server: add scanservjs, nixmsi: refix boot

flake.nix

@@ -131,6 +131,7 @@
           nixos-mailserver.nixosModules.default
           ./system/devices/hp-probook-g0-server.nix
           (if devMaubot then import /${devPath}/maubot.nix/module else maubot.nixosModules.default)
+          ./system/modules/scanservjs.nix
         ];
       };
       nixserver-cross = crossConfig nixserver;

home/common/nvim.nix

@@ -178,9 +178,8 @@
     ]);
     plugins = let ps = pkgs.vimPlugins; in map (x: if x?config && x?plugin then { type = "lua"; } // x else x) [
       ps.vim-svelte
-      # TODO remove on next nvim update (0.8.3/0.9? whenever they add builtin nix syntax)
-      # testing the removal
-      # ps.vim-nix
+      # vim-nix isn't necessary for syntax highlighting, but it improves overall editing experience
+      ps.vim-nix
       { plugin = pkgs.vimUtils.buildVimPluginFrom2Nix {
           pname = "vscode-nvim";
           version = "2023-02-10";

pkgs/default.nix

@@ -5,7 +5,7 @@
 , pkgs' ? pkgs
 , ... }:
 let
-  inherit (pkgs) callPackage;
+  inherit (pkgs') callPackage;
   sources = import ./_sources/generated.nix {
     inherit (pkgs) fetchgit fetchurl fetchFromGitHub dockerTools;
   };
@@ -13,21 +13,6 @@ let
 in
 
 {
-  linux-firmware = if pkgs.system == "x86_64-linux" then pkgs.stdenvNoCC.mkDerivation {
-    inherit (pkgs.linux-firmware) pname version src meta;
-    dontFixup = true;
-    passthru = { inherit (pkgs.linux-firmware) version; };
-    installFlags = [ "DESTDIR=$(out)" ];
-
-    # revert microcode updates which break boot for me
-    patches = [ ./revert-amd-ucode-update.patch ];
-    postPatch = ''
-      cp ${pkgs.fetchurl {
-        url = "https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/plain/amd-ucode/microcode_amd_fam17h.bin?id=b250b32ab1d044953af2dc5e790819a7703b7ee6";
-        hash = "sha256-HnKjEb2di7BiKB09JYUjIUuZNCVgXlwRSbjijnuYBcM=";
-      }} amd-ucode/microcode_amd_fam17h.bin
-    '';
-  } else pkgs.linux-firmware;
   inherit (nix-gaming) faf-client osu-lazer-bin;
   inherit nixForNixPlugins;
   nix = nixForNixPlugins;
@@ -100,6 +85,7 @@ in
     '';
   };
   rofi-steam-game-list = callPackage ./rofi-steam-game-list { };
+  scanservjs = callPackage ./scanservjs.nix { };
   searxng = pkgs'.python3.pkgs.toPythonModule (pkgs.searxng.overrideAttrs (old: {
     inherit (sources.searxng) src;
     version = "unstable-" + sources.searxng.date;

pkgs/scanservjs.nix

@@ -0,0 +1,91 @@
+{ lib
+, fetchFromGitHub
+, buildNpmPackage
+, fetchNpmDeps
+, nodejs
+}:
+
+let
+  version = "2.27.0";
+  src = fetchFromGitHub {
+    owner = "sbs20";
+    repo = "scanservjs";
+    rev = "v${version}";
+    hash = "sha256-GFpfH7YSXFRNRmx8F2bUJsGdPW1ECT7AQquJRxiRJEU=";
+  };
+
+  depsHashes = {
+    server = "sha256-V4w4euMl67eS4WNIFM8j06/JAEudaq+4zY9pFVgTmlY=";
+    client = "sha256-r/uYaXpQnlI90Yn6mo2KViKDMHE8zaCAxNFnEZslnaY=";
+  };
+
+  serverDepsForClient = fetchNpmDeps {
+    inherit src nodejs;
+    sourceRoot = "${src.name}/packages/server";
+    name = "scanservjs-server";
+    hash = depsHashes.server or lib.fakeHash;
+  };
+
+  # static client files
+  client = buildNpmPackage ({
+    pname = "scanservjs-static";
+    inherit version src nodejs;
+
+    sourceRoot = "${src.name}/packages/client";
+    npmDepsHash = depsHashes.client or lib.fakeHash;
+
+    preBuild = ''
+      cd ../server
+      chmod +w package-lock.json . /build/source/
+      npmDeps=${serverDepsForClient} npmConfigHook
+      cd ../client
+    '';
+
+    env.NODE_OPTIONS = "--openssl-legacy-provider";
+
+    dontNpmInstall = true;
+    installPhase = ''
+      mv /build/source/dist/client $out
+    '';
+  });
+
+in buildNpmPackage {
+  pname = "scanservjs";
+  inherit version src nodejs;
+
+  sourceRoot = "${src.name}/packages/server";
+  npmDepsHash = depsHashes.server or lib.fakeHash;
+
+  preBuild = ''
+    chmod +w /build/source
+    substituteInPlace src/server.js --replace "express.static('client')" "express.static('${client}')"
+    substituteInPlace src/api.js --replace \
+      '`''${config.previewDirectory}/default.jpg`' \
+      "'$out/lib/node_modules/scanservjs-api/data/preview/default.jpg'"
+    substituteInPlace src/application.js --replace \
+      "'../../config/config.local.js'" \
+      "process.env.NIX_SCANSERVJS_CONFIG_PATH"
+    substituteInPlace src/classes/user-options.js --replace \
+      "const localPath = path.join(__dirname, localConfigPath);" \
+      "const localPath = localConfigPath;"
+    substituteInPlace src/configure.js --replace \
+      "fs.mkdirSync(config.outputDirectory, { recursive: true });" \
+      "fs.mkdirSync(config.outputDirectory, { recursive: true }); fs.mkdirSync(config.previewDirectory, { recursive: true });"
+  '';
+
+  postInstall = ''
+    mkdir -p $out/bin
+    makeWrapper ${nodejs}/bin/node $out/bin/scanservjs \
+      --set NODE_ENV production \
+      --add-flags "'$out/lib/node_modules/scanservjs-api/src/server.js'"
+  '';
+
+  meta = with lib; {
+    description = "SANE scanner nodejs web ui";
+    longDescription = "scanservjs is a simple web-based UI for SANE which allows you to share a scanner on a network without the need for drivers or complicated installation.";
+    homepage = "https://github.com/sbs20/scanservjs";
+    license = licenses.gpl2Only;
+    mainProgram = "scanservjs";
+    maintainers = with maintainers; [ chayleaf ];
+  };
+}

system/devices/msi-delta-15-workstation.nix

@@ -11,7 +11,7 @@ let
   dataroot = "/dev/disk/by-uuid/${datarootUuid}";
 in {
   imports = [
-    ../hardware/msi-delta-15.nix
+    ../hardware/msi-delta-15
     ../hosts/nixmsi.nix
   ];
 

system/hardware/msi-delta-15.nix

@@ -1,24 +0,0 @@
-{ hardware
-, ... }:
-
-{
-  imports = with hardware; [
-    common-pc-ssd # enables fstrim
-    common-cpu-amd # microcode
-    common-cpu-amd-pstate # amd-pstate
-    common-gpu-amd # configures drivers
-    common-pc-laptop # enables tlp
-  ];
-  common.resolution = "1920x1080";
-  vfio.pciIDs = [ "1002:73df" "1002:ab28" ];
-  boot = {
-    initrd.availableKernelModules = [ "nvme" "xhci_pci" ];
-    kernelParams = [
-      # disable PSR to *hopefully* avoid random hangs
-      # this one didnt help
-      "amdgpu.dcdebugmask=0x10"
-      # maybe this one will?
-      "amdgpu.noretry=0"
-    ];
-  };
-}

system/hardware/msi-delta-15/default.nix

@@ -0,0 +1,54 @@
+{ hardware
+, ... }:
+
+{
+  imports = with hardware; [
+    common-pc-ssd # enables fstrim
+    common-cpu-amd # microcode
+    common-cpu-amd-pstate # amd-pstate
+    common-gpu-amd # configures drivers
+    common-pc-laptop # enables tlp
+  ];
+  common.resolution = "1920x1080";
+  vfio.pciIDs = [ "1002:73df" "1002:ab28" ];
+  boot = {
+    initrd.availableKernelModules = [ "nvme" "xhci_pci" ];
+    kernelParams = [
+      # disable PSR to *hopefully* avoid random hangs
+      # this one didnt help
+      "amdgpu.dcdebugmask=0x10"
+      # maybe this one will?
+      "amdgpu.noretry=0"
+    ];
+  };
+  # TODO: really, really, please, I want latest firmware to work...
+  nixpkgs.overlays = [
+    (final: prev: {
+      amd-ucode = prev.amd-ucode.override { inherit (final) linux-firmware; };
+      linux-firmware = prev.stdenvNoCC.mkDerivation {
+        inherit (prev.linux-firmware) pname version meta src;
+        dontFixup = true;
+        passthru = { inherit (prev.linux-firmware) version; };
+        installFlags = [ "DESTDIR=$(out)" ];
+
+        # revert microcode updates which break boot for me
+        patches = [
+          ./revert-amd-ucode-update-fam17h.patch
+          ./revert-amd-ucode-update-fam19h.patch
+        ];
+        postPatch = ''
+          cp ${final.fetchurl {
+            name = "microcode_amd_fam17h.bin";
+            url = "https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/plain/amd-ucode/microcode_amd_fam17h.bin?id=b250b32ab1d044953af2dc5e790819a7703b7ee6";
+            hash = "sha256-HnKjEb2di7BiKB09JYUjIUuZNCVgXlwRSbjijnuYBcM=";
+          }} amd-ucode/microcode_amd_fam17h.bin
+          cp ${final.fetchurl {
+            name = "microcode_amd_fam19h.bin";
+            url = "https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/plain/amd-ucode/microcode_amd_fam19h.bin?id=0ab353f8d8aa96d68690911cea22ec538f3095c4";
+            hash = "sha256-LlA+E4EVQpfjD3/cg6Y52BsCGW/5ZfY0J2UnCUI/3MQ";
+          }} amd-ucode/microcode_amd_fam19h.bin
+        '';
+      };
+    })
+  ];
+}

system/hardware/msi-delta-15/revert-amd-ucode-update-fam19h.patch

@@ -0,0 +1,64 @@
+diff --git a/WHENCE b/WHENCE
+index 54aadb0..99cee97 100644
+--- a/WHENCE
++++ b/WHENCE
+@@ -3924,7 +3924,7 @@ Raw: amd-ucode/microcode_amd_fam17h.bin
+ Version: 2023-07-19
+ File: amd-ucode/microcode_amd_fam19h.bin
+ Raw: amd-ucode/microcode_amd_fam19h.bin
+-Version: 2023-08-08
++Version: 2023-07-18
+ File: amd-ucode/README
+ 
+ License: Redistributable. See LICENSE.amd-ucode for details
+diff --git a/amd-ucode/README b/amd-ucode/README
+index fac1152..1d39da3 100644
+--- a/amd-ucode/README
++++ b/amd-ucode/README
+@@ -37,19 +37,6 @@ Microcode patches in microcode_amd_fam17h.bin:
+   Family=0x17 Model=0x01 Stepping=0x02: Patch=0x0800126e Length=3200 bytes
+ 
+ Microcode patches in microcode_amd_fam19h.bin:
+-  Family=0x19 Model=0x11 Stepping=0x01: Patch=0x0a10113e Length=5568 bytes
+-  Family=0x19 Model=0x11 Stepping=0x02: Patch=0x0a10123e Length=5568 bytes
+-  Family=0x19 Model=0xa0 Stepping=0x02: Patch=0x0aa00212 Length=5568 bytes
+   Family=0x19 Model=0x01 Stepping=0x01: Patch=0x0a0011d1 Length=5568 bytes
+   Family=0x19 Model=0x01 Stepping=0x00: Patch=0x0a001079 Length=5568 bytes
+   Family=0x19 Model=0x01 Stepping=0x02: Patch=0x0a001234 Length=5568 bytes
+-  Family=0x19 Model=0xa0 Stepping=0x01: Patch=0x0aa00116 Length=5568 bytes
+-
+-NOTE: For Genoa (Family=0x19 Model=0x11) and Bergamo (Family=0x19 Model=0xa0),
+-either AGESA version >= 1.0.0.8 OR a kernel with the following commit is
+-required:
+-a32b0f0db3f3 ("x86/microcode/AMD: Load late on both threads too")
+-
+-When late loading the patches for Genoa or Bergamo, there may be one spurious
+-NMI observed per physical core. These NMIs are benign and don't cause any
+-functional issue but will result in kernel messages being logged.
+diff --git a/amd-ucode/microcode_amd_fam19h.bin b/amd-ucode/microcode_amd_fam19h.bin
+index 02a5d05..50470c3 100644
+Binary files a/amd-ucode/microcode_amd_fam19h.bin and b/amd-ucode/microcode_amd_fam19h.bin differ
+diff --git a/amd-ucode/microcode_amd_fam19h.bin.asc b/amd-ucode/microcode_amd_fam19h.bin.asc
+index 8cff901..a32b4d6 100644
+--- a/amd-ucode/microcode_amd_fam19h.bin.asc
++++ b/amd-ucode/microcode_amd_fam19h.bin.asc
+@@ -1,11 +1,11 @@
+ -----BEGIN PGP SIGNATURE-----
+ 
+-iQEzBAABCgAdFiEE/HxsUF2vzBRxg1fK5L5TOfMornMFAmTEYrcACgkQ5L5TOfMo
+-rnN4IQf/QKbOezXZ4OYzaPANvsZQEAzLNfuylC/aQMwrPaO7daz5/zmCN4HU5XkH
+-dDT8DYfPg+fQHIgxAw0/L24xPOm5Op/QuLVDyDqVr4qvL8+65eeI+JqxD/wXMXYN
+-V34kkLM2p8iuyY1Nc8IDLXu4X75KGNPbKZlMRKMU3Pr7ai5O4ihmiAM+N6qv1KEJ
+-YToNN6vrg0qt1cv0SLM8sa4e7L1+oblUrg/o0FViYE8pxsU3ZRRVSJMUg+lKjvl/
+-1ZPGKOdD80fcNJ+ItYGHNNs3eCc3WgW7Kc/E668eH75Yu9Zt7ewWZX8Sg/mygleY
+-OzMwhbPJg4bF4zm7C/Pku7i1T2Omcg==
+-=km2X
++iQEzBAABCgAdFiEE/HxsUF2vzBRxg1fK5L5TOfMornMFAmS3F00ACgkQ5L5TOfMo
++rnNEhQgAizSV8IFpvaYNytaJKLA4uevrZneGPV4czjCXnnj1yHpfQmCTyZQnoLnx
++7gyzf7K5271zO51FBQ5z2Nm48a3XPUhMbQLNP4BZdekLiA3bRpMtSyHct6zD0ULm
++xaFaOQ7MR1tGADhlon1bDvtnOuixUhwrZhEIlR9MzQAzERKDMOAVTbxn9ZhMfYiT
++LhA791Blyyi+6Z9uh7BpaA8l8uvoxt+uuvlBTjQMR3ER/TEjgcsoy+XhhK4QKS0V
++wJCtcDle/3pF+N6SAFWiXbNZ+P8p19afhcYddDl97xtpzA6/8b20a2eHkrqnu/Ds
++jTozF9kmhiifYMYpXtXgSOwI3GRZbQ==
++=t+j1
+ -----END PGP SIGNATURE-----

system/hosts/nixmsi.nix

@@ -120,6 +120,7 @@
   # programs.wireshark.enable = true;
   # users.groups.wireshark.members = [ config.common.mainUsername ];
   services.printing.enable = true;
+  services.printing.drivers = [ pkgs.hplip ];
   services.pipewire = {
     enable = true;
     alsa.enable = true;
@@ -171,6 +172,8 @@
   services.udev.packages = [
     pkgs.android-udev-rules
   ];
+  services.avahi.enable = true;
+  services.avahi.nssmdns = true;
   environment.systemPackages = with pkgs; [
     comma
     neovim

system/hosts/nixserver/home.nix

@@ -47,6 +47,7 @@ in {
     '';
     # locations."/.well-known/acme-challenge".extraConfig = "auth_basic off;";
     locations."/".root = "/var/www/home.${cfg.domainName}/";
+    locations."/scan/".proxyPass = "http://${lib.quoteListenAddr config.services.scanservjs.settings.host}:${toString config.services.scanservjs.settings.port}/";
     locations."/grafana/" = {
       proxyPass = "http://grafana/";
       proxyWebsockets = true;
@@ -383,4 +384,12 @@ in {
     publish.addresses = true;
     publish.userServices = true;
   };
+  hardware.sane = {
+    enable = true;
+    extraBackends = with pkgs; [ hplipWithPlugin ];
+  };
+  nixpkgs.config.allowUnfreePredicate = pkg: lib.getName pkg == "hplip";
+  services.scanservjs.enable = true;
+  services.scanservjs.settings.host = "127.0.0.1";
+  services.scanservjs.settings.port = 3952;
 }

system/modules/scanservjs.nix

@@ -0,0 +1,151 @@
+{ config
+, lib
+, pkgs
+, ...}:
+
+let
+  cfg = config.services.scanservjs;
+  /*
+    substituteInPlace src/classes/config.js \
+      --replace '/usr/bin/scanimage' '${sane-backends}/bin/scanimage' \
+      --replace '/usr/bin/convert' '${imagemagick}/bin/convert' \
+      --replace '/usr/bin/tesseract' '${tesseract}/bin/tesseract'
+  */
+  settings = {
+    scanimage = "${pkgs.sane-backends}/bin/scanimage";
+    convert = "${pkgs.imagemagick}/bin/convert";
+    tesseract = "${pkgs.tesseract}/bin/tesseract";
+    # it defaults to config/devices.json, but "config" dir doesn't exist and scanservjs doesn't create it
+    devicesPath = "devices.json";
+  } // cfg.settings;
+  settingsFormat = pkgs.formats.json { };
+
+  leafs = attrs:
+    builtins.concatLists
+      (lib.mapAttrsToList
+        (k: v: if builtins.isAttrs v then leafs v else [v])
+        attrs);
+
+  package = pkgs.scanservjs;
+
+  # config.host = '127.0.0.1';
+  # config.port = 8080;
+  # config.devices = [];
+  # config.ocrLanguage = 'eng';
+  # config.log.level = 'DEBUG';
+  # config.scanimage = '/usr/bin/scanimage';
+  # config.convert = '/usr/bin/convert';
+  # config.tesseract = '/usr/bin/tesseract';
+  # config.previewResolution = 100;
+  configFile = pkgs.writeText "config.local.js" ''
+    /* eslint-disable no-unused-vars */
+    module.exports = {
+      afterConfig(config) {
+        ${builtins.concatStringsSep ""
+          (leafs
+            (lib.mapAttrsRecursive (path: val: ''
+              ${builtins.concatStringsSep "." path} = ${builtins.toJSON val};
+            '') { config = settings; }))}
+        ${cfg.extraConfig}
+      },
+
+      afterDevices(devices) {
+        ${cfg.extraDevicesConfig}
+      },
+
+      async afterScan(fileInfo) {
+        ${cfg.runAfterScan}
+      },
+
+      actions: [
+        ${builtins.concatStringsSep ",\n" cfg.extraActions}
+      ],
+    };
+  '';
+
+in {
+  options.services.scanservjs = {
+    enable = lib.mkEnableOption (lib.mdDoc "scanservjs");
+    stateDir = lib.mkOption {
+      type = lib.types.str;
+      default = "/var/lib/scanservjs";
+      description = lib.mdDoc ''
+        State directory for scanservjs
+      '';
+    };
+    settings = lib.mkOption {
+      default = {};
+      description = lib.mdDoc ''
+        Config to set in config.local.js's `afterConfig`
+      '';
+      type = lib.types.submodule {
+        freeformType = settingsFormat.type;
+        options.host = lib.mkOption {
+          type = lib.types.str;
+          description = "The IP to listen on";
+          default = "127.0.0.1";
+        };
+        options.port = lib.mkOption {
+          type = lib.types.port;
+          description = "The port to listen on";
+          default = 8080;
+        };
+      };
+    };
+    extraConfig = lib.mkOption {
+      default = "";
+      type = lib.types.lines;
+      description = lib.mdDoc ''
+        Extra code to add to config.local.js's `afterConfig`
+      '';
+    };
+    extraDevicesConfig = lib.mkOption {
+      default = "";
+      type = lib.types.lines;
+      description = lib.mdDoc ''
+        Extra code to add to config.local.js's `afterDevices`
+      '';
+    };
+    runAfterScan = lib.mkOption {
+      default = "";
+      type = lib.types.lines;
+      description = lib.mdDoc ''
+        Extra code to add to config.local.js's `afterScan`
+      '';
+    };
+    extraActions = lib.mkOption {
+      default = [];
+      type = lib.types.listOf lib.types.lines;
+      description = "Actions to add to config.local.js's `actions`";
+    };
+  };
+  config = lib.mkIf cfg.enable {
+    hardware.sane.enable = true;
+    users.users.scanservjs = {
+      group = "scanservjs";
+      extraGroups = [ "scanner" "lp" ];
+      home = cfg.stateDir;
+      isSystemUser = true;
+      createHome = true;
+    };
+    users.groups.scanservjs = {};
+
+    systemd.services.scanservjs = {
+      description = "scanservjs";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      # yes, those paths are configurable, but the config option isn't always used...
+      path = with pkgs; [ coreutils sane-backends imagemagick tesseract ];
+      environment.NIX_SCANSERVJS_CONFIG_PATH = configFile;
+      environment.SANE_CONFIG_DIR = "/etc/sane-config";
+      environment.LD_LIBRARY_PATH = "/etc/sane-libs";
+      serviceConfig = {
+        ExecStart = "${package}/bin/scanservjs";
+        Restart = "always";
+        User = "scanservjs";
+        Group = "scanservjs";
+        WorkingDirectory = cfg.stateDir;
+      };
+    };
+  };
+}