chore(ssh): rotate 'andromache' to hardware-backed ssh key

deploy/colmena.nix

@@ -13,7 +13,7 @@ let
     deployment = {
       targetHost = self.nixosConfigurations.${hostname}.config.ssh.publicHostname;
       targetUser = self.nixosConfigurations.${hostname}.config.ssh.username;
-      buildOnTarget = builtins.any (t: t != "local") tags;
+      buildOnTarget = builtins.any (t: t != "local" && t != "arm") tags;
       inherit tags;
     };
   };
@@ -22,7 +22,8 @@ let
     hostname: mkNode hostname (utils.hostMeta ../hosts/${hostname}).deployment.tags
   );
 in
-inputs.colmena.lib.makeHive {
+inputs.colmena.lib.makeHive (
+  {
     meta = {
       nixpkgs = import inputs.nixpkgs {
         localSystem = "x86_64-linux";
@@ -31,6 +32,6 @@ inputs.colmena.lib.makeHive {
       nodeNixpkgs = builtins.mapAttrs (_: v: v.pkgs) self.nixosConfigurations;
       nodeSpecialArgs = builtins.mapAttrs (_: v: v._module.specialArgs or { }) self.nixosConfigurations;
     };
-
-  inherit nodes;
-}
+  }
+  // nodes
+)

dots/.bin/git-cb

@@ -1,221 +0,0 @@
-#!/usr/bin/env bash
-set -euo pipefail
-
-readonly ALLOWED_MAIN_BRANCHES=("main" "master" "develop")
-readonly BRANCH_TYPES=(
-  "feat      For new features"
-  "hotfix    For urgent fixes"
-  "fix       For fixes"
-  "release   For preparing releases"
-  "chore     For non-code tasks"
-)
-
-error() {
-  echo "Error: $1" >&2
-  exit 1
-}
-
-warn() {
-  echo "Warning: $1" >&2
-}
-
-check_dependencies() {
-  local missing=()
-  for cmd in git fzf; do
-    if ! command -v "$cmd" &> /dev/null; then
-      missing+=("$cmd")
-    fi
-  done
-
-  if [[ ${#missing[@]} -gt 0 ]]; then
-    error "Missing required commands: ${missing[*]}"
-  fi
-}
-
-check_git_repo() {
-  if ! git rev-parse --git-dir &> /dev/null; then
-    error "Not in a git repository"
-  fi
-}
-
-check_current_branch() {
-  local current_branch
-  current_branch=$(git branch --show-current)
-
-  local is_main_branch=false
-  for branch in "${ALLOWED_MAIN_BRANCHES[@]}"; do
-    if [[ "$current_branch" == "$branch" ]]; then
-      is_main_branch=true
-      break
-    fi
-  done
-
-  if [[ "$is_main_branch" == false ]]; then
-    warn "Not branching from a main branch (current: $current_branch)"
-    read -rp "Continue anyway? [y/N] " response
-    if [[ ! "$response" =~ ^[Yy]$ ]]; then
-      exit 0
-    fi
-  fi
-}
-
-get_user_email() {
-  local email
-  email=$(git config --get user.email 2>/dev/null)
-
-  if [[ -z "$email" ]]; then
-    error "Git user email not configured. Run: git config user.email 'your@email.com'"
-  fi
-
-  echo "$email"
-}
-
-select_branch_type() {
-  local selected
-  selected=$(printf '%s\n' "${BRANCH_TYPES[@]}" | \
-    fzf --prompt="Select branch type: " \
-        --height=40% \
-        --border \
-        --info=inline) || error "Branch type selection cancelled"
-
-  echo "${selected%% *}"
-}
-
-select_jira_ticket() {
-  local email=$1
-
-  if ! command -v jira &> /dev/null; then
-    warn "Jira CLI not found. Proceeding without ticket ID."
-    return 0
-  fi
-
-  echo "Fetching Jira tickets for $email..." >&2
-  local jira_data
-  jira_data=$(jira issue list --assignee="$email" --order-by=priority --plain --no-headers 2>/dev/null) || {
-    warn "Could not fetch Jira tickets. Proceeding without ticket ID."
-    return 0
-  }
-
-  if [[ -z "$jira_data" ]]; then
-    warn "No Jira tickets found. Proceeding without ticket ID."
-    return 0
-  fi
-
-  echo "$jira_data" >&2
-  echo "" >&2
-
-  local formatted_tickets
-  formatted_tickets=$(echo "$jira_data" | awk '{
-    ticket_id = $2
-    $1 = $2 = ""
-    description = $0
-    gsub(/^[ \t]+/, "", description)
-    if (length(description) > 60) {
-      description = substr(description, 1, 57) "..."
-    }
-    print ticket_id " - " description
-  }')
-
-  if [[ -z "$formatted_tickets" ]]; then
-    warn "No tickets to display. Proceeding without ticket ID."
-    return 0
-  fi
-
-  local selected_ticket
-  selected_ticket=$(echo -e "SKIP - Create branch without ticket ID\n$formatted_tickets" | \
-    fzf --prompt="Select Jira ticket (or skip): " \
-        --height=40% \
-        --border \
-        --info=inline) || error "Ticket selection cancelled"
-
-  if [[ "$selected_ticket" != "SKIP"* ]]; then
-    echo "${selected_ticket%% -*}"
-  fi
-}
-
-get_branch_description() {
-  local ticket_id=$1
-  local editor="${EDITOR:-vi}"
-  local tmpfile
-  tmpfile=$(mktemp)
-
-  trap "rm -f '$tmpfile'" EXIT
-
-  if [[ -n "$ticket_id" ]]; then
-    cat > "$tmpfile" << EOF
-# Selected ticket: $ticket_id
-# Enter your branch description below in kebab-case (e.g., my-description):
-# The ticket ID will be automatically included in the branch name.
-# Lines starting with # will be ignored.
-
-EOF
-  else
-    cat > "$tmpfile" << 'EOF'
-# Enter your branch description below in kebab-case (e.g., my-description):
-# Lines starting with # will be ignored.
-
-EOF
-  fi
-  
-  "$editor" "$tmpfile" < /dev/tty > /dev/tty
-
-  local desc
-  desc=$(grep -v '^#' "$tmpfile" | tr -d '\n' | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')
-
-  echo "$desc"
-}
-
-validate_description() {
-  local desc=$1
-
-  if [[ -z "$desc" ]]; then
-    error "No description provided"
-  fi
-
-  if [[ ! "$desc" =~ ^[a-z0-9]+(-[a-z0-9]+)*$ ]]; then
-    error "Invalid branch description format.\nUse lowercase letters, numbers, and hyphens only.\nNo trailing or consecutive hyphens allowed.\nExample: my-feature-description"
-  fi
-}
-
-create_branch() {
-  local type=$1
-  local ticket_id=$2
-  local desc=$3
-
-  local branch
-  if [[ -n "$ticket_id" ]]; then
-    branch="$type/$ticket_id-$desc"
-  else
-    branch="$type/$desc"
-  fi
-
-  if git show-ref --verify --quiet "refs/heads/$branch"; then
-    error "Branch '$branch' already exists"
-  fi
-
-  echo ""
-  echo "Creating branch: $branch"
-  git checkout -b "$branch"
-}
-
-main() {
-  check_dependencies
-  check_git_repo
-  check_current_branch
-
-  local email
-  email=$(get_user_email)
-
-  local type
-  type=$(select_branch_type)
-
-  echo "About to call select_jira_ticket" >&2
-  local ticket_id=""
-  ticket_id=$(select_jira_ticket "$email")
-  local desc
-  desc=$(get_branch_description "$ticket_id")
-  validate_description "$desc"
-  create_branch "$type" "$ticket_id" "$desc"
-}
-
-main "$@"

dots/.config/nvim/flake.lock

@@ -42,11 +42,11 @@
     },
     "nixCats": {
       "locked": {
-        "lastModified": 1770584904,
-        "narHash": "sha256-9Zaz8lbKF2W9pwXZEnbiGsicHdBoU+dHt3Wv3mCJoZ8=",
+        "lastModified": 1774835836,
+        "narHash": "sha256-6ok7iv/9R82vl6MYe3Lwyyb6S5bmW2PxEZtmjzlqyPs=",
         "owner": "BirdeeHub",
         "repo": "nixCats-nvim",
-        "rev": "538fdde784d2909700d97a8ef307783b33a86fb1",
+        "rev": "ebb9f279a55ca60ff4e37e4accf6518dc627aa8d",
         "type": "github"
       },
       "original": {
@@ -73,11 +73,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1770843696,
-        "narHash": "sha256-LovWTGDwXhkfCOmbgLVA10bvsi/P8eDDpRudgk68HA8=",
+        "lastModified": 1775608838,
+        "narHash": "sha256-2ySoGH+SAi34U0PeuQgABC0WiH9LQ3tkyHTiE93KUeg=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "2343bbb58f99267223bc2aac4fc9ea301a155a16",
+        "rev": "9a01fad67a57e44e1b3e1d905c6881bcfb209e8a",
         "type": "github"
       },
       "original": {
@@ -106,11 +106,11 @@
     "plugins-helm-ls-nvim": {
       "flake": false,
       "locked": {
-        "lastModified": 1768584652,
-        "narHash": "sha256-jnMc87OjURNcqsva0npYgVyUrWc5C6L7yHpNvt9eSmg=",
+        "lastModified": 1773934114,
+        "narHash": "sha256-8trqFsA7nTKSdtkiAL0Sa9bXjh5ONtAqN7XNE/B8ukM=",
         "owner": "qvalentin",
         "repo": "helm-ls.nvim",
-        "rev": "f0b9a1723890971a6d84890b50dbf5f40974ea1b",
+        "rev": "20df43509b02a3ce3c6b3eee254d6e2bffa9a370",
         "type": "github"
       },
       "original": {

dots/.config/nvim/flake.nix

@@ -78,8 +78,6 @@
               mcp-hub
               nixd
               nixfmt
-              nodePackages.prettier
-              nodePackages.typescript-language-server
               ormolu
               prettierd
               rust-analyzer
@@ -88,6 +86,7 @@
               stylelint
               stylua
               tree-sitter
+              typescript-language-server
               vscode-langservers-extracted
               vtsls
               yaml-language-server

flake.nix

@@ -70,9 +70,6 @@
       };
     in
     {
-      nix.nixPath = [
-        "nixpkgs=${inputs.nixpkgs}"
-      ]; # <https://github.com/nix-community/nixd/blob/main/nixd/docs/configuration.md>
       nixosConfigurations =
         (lib.genAttrs hostDirNames (
           host:

home/modules/ai-tools/claude-code.nix

@@ -0,0 +1,71 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.ai-tools.claude-code;
+  rtk-version = "0.18.1";
+in
+{
+  options.ai-tools.claude-code = {
+    enable = lib.mkEnableOption "claude code with rtk and ccline";
+  };
+
+  config = lib.mkIf cfg.enable {
+    home.packages = with pkgs; [
+      claude-code
+      (pkgs.stdenv.mkDerivation {
+        name = "ccline";
+        src = pkgs.fetchurl {
+          url = "https://github.com/Haleclipse/CCometixLine/releases/download/v1.0.8/ccline-linux-x64.tar.gz";
+          hash = "sha256-Joe3Dd6uSMGi66QT6xr2oY/Tz8rA5RuKa6ckBVJIzI0=";
+        };
+
+        unpackPhase = ''
+          tar xzf $src
+        '';
+
+        installPhase = ''
+          mkdir -p $out/bin
+          cp ccline $out/bin/
+          chmod +x $out/bin/ccline
+        '';
+
+        meta = with pkgs.lib; {
+          description = "CCometixLine Linux x64 CLI (Claude Code statusline)";
+          homepage = "https://github.com/Haleclipse/CCometixLine";
+          license = licenses.mit;
+          platforms = [ "x86_64-linux" ];
+        };
+      })
+      (pkgs.stdenv.mkDerivation {
+        name = "rtk-${rtk-version}";
+        version = rtk-version;
+        src = pkgs.fetchurl {
+          url = "https://github.com/rtk-ai/rtk/releases/download/v${rtk-version}/rtk-x86_64-unknown-linux-gnu.tar.gz";
+          hash = "sha256-XoTia5K8b00OzcKYCufwx8ApkAS31DxUCpGSU0jFs2Q=";
+        };
+
+        unpackPhase = ''
+          tar xzf $src
+        '';
+
+        installPhase = ''
+          mkdir -p $out/bin
+          cp rtk $out/bin/
+          chmod +x $out/bin/rtk
+        '';
+
+        meta = with pkgs.lib; {
+          description = "RTK - AI coding tool enhancer";
+          homepage = "https://www.rtk-ai.app";
+          license = licenses.mit;
+          platforms = [ "x86_64-linux" ];
+        };
+      })
+      mcp-nixos
+    ];
+  };
+}

home/modules/ai-tools/default.nix

@@ -1,116 +1,7 @@
 {
-  lib,
-  config,
-  pkgs,
-  ...
-}:
-let
-  cfg = config.ai-tools;
-  rtk-version = "0.18.1";
-in
-{
-  options.ai-tools = {
-    claude-code.enable = lib.mkEnableOption "claude code with rtk and ccline";
-    tirith.enable = lib.mkEnableOption "tirith shell security guard";
-    opencode.enable = lib.mkEnableOption "opencode";
-  };
-
-  config = lib.mkMerge [
-    (lib.mkIf cfg.claude-code.enable {
-      home.packages = with pkgs; [
-        claude-code
-        (pkgs.stdenv.mkDerivation {
-          name = "ccline";
-          src = pkgs.fetchurl {
-            url = "https://github.com/Haleclipse/CCometixLine/releases/download/v1.0.8/ccline-linux-x64.tar.gz";
-            hash = "sha256-Joe3Dd6uSMGi66QT6xr2oY/Tz8rA5RuKa6ckBVJIzI0=";
-          };
-
-          unpackPhase = ''
-            tar xzf $src
-          '';
-
-          installPhase = ''
-            mkdir -p $out/bin
-            cp ccline $out/bin/
-            chmod +x $out/bin/ccline
-          '';
-
-          meta = with pkgs.lib; {
-            description = "CCometixLine Linux x64 CLI (Claude Code statusline)";
-            homepage = "https://github.com/Haleclipse/CCometixLine";
-            license = licenses.mit;
-            platforms = [ "x86_64-linux" ];
-          };
-        })
-        (pkgs.stdenv.mkDerivation {
-          name = "rtk-${rtk-version}";
-          version = rtk-version;
-          src = pkgs.fetchurl {
-            url = "https://github.com/rtk-ai/rtk/releases/download/v${rtk-version}/rtk-x86_64-unknown-linux-gnu.tar.gz";
-            hash = "sha256-XoTia5K8b00OzcKYCufwx8ApkAS31DxUCpGSU0jFs2Q=";
-          };
-
-          unpackPhase = ''
-            tar xzf $src
-          '';
-
-          installPhase = ''
-            mkdir -p $out/bin
-            cp rtk $out/bin/
-            chmod +x $out/bin/rtk
-          '';
-
-          meta = with pkgs.lib; {
-            description = "RTK - AI coding tool enhancer";
-            homepage = "https://www.rtk-ai.app";
-            license = licenses.mit;
-            platforms = [ "x86_64-linux" ];
-          };
-        })
-        mcp-nixos
-      ];
-    })
-    (lib.mkIf cfg.tirith.enable {
-      home.packages = with pkgs; [
-        tirith
-      ];
-    })
-    (lib.mkIf (cfg.tirith.enable && cfg.claude-code.enable) {
-      home.file.".claude/hooks/tirith-check.py" = {
-        source = ./tirith-check.py;
-        executable = true;
-      };
-
-      home.activation.tirith-claude-code = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
-        ${pkgs.tirith}/bin/tirith setup claude-code --with-mcp --scope user --force 2>/dev/null || true
-      '';
-    })
-    (lib.mkIf cfg.opencode.enable {
-      home.packages = with pkgs; [
-        opencode
-      ];
-      home.file.".config/opencode/opencode.json".text = builtins.toJSON {
-        "$schema" = "https://opencode.ai/config.json";
-        permission = {
-          external_directory = {
-            "/run/secrets/" = "deny";
-            "~/.config/sops/age/keys.txt" = "deny";
-            "~/.ssh/id_rsa" = "deny";
-            "~/.ssh/id_ed25519" = "deny";
-            "~/.ssh/id_ecdsa" = "deny";
-            "~/.ssh/id_dsa" = "deny";
-            "/etc/ssh/ssh_host_rsa_key" = "deny";
-            "/etc/ssh/ssh_host_ed25519_key" = "deny";
-            "/etc/ssh/ssh_host_ecdsa_key" = "deny";
-            "/etc/ssh/ssh_host_dsa_key" = "deny";
-          };
-          command = {
-            sops = "deny";
-          };
-        };
-        plugin = [ "@mohak34/opencode-notifier@latest" ];
-      };
-    })
+  imports = [
+    ./claude-code.nix
+    ./opencode.nix
+    ./tirith.nix
   ];
 }

home/modules/ai-tools/opencode.nix

@@ -0,0 +1,23 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.ai-tools.opencode;
+in
+{
+  options.ai-tools.opencode = {
+    enable = lib.mkEnableOption "opencode";
+  };
+
+  config = lib.mkIf cfg.enable {
+    home.packages = with pkgs; [
+      opencode
+    ];
+    home.file.".config/opencode/opencode.json".text = builtins.toJSON {
+      plugin = [ "@mohak34/opencode-notifier@latest" ];
+    };
+  };
+}

home/modules/ai-tools/tirith.nix

@@ -0,0 +1,32 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.ai-tools;
+in
+{
+  options.ai-tools.tirith = {
+    enable = lib.mkEnableOption "tirith shell security guard";
+  };
+
+  config = lib.mkMerge [
+    (lib.mkIf cfg.tirith.enable {
+      home.packages = with pkgs; [
+        tirith
+      ];
+    })
+    (lib.mkIf (cfg.tirith.enable && cfg.claude-code.enable) {
+      home.file.".claude/hooks/tirith-check.py" = {
+        source = ./tirith-check.py;
+        executable = true;
+      };
+
+      home.activation.tirith-claude-code = lib.hm.dag.entryAfter [ "writeBoundary" ] ''
+        ${pkgs.tirith}/bin/tirith setup claude-code --with-mcp --scope user --force 2>/dev/null || true
+      '';
+    })
+  ];
+}

home/modules/ssh/default.nix

@@ -39,6 +39,10 @@ in
       // {
         "*" = {
           addKeysToAgent = "yes";
+          identityFile = [
+            "~/.ssh/id_ed25519_sk"
+            "~/.ssh/id_ed25519"
+          ];
         };
       };
   };

hosts/andromache/default.nix

@@ -31,19 +31,20 @@ in
     ../../modules/firewall
     ../../modules/fonts
     ../../modules/gaming
-    ../../modules/networking
+    ../../modules/hcloud
     ../../modules/keyboard
     ../../modules/localization
+    ../../modules/networking
     ../../modules/nvidia
     (import ../../modules/secrets { inherit lib inputs config; })
     ../../modules/ssh
     ../../modules/storage
     ../../modules/stylix
     ../../modules/syncthing
+    ../../modules/tailscale
     ../../modules/users
     ../../modules/wol
     ../../modules/yubikey
-    ../../modules/hcloud
   ];
 
   home-manager.users.${config.host.username} = import ../../home/hosts/andromache {
@@ -62,7 +63,11 @@ in
     inherit (config.host) username;
     nixSigningKey.enable = true;
   };
+
+  tailscale.enable = true;
+
   docker.user = config.host.username;
+
   hcloud = {
     enable = true;
     inherit (config.host) username;

hosts/andromache/ssh_user.pub

@@ -1 +1 @@
-ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOOXPEhdKOVnb6mkeLLUcFGt+mnUR5pMie17JtjrxwgO h@andromache
+sk-ssh-ed25519@openssh.com AAAAGnNrLXNzaC1lZDI1NTE5QG9wZW5zc2guY29tAAAAILoWbtyewa2LUWpWCYK46OCWs+2E+BeIsk+0We20qsf9AAAABHNzaDo= h@andromache

hosts/astyanax/ssh_user.pub

@@ -1 +1 @@
-ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIzP1PjIDb1tN9nhPOK88HYDtTNk9SN9ZpEem2id49Fa h@astyanax
+sk-ssh-ed25519@openssh.com AAAAGnNrLXNzaC1lZDI1NTE5QG9wZW5zc2guY29tAAAAIPz79WrdgQKWFxMYEqtDaMW/PCZ8xP1U1KXEAxuPTiQyAAAABHNzaDo= h@astyanax

modules/common/default.nix

@@ -25,6 +25,7 @@ in
     system.stateVersion = lib.mkDefault "25.05";
 
     nix = {
+      nixPath = [ "nixpkgs=${inputs.nixpkgs}" ]; # https://github.com/nix-community/nixd/blob/main/nixd/docs/configuration.md
       optimise = {
         automatic = true;
         dates = [ "05:00" ];

modules/ssh/extract-keys.nix

@@ -14,7 +14,10 @@ in
       chmod 644 "$HOST_DIR/ssh_host.pub"
     fi
 
+    USER_KEY="/home/${username}/.ssh/id_ed25519_sk.pub"
+    if [ ! -f "$USER_KEY" ]; then
       USER_KEY="/home/${username}/.ssh/id_ed25519.pub"
+    fi
     if [ -f "$USER_KEY" ] && [ -d "$HOST_DIR" ]; then
       cp "$USER_KEY" "$HOST_DIR/ssh_user.pub"
       chown ${username}:users "$HOST_DIR/ssh_user.pub"

modules/tailscale/default.nix

@@ -0,0 +1,19 @@
+{
+  lib,
+  config,
+  ...
+}:
+{
+  # TODO: handle auth declaratively to skip `tailscale up`
+
+  options.tailscale = {
+    enable = lib.mkEnableOption "tailscale";
+  };
+
+  config = lib.mkIf config.tailscale.enable {
+    services.tailscale = {
+      enable = true;
+      openFirewall = true;
+    };
+  };
+}