manatee: Add host manatee

hosts/manatee/modules/age/default.nix

@@ -0,0 +1,14 @@
+{ inputs, pkgs, ... }:
+{
+  imports = [ inputs.agenix.nixosModules.default ];
+
+  config = {
+    age = {
+      identityPaths = [ "/etc/ssh/manatee" ];
+    };
+
+    environment.systemPackages = [
+      inputs.agenix.packages."${pkgs.system}".default
+    ];
+  };
+}

hosts/manatee/modules/boot/default.nix

@@ -0,0 +1,43 @@
+{
+  inputs,
+  lib,
+  config,
+  ...
+}:
+let
+  configurationLimit = config.mod.gc.configurationLimit;
+in
+{
+  imports = [ inputs.nix-gc-env.nixosModules.default ];
+
+  options = {
+    mod.gc = {
+      configurationLimit = lib.mkOption {
+        type = lib.types.int;
+        default = 10;
+        description = "number of configuration generations to keep";
+      };
+    };
+  };
+
+  config = {
+    nix.gc = {
+      automatic = true;
+      dates = "weekly";
+
+      # `delete_generations` added by nix-gc-env
+      delete_generations = "+${builtins.toString configurationLimit}";
+    };
+
+    boot = {
+      loader = {
+        systemd-boot = {
+          enable = true;
+          inherit configurationLimit;
+        };
+
+        efi.canTouchEfiVariables = true;
+      };
+    };
+  };
+}

hosts/manatee/modules/default.nix

@@ -0,0 +1,17 @@
+{ lib, ... }:
+let
+  toModulePath = dir: _: ./. + "/${dir}";
+  filterDirs = dirs: lib.attrsets.filterAttrs (_: type: type == "directory") dirs;
+in
+{
+  imports = lib.mapAttrsToList toModulePath (filterDirs (builtins.readDir ./.));
+
+  config = {
+    mod = {
+      gc.configurationLimit = 10;
+
+      ssh.enable = true;
+      git.enable = true;
+    };
+  };
+}

hosts/manatee/modules/git/default.nix

@@ -0,0 +1,39 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}:
+let
+  enabled = config.mod.git.enable;
+in
+{
+  options = {
+    mod.git = {
+      enable = lib.mkEnableOption "enable git module";
+    };
+  };
+
+  config = lib.mkIf enabled {
+    home-manager.users.alex = {
+      programs.git = {
+        enable = true;
+
+        includes = [
+          { path = ./gitconfig; }
+        ];
+
+        extraConfig = {
+          rerere.enable = true;
+        };
+      };
+
+      home.packages = [ pkgs.tig ];
+
+      home.file.".tigrc".text = ''
+        set main-view-line-number = yes
+        set main-view-line-number-interval = 1
+      '';
+    };
+  };
+}

hosts/manatee/modules/git/gitconfig

@@ -0,0 +1,9 @@
+[user]
+    name = Alexander Heldt
+    email = me@alexanderheldt.se
+
+[url "git@github.com:"]
+    insteadOf = https://github.com/
+
+[url "gitea@git.ppp.pm:"]
+    insteadOf = https://git.ppp.pm/

hosts/manatee/modules/network/default.nix

@@ -0,0 +1,22 @@
+{ ... }:
+{
+  networking = {
+    hostName = "manatee";
+
+    defaultGateway = "192.168.50.1";
+    nameservers = [ "1.1.1.1" ];
+    interfaces = {
+      enp3s0 = {
+        useDHCP = false;
+        ipv4 = {
+          addresses = [
+            {
+              address = "192.168.50.203";
+              prefixLength = 24;
+            }
+          ];
+        };
+      };
+    };
+  };
+}

hosts/manatee/modules/ssh/default.nix

@@ -0,0 +1,101 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}:
+let
+  enabled = config.mod.ssh.enable;
+
+  authorizedKeysPath = "/home/alex/.ssh/authorized-keys";
+  rootSSHKeyPath = "/etc/ssh";
+in
+{
+  options = {
+    mod.ssh = {
+      enable = lib.mkEnableOption "enable ssh module";
+    };
+  };
+
+  config = lib.mkIf enabled {
+    home-manager.users.alex = {
+      programs.ssh = {
+        enable = true;
+
+        matchBlocks = {
+          "git.ppp.pm" = {
+            hostname = "git.ppp.pm";
+            identityFile = "/home/alex/.ssh/alex.manatee-git.ppp.pm";
+          };
+        };
+      };
+    };
+
+    environment.etc."ssh/authorized_keys_command" = {
+      mode = "0755";
+      text = ''
+        #!${pkgs.bash}/bin/bash
+        for file in ${authorizedKeysPath}/*; do
+          ${pkgs.coreutils}/bin/cat "$file"
+        done
+      '';
+    };
+
+    services = {
+      openssh = {
+        enable = true;
+        ports = [ 1122 ];
+
+        hostKeys = [
+          {
+            path = "${rootSSHKeyPath}/root.manatee";
+            type = "ed25519";
+          }
+        ];
+
+        settings = {
+          PasswordAuthentication = false;
+          KbdInteractiveAuthentication = false;
+        };
+
+        authorizedKeysCommand = "/etc/ssh/authorized_keys_command";
+        authorizedKeysCommandUser = "root";
+      };
+    };
+
+    networking = {
+      firewall = {
+        allowedTCPPorts = [ 1122 ];
+      };
+    };
+
+    age.secrets = {
+      "root.manatee" = {
+        file = ../../../../secrets/manatee/root.manatee.age;
+        path = "${rootSSHKeyPath}/root.manatee";
+      };
+      "root.manatee.pub" = {
+        file = ../../../../secrets/manatee/root.manatee.pub.age;
+        path = "${rootSSHKeyPath}/root.manatee.pub";
+      };
+
+      "alex.pinwheel-manatee.pub" = {
+        file = ../../../../secrets/pinwheel/alex.pinwheel-manatee.pub.age;
+        path = "${authorizedKeysPath}/alex.pinwheel-manatee.pub";
+      };
+
+      "alex.manatee-git.ppp.pm" = {
+        file = ../../../../secrets/manatee/alex.manatee-git.ppp.pm.age;
+        path = "/home/alex/.ssh/alex.manatee-git.ppp.pm";
+        owner = "alex";
+        group = "users";
+      };
+      "alex.manatee-git.ppp.pm.pub" = {
+        file = ../../../../secrets/manatee/alex.manatee-git.ppp.pm.pub.age;
+        path = "/home/alex/.ssh/alex.manatee-git.ppp.pm.pub";
+        owner = "alex";
+        group = "users";
+      };
+    };
+  };
+}