Various changes

- `hs` host
  - cam subdomain behind reverse proxy
  - dynamic dns updater script
- `pc` host
  - ext4 instead of btrfs
  - ca-derivations experimental feature
- nix from unstable channel (2.8)
- cura from stable (unstable went broken)
- Emacs
  - company-nixos-options
  - helm-nixos-options
  - nix-modeline
  - disable format hook on save for nix mode
- nix from master (only in overlay, not used)
- bat (alias for cat)
- batman (alias for batman)
- disabled weird extra options for nix I couldn't even remember of
- Fira Code for sway/waybar
- New plain style for waybar

hosts/hs/configuration.nix

@@ -210,9 +210,7 @@
                                  'rt=$request_time uct="$upstream_connect_time" uht="$upstream_header_time" urt="$upstream_response_time"';
       '';
       virtualHosts = {
-
         "torrent.ccr.ydns.eu" = {
-
           enableACME = true;
           forceSSL = true;
           locations."/" = {
@@ -252,10 +250,55 @@
             proxyPass = "http://192.168.1.71:80";
           };
         };
+
+        "cam.ccr.ydns.eu" = {
+          enableACME = true;
+          addSSL = true;
+          locations."/" = {
+            proxyPass = "http://192.168.1.80:80";
+          };
+        };
       };
     };
   };
 
+
+  systemd.services.ydns =
+    let
+      ydnsUpdater = pkgs.writeScriptBin "ydnsUpdater" ''
+        #!${pkgs.stdenv.shell}
+        USER="andrea.ciceri@autistici.org"
+        PASSWORD=$(${pkgs.stdenv}/bin/cat /home/ccr/.ydns-password)
+        DOMAIN="ccr.ydns.eu"
+
+        for SUBDOMAIN in "books" "music" "sync" "torrent" "gate" "cam"
+        do
+            HOST="$SUBDOMAIN.$DOMAIN"
+            ${pkgs.curl}/bin/curl --basic -u "$USER:$PASSWORD" --silent https://ydns.io/api/v1/update/?host=$HOST
+        done
+        ${pkgs.curl}/bin/curl --basic -u "$USER:$PASSWORD" --silent https://ydns.io/api/v1/update/?host=$DOMAIN
+      '';
+    in
+    {
+      description = "YDNS IP updater";
+      wantedBy = [ "multi-user.target" ];
+      after = [ "network.target" ];
+      serviceConfig = {
+        User = "ccr";
+        Type = "oneshot";
+        ExecStart = "${ydnsUpdater}/bin/ydnsUpdater";
+      };
+    };
+
+  systemd.timers.ydnsUpdater = {
+    wantedBy = [ "timers.target" ];
+    partOf = [ "ydnsUpdater.service" ];
+    timerConfig = {
+      OnCalendar = "*-*-* *:00:00"; # hourly
+      Unit = "ydnsUpdater.service";
+    };
+  };
+
   networking.firewall = {
     enable = true;
     allowPing = true;

hosts/pc/configuration.nix

@@ -38,7 +38,13 @@
   fileSystems."/" =
     {
       device = "/dev/disk/by-label/nixos";
-      fsType = "btrfs";
+      fsType = "ext4";
+    };
+  
+  fileSystems."/home" =
+    {
+      device = "/dev/disk/by-label/home";
+      fsType = "ext4";
     };
 
   swapDevices =
@@ -49,15 +55,16 @@
       automatic = true;
       options = "--delete-older-than 3d";
     };
+    # package = pkgs.nixFromMaster;
+    package = pkgs.nix; # currently from unstable through an overlay
+    extraOptions = ''
+      experimental-features = ca-derivations 
+    '';
   };
 
-
   networking.firewall = {
     enable = true;
     allowPing = true;
-    allowedTCPPorts = [
-      5900 # vnc
-    ];
   };
 
   # TODO: disable, only for playing