bikeshedding

system/flake.nix

@@ -51,16 +51,8 @@
       ./modules/vfio.nix
       ./modules/ccache.nix
       ./modules/impermanence.nix
+      ./modules/common.nix
       impermanence.nixosModule 
-      {
-        # make this flake's nixpkgs available to the whole system
-        nix = {
-          generateNixPathFromInputs = true;
-          generateRegistryFromInputs = true;
-          linkInputs = true;
-        };
-        nixpkgs.overlays = [ (self: super: import ./pkgs { pkgs = super; inherit lib; }) ];
-      }
     ];
     hosts = {
       nixmsi = mkHost {

system/hosts/nixmsi.nix

@@ -65,7 +65,6 @@ in {
       # resume_offset = $(btrfs inspect-internal map-swapfile -r path/to/swapfile)
       "resume_offset=533760"
       "fbcon=font:TER16x32"
-      "consoleblank=60"
       # disable PSR to *hopefully* avoid random hangs
       # this one didnt help
       "amdgpu.dcdebugmask=0x10"
@@ -102,25 +101,16 @@ in {
   nixpkgs.config.allowUnfreePredicate = pkg: (lib.getName pkg) == "steam-original";
   hardware = {
     steam-hardware.enable = true;
-    enableRedistributableFirmware = true;
     opengl.driSupport32Bit = true;
     # needed for sway WLR_RENDERER=vulkan
     opengl.extraPackages = with pkgs; [ vulkan-validation-layers ];
   };
 
-  services.openssh = {
+  # services.openssh.enable = true;
-    enable = true;
-    settings.PasswordAuthentication = false;
-  };
 
   services.tlp.enable = true;
-  services.tlp.settings = {
+  # fix for my realtek usb ethernet adapter
-    USB_EXCLUDE_PHONE = 1;
+  services.tlp.settings.USB_DENYLIST = "0bda:8156";
-    START_CHARGE_THRESH_BAT0 = 75;
-    STOP_CHARGE_THRESH_BAT0 = 80;
-    # fix for my realtek usb ethernet adapter
-    USB_DENYLIST = "0bda:8156";
-  };
 
   # see modules/vfio.nix
   vfio.enable = true;
@@ -190,15 +180,6 @@ in {
   };
 
   ### SECTION 2: SYSTEM CONFIG/ENVIRONMENT ###
-  i18n.defaultLocale = lib.mkDefault "en_US.UTF-8";
-  i18n.supportedLocales = lib.mkDefault [
-    "C.UTF-8/UTF-8"
-    "en_US.UTF-8/UTF-8"
-    "en_DK.UTF-8/UTF-8"
-  ];
-  # ISO-8601
-  i18n.extraLocaleSettings.LC_TIME = "en_DK.UTF-8";
-
   console.font = "${pkgs.terminus_font}/share/consolefonts/ter-v32n.psf.gz";
 
   networking.useDHCP = true;
@@ -213,7 +194,6 @@ in {
   networking.firewall.allowedUDPPorts = lib.range 1714 1764;
 
   networking.wireless.iwd.enable = true;
-  #networking.networkmanager.enable = true;
 
   services.ratbagd.enable = true;
 
@@ -239,111 +219,22 @@ in {
   environment.etc."system76-scheduler/exceptions.ron".source =
     "${pkgs.system76-scheduler}/etc/system76-scheduler/exceptions.ron";
 
-  # i wanted to be able to use both x and wayland... but honestly wayland is enough for me
+  common.workstation = true;
-  services.xserver.libinput.enable = true;
+  common.gettyAutologin = true;
-  /*
+  # programs.firejail.enable = true;
-  services.xserver = {
-    enable = true;
-    libinput.enable = true;
-    desktopManager.xterm.enable = false;
-    # I couldn't get lightdm to start sway, so let's just do this
-    displayManager.startx.enable = true;
-    windowManager.i3.enable = true;
-  };
-  */
-
-  programs.sway.enable = true;
-  programs.firejail.enable = true;
   # doesn't work:
   # programs.wireshark.enable = true;
   # users.groups.wireshark.members = [ "user "];
-  environment.systemPackages = with pkgs; [
-    vim
-    wget
-    git
-    man-pages man-pages-posix
-  ];
-  services.dbus.enable = true;
-  # I don't remember whether I really need this...
-  security.polkit.enable = true;
   services.printing.enable = true;
-
+  # from nix-gaming
-  # pipewire:
+  services.pipewire.lowLatency = {
-  security.rtkit.enable = true;
-  services.pipewire = {
     enable = true;
-    alsa.enable = true;
+    # 96 is mostly fine but has some xruns
-    alsa.support32Bit = true;
+    # 128 has xruns every now and then too, but is overall fine
-    pulse.enable = true;
+    quantum = 128;
-    jack.enable = true;
+    rate = 48000;
-    # from nix-gaming
-    lowLatency = {
-      enable = true;
-      # 96 is mostly fine but has some xruns
-      # 128 has xruns every now and then too, but is overall fine
-      quantum = 128;
-      rate = 48000;
-    };
   };
 
-  # environment.pathsToLink = [ "/share/zsh" "/share/fish" ];
-  programs.fish = {
-    enable = true;
-  };
-  /*programs.zsh = {
-    enable = true;
-    enableBashCompletion = true;
-  };*/
-
-  programs.fuse.userAllowOther = true;
-
   programs.ccache.enable = true;
-
-  xdg.portal = {
-    enable = true;
-    extraPortals = with pkgs; [ xdg-desktop-portal-gtk xdg-desktop-portal-wlr ];
-  };
-
-  users.mutableUsers = false;
-  users.users.user = {
-    uid = 1000;
-    isNormalUser = true;
-    extraGroups = [ "networkmanager" "wheel" ];
-    # initialHashedPassword = ...set in private.nix;
-  };
-  # users.users.root.initialHashedPassword = ...set in private.nix;
-  nix = {
-    settings = {
-      allowed-users = [ "user" ];
-      auto-optimise-store = true;
-    };
-    gc = {
-      automatic = true;
-      dates = "weekly";
-      options = "--delete-older-than 30d";
-    };
-    package = pkgs.nixFlakes;
-    extraOptions = ''
-      experimental-features = nix-command flakes
-    '';
-  };
-  systemd.services.nix-daemon.serviceConfig.LimitSTACKSoft = "infinity";
-
-  documentation.dev.enable = true;
-
-  # autologin once after boot
-  # --skip-login means directly call login instead of first asking for username
-  # (normally login asks for username too, but getty prefers to do it by itself for whatever reason)
-  services.getty.extraArgs = [ "--skip-login" ];
-  services.getty.loginProgram = let
-    lockfile = "/tmp/login-once.lock";
-  in with pkgs; writeShellScript "login-once" ''
-    if [ -f '${lockfile}' ]; then
-      exec ${shadow}/bin/login $@
-    else
-      ${coreutils}/bin/touch '${lockfile}'
-      exec ${shadow}/bin/login -f user
-    fi
-  '';
 }
 

system/hosts/nixserver/default.nix

@@ -43,9 +43,6 @@ in {
       availableKernelModules = [ "xhci_pci" "ehci_pci" "ahci" "usb_storage" "sd_mod" "sr_mod" "rtsx_pci_sdmmc" ];
     };
     kernelModules = [ "kvm-intel" ];
-    kernelParams = [
-      "consoleblank=60"
-    ];
     loader = {
       grub = {
         enable = true;
@@ -59,7 +56,6 @@ in {
       efi.efiSysMountPoint = "/boot/efi";
     };
   };
-  hardware.enableRedistributableFirmware = true;
   fileSystems = {
     "/" =    { device = "none"; fsType = "tmpfs"; neededForBoot = true;
                options = [ "defaults" "size=2G" "mode=755" ]; };
@@ -95,14 +91,6 @@ in {
       extraOptions = [ "--loadavg-target" "8.0" ];
     };
   };
-  i18n.defaultLocale = lib.mkDefault "en_US.UTF-8";
-  i18n.supportedLocales = lib.mkDefault [
-    "C.UTF-8/UTF-8"
-    "en_US.UTF-8/UTF-8"
-    "en_DK.UTF-8/UTF-8"
-  ];
-  # ISO-8601
-  i18n.extraLocaleSettings.LC_TIME = "en_DK.UTF-8";
   console.font = "${pkgs.terminus_font}/share/consolefonts/ter-v24n.psf.gz";
   networking.useDHCP = true;
   networking.resolvconf.extraConfig = ''
@@ -178,55 +166,30 @@ in {
     startWhenNeeded = false;
   };
 
-  programs.fish.enable = true;
+  users.users.user.extraGroups = [ config.services.unbound.group ];
-  users.defaultUserShell = pkgs.fish;
-  users.users.user = {
-    isNormalUser = true;
-    extraGroups = [ "wheel" config.services.unbound.group ];
-  };
-
-  environment.systemPackages = with pkgs; [
-    comma
-    git
-    vim
-    wget
-    # rxvt-unicode-unwrapped.terminfo
-    kitty.terminfo
-    tmux
-  ];
 
   services.postgresql.enable = true;
   services.postgresql.package = pkgs.postgresql_13;
 
-  nix = {
-    settings = {
-      allowed-users = [ "user" ];
-      auto-optimise-store = true;
-    };
-    gc = {
-      automatic = true;
-      dates = "weekly";
-      options = "--delete-older-than 30d";
-    };
-    package = pkgs.nixFlakes;
-    extraOptions = ''
-      experimental-features = nix-command flakes
-    '';
-  };
-  systemd.services.nix-daemon.serviceConfig.LimitSTACKSoft = "infinity";
-
   # SSH
   services.openssh = {
     enable = true;
-    # settings.PermitRootLogin = "no";
+    # settings.PermitRootLogin = false;
-    settings.PasswordAuthentication = false;
+    /*listenAddresses = [{
-    listenAddresses = [{
       addr = "0.0.0.0";
     } {
       addr = "::";
-    }];
+    }];*/
+  };
+  services.fail2ban = {
+    enable = true;
+    ignoreIP = lib.optionals (cfg.lanCidrV4 != "0.0.0.0/0") [ cfg.lanCidrV4 ]
+                ++ (lib.optionals (cfg.lanCidrV6 != "::/0") [ cfg.lanCidrV6 ]);
+    jails.dovecot = ''
+      enabled = true
+      filter = dovecot
+    '';
   };
-  services.fail2ban.enable = true;
 
   # SEARXNG
   services.searx.enable = true;
@@ -242,14 +205,13 @@ in {
   services.searx.uwsgiConfig = let inherit (config.services.searx) settings; in {
     socket = "${lib.quotePotentialIpV6 settings.server.bind_address}:${toString settings.server.port}";
   };
-  users.groups.searx.members = [ "nginx" ];
+  services.searx.environmentFile = /var/lib/searx/searx.env;
-  services.searx.environmentFile = "/etc/nixos/private/searx.env";
   services.searx.settings = {
     use_default_settings = true;
     search = {
-        safe_search = 0; # Filter results. 0: None, 1: Moderate, 2: Strict
+        safe_search = 0;
-        autocomplete = "duckduckgo"; # Existing autocomplete backends: "dbpedia", "duckduckgo", "google", "startpage", "swisscows", "qwant", "wikipedia" - leave blank to turn it off by default
+        autocomplete = "duckduckgo"; # dbpedia, duckduckgo, google, startpage, swisscows, qwant, wikipedia - leave blank to turn off
-        default_lang = ""; # Default search language - leave blank to detect from browser information or use codes from 'languages.py'
+        default_lang = ""; # leave blank to detect from browser info or use codes from languages.py
     };
 
     server = {
@@ -273,10 +235,6 @@ in {
       pool_maxsize = 10;           # Number of allowable keep-alive connections, or null
       enable_http2 = true;         # See https://www.python-httpx.org/http2/
     };
-    /* = {
-      name = "soundcloud";
-      disabled = true;
-    };*/
   };
   services.nginx.virtualHosts."search.${cfg.domainName}" = let inherit (config.services.searx) settings; in {
     enableACME = true;
@@ -292,9 +250,7 @@ in {
   services.nginx.enable = true;
   services.nginx.streamConfig =
     let
-      cert = config.security.acme.certs."${cfg.domainName}".directory + "/fullchain.pem";
+      inherit (config.security.acme.certs."${cfg.domainName}") directory;
-      certKey = config.security.acme.certs."${cfg.domainName}".directory + "/key.pem";
-      trustedCert = config.security.acme.certs."${cfg.domainName}".directory + "/chain.pem";
     in ''
       upstream dns {
         zone dns 64k;
@@ -302,9 +258,9 @@ in {
       }
       server {
         listen 853 ssl;
-        ssl_certificate ${cert};
+        ssl_certificate ${directory}/fullchain.pem;
-        ssl_certificate_key ${certKey};
+        ssl_certificate_key ${directory}/key.pem;
-        ssl_trusted_certificate ${trustedCert};
+        ssl_trusted_certificate ${directory}/chain.pem;
         proxy_pass dns;
       }
     '';
@@ -372,7 +328,8 @@ in {
     sendOnly = true;
   };
   services.dovecot2.extraConfig =
-    let passwd = builtins.toFile "dovecot2-local-passwd" ''
+    let
+      passwd = builtins.toFile "dovecot2-local-passwd" ''
         noreply@${cfg.domainName}:{plain}${cfg.unhashedNoreplyPassword}::::::allow_nets=local,127.0.0.0/8,::1
       '';
     in ''

system/modules/common.nix

@@ -0,0 +1,138 @@
+{ lib
+, pkgs
+, config
+, ... }:
+
+{
+  options.common = with lib; mkOption {
+    type = types.submodule {
+      options = {
+        workstation = mkOption {
+          type = types.bool;
+          default = false;
+          description = "whether this device is a workstation (meaning a device for personal use rather than a server)";
+        };
+        mainUsername = mkOption {
+          type = types.str;
+          default = "user";
+          description = "main user's username";
+        };
+        gettyAutologin = mkOption {
+          type = types.bool;
+          default = false;
+          description = "make getty autologin to the main user";
+        };
+      };
+    };
+    default = { };
+  };
+  config = let
+    cfg = config.common;
+  in {
+    nix = {
+      settings = {
+        allowed-users = [ cfg.mainUsername ];
+        auto-optimise-store = true;
+      };
+      gc = {
+        automatic = true;
+        dates = "weekly";
+        options = "--delete-older-than 30d";
+      };
+      package = pkgs.nixFlakes;
+      extraOptions = ''
+        experimental-features = nix-command flakes
+      '';
+      # from flake-utils-plus: make this flake's nixpkgs available to the whole system
+      generateNixPathFromInputs = true;
+      generateRegistryFromInputs = true;
+      linkInputs = true;
+    };
+    systemd.services.nix-daemon.serviceConfig.LimitSTACKSoft = "infinity";
+    boot.kernelParams = [
+      "consoleblank=60"
+    ];
+
+    nixpkgs.overlays = [ (self: super: import ../pkgs { pkgs = super; inherit lib; }) ];
+    hardware.enableRedistributableFirmware = true;
+    services.openssh.settings.PasswordAuthentication = false;
+    services.tlp.settings.USB_EXCLUDE_PHONE = 1;
+    services.tlp.settings.START_CHARGE_THRESH_BAT0 = 75;
+    services.tlp.settings.STOP_CHARGE_THRESH_BAT0 = 80;
+    i18n.defaultLocale = lib.mkDefault "en_US.UTF-8";
+    i18n.supportedLocales = lib.mkDefault [
+      "C.UTF-8/UTF-8"
+      "en_US.UTF-8/UTF-8"
+      "en_DK.UTF-8/UTF-8"
+    ];
+    # ISO-8601
+    i18n.extraLocaleSettings.LC_TIME = "en_DK.UTF-8";
+    environment.systemPackages = with pkgs; ([
+      wget
+      git
+    ] ++ (if cfg.workstation then [
+      comma
+      neovim
+      man-pages man-pages-posix
+    ] else [
+      kitty.terminfo
+      # rxvt-unicode-unwrapped.terminfo
+      vim
+      tmux
+    ]));
+    documentation.dev.enable = lib.mkIf cfg.workstation true;
+    programs.fish.enable = true;
+    /*programs.zsh = {
+      enable = true;
+      enableBashCompletion = true;
+    };*/
+    users.defaultUserShell = lib.mkIf (!cfg.workstation) pkgs.fish;
+    users.users.${cfg.mainUsername} = {
+      uid = 1000;
+      isNormalUser = true;
+      extraGroups = [ "wheel" ];
+    };
+    services.xserver.libinput.enable = lib.mkIf cfg.workstation true;
+    /*
+    services.xserver = {
+      enable = true;
+      libinput.enable = true;
+      desktopManager.xterm.enable = false;
+      # I couldn't get lightdm to start sway, so let's just do this
+      displayManager.startx.enable = true;
+      windowManager.i3.enable = true;
+    };
+    */
+    programs.sway.enable = lib.mkIf cfg.workstation true;
+    services.dbus.enable = lib.mkIf cfg.workstation true;
+    security.polkit.enable = lib.mkIf cfg.workstation true;
+    # pipewire:
+    security.rtkit.enable = lib.mkIf cfg.workstation true;
+    services.pipewire = lib.mkIf cfg.workstation {
+      enable = true;
+      alsa.enable = true;
+      alsa.support32Bit = true;
+      pulse.enable = true;
+      jack.enable = true;
+    };
+    programs.fuse.userAllowOther = true;
+    xdg.portal = lib.mkIf cfg.workstation {
+      enable = true;
+      extraPortals = with pkgs; [ xdg-desktop-portal-gtk xdg-desktop-portal-wlr ];
+    };
+    # autologin once after boot
+    # --skip-login means directly call login instead of first asking for username
+    # (normally login asks for username too, but getty prefers to do it by itself for whatever reason)
+    services.getty.extraArgs = lib.mkIf cfg.gettyAutologin [ "--skip-login" ];
+    services.getty.loginProgram = lib.mkIf cfg.gettyAutologin (let
+      lockfile = "/tmp/login-once.lock";
+    in with pkgs; writeShellScript "login-once" ''
+      if [ -f '${lockfile}' ]; then
+        exec ${shadow}/bin/login $@
+      else
+        ${coreutils}/bin/touch '${lockfile}'
+        exec ${shadow}/bin/login -f user
+      fi
+    '');
+  };
+}

system/modules/impermanence.nix

@@ -36,6 +36,7 @@ in {
     default = { };
   };
   config = lib.mkIf cfg.enable {
+    users.mutableUsers = false;
     # why is this not part of base NixOS?
     systemd.tmpfiles.rules = [ "d /var/lib/systemd/pstore 0755 root root 14d" ];
     # as weird as it sounds, I won't use tmpfs for /tmp in case I'll have to put files over 2GB there
@@ -100,6 +101,8 @@ in {
         { directory = /var/lib/postgresql; user = "postgres"; group = "postgres"; mode = "0755"; }
       ]) ++ (lib.optionals config.services.unbound.enable [
         { directory = /var/lib/unbound; user = "unbound"; group = "unbound"; mode = "0755"; }
+      ]) ++ (lib.optionals config.services.searx.enable [
+        { directory = /var/lib/searx; user = "searx"; group = "searx"; mode = "0700"; }
       ]) ++ (lib.optionals config.services.roundcube.enable [
         { directory = /var/lib/roundcube; user = "roundcube"; group = "roundcube"; mode = "0700"; }
       ]) ++ (lib.optionals config.services.rspamd.enable [