docs: add sections and fix typos/errors

few side refactors of this:
- no more `dns.domain`, it all must rely on `fqdn`, prevents
  inconsistencies.
- also added an specific host `tuxcord-acmetest` that uses the key zone
  for `nix.tuxcord.net` to test certificate pulling.

agenix/dns/tuxcord.net/javalsai.tuxcord.net.key.age

@@ -1,7 +0,0 @@
-age-encryption.org/v1
--> ssh-ed25519 Wl2fDA 3CWPYLgoTMGb9gBbDzZIQxYJ9Gfm49g6lqQyqlegUDQ
-ryhsPP5+Byus2e5GSXDJlKYX1o3HfQ87CLRv2htU4n4
--> ssh-ed25519 EiAAKw B2uGdkeC3OZISN2iH2DR1J7L3/mbuFvebzqaTdAURCw
-ze0X/MmHP78rRqAn0O3VBtnMJsiOXPk8RIe82tdQMeg
---- kLBxPuJdbPmJ1Lz3iBu8EPItdZtpNHIyV6pz1QzhcUY
-ä3ÛÿÉèŸP>gòh@­ö•AZ’üz-í6R€¸zèÚ¢[ÇÝÍPÂòㆿy?•ÉŽU�SNÝ©&ú#}ÝR+o?.B¶&´5]ÇW€OΉPuh‹½ŽÞ=t¶5|¿×“s×€ú&!­‰Î-�æTÝSÆfÕ™-j"#žiÂwzºš›ãjö¯“HŒí�

agenix/ntfy.age

@@ -1,20 +1,34 @@
 age-encryption.org/v1
--> ssh-ed25519 Wl2fDA 8rfiRx7+Gr9BtiSXsVEs2W+pXoms6ynODC1TL90+Wi4
+-> ssh-ed25519 Wl2fDA dM0TgKtswZcbEV9tGGY26YCksV2xadHWXv7D/KksAWk
-/uMnYMJovbaPjwX1qCAtIokov40RYIAm2Mup5XKBJvw
+1vCcuHmVP2xiHd/7hh0z2Hiq/EeA8uvdsRtQReC5hNY
--> ssh-ed25519 zNC8SA FlxMK7kMYnKHY9MBJ+HYDI4GNS0nSgZxVuRe4yTWBgg
+-> ssh-ed25519 zNC8SA uTO/3ePjgiKqk3jeRGZX5D3LjzhSBlp2rD2ZakKmfX0
-HPOV31k8Ueb1W5usG7iLXDQxyAlISrgHThddHpGY2+s
+tVkEEcP/KfD9x52l7iz5F3hKK0LSckjXWK5YP2aeBt4
--> ssh-ed25519 EiAAKw Bu7+NJXivoRA07glNWUlBGu03J0ueth7XDU7SWQYT30
+-> ssh-ed25519 EiAAKw Etu0I4IzJ3BB2SzCeiexx+dhcLUO5d2Ws+WiJyLk/Sw
-r/DBmf4TRDJBgFF0KdeHuKL5hLdU1z6HtfAAVbc6Y0I
+9GBcZPsIXO3mXbri3lFYjtBBu0wFYul6hKsCvBKVLFs
 -> ssh-rsa eFi+Zw
-Nu4gAM/vbh0kpEUIaT4P6iTe9qFFM/9IVxiiKPYHdPnCmPJHrug1afLLFrrrpqkd
+uOZsBC+IMHdX2h9Jq/CF/L3BsxDW+dULk04JQbDeM85Mrxxdrv2X3w7AW8YU2KS+
-o1NrfYIM9gW6jl5QMCcP5DpzMTppokX0P1Tz1ZeOEtZUVtGeZ7Q2wmL4zftwmG9J
+Xg8LnzH01z4Nfs89uysM/lsWptc9qMeaK9o0oHC+tSJH4Ch43MejbmFYjFibHaCm
-qoDjsCd0z6MPDUdU46qc7kjQBhOwGLfHXTfGLXGNZxqj0oLvEoEKpdvFNBvMSyxK
+krQM7dAGIJwc/o0+ykaCrbXSvXAyfd6Nw1izou2ZcDRI7mTipOZO8F949SIk//Rc
-oGZRwGsHQcUXKhCPtf6PVtSkHMABzpUAhgS8oqjp4RVurD0lcrPgsx8pSRRarfyE
+UJgPLqpGwScEfrHf4f6tySC4LmD0bPIV1xDpmmXcS7c83E9+iVOtb5Y1In6CQrF1
-ll1QbFCjftuJfeIEshgRkaLGjIQpZDFA3w2XMqDddFz5H/9Ak+F8/rkNnUrN2x4M
+XZQCb9MkPySbuicwR022CySb+lc7Ru44RdqBgV1e+wphyZCoqCk09i18egV3hNs6
-amca8s4Sbls6RjyysarIytilCtpaKEI2sgkD2fERao6ayTSnWF45qqh635OLaP5A
+iEul3M8dqV27yRKrWIUD5jT2tUszTNJfreiuZl9eDmLkcVWExkWzqWPUFJ48hQiZ
-b7qcru9gO0C3Ik+UuiZMgovxo/+yBYe3+8x8q/uKR4apPAkt/2q28Uilw1WboIEB
+89Z4Evn04vZGoeL67K5q93lSRHz109zT/KIJSQMZpbaecGAoiZDM8Mdq3KzawGSG
-rIjBr0BN1JeHvkiyljJGcvGf5jHdmOrpQu/L1xuSDjsTnh+U6BshQC8bbkJNsVoL
+ENQazx6lnGoMccvxFhjrVqfYj3U4S/pnCow5fatvkBQSyysL63UxE5ivcFUHHppB
 
---- GCTLfa/BICL9AWTaqGC13M101Z8sqSqPP4ysJVv5zvg
+-> ssh-ed25519 QovoLQ wgg0cFlYEVafE3rXK4GrID3RTatZdKPYzsjT18WskFM
-]
+bgv+7an3xgdqf6WaiB1FFkXObcykUnvH6lJmX5gFJkQ
-ý­¢Ôÿi¹‡7c·f`b@%X”¿J�)û[<+;x-ÇKmTõ@ãÌ„�ýŸK]7sc*ë­Ÿ‡¼2Ý®5
+-> ssh-rsa OFkEIg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+--- Vb9o/bhuN6XXjfK04haEEUXnuIA02j4GH9PmAh0ayN8
+óE¬dGs;’Ž°À±��ü
+ñ,OHˆÿœˆ{²¶>ú*wAÃLÌÄ\©0SQöÖ*{6fô‰+Xš¨.

agenix/secrets.nix

@@ -1,25 +1,17 @@
 let
-  inherit (import ../lib)
+  users = import ../lib/ssh/keys.nix;
-    users
-    adminSSHKeys
-    attrsToList
-    getSSHKeys
-    ;
 
   tuxcord-ca = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPxiko5Csyq9UODglYzLBvRfxkhQu9GXP7SH2BpC8G/7";
 in
 {
-  "ntfy.age".publicKeys = [ tuxcord-ca ] ++ adminSSHKeys;
+  "ntfy.age".publicKeys = [ tuxcord-ca ] ++ builtins.attrValues users;
 
   # tsig-keygen etc.sub.domain.tld.
-  "dns/tuxcord.net/tuxcord.net.key.age".publicKeys = [ tuxcord-ca ] ++ adminSSHKeys;
+  "dns/tuxcord.net/tuxcord.net.key.age".publicKeys = [ tuxcord-ca ] ++ [ users.error users.javalsai ];
-  "dns/nix.tuxcord.net/nix.tuxcord.net.key.age".publicKeys = [ tuxcord-ca ] ++ adminSSHKeys;
+  # "dns/tuxcord.net/XXX.tuxcord.net.key.age".publicKeys = [ tuxcord-ca ] ++ [ users.XXX ];
-  "dns/tuxcord.test/tuxcord.test.key.age".publicKeys = [ tuxcord-ca ] ++ adminSSHKeys;
+
-  "dns/tuxcord.test/sub.tuxcord.test.key.age".publicKeys = [ tuxcord-ca ] ++ adminSSHKeys;
+  "dns/tuxcord.test/tuxcord.test.key.age".publicKeys = [ tuxcord-ca ] ++ builtins.attrValues users;
+  "dns/tuxcord.test/sub.tuxcord.test.key.age".publicKeys = [ tuxcord-ca ] ++ builtins.attrValues users;
+
+  "dns/nix.tuxcord.net/nix.tuxcord.net.key.age".publicKeys = [ tuxcord-ca ] ++ builtins.attrValues users;
 }
-// builtins.listToAttrs (
-  map (user: {
-    name = "dns/tuxcord.net/${user.name}.tuxcord.net.key.age";
-    value.publicKeys = [ tuxcord-ca ] ++ getSSHKeys user.name;
-  }) (builtins.filter (user: user.value.options.ddns or false) (attrsToList users))
-)

flake.nix

@@ -52,11 +52,6 @@
           formatter = pkgs.nixfmt;
         };
 
-      flake = {
-        lib = import ./lib;
-        npins = import ./npins;
-      };
-
       systems = [
         "x86_64-linux"
         "aarch64-linux"

lib/default.nix

@@ -1,21 +0,0 @@
-rec {
-  users = import ./users.nix;
-
-  adminSSHKeys = builtins.concatLists (
-    map (user: getSSHKeys user.name) (
-      builtins.filter (user: user.value.options.admin or false) (attrsToList users)
-    )
-  );
-
-  attrsToList = mapAttrsToList nameValuePair;
-  mapAttrsToList = f: attrs: builtins.attrValues (builtins.mapAttrs f attrs);
-  nameValuePair = name: value: { inherit name value; };
-  toList = x: if builtins.isList x then x else [ x ];
-
-  getSSHKeys =
-    username:
-    if (builtins.hasAttr "ssh" users.${username}) then
-      toList users.${username}.ssh
-    else
-      builtins.warn "user ${username} declared without ssh key" [ ];
-}

lib/ssh/keys.nix

@@ -0,0 +1,8 @@
+{
+  error = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDzdpxex2GlFVf5G2qsh3Ixa/XCMjnbq4JSTmAev7WYJ error.nointernet@gmail.com";
+  javalsai = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDFjavnLqxIzFLIUpUWDOwhlYeoII4Qk1/9e0yWWxD/P";
+  max = "ssh-rsa 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";
+
+  vectorum = "ssh-rsa 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";
+  pickzelle = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPUYQUWoL8iGc+PSrRrHyNwcOcmgGwPvJAM9HRJkPqcW pixel@DOOM-Machine";
+}

lib/users.nix

@@ -1,30 +0,0 @@
-{
-  error = {
-    ssh = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDzdpxex2GlFVf5G2qsh3Ixa/XCMjnbq4JSTmAev7WYJ error.nointernet@gmail.com";
-    options = {
-      admin = true;
-      ddns = true;
-    };
-  };
-
-  javalsai = {
-    ssh = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDFjavnLqxIzFLIUpUWDOwhlYeoII4Qk1/9e0yWWxD/P";
-    options = {
-      admin = true;
-      ddns = true;
-    };
-  };
-
-  max = {
-    ssh = "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABgQDxVfJhzPDZ108UjB3Vj/akzlzYn27kyAw29AuYAr7gvG5vrqhLUYYmK8t+ZVWVpc1g6cK7OF1oUn2E5Qfmy6wqyZQXftAZ4OcRS0MB71W1bAcRq3rGe6KQDm8RSEeygX+zO+2Z6zQmVWgPr/I+JFQZ8wiWdP8X8djqTRdhqUD+SR3ZgTcnY3aLmeB/I56rcZQ3lKIeg/pEsyQ8weptlV0rTWamna6Z7Nw48VwWNSI+6EqfW2/4/edm0Ue8jMNqNZ0yx+kHJbudPgZgSR1SiR2rqlEEUaiQJQQV3VdY4DhGm7143ZSKUxyKlfTuQ7qR1zSIg6f5V71A37ik9YiSbBlOZO86swR4qHESoMNf608IuqRt2NdALHwozFPUCu16qnhu5JTk8twSAzrAhOk5zWQj1LYMoQEBhcFSmwir/1gE71NSjYtqXGVAdfkVmZ4uqG5+a1D7H3VXWOqu/j839M045O1ZBY6X3lKDsEJ1Z1+LCl/NojWnvPtJUHYI6+SdQ6k=";
-    options.admin = true;
-  };
-
-  vectorum = {
-    ssh = "ssh-rsa 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";
-  };
-
-  pickzelle = {
-    ssh = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPUYQUWoL8iGc+PSrRrHyNwcOcmgGwPvJAM9HRJkPqcW pixel@DOOM-Machine";
-  };
-}

nixos/users.nix

@@ -1,6 +1,25 @@
 { lib, self, ... }:
 let
-  inherit (self.lib) users;
+  users = [
+    {
+      name = "error";
+      options.admin = true;
+    }
+    {
+      name = "javalsai";
+      options.admin = true;
+    }
+    {
+      name = "max";
+      options.admin = true;
+    }
+    {
+      name = "vectorum";
+    }
+    {
+      name = "pickzelle";
+    }
+  ];
 
   adminGroups = [
     "adm"
@@ -11,17 +30,29 @@ let
     "wheel"
   ];
 
+  getSSHKeys =
+    username:
+    let
+      sshKeys = import "${self}/lib/ssh/keys.nix";
+    in
+    if (builtins.hasAttr username sshKeys) then
+      lib.lists.toList sshKeys.${username}
+    else
+      lib.warn "user ${username} declared without ssh key" [ ];
+
   mkUser =
     name: uid: options:
     let
       admin = options.admin or false;
+
     in
     {
       users.users.${name} = {
-        inherit uid;
         isNormalUser = true;
         extraGroups = lib.optionals admin adminGroups;
-        openssh.authorizedKeys.keys = self.lib.getSSHKeys name;
+        inherit uid;
+
+        openssh.authorizedKeys.keys = getSSHKeys name;
       };
 
       systemd.slices."user-${builtins.toString uid}".sliceConfig = {
@@ -38,20 +69,21 @@ in
 lib.recursiveUpdate
   (builtins.foldl'
     (attrs: user: {
-      options = lib.recursiveUpdate attrs.options (
+      options = lib.recursiveUpdate attrs.options (mkUser user.name attrs.uid (user.options or { }));
-        mkUser user.name attrs.uid (user.value.options or { })
-      );
       uid = attrs.uid + 1;
     })
     {
       options = { };
       uid = 1000;
     }
-    (lib.attrsToList users)
+    users
   ).options
   {
     users.users.root = {
       initialPassword = "tuxcord";
-      openssh.authorizedKeys.keys = self.lib.adminSSHKeys;
+
+      openssh.authorizedKeys.keys = lib.lists.concatLists (
+        map (user: getSSHKeys user.name) (builtins.filter (user: user.options.admin or false) users)
+      );
     };
   }