diff --git a/configuration.nix b/configuration.nix
index 0b866df..48b1daa 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -51,6 +51,14 @@ in {
         owner = config.users.users.knazarov.name;
         group = config.users.users.knazarov.group;
       };
+      syncthing_key = {
+        owner = config.users.users.knazarov.name;
+        group = config.users.users.knazarov.group;
+      };
+      syncthing_cert = {
+        owner = config.users.users.knazarov.name;
+        group = config.users.users.knazarov.group;
+      };
       mullvad_account = { };
     };
   };
@@ -194,8 +202,19 @@ in {
     clang-tools
     #  wget
     my_python
+
+    # latex basics
+    (pkgs.texlive.combine {
+      inherit (pkgs.texlive) scheme-basic
+        dvisvgm dvipng beamer metafont
+        wrapfig amsmath ulem hyperref capt-of;
+    })
+
+    nodejs
   ];
 
+  services.tailscale.enable = true;
+
   services.mullvad-vpn = { enable = true; };
   systemd.services."mullvad-daemon".postStart =
     let mullvad = config.services.mullvad-vpn.package;
@@ -203,7 +222,7 @@ in {
       while ! ${mullvad}/bin/mullvad status >/dev/null; do sleep 1; done
       ${mullvad}/bin/mullvad account login `cat /var/run/secrets/mullvad_account`
       ${mullvad}/bin/mullvad auto-connect set on
-      ${mullvad}/bin/mullvad tunnel ipv6 set on
+      ${mullvad}/bin/mullvad tunnel set ipv6 on
     '';
 
   services.fwupd.enable = true;
@@ -404,6 +423,14 @@ in {
     font-awesome # for waybar indicators
   ];
 
+  services.syncthing = {
+    enable = true;
+    user = "knazarov";
+    configDir = "/home/knazarov/.config/syncthing";
+    key = config.sops.secrets.syncthing_key.path;
+    cert = config.sops.secrets.syncthing_cert.path;
+  };
+
   home-manager.users.knazarov = {
     # The home.stateVersion option does not have a default and must be set
     home.stateVersion = "24.11";
@@ -481,6 +508,14 @@ in {
           source = ./pgp_keys/FB4809DC51A4F483.asc;
           trust = "ultimate";
         }
+        {
+          source = ./pgp_keys/60B2FF168764BED2D4ADE1BF7DE090DD4DB68232.asc;
+          trust = "ultimate";
+        }
+        {
+          source = ./pgp_keys/8311DCF21B41308C743FBFEA44B0C3FE7CD9EAE3.asc;
+          trust = "ultimate";
+        }
       ];
       settings = { default-key = "0x0560020C9C577C1B"; };
       mutableKeys = false;
@@ -624,7 +659,7 @@ in {
         for_window [title="mylauncher"] floating enable
         for_window [title="Firefox.*Sharing Indicator"] floating enable;
         default_border pixel 3
-        input 1386:885:Wacom_Intuos_M_Pen map_to_output HDMI-A-1
+        input 1386:885:Wacom_Intuos_M_Pen map_to_output DP-1
       '';
     };
     programs.foot = {
@@ -690,7 +725,7 @@ in {
         };
       }];
     };
-    services.syncthing = { enable = true; };
+    #services.syncthing = { enable = true; };
     home.pointerCursor = {
       name = "Adwaita";
       package = pkgs.adwaita-icon-theme;
diff --git a/emacs.el b/emacs.el
index c8eb415..1fb4567 100755
--- a/emacs.el
+++ b/emacs.el
@@ -571,6 +571,8 @@ Intended for `after-make-frame-functions'."
   ;; Enable line wrap by default in org buffers
   (setq org-startup-truncated nil)
 
+  ;; Use svg export for latex fragments
+  (setq org-latex-create-formula-image-program 'dvisvgm)
 
   ;; Sometimes I sit at night until 4 AM, and I still want org to treat it
   ;; as "today"
diff --git a/flake.lock b/flake.lock
index a250e98..5f58de6 100755
--- a/flake.lock
+++ b/flake.lock
@@ -89,11 +89,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1726434400,
-        "narHash": "sha256-O8yvDKXV9rjDqymXedpR1scwu0+aHm6tTjK6Zze42QU=",
+        "lastModified": 1729114222,
+        "narHash": "sha256-IHqI95x/s3xFyj9Uo/pnblU+9yw9hEvYJ77EEYuhXQI=",
         "owner": "~knazarov",
         "repo": "knazarov.com",
-        "rev": "43b0f83d7a6b858ff45bcbf10cc2acb185bfa99a",
+        "rev": "affe3605609e6f0ab00b55a8901362ca44307c37",
         "type": "sourcehut"
       },
       "original": {
@@ -232,11 +232,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1686509156,
-        "narHash": "sha256-zV1DbAvNlfGznLdpCoqSNNXtAHFjzYaO9vY76BV+CnQ=",
+        "lastModified": 1730144506,
+        "narHash": "sha256-JBeGqX4mghYAOR2GGm2oYwauoRNGQbxuQyYA9p6oZvM=",
         "owner": "valeriya-matveeva",
         "repo": "vmatveeva.com",
-        "rev": "4a5799dfa115f05bd09ced89bd962a35a9018978",
+        "rev": "21a1cbfce6fe91e5f33649b4e0c9352933cb60db",
         "type": "github"
       },
       "original": {
diff --git a/nil_cli.nix b/nil_cli.nix
index af0af25..deaae81 100644
--- a/nil_cli.nix
+++ b/nil_cli.nix
@@ -5,8 +5,8 @@ stdenv.mkDerivation rec {
   version = "2024.08.12";
 
   src = fetchzip {
-    url = "https://github.com/NilFoundation/nil_cli/releases/download/2024.08.12/nil-linux-x64.zip";
-    sha256 = "sha256-URsmWhHGuSEK/Ug/wPT6GmzVwNyvTSl9BkOgn5ybEJU=";
+    url = "https://github.com/NilFoundation/nil_cli/releases/download/2024.10.15/nil-linux-x64.zip";
+    sha256 = "sha256-KAPvRDo++q2g6vWPOrJcksVyBjEoNznjQlKGweD6rVg=";
   };
 
   phases = ["installPhase" "patchPhase"];
diff --git a/nodes/knazarovcom/configuration.nix b/nodes/knazarovcom/configuration.nix
index cb36c84..f944d80 100644
--- a/nodes/knazarovcom/configuration.nix
+++ b/nodes/knazarovcom/configuration.nix
@@ -122,6 +122,24 @@
         locations."/" = { proxyPass = "http://127.0.0.1:3000"; };
       };
       "turn.knazarov.com" = { enableACME = true; };
+      "headscale.knazarov.com" = {
+        enableACME = true;
+        forceSSL = true;
+        locations."/" = {
+          proxyPass = "http://127.0.0.1:8080";
+          extraConfig = ''
+            proxy_http_version 1.1;
+            proxy_set_header Upgrade $http_upgrade;
+            proxy_set_header Connection $connection_upgrade;
+            proxy_set_header Host $server_name;
+            proxy_buffering off;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+            add_header Strict-Transport-Security "max-age=15552000; includeSubDomains" always;
+          '';
+        };
+      };
     };
   };
   security.acme.acceptTerms = true;
@@ -137,6 +155,7 @@
       postRun = "systemctl restart coturn.service";
       group = "turnserver";
     };
+    "headscale.knazarov.com".email = "mail@knazarov.com";
   };
 
   services.forgejo = {
@@ -203,6 +222,15 @@
     '';
   };
 
+  services.headscale = {
+    enable = true;
+
+    settings = {
+      server_url = "https://headscale.knazarov.com:443";
+
+    };
+  };
+
   sops.defaultSopsFile = ./secrets.yaml;
   sops.secrets = {
     example_key = { };
diff --git a/pgp_keys/60B2FF168764BED2D4ADE1BF7DE090DD4DB68232.asc b/pgp_keys/60B2FF168764BED2D4ADE1BF7DE090DD4DB68232.asc
index 9bef921..68d5bf5 100644
--- a/pgp_keys/60B2FF168764BED2D4ADE1BF7DE090DD4DB68232.asc
+++ b/pgp_keys/60B2FF168764BED2D4ADE1BF7DE090DD4DB68232.asc
@@ -1,5 +1,6 @@
 -----BEGIN PGP PUBLIC KEY BLOCK-----
 Comment: 60B2 FF16 8764 BED2 D4AD  E1BF 7DE0 90DD 4DB6 8232
+Comment: Oleg Babin <babinoleg@mail.ru>
 
 xsFNBGTHr/MBEACnRVXaH/CuMDlzBEIU0dJMrbosmJQDn2hW9t07GSKTOxWv7vBX
 cSOxTTw7XgHl/4PR17W7qoLcbUzRLnVFrUu2KpcmKkxqBXCkzMwPVAi9gCgDuM7j
@@ -12,51 +13,64 @@ CxBSuh7Vie9pio30RQqAZeGqsknMcQ9rr2K5EKNzxv9QMi89iQBdv8XT14nKU891
 z6lmvj0k5RSwlQWLDQyVD7xlUTQyhj4phVR+VB0lDWdwxcmBE6stOkr4dNiomBj8
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-zsFNBGTHr/MBEADZMHRHt9LBRYp9YKbpSsyv5agy7rp4Kad++kXmRyO2yusm+V8k
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 -----END PGP PUBLIC KEY BLOCK-----
diff --git a/pgp_keys/8311DCF21B41308C743FBFEA44B0C3FE7CD9EAE3.asc b/pgp_keys/8311DCF21B41308C743FBFEA44B0C3FE7CD9EAE3.asc
new file mode 100644
index 0000000..134a680
--- /dev/null
+++ b/pgp_keys/8311DCF21B41308C743FBFEA44B0C3FE7CD9EAE3.asc
@@ -0,0 +1,76 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Comment: 8311 DCF2 1B41 308C 743F  BFEA 44B0 C3FE 7CD9 EAE3
+Comment: Vladimir Ivanov <vl.ivanov@nil.foundation>
+
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+=5sfj
+-----END PGP PUBLIC KEY BLOCK-----
diff --git a/secrets.yaml b/secrets.yaml
index d813467..ad7138a 100644
--- a/secrets.yaml
+++ b/secrets.yaml
@@ -1,9 +1,11 @@
 hello: ENC[AES256_GCM,data:+LPt8J+Ks1m10+zZ2Q96r3K2W6Yeng7M7+c2TYDQ+/4AJl6Xc6hVnU8PKk28RA==,iv:v3B/CcFFA7kuuPcYDa5qha0ZrtskW5p443Zm8kM7xqA=,tag:r8Y9uf1dmp+VfJOHFG75PQ==,type:str]
 fastmail_password: ENC[AES256_GCM,data:tHr8PqIg9DigRBu2bgjUeg==,iv:NI9bENFPuKcOt1cd2kg2DKU22J1dJ+3mK7UoceZagR4=,tag:oEgeQb1iLKisOqHi9Ds7xg==,type:str]
-github_token: ENC[AES256_GCM,data:ET4zFSe1dyFum/HMlzT/0bEP/Kzr3vdp16eKZb63hBYcz0+bKmJ/NZGk4KyojPKgRfgHR3XrrJbVdFdP2QTjfX3XtVq6N7RoU4wOwjrdOgm+4JCKRqO6pWa5ieX0m1DB5NuU7hN6X6Yqwcu38dpGzBUinpcyQDmMHSby6epL,iv:IoFHQ6sC9ZxvOIckkoF5Wnn4+VvCHapwNduCBlELzrU=,tag:gfF24P2JUWUhEIxt3Np3MQ==,type:str]
+github_token: ENC[AES256_GCM,data:efFL5w0dAqHM0L35bfr4PMF/0Uys3Pe9s/pqDJUA0rBdRSwlsSHm0JIj/Jko/vOY5TcI2jmrqK5uE2CCLy7Ur5IzF0EWB8+vFdw71tXXNQjiHBpx+lstVNn6UQmi4qF3aLCyy/c1kl/K68O49XGnKeHCX0Qd0ftTjyiR+BCC,iv:MQ5ryAIkU0KFmVvHgV7LP1lefY+2ai7usTSQ4w6RyD0=,tag:gI4O0u8IBKQxg5wUhOOYBg==,type:str]
 mullvad_account: ENC[AES256_GCM,data:CO4wl2vNAMEC9oy37nIrpw==,iv:a3w64u8XQ/tihIDxIPPtdZ6F7dldLPvRzGUs1MpVe4M=,tag:HQxJVuGEvI0fVj8yGptbdA==,type:str]
 git_plan_config: ENC[AES256_GCM,data:7K4R9OcFq+hWPKwkng6huppcInASpjUSgRpYX++voPHXJ6lMv2/JydPuQsxUPZMVBmn2o7DgTRzKzaXzwa5DV+92bvsS9LL/oL/qeoTqdci4lCRyushntgfwdZttMeVjbxybyutqO/daoEpT0Er2lTVgzyrGR7bU6RUyhVjl6VI2phgrMkzHfmIx5/FOma3q26WzGQtl1b7m2ptKYxrwWrYWqZqy80ITOYFbRQF2CQHUj/rfQrl5nv5AWUafDWglfFBlX4T+WiPsHPcAg0Fnt6gjbcirDLPMFTrqsI5T0BVqRJW1qDzAavFHJn2SZPgfZGgonzAil/RS+z/4xsSJ1G4EO7KCCeS24lU9VoWzHlBRL/+4jnQoL8S5qsOyILiFLSckRp0WCcJ54nSf88CuBKRGgabBzKX7PPut1Q/QvWN60KrhIiN0vFlK9M9gLKDwzXo366HN9rrjMNKWtKFqcwuP+oh5MgfpP3tru7ExGp83RPAx0Ol2pnaRs8TxWRMEcwgDkIQODrmPM/EBNr1vQNST7mMVuN1vl9I7fCzVhqp+0Hxlzf9lb1zkCscjlX0Kc4zVvjPxl2cw7e1/nOSrMBV9Ex4c2CAi31LHF39n8krIk2p9IR/hwZWNEErX68rAD8aSaU5ozgMChKgblXiaBb2zk7BPYr/vHYkM64VD8NGd5BbNseLz8SiEL8SBdD2ZsKf5eCYEghI2qMyYhuDdbrcpfBv9xUapwQxG58hZSw==,iv:XD03VsphTGx2f+bXTWQy1sgY1k5TFs4H2XFj/KyTBe4=,tag:1LlsaX/SLv3QdqJ6mt96mA==,type:str]
 git_plan_credentials: ENC[AES256_GCM,data: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,iv:ZzOUYu3s+kfwbKajA+6fdu2EysipjoKD49muLNFBZ58=,tag:e0RI7rA8eLQI8h5L4pvS1A==,type:str]
+syncthing_cert: ENC[AES256_GCM,data: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,iv:13xEhm9JVOVh6rBZtItcEQd62FMIlFKo80JmxQtyIi4=,tag:zuGER4fW2Gy1edzsBPMWIQ==,type:str]
+syncthing_key: ENC[AES256_GCM,data:2oLPKt3X867NqP79YZgvMglAQ3K9reTyeDIgQT3deHmg+RzawWh8fk8NidU5y9ailSGfdddB2r5WkgfH1fhHOBXCHpot5fR3+4TfSTMSX3V05E6GZNn51ue4Defjc3SQmCZBUKegtusJ5QBxqDBTuzWjb+QtlO0ZUzC7ZwV4GGXDP6fvPaoUfOzkX3vV5iowo43SM5gnask/KcgNN0EDprsRQ5vRTRA+vs5miwxrdCnU5O3RuJXrtTfiX61qQ1ei0Iw05lXTXFJQuJ4Cijvag00SZymWZIvSBq/DcSswcW+3Tme9CuScJ1KNA3vRYLatAln5buSg/htRb0haQUJNQPAbAL6tnJSvXLF3VaEm1Ja+njfeVJJlbBEzOYDdfgim,iv:+5BWkeWwVNgHB5BXItu69+HoFac8q67yz1oct7u4Hoo=,tag:hCGaQTG70sYoQnoVW2s5vw==,type:str]
 sops:
     kms: []
     gcp_kms: []
@@ -28,8 +30,8 @@ sops:
             U3loV2xDMkM5SWNXRDJobDloL0FVUUkK3OP7KvcKkE8mJ880dm6LMFZUxELjl8/P
             6+q8qAYiAvl0Cbd4GzkNpUuBbLlFFWfFmC0vbgg8gyZ6xI5AFhHAPw==
             -----END AGE ENCRYPTED FILE-----
-    lastmodified: "2024-06-19T10:27:45Z"
-    mac: ENC[AES256_GCM,data:1JMqj5fTZ+SKbOzbdYYTVe9pqdqMLKdxkHjLha/DcgAaI7PMGweMtXZtTXfXkl3Rb/DvFkvyZmDYP0xtJ3ReplSQ+M48ZeEoo/zexFw1y7dZZcjoZjtVW33UlfO0uD1OuFbVJDTx7vln5xtSkauTEkKuRqiDTmLtcKFK19nLTmE=,iv:RrI97b5gndyp/8yxVYvRddsYMdIwgm97LxSvEQAKgo8=,tag:Ovyu8hT585kAl0QxvVXBtQ==,type:str]
+    lastmodified: "2024-10-28T19:44:41Z"
+    mac: ENC[AES256_GCM,data:MNWWFLzCLQcEqKOtMftSA8FFCMfQuJz9DivoIFoYtbv0OYX+8RtVJPcrY3JaUZCRlQJBc4ll7zDgFxoueOr9ZglZrJ6yIXp5VjgCEEQ6IfTXEfAjw3ucQtu0EOgeZgHT9ACW11rSFYY/HFNABVRU8jHyBP1rX8Lwkgn75CvwSwc=,iv:qcExp4vFit3cN5VdApy2KXB4guXYXDYfXggEb9Nb/RU=,tag:5mWFJzr6MT3I87w3lNm1HQ==,type:str]
     pgp:
         - created_at: "2023-06-10T01:03:11Z"
           enc: |-
@@ -52,4 +54,4 @@ sops:
             -----END PGP MESSAGE-----
           fp: DDB4423999505236CF585F9B0560020C9C577C1B
     unencrypted_suffix: _unencrypted
-    version: 3.8.1
+    version: 3.9.0