    "-DGMX_OPENMP=OFF" # TODO: enable OpenMP with SYCL?
+  ])
+  ++ lib.optionals enableCuda [
+    "-DGMX_GPU=CUDA"
+    (lib.cmakeFeature "CMAKE_CUDA_ARCHITECTURES" cmakeCudaArchitecturesString)
+
+    # Gromacs seems to ignore and override the normal variables, so we add this ad hoc:
+    (lib.cmakeFeature "GMX_CUDA_TARGET_COMPUTE" cmakeCudaArchitecturesString)
+  ];
+
+  postInstall = ''
+    moveToOutput share/cmake $dev
+  '';
+
+  meta = with lib; {
+    homepage = "https://www.gromacs.org";
+    license = licenses.lgpl21Plus;
+    description = "Molecular dynamics software package";
+    longDescription = ''
+      GROMACS is a versatile package to perform molecular dynamics,
+      i.e. simulate the Newtonian equations of motion for systems
+      with hundreds to millions of particles.
+
+      It is primarily designed for biochemical molecules like
+      proteins, lipids and nucleic acids that have a lot of
+      complicated bonded interactions, but since GROMACS is
+      extremely fast at calculating the nonbonded interactions (that
+      usually dominate simulations) many groups are also using it
+      for research on non-biological systems, e.g. polymers.
+
+      GROMACS supports all the usual algorithms you expect from a
+      modern molecular dynamics implementation, (check the online
+      reference or manual for details), but there are also quite a
+      few features that make it stand out from the competition.
+
+      See: https://www.gromacs.org/about.html for details.
+    '';
+    platforms = platforms.unix;
+    maintainers = with maintainers; [
+      sheepforce
+      markuskowa
+    ];
+  };
+}

pkgs/gromacs/pkgconfig-2024.patch

@@ -0,0 +1,24 @@
+diff --git a/src/external/muparser/muparser.pc.in b/src/external/muparser/muparser.pc.in
+index 646787cb53..9b97ad57f7 100644
+--- a/src/external/muparser/muparser.pc.in
++++ b/src/external/muparser/muparser.pc.in
+@@ -1,7 +1,5 @@
+-prefix=@CMAKE_INSTALL_PREFIX@
+-exec_prefix=${prefix}
+-libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
++libdir=@CMAKE_INSTALL_FULL_LIBDIR@
++includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
+ 
+ Name: @PACKAGE_NAME@
+ Description: Mathematical expressions parser library
+diff --git a/src/gromacs/libgromacs.pc.cmakein b/src/gromacs/libgromacs.pc.cmakein
+index ec1ed6684e..ca1105474a 100644
+--- a/src/gromacs/libgromacs.pc.cmakein
++++ b/src/gromacs/libgromacs.pc.cmakein
+@@ -1,4 +1,4 @@
+-libdir=@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_LIBDIR@
++libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+ 
+ Name: libgromacs@GMX_LIBS_SUFFIX@
+ Description: Gromacs library

pkgs/gromacs/pkgconfig-2025.patch

@@ -0,0 +1,36 @@
+diff --git a/src/external/muparser/muparser.pc.in b/src/external/muparser/muparser.pc.in
+index 646787cb53..d26e84de8f 100644
+--- a/src/external/muparser/muparser.pc.in
++++ b/src/external/muparser/muparser.pc.in
+@@ -1,11 +1,9 @@
+-prefix=@CMAKE_INSTALL_PREFIX@
+-exec_prefix=${prefix}
+-libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
+-includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
+-
+-Name: @PACKAGE_NAME@
+-Description: Mathematical expressions parser library
+-Version: @MUPARSER_VERSION@
+-Requires:
+-Libs: -L${libdir} -lmuparser
+-Cflags: -I${includedir} @PKG_CONFIG_FLAGS@
++libdir=@CMAKE_INSTALL_FULL_LIBDIR@
++includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
++
++Name: @PACKAGE_NAME@
++Description: Mathematical expressions parser library
++Version: @MUPARSER_VERSION@
++Requires:
++Libs: -L${libdir} -lmuparser
++Cflags: -I${includedir} @PKG_CONFIG_FLAGS@
+diff --git a/src/gromacs/libgromacs.pc.cmakein b/src/gromacs/libgromacs.pc.cmakein
+index af9b5a6dc0..5f58d549bf 100644
+--- a/src/gromacs/libgromacs.pc.cmakein
++++ b/src/gromacs/libgromacs.pc.cmakein
+@@ -1,5 +1,4 @@
+-prefix=@CMAKE_INSTALL_PREFIX@
+-libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@
++libdir=@CMAKE_INSTALL_FULL_LIBDIR@
+
+ Name: libgromacs@GMX_LIBS_SUFFIX@
+ Description: Gromacs library

pkgs/pocl/0001-cmake-do-not-use-suffix.patch

@@ -0,0 +1,26 @@
+From ccf301659caac9b5e973ba1f2d32352acf617a98 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Aleix=20Bon=C3=A9?= <aleix.boneribo@bsc.es>
+Date: Tue, 2 Jul 2024 16:45:05 +0200
+Subject: [PATCH] cmake: do not use suffix
+
+---
+ cmake/LLVM.cmake                              |  3 ++
+ 1 files changed, 3 insertions(+)
+
+diff --git a/cmake/LLVM.cmake b/cmake/LLVM.cmake
+index f4dbda065..e29144dce 100644
+--- a/cmake/LLVM.cmake
++++ b/cmake/LLVM.cmake
+@@ -65,6 +65,9 @@ else()
+     message(WARNING "Cannot determine llvm binary suffix from ${LLVM_CONFIG}")
+   endif()
+   message(STATUS "LLVM binaries suffix : ${LLVM_BINARY_SUFFIX}")
++
++  # We don't want suffixes in nix
++  set(LLVM_BINARY_SUFFIX "")
+ endif()
+ 
+ get_filename_component(LLVM_CONFIG_LOCATION "${LLVM_CONFIG}" DIRECTORY)
+-- 
+2.45.1
+

pkgs/pocl/0001-cmake-native-build-tools.patch

@@ -0,0 +1,33 @@
+From f24b456c50f587b05cc8f2699c94d8cdefc5b13e Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Aleix=20Bon=C3=A9?= <aleix.boneribo@bsc.es>
+Date: Tue, 2 Jul 2024 17:11:11 +0200
+Subject: [PATCH] cmake: native build tools
+
+---
+ cmake/LLVM.cmake                    |   7 +-
+ 1 files changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/cmake/LLVM.cmake b/cmake/LLVM.cmake
+index e29144dce..b9f14ce6a 100644
+--- a/cmake/LLVM.cmake
++++ b/cmake/LLVM.cmake
+@@ -269,10 +269,15 @@ endforeach()
+ 
+ ####################################################################
+ 
++if(DEFINED LLVM_NATIVE_TOOL_DIR)
++  set(TOOL_DIR "${LLVM_NATIVE_TOOL_DIR}")
++  message(STATUS "TOOL_DIR=${TOOL_DIR}")
++endif()
++
+ macro(find_program_or_die OUTPUT_VAR PROG_NAME DOCSTRING)
+   find_program(${OUTPUT_VAR}
+     NAMES "${PROG_NAME}${LLVM_BINARY_SUFFIX}${CMAKE_EXECUTABLE_SUFFIX}"
+-    HINTS "${LLVM_BINDIR}" "${LLVM_CONFIG_LOCATION}"
++    HINTS "${TOOL_DIR}" "${LLVM_BINDIR}" "${LLVM_CONFIG_LOCATION}"
+     DOC "${DOCSTRING}"
+     NO_CMAKE_PATH
+     NO_CMAKE_ENVIRONMENT_PATH
+-- 
+2.45.1
+

pkgs/pocl/0001-cmake-use-clang-from-cmake-variable.patch

@@ -0,0 +1,48 @@
+From 4688b5ce895761c884ae15fc0234ed8d623b988b Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Aleix=20Bon=C3=A9?= <aleix.boneribo@bsc.es>
+Date: Tue, 2 Jul 2024 15:41:47 +0200
+Subject: [PATCH] cmake: use clang from cmake variable
+
+---
+ cmake/LLVM.cmake | 22 ++++++++++++++++++++--
+ 1 file changed, 20 insertions(+), 2 deletions(-)
+
+diff --git a/cmake/LLVM.cmake b/cmake/LLVM.cmake
+index 71b786dc7..f4dbda065 100644
+--- a/cmake/LLVM.cmake
++++ b/cmake/LLVM.cmake
+@@ -281,11 +281,29 @@ macro(find_program_or_die OUTPUT_VAR PROG_NAME DOCSTRING)
+   endif()
+ endmacro()
+ 
+-find_program_or_die( CLANG "clang" "clang binary")
++# -DCMAKE_C_COMPILER=riscv64-unknown-linux-gnu-clang -DCMAKE_CXX_COMPILER=riscv64-unknown-linux-gnu-clang++
++
++# if(DEFINED CLANG_EXECUTABLE)
++if(DEFINED CMAKE_C_COMPILER)
++  # set(CLANG "${CLANG_EXECUTABLE}")
++  set(CLANG "${CMAKE_C_COMPILER}")
++  message(STATUS "Using CLANG_EXECUTABLE: ${CLANG}")
++else()
++  find_program_or_die( CLANG "clang" "clang binary")
++endif()
+ execute_process(COMMAND "${CLANG}" "--version" OUTPUT_VARIABLE LLVM_CLANG_VERSION RESULT_VARIABLE CLANG_RES)
++
+ # TODO this should be optional
+-find_program_or_die( CLANGXX "clang++" "clang++ binary")
++# if(DEFINED CLANGXX_EXECUTABLE)
++if(DEFINED CMAKE_CXX_COMPILER)
++  # set(CLANGXX "${CLANGXX_EXECUTABLE}")
++  set(CLANGXX "${CMAKE_CXX_COMPILER}")
++  message(STATUS "Using CLANGXX_EXECUTABLE: ${CLANGXX}")
++else()
++  find_program_or_die( CLANGXX "clang++" "clang++ binary")
++endif()
+ execute_process(COMMAND "${CLANGXX}" "--version" OUTPUT_VARIABLE LLVM_CLANGXX_VERSION RESULT_VARIABLE CLANGXX_RES)
++
+ if(CLANGXX_RES OR CLANG_RES)
+   message(FATAL_ERROR "Failed running clang/clang++ --version")
+ endif()
+-- 
+2.45.1
+

pkgs/pocl/default.nix

@@ -0,0 +1,255 @@
+{
+  lib,
+  llvmPackages,
+  ninja,
+  cmake,
+  hwloc,
+  ocl-icd,
+  opencl-headers,
+  getconf,
+  pkg-config,
+  spirv-llvm-translator,
+  spirv-tools,
+  libxml2, # required for statically linked llvm
+  python3,
+  writableTmpDirAsHomeHook,
+  writeText,
+  runCommand,
+  opencl-cts,
+
+  fetchFromGitHub,
+
+  useGit ? false,
+  gitUrl ? "git@gitlab-internal.bsc.es:task-awareness/pocl/pocl.git",
+  gitBranch ? "new-device",
+  gitCommit ? "dd10c2221b31223cbb796182df6a07f11c7541f5",
+
+  staticLLVM ? true,
+  enableICD ? true,
+  enableSPIRV ? true,
+  enableHWLOC ? true,
+  enableRemoteServer ? false,
+  enableRemoteClient ? false,
+  enableDistroVariants ? false,
+
+  lttng-ust,
+  enableLTTNG ? false,
+
+  onetbb,
+  enableTBB ? false,
+
+  nosv ? null,
+  ovni ? null,
+  enableNOSV ? useGit,
+  enableOVNI ? useGit,
+
+  buildPackages,
+  targetPackages,
+  nix-update-script,
+}:
+
+assert (enableNOSV || enableOVNI) -> useGit;
+
+let
+
+  release = rec {
+    version = "7.1";
+    src = fetchFromGitHub {
+      owner = "pocl";
+      repo = "pocl";
+      tag = "v${version}";
+      hash = "sha256-bS6vTIjLO7YLs7qYLKW0cYYbEJ/hRS/+IjjAKbkj8ac=";
+    };
+  };
+
+  git = rec {
+    version = src.shortRev;
+    src = builtins.fetchGit {
+      url = gitUrl;
+      ref = gitBranch;
+      rev = gitCommit;
+    };
+  };
+
+  source = if (useGit) then git else release;
+
+  stdenv = llvmPackages.stdenv;
+
+  buildLlvmPackages = buildPackages.llvmPackages;
+
+  isCross = stdenv.hostPlatform != stdenv.buildPlatform;
+
+  featureList = lib.concatStringsSep "+" (
+    (lib.optionals enableICD [ "icd" ])
+    ++ (lib.optionals enableNOSV [ "nosv" ])
+    ++ (lib.optionals enableOVNI [ "ovni" ])
+    ++ (lib.optionals enableSPIRV [ "spirv" ])
+    ++ (lib.optionals enableTBB [ "tbb" ])
+    ++ (lib.optionals enableRemoteClient [ "server" ])
+    ++ (lib.optionals enableRemoteServer [ "client" ])
+  );
+in
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "pocl";
+  version = featureList + "-" + source.version;
+  inherit (source) src;
+
+  patches = lib.optionals useGit [
+    ./0001-cmake-use-clang-from-cmake-variable.patch
+    ./0001-cmake-do-not-use-suffix.patch
+    ./0001-cmake-native-build-tools.patch
+  ];
+
+  cmakeFlags = [
+    # TODO: all these are broken when cross compiling. Upstream has refactored
+    # all the cmake infra for cross compilation, but it's not in a release yet
+    (lib.cmakeOptionType "filepath" "WITH_LLVM_CONFIG" (
+      lib.getExe' buildLlvmPackages.llvm.dev "llvm-config"
+    ))
+    (lib.cmakeOptionType "filepath" "CLANG" (lib.getExe' buildLlvmPackages.clangUseLLVM "clang"))
+    (lib.cmakeOptionType "filepath" "CLANGXX" (lib.getExe' buildLlvmPackages.clangUseLLVM "clang++"))
+    (lib.cmakeOptionType "path" "CLANG_RESOURCE_DIR" "${llvmPackages.stdenv.cc}/resource-root")
+
+    (lib.cmakeBool "ENABLE_TESTS" finalAttrs.finalPackage.doCheck)
+
+    (lib.cmakeBool "ENABLE_RELOCATION" true)
+    (lib.cmakeBool "ENABLE_POCL_BUILDING" true)
+    (lib.cmakeBool "POCL_ICD_ABSOLUTE_PATH" true)
+
+    (lib.cmakeBool "ENABLE_TBB_DEVICE" enableTBB)
+    (lib.cmakeBool "ENABLE_ICD" enableICD)
+    (lib.cmakeBool "ENABLE_HWLOC" enableHWLOC)
+    (lib.cmakeBool "ENABLE_LTTNG" enableLTTNG)
+
+    (lib.cmakeBool "ENABLE_REMOTE_CLIENT" enableRemoteClient)
+    (lib.cmakeBool "ENABLE_REMOTE_SERVER" enableRemoteServer)
+
+    # avoid the runtime linker pulling in a different llvm e.g. from graphics drivers
+    (lib.cmakeBool "STATIC_LLVM" staticLLVM)
+  ]
+  ++ lib.optionals (enableNOSV || enableOVNI) [
+    (lib.cmakeBool "ENABLE_NOSV" enableNOSV)
+    (lib.cmakeBool "ENABLE_OVNI" enableOVNI)
+  ]
+  ++ lib.optionals (!isCross && enableDistroVariants) [
+    (lib.cmakeFeature "KERNELLIB_HOST_CPU_VARIANTS" "distro") # TODO: check if we can do it when cross compiling
+  ]
+  ++ lib.optionals isCross [
+    (lib.cmakeFeature "CMAKE_SYSTEM_NAME" "Linux")
+    (lib.cmakeFeature "CMAKE_FIND_ROOT_PATH_MODE_PROGRAM" "NEVER")
+    (lib.cmakeFeature "CMAKE_FIND_ROOT_PATH_MODE_LIBRARY" "ONLY")
+    (lib.cmakeFeature "CMAKE_FIND_ROOT_PATH_MODE_INCLUDE" "ONLY")
+    (lib.cmakeFeature "CMAKE_FIND_ROOT_PATH_MODE_PACKAGE" "ONLY")
+  ]
+  ++ lib.optionals stdenv.hostPlatform.isRiscV [
+    (lib.cmakeFeature "LLC_TRIPLE" "riscv64-unknown-linux-gnu")
+    (lib.cmakeFeature "LLC_HOST_CPU" "rv64g")
+    (lib.cmakeFeature "CLANG_MARCH_FLAG" "-march=")
+  ];
+
+  # Fixes error: ld: cannot find -lgcc / -lgcc_s when linking from libpocl on
+  # host
+  preConfigure = ''
+    cmakeFlagsArray+=(
+      -DEXTRA_HOST_LD_FLAGS="${lib.escapeShellArg (builtins.readFile "${targetPackages.stdenv.cc}/nix-support/cc-ldflags")}"
+      -DEXTRA_KERNEL_FLAGS="${lib.escapeShellArg (builtins.readFile "${targetPackages.stdenv.cc}/nix-support/cc-ldflags")}"
+    )
+  '';
+
+  nativeBuildInputs = [
+    cmake
+    getconf
+    ninja
+    pkg-config
+    python3
+  ];
+
+  buildInputs = [
+    opencl-headers
+    llvmPackages.libclang
+    llvmPackages.llvm
+  ]
+  ++ lib.optionals staticLLVM [ libxml2 ]
+  ++ lib.optionals enableNOSV [ nosv ]
+  ++ lib.optionals enableOVNI [ ovni ]
+  ++ lib.optionals enableHWLOC [ hwloc ]
+  ++ lib.optionals enableTBB [ onetbb ]
+  ++ lib.optionals enableICD [ ocl-icd ]
+  ++ lib.optionals enableLTTNG [ lttng-ust ]
+  ++ lib.optionals enableSPIRV [
+    (spirv-llvm-translator.override { inherit (llvmPackages) llvm; })
+    spirv-tools
+  ];
+
+  nativeInstallCheckInputs = [
+    writableTmpDirAsHomeHook # needed for POCL_CACHE_DIR
+  ];
+
+  doInstallCheck = true;
+
+  installCheckPhase = lib.optionalString enableICD ''
+    runHook preInstallCheck
+
+    export OCL_ICD_VENDORS=$out/etc/OpenCL/vendors
+    $out/bin/poclcc -o poclcc.cl.pocl $src/examples/poclcc/poclcc.cl
+
+    runHook postInstallCheck
+  '';
+
+  setupHook = lib.optionalDrvAttr enableICD (
+    writeText "setup-hook" ''
+      addToSearchPath OCL_ICD_VENDORS @out@/etc/OpenCL/vendors
+    ''
+  );
+
+  passthru =
+    let
+      self = finalAttrs.finalPackage;
+    in
+    {
+      updateScript = nix-update-script { };
+      git = self.override { useGit = true; };
+
+      withICD = enableICD;
+
+      test = {
+        # Run builtin tests (causes a rebuild)
+        self = self.overrideAttrs { doCheck = true; };
+
+        # Run basic test from Khronos OpenCL Conformance Test Suite
+        # WARN: despite its name, test_basic is very exhaustive, and can take more
+        # than 1 hour in a marenostrum5 node.
+        cts =
+          assert enableICD;
+          lib.genAttrs [ "api" "basic" "c11_atomics" "printf" "svm" ] (
+            name:
+            runCommand "pocl-cts-test_${name}" {
+              nativeBuildInputs = [ self ];
+              requiredSystemFeatures = [ "sys-devices" ];
+              env = {
+                POCL_DEBUG = "error,warn";
+                POCL_CACHE_DIR = "/build/pocl_cache";
+              };
+            } "${opencl-cts}/bin/Release/test_${name} | tee $out"
+          );
+      };
+    };
+
+  env.HWLOC_SYNTHETIC = lib.optionalDrvAttr enableHWLOC "node:1 core:1 pu:1";
+
+  propagatedBuildInputs = [ stdenv.cc.cc ];
+
+  meta = with lib; {
+    description = "A portable open source (MIT-licensed) implementation of the OpenCL standard";
+    homepage = "http://portablecl.org";
+    license = licenses.mit;
+    maintainers = with maintainers; [
+      leixb
+      jansol
+      xddxdd
+      bsc.maintainers.leixb
+    ];
+    platforms = platforms.linux ++ platforms.darwin;
+  };
+})

pkgs/tacuda/default.nix

@@ -0,0 +1,72 @@
+{
+  backendStdenv,
+  fetchFromGitHub,
+  automake,
+  autoconf,
+  libtool,
+  gnumake,
+  autoreconfHook,
+  boost,
+  cudatoolkit,
+  libcublas,
+  cuda_cudart,
+
+  useGit ? false,
+  gitUrl ? "git@gitlab-internal.bsc.es:task-awareness/tacuda/tacuda.git",
+  gitBranch ? "main",
+  gitCommit ? "35234f9445e6149a2bd38d119841e2485d6ee05e",
+}:
+
+let
+
+  release_ver = "2.1.0";
+  release = {
+    version = release_ver;
+    src = fetchFromGitHub {
+      owner = "bsc-pm";
+      repo = "tacuda";
+      rev = release_ver;
+      hash = "sha256-Cj3EiLVJSLvRv0ydeg7Vp4SpkniEqHkcWF+YOJQ8EcM=";
+    };
+  };
+
+  git = rec {
+    version = src.shortRev;
+    src = builtins.fetchGit {
+      url = gitUrl;
+      ref = gitBranch;
+      rev = gitCommit;
+    };
+  };
+
+  source = if (useGit) then git else release;
+
+in
+
+backendStdenv.mkDerivation {
+  pname = "tacuda";
+  inherit (source) src version;
+
+  enableParallelBuilding = true;
+  separateDebugInfo = true;
+  strictDeps = true;
+
+  nativeBuildInputs = [
+    autoreconfHook
+    automake
+    autoconf
+    libtool
+    gnumake
+  ];
+
+  patches = [ ./fix_config.patch ];
+
+  configureFlags = [ "--with-cuda-include=${cudatoolkit}/include" ];
+
+  buildInputs = [
+    boost
+    libcublas
+    cuda_cudart
+  ];
+
+}

pkgs/tacuda/fix_config.patch

@@ -0,0 +1,13 @@
+diff --git a/m4/cuda.m4 b/m4/cuda.m4
+index 23f5c94..8f9b534 100644
+--- a/m4/cuda.m4
++++ b/m4/cuda.m4
+@@ -40,7 +40,7 @@ search_libs="cuda cublas cudart"
+ required_libs=""
+ 
+ m4_foreach([function],
+-           [cuInit,
++           [
+ 	    cublasSgemm,
+             cudaStreamCreate,
+             cudaLaunchKernel,

pkgs/taopencl/default.nix

@@ -0,0 +1,46 @@
+{
+  stdenv,
+  automake,
+  autoconf,
+  libtool,
+  gnumake,
+  boost,
+  mpi,
+  gcc,
+  autoreconfHook,
+  ocl-icd,
+  opencl-headers,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "taopencl";
+  version = finalAttrs.src.shortRev;
+
+  src = builtins.fetchGit {
+    url = "git@gitlab-internal.bsc.es:task-awareness/taopencl/taopencl.git";
+    ref = "master";
+    rev = "c3b7b32ae8fa4af7ceff598532a881f8f1490aaf";
+  };
+
+  enableParallelBuilding = true;
+  separateDebugInfo = true;
+
+  configureFlags = [
+    "--with-opencl-lib=${ocl-icd}/lib"
+    "--with-opencl-include=${opencl-headers}/include"
+  ];
+
+  buildInputs = [
+    autoreconfHook
+    automake
+    autoconf
+    libtool
+    gnumake
+    boost
+    mpi
+    gcc
+  ];
+
+  dontDisableStatic = true;
+  hardeningDisable = [ "all" ];
+})

secrets/ceph-user.age

@@ -1,29 +1,25 @@
 age-encryption.org/v1
--> ssh-ed25519 AY8zKw Crgof1PMHzv3jBw8VeJAst6FKSoyqPFdANFpf79CAgo
+-> ssh-ed25519 AY8zKw /gmhFOFqOs8IobAImvQVKeM5Y6k0FpuR61/Cu5drVVI
-7fagE5BmlWdTsdY/i3RbExu1KBcjW1LQXbYwu6chxlk
+g9FXJg2oIoien0zJ70FWHwSTM8SBwbpS188S3Swj7EM
--> ssh-ed25519 sgAamA tGRCaK8mjvz65YziXjRcjMOHIRoyGNJFzBEEbivXPDo
+-> ssh-ed25519 sgAamA opPjlWPhSiI0Rd5l7kd204S5FXFLcQcQftyKb7MDmnU
-YLzE5a3J81r+gzkfZIeh9gS+mXzMooC82tBbZ+C3C8o
+3XrRDVnglCP+vBwvfd1rP5gHttsGDHyXwbf10a8/kKY
--> ssh-ed25519 HY2yRg +vhO1/vdGPM1JnZRsvVnViFWaFWUZ7MIqvWdePivkxA
+-> ssh-ed25519 HY2yRg QKZbubM76C3tobPoyCFDRclA9Pzb2fC7s4WOoIgdORc
-2K+JdN82DTeGh9QwZBTaghg8C5BCLoEsOgTCM64PU28
+K5kckU0KhQFTE6SikJXFJgM41Tco5+VqOsaG0qLrY1Q
--> ssh-ed25519 fw2Xhg NHDn0dq32I/AVdUZlpzBX6retlEYEUipde7A9R90qW4
+-> ssh-ed25519 fw2Xhg +ohqts8dLFjvdHxrGHcOGxU0dm+V3N//giljHkobpDM
-SJO78ooqEwfHlBRW+YCzgSQJb1JHNo8jz37t3qvLClE
+jR/UzGrfS9lrJ/VeolKLxfzeJAf2fIB2pdIn/6ukqNk
--> ssh-ed25519 G5LX5w d4HfLzI2623artkR2FIfRJgr5yb2BKZJUWqPnwOWDCk
+-> ssh-ed25519 tcumPQ 3DPkDPIQQSVtXSLzIRETsIyXQ0k1o18Evn6vf+l/6R8
-Kh50QESJZSjaJPyp3xroHGn0fD5pPNEYgKkDdqxGpjs
+bLXF62OmJjnOT1vvgq3+AcOKKSG5NonrK5EqCVc0Mwo
--> ssh-ed25519 tcumPQ wQyOKtT15Qezs3cyv5/xxIPVD7Jyk6N6ZLkfxxBHLTo
+-> ssh-ed25519 JJ1LWg 2Wefc7eLolMU5InEmCNTq21Mf71mI0a2N1HgDrlHvy4
-rKlRBjJdfDVT6U8211+ssFF8yY9yRs1u3GhCSvsw2oE
+qXFW9CQBnrzubZ0mzS0Io2WGRrwGBkmeYndBTcZn/fM
--> ssh-ed25519 JJ1LWg 98tF1MdA244xNny4w3RnMFuubf4WcuQaZf2bN2Uq8Qc
+-> ssh-ed25519 cDBabA oiH36AoIt/fFFYgnoxtH7OoetP+2/wjtn8qo3RJDSHc
-MA1Xh1H9vHisVYdqkxNeBkngtn8cYuT2eSimvooIXYo
+qKmkxy1aZGP4ZwC0iH7n7hiJ0+rFQYvjQb5O1a1Z0r4
--> ssh-ed25519 cDBabA imJ0rXLQETELP7yo3sArhqA9nJwY+S6gkC7tA7CJsQA
+-> ssh-ed25519 cK5kHw bX3RtO5StMejUYWAaA37fjHA5nO7Xs1vWDQk3yOjs2o
-pKMHW/KDAoEj5ZD64VKekg6et9hlS2PKSgDw3eB3eu8
+Egxmcf8FKAd+E5hMLmhV1yQsCo5rJyUazf1szOvpTAM
--> ssh-ed25519 WY7yGw +2g5021/02HvLxLqq42ynr6qKgOKJ3J5GgB1a1bmFXg
+-> ssh-ed25519 CAWG4Q oKqqRDJH0w8lsoQBQk0w8PO+z5gFNmSaGBUSumvDp1I
-fYvj52R6bM6ngPOZ2lwVezTJnx+8LJBbdnaapKKbyd0
+m1zWp9MfViAmtpbJhqOHraIokDaPKb0DvvO4vAGCTWI
--> ssh-ed25519 cK5kHw fLZ6yF3NggJ724rjYqhs5ZZh1xUExuK+ITAyqONluzk
+-> ssh-ed25519 xA739A G26kPOz6sbFATs+KAr7gbDvji13eA1smFusQAOJXMwA
-NS9OMX70XEHrbPQnmC4KB/eoiHChIb8DwDLYJiwOLUU
+Sppvz7A103kZoNxoGsd6eXeCvVh7mBE2MRwLFj9O1dY
--> ssh-ed25519 CAWG4Q tVduE/wMzdfS+DjNbU3Q4blNhL/A63IehNSZGJkJjD0
+-> ssh-ed25519 MSF3dg 55ekNcp+inbUd+GQ/VZ7BoBASaJ8YDqF74CVXy1PUxQ
-jEBB5zG+gLA/88YF+KqWQsNH7lfCsWNvAkrgfbescFs
+aTHLLAbzQPWWld/OT3BKebc6FcmsqMTaWCPBGm1UHic
--> ssh-ed25519 xA739A ZhFvev77I+YOl1YSHKn2ZcEvGoLjWOILufjd4q/k8HM
+--- mVkAMnI9XQhS3fMiFuuXP/yLR9wEG9+Rr8pA4Uc0avY
-YXEtHHtjPQlgZW60zHgHm7CLI6vYiRo+AM8QERL9tCg
+<04>DU <20><>s<EFBFBD><73><EFBFBD><EFBFBD>j<EFBFBD><6A>M<EFBFBD><4D>$<24>[<5B>M<EFBFBD><4D><EFBFBD><03>[_<>K7s<37>ju<>v<EFBFBD>D<EFBFBD>4<EFBFBD>g<EFBFBD><67>܄3<>Gn<47><6E><EFBFBD> ɽ<>P<EFBFBD>7~rZs<><73>
--> ssh-ed25519 MSF3dg 9DvLNheBU1vlfW2zNNxBrGnJ6k4P5ox7s+OGKlgRdyQ
-wseHfLGHz0huNi5sZsNOfeNkm6Kjjx0SZ8lK4/oXtUQ
---- bnJE+14onuSla0XmckD4z/wChWGZh6exbkcbyhcmNYU
-<EFBFBD><EFBFBD>t<>N猈<><10>U<EFBFBD>w▮i2<69><32>-<2D>iV'(<1E>IF<49><46>	S<><53>xs/s<><73>	<09><>NDm<44>Q<EFBFBD><51><EFBFBD>o<EFBFBD><6F><EFBFBD><EFBFBD>wZv<7F><76>.\

secrets/gitlab-runner-docker-token.age

@@ -1,13 +1,13 @@
 age-encryption.org/v1
--> ssh-ed25519 HY2yRg eHM55QsHK1ca9b5nP3EoVUZYu0w2d4B5tkilNK0j/lw
+-> ssh-ed25519 HY2yRg U2KQWviZIVNemm9e8h7H+eOzoYNxXgLLS3hsZLMAuGk
-6Na6lkMe0fOd7+vNP1fLIaVEQDUw5m65Wh8jUH1I6C0
+6n5dH1McNzk3rscP4v2pqZYDWtUFMd15rZsEd/mqIFM
--> ssh-ed25519 cK5kHw 0ekhoBYwF7OSWwn4P5f/J4gXb9UHJAWGKV0yI7HCzzE
+-> ssh-ed25519 cK5kHw Ebrj/cpz1cFWAYAV9OxgyyH85OEMUnfUIV66p7jaoFY
-2Q+Tt5jXAB9ip9jf1z+jeM4FSiqd1w5DNtbqtacuOcM
+6J7hWqODtS/fIF4BpxhxbrxZq5vbolvbLqRKqazT02M
--> ssh-ed25519 CAWG4Q Jmw4v9efOFXHjjNky96q/d6vGBP5dNM4wK9zoGrwOh8
+-> ssh-ed25519 CAWG4Q mXqoQH9ycHF7u0y8mazCgynHxNLxTnrmQHke+2a5QCc
-u5I17wcIq8/2ARWckDXsYckhfX0jWE4AEm5mip/KHws
+mq6PdSF+KOqthuXwzTCsOQsi5KG0z1wHUck+bSTyOBY
--> ssh-ed25519 xA739A 10pPeC2YG9DJzaQlt7p+fGo27VDiL2dN6JmvY2npcUw
+-> ssh-ed25519 xA739A TADeswueqDEroZWLjMw3RDNwVQ2xRD+JUMVZENovn0M
-4aRV8DekYeL9HagGWgOSjlYnPKmYdKZH8Aw4lRdm+r8
+KFlnSjVFbjc+ZsbY8Ed7edC5B01TJGzd/dSryiLArPc
--> ssh-ed25519 MSF3dg hDwIE3Su6cN3sq2E5v/oy6vTNfxTT1ZPts85//gIhwY
+-> ssh-ed25519 MSF3dg Pq+ZD8AqJGDHDbd4PO1ngNFST8+6C2ghZkO/knKzzEc
-aoiaGjQYJB1ededhIuVBCKDRLIOVThWz1pSTvg65J3Y
+wyiL/u38hdQMokmfTsBrY7CtYwc+31FG4EDaqVEn31U
---- OYPAGb5U/nwLOIV5VchSvxhChjNnwzbEgU9glSkWCl4
+--- 1z4cOipayh0zYkvasEVEvGreajegE/dqBV7b6E7aFh0
-<EFBFBD>=<EFBFBD><EFBFBD><EFBFBD>c<EFBFBD>WȟJSaІ&<26><1F>ቧ)E<><0B> C<><43>J~u<>c<63><7F>2<EFBFBD><32>v<EFBFBD><76><EFBFBD><03><>s<EFBFBD><73><EFBFBD>vf<76><10><>X7(<28>~<7E><1A>=XCi;<3B>״<EFBFBD>\ߢ<><DFA2><EFBFBD>ܣ<EFBFBD><10><><07>ɳCe<43>D;;X*<2A>3<EFBFBD>i<EFBFBD><69>r<EFBFBD>Em<45><6D><
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD>R<EFBFBD>@<40>/i<>I'<27><><EFBFBD>Nx<4E>r"<1D>`<1E>O<EFBFBD><4F><EFBFBD>y<><79>8<EFBFBD><38> \/<2F><>I<19><17>D<EFBFBD>`<60>ߓ<EFBFBD><DF93><EFBFBD><1E><04>uy<75><79><EFBFBD>:9Lt<4C><1D><><EFBFBD>؋<EFBFBD><D88B><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>AU<41><55><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>`<60>;<3B>q8<71>GLU#<23>i<EFBFBD>y<EFBFBD><79>i<03>ڜ

secrets/secrets.nix

@@ -22,7 +22,6 @@ in
   "tent-gitlab-runner-pm-docker-token.age".publicKeys = tent;
   "tent-gitlab-runner-pm-shell-token.age".publicKeys = tent;
   "tent-gitlab-runner-bsc-docker-token.age".publicKeys = tent;
-  "tent-nextcloud-admin-pass.age".publicKeys = tent;
   "vpn-dac-login.age".publicKeys = tent;
   "vpn-dac-client-key.age".publicKeys = tent;
 

secrets/vpn-dac-login.age

@@ -1,13 +1,14 @@
 age-encryption.org/v1
--> ssh-ed25519 G5LX5w /9lcJOXC9CN02+XLswUaJ0H7jU6Xhjd8Xg4+KY0l1Vc
+-> ssh-ed25519 G5LX5w SRJhNenoQXbT1FgX3TMPnVH5P6oe2eHot+M1YsEjsEk
-fCLzsLc9zrocM8SHOKyZwt6eUEr8r1WLug9RLi63KU0
+hfTSLgKi98Eh7JK5o7x2POpTEtQlQCpEa3keUFYCuME
--> ssh-ed25519 cK5kHw 1qza6h2NRSs4g8LYdFU7E+Dn1CgdtCU7DPdYInP1GwM
+-> ssh-ed25519 cK5kHw z5TwWJTkvx7HztjXHJW/aCOtOfPrQaLP0gyIT7rXcyU
-/6uk7pTFkNTRTI7nA+x4y4CyOBVQVXX2lnpOg3ktPe4
+b4NCpHfasgvkLLr+6LcWUl60p59aSNnfp3bl2OFYXo0
--> ssh-ed25519 CAWG4Q o+vyzcejSaNVYPSGzzOdzaqPByZ6zA1uaJf4KOg+wQA
+-> ssh-ed25519 CAWG4Q 4VpS1/OnFe8nxcQbRTKNhjsh/ZQ5cbhSMXwK/jjQ+3o
-wfZmWrDSfRV8C+Hu+SeZDcomf/qigBqxuQK77SfnuEo
+WF9wvOkqVml4UcEzyzeumKuUwCwwr2zvKLMg+PCB8nk
--> ssh-ed25519 xA739A +rBsOC+IBE3lmc/pfrziftLIqMSyaGMsggRjC5Pqwl0
+-> ssh-ed25519 xA739A 67FhuJ070jBVMt/xbKHWhfri6iIm0FyaFvzQabsvFBM
-xa7ulLz2+YC3g2hu7e9XhRYDIUb2sriaaigJRYF2oB8
+1G5/913dDv/r/6p1x/c5YiUnZzrX/LvIj33KW+PN0KU
--> ssh-ed25519 MSF3dg TK6PmKjjQt8ni0mJLCt7P41lUsgimlj3o5Q6n3N+DE4
+-> ssh-ed25519 MSF3dg Bj/yB4N2wkyHCHC22tcjjJAA4ebSamN0Z4UVX3ZnryI
-ne+s3ctcg8cBjY06LY2lrW7wcxomvKHxu6MlirEA8Kg
+6D/ZgTs+j+MGDAbPU5zyK0i9zN6tQy68IcOnQZ27mYg
---- eorg2ckkUZ1Ogi4iTTg2MoiVBwl1F0RCmH2D8N1d1So
+--- 169erk3ICSYLs4FPEuXCn7QlekWhsmSn0Lr+/R14I5Q
-<EFBFBD><EFBFBD><EFBFBD>8<1C><><EFBFBD><EFBFBD><EFBFBD><12>i<17>$]K<>J=2Z<1D><>ӼF<D3BC>][<14><><EFBFBD>8<EFBFBD><38>ޤ<12>	<09>=<3D><>
LD/<2F>gz
+<EFBFBD><EFBFBD><EFBFBD><EFBFBD><05>ҽ3<D2BD>s<EFBFBD>
+w<EFBFBD><EFBFBD>4D<EFBFBD><EFBFBD>b.<2E><><EFBFBD>"|<7C><><EFBFBD>)"<22><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>;<3B>.<2E>ɫ7)<29>LeC<05>=S؟

secrets/wg-fox.age

@@ -1,13 +1,14 @@
 age-encryption.org/v1
--> ssh-ed25519 cDBabA So/Tqwdwd7G0PbE4RwH2qDrNcdqTkhFjF4IJrLKKpkM
+-> ssh-ed25519 cDBabA heyW9/cxgwFX9IexQIXjAQDWGQPNcMXcArQp2Rxsqx4
-MEA5dzlUeFXm3pa+ndxrcE0ZWdO00Xf98+Q8U9LZ+cQ
+o9MQ7EH8PDDjsJdpH9F3Xq2zUoaDAJQlfFmYucSFs6Y
--> ssh-ed25519 cK5kHw sCHD/hHBOfMBUQXkLG3MBPNC4ebLOXW37OlF/C8FEjU
+-> ssh-ed25519 cK5kHw Sza4pos7K3qW3omEeyidI/jszJNf9smemSZnUJfCIww
-4TFbKoy23Ic2vteXZ02fMrFxyb4NxyWaSo5I8dn48mI
+D6vazXki7hIYraIuSiGPS+FPbkFUwHhHWDf52OhEIMg
--> ssh-ed25519 CAWG4Q KYGPAXTx8H5cBC3YIBxi5B7OeF15C9rEIPFCcG0vEDw
+-> ssh-ed25519 CAWG4Q YexIHueOIMmIN8JIDyNUOKBkyz/k18HqV3hTXh48KlM
-9LC2Zvp1Oiau1/hfPf+nJknl6BUSr+lzTn6TozZNxJg
+xh8UJzzWT6ByN+Dpn4JrMNsjGC/uc/v6LynwjBDz9NQ
--> ssh-ed25519 xA739A hpvNBHPgYRtUx0HyUAdCW8s7QTmGyPXwzRHb8qYoeG0
+-> ssh-ed25519 xA739A KySG3TXdqfCMUkVEDGa74B0op745s3XGYxFLyAXSQAc
-QkUZINY7Fr7HpyY6lbIMcP+hGO3oCmLL6N+yDN4weyk
+5EI/yb5ctW9Qu18bHm3/sK97kwGcKzzmWvPSCWm89XA
--> ssh-ed25519 MSF3dg P9TmEfXS+hyxsbVKja58UWAFpad0ZS3LhwrMkLnSNAY
+-> ssh-ed25519 MSF3dg MNxnNj0fHmri8ophexXPNjRUBUWrzcuk5S1mucxUMTE
-hiHuh7HhoYwHi2KFbCczXJoF3On9eqjD1Wsp9Q1NW/w
+GVFWXtISEU8ZmlwL4nh4weAgfGrt2GHX0DTzbpS6zg8
---- SN3peoDvjXuD/Q4DdebQFam1CE22NyGZlMmnKyCTuX8
+--- UdrqkYG2ZApAuwdZeNhC50NP2rkD/Ol6y8nJa4RHx7Y
-s<0F><><14><>&׳֦<D7B3><D6A6><EFBFBD><EFBFBD>
}<7D>#In0&<26><1F>{<7B>1<EFBFBD><31>.
+<EFBFBD>ܻ<EFBFBD>m(<28><><EFBFBD>><3E>H<48>Y87<><37>G<0F>+*<12><><EFBFBD><EFBFBD>9V<>.<2E><><EFBFBD><EFBFBD><03><><EFBFBD>p<EFBFBD>Oo<4F>=+哇<>P0<50><30>{<7B>)<29><17><><EFBFBD><EFBFBD>><3E>z3P^
+u

test/compilers/opencl.c

@@ -0,0 +1,127 @@
+#include <CL/cl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define BUF_LEN 128
+
+cl_int exit_err = CL_SUCCESS;
+
+#define CHECK(cmd)                                                             \
+  do {                                                                         \
+    cl_int err = cmd;                                                          \
+    if (err != CL_SUCCESS) {                                                   \
+      printf("[ERROR] " #cmd " (Error code: %d)\n"                             \
+             "@ "__FILE__                                                      \
+             ":%d",                                                            \
+             err, __LINE__);                                                   \
+      exit_err = err;                                                          \
+      goto cleanup;                                                            \
+    }                                                                          \
+  } while (0)
+
+const char *kernel_source = "__kernel void vector_add(__global const float *a, "
+                            "__global const float *b, __global float *c) {\n"
+                            "    int gid = get_global_id(0);\n"
+                            "    c[gid] = a[gid] + b[gid];\n"
+                            "}\n";
+
+cl_int test_kernel_compilation(cl_platform_id platform) {
+  cl_device_id device = NULL;
+  cl_context context = NULL;
+  cl_program program = NULL;
+  cl_int err = CL_SUCCESS;
+  char device_name[BUF_LEN];
+
+  // Get first device for this platform
+  CHECK(clGetDeviceIDs(platform, CL_DEVICE_TYPE_ALL, 1, &device, NULL));
+
+  // Get device name
+  CHECK(clGetDeviceInfo(device, CL_DEVICE_NAME, sizeof(device_name),
+                        device_name, NULL));
+  printf("    Device: %s\n", device_name);
+
+  context = clCreateContext(NULL, 1, &device, NULL, NULL, &err);
+  CHECK(err);
+
+  program = clCreateProgramWithSource(context, 1, &kernel_source, NULL, &err);
+  CHECK(err);
+
+  err = clBuildProgram(program, 1, &device, NULL, NULL, NULL);
+  if (err != CL_SUCCESS) {
+    printf("      [ERROR] Kernel compilation failed (Error code: %d)\n", err);
+
+    // Build log
+    size_t log_size;
+    CHECK(clGetProgramBuildInfo(program, device, CL_PROGRAM_BUILD_LOG, 0, NULL,
+                                &log_size));
+    char *log = (char *)malloc(log_size);
+    CHECK(clGetProgramBuildInfo(program, device, CL_PROGRAM_BUILD_LOG, log_size,
+                                log, NULL));
+    printf("      Build log:\n%s\n", log);
+    free(log);
+    goto cleanup;
+  }
+
+  printf("      [OK] Kernel compiled successfully!\n");
+
+cleanup:
+  if (program)
+    clReleaseProgram(program);
+  if (context)
+    clReleaseContext(context);
+  printf("\n");
+
+  return exit_err;
+}
+
+int main() {
+  cl_uint num_platforms;
+  cl_platform_id *platforms = NULL;
+
+  // Get number of platforms
+  CHECK(clGetPlatformIDs(0, NULL, &num_platforms));
+
+  printf("Found %d OpenCL platform(s)\n\n", num_platforms);
+
+  if (num_platforms == 0) {
+    printf("No OpenCL platforms found!\n");
+    return EXIT_FAILURE;
+  }
+
+  // Allocate memory for platforms
+  platforms = (cl_platform_id *)malloc(sizeof(cl_platform_id) * num_platforms);
+
+  // Get platform IDs
+  CHECK(clGetPlatformIDs(num_platforms, platforms, NULL));
+
+  // Query each platform and test kernel compilation
+  for (cl_uint i = 0; i < num_platforms; i++) {
+    char platform_name[BUF_LEN];
+    char platform_vendor[BUF_LEN];
+    char platform_version[BUF_LEN];
+
+    CHECK(clGetPlatformInfo(platforms[i], CL_PLATFORM_NAME,
+                            sizeof(platform_name), platform_name, NULL));
+    CHECK(clGetPlatformInfo(platforms[i], CL_PLATFORM_VENDOR,
+                            sizeof(platform_vendor), platform_vendor, NULL));
+    CHECK(clGetPlatformInfo(platforms[i], CL_PLATFORM_VERSION,
+                            sizeof(platform_version), platform_version, NULL));
+
+    printf("Platform %d: %s\n", i, platform_name);
+    printf("  Vendor: %s\n", platform_vendor);
+    printf("  Version: %s\n", platform_version);
+
+    // Test kernel compilation
+    CHECK(test_kernel_compilation(platforms[i]));
+  }
+
+cleanup:
+  if (platforms)
+    free(platforms);
+
+  if (exit_err == CL_SUCCESS)
+    return EXIT_SUCCESS;
+
+  return EXIT_FAILURE;
+}

test/compilers/opencl.nix

@@ -0,0 +1,104 @@
+{
+  stdenv,
+  ocl-icd,
+  opencl-headers,
+  pocl,
+  clinfo,
+  runCommand,
+  lib,
+}:
+
+stdenv.mkDerivation (finalAttrs: {
+  pname = "opencl-pocl-test";
+  version = "1.0.0";
+
+  src = ./opencl.c;
+
+  dontUnpack = true;
+  dontConfigure = true;
+
+  buildInputs = [
+    ocl-icd
+    opencl-headers
+  ];
+
+  buildPhase = ''
+    runHook preBuild
+
+    $CC -Wall -Wextra -D CL_TARGET_OPENCL_VERSION=100 $src -o ocl-hello -lOpenCL
+
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/bin
+    cp ocl-hello $out/bin
+
+    runHook postInstall
+  '';
+
+  passthru = {
+    test-icd =
+      runCommand "custom-clinfo"
+        {
+          nativeBuildInputs =
+            assert !(lib.hasPrefix "pocl" ocl-icd.pname);
+            [
+              clinfo
+              finalAttrs.finalPackage
+              pocl
+            ];
+
+          env = {
+            POCL_DEBUG = "error,warn";
+            POCL_CACHE_DIR = "/build/pocl_cache";
+          };
+
+          requiredSystemFeatures = [ "sys-devices" ];
+        }
+
+        ''
+          set -x
+
+          mkdir $out
+
+          clinfo -l >$out/clinfo
+          clinfo >$out/clinfo-full
+
+          ocl-hello >$out/hello
+
+          for i in $out/*; do
+            grep "Portable Computing Language" $i
+          done
+
+          echo $OCL_ICD_VENDORS >$out/env
+
+          grep "pocl.*/etc/OpenCL/vendors" $out/env
+
+          set +x
+        '';
+    # this needs: ocl-icd = pocl-noicd
+    test-noicd =
+      runCommand "custom-clinfo"
+        {
+          nativeBuildInputs = [
+            finalAttrs.finalPackage
+          ];
+
+          env = {
+            POCL_DEBUG = "error,warn";
+            POCL_CACHE_DIR = "/build/pocl_cache";
+          };
+
+          requiredSystemFeatures = [ "sys-devices" ];
+        }
+
+        ''
+          ocl-hello >$out
+
+          grep "Portable Computing Language" $out
+        '';
+  };
+})

test/compilers/pocl.nix

@@ -0,0 +1,27 @@
+{
+  runCommand,
+  pocl,
+  clinfo,
+}:
+
+runCommand "clinfo-pocl"
+  {
+    nativeBuildInputs = [
+      clinfo
+      pocl
+    ];
+
+    requiredSystemFeatures = [ "sys-devices" ];
+
+    env = {
+      POCL_DEBUG = "error,warn";
+      POCL_CACHE_DIR = "/build/pocl_cache";
+    };
+  }
+  ''
+    echo $OCL_ICD_VENDORS
+    clinfo >$out
+
+    # check that we have PoCL:
+    grep "Portable Computing Language" $out
+  ''