Refactor imports and secrets. Add per system properties and role based secret access.

Highlights
- No need to update flake for every machine anymore, just add a properties.nix file.
- Roles are automatically generated from all machine configurations.
- Roles and their secrets automatically are grouped and show up in agenix secrets.nix
- Machines and their service configs may now query the properties of all machines.
- Machine configuration and secrets are now competely isolated into each machine's directory.
- Safety checks to ensure no mixing of luks unlocking secrets and hosts with primary ones.
- SSH pubkeys no longer centrally stored but instead per machine where the private key lies for better cleanup.

common/network/default.nix

@@ -7,7 +7,6 @@ let
 in
 {
   imports = [
-    ./hosts.nix
     ./pia-openvpn.nix
     ./pia-wireguard.nix
     ./ping.nix

common/network/hosts.nix

@@ -1,66 +0,0 @@
-{ config, lib, ... }:
-
-let
-  system = (import ../ssh.nix).system;
-
-  # hostnames that resolve on clearnet for LUKS unlocking
-  unlock-clearnet-hosts = {
-    ponyo = "unlock.ponyo.neet.dev";
-    phil = "unlock.phil.neet.dev";
-    s0 = "s0";
-  };
-
-  # hostnames that resolve on tor for LUKS unlocking
-  unlock-onion-hosts = {
-    liza = "5synsrjgvfzywruomjsfvfwhhlgxqhyofkzeqt2eisyijvjvebnu2xyd.onion";
-    router = "jxx2exuihlls2t6ncs7rvrjh2dssubjmjtclwr2ysvxtr4t7jv55xmqd.onion";
-    ponyo = "cfamr6artx75qvt7ho3rrbsc7mkucmv5aawebwflsfuorusayacffryd.onion";
-    s0 = "r3zvf7f2ppaeithzswigma46pajt3hqytmkg3rshgknbl3jbni455fqd.onion";
-  };
-in
-{
-  programs.ssh.knownHosts = {
-    ponyo = {
-      hostNames = [ "ponyo" "ponyo.neet.dev" "git.neet.dev" ];
-      publicKey = system.ponyo;
-    };
-    ponyo-unlock = {
-      hostNames = [ unlock-clearnet-hosts.ponyo unlock-onion-hosts.ponyo ];
-      publicKey = system.ponyo-unlock;
-    };
-    phil = {
-      hostNames = [ "phil" "phil.neet.dev" ];
-      publicKey = system.phil;
-    };
-    phil-unlock = {
-      hostNames = [ unlock-clearnet-hosts.phil ];
-      publicKey = system.phil-unlock;
-    };
-    router = {
-      hostNames = [ "router" "192.168.1.228" ];
-      publicKey = system.router;
-    };
-    router-unlock = {
-      hostNames = [ unlock-onion-hosts.router ];
-      publicKey = system.router-unlock;
-    };
-    ray = {
-      hostNames = [ "ray" ];
-      publicKey = system.ray;
-    };
-    s0 = {
-      hostNames = [ "s0" ];
-      publicKey = system.s0;
-    };
-    s0-unlock = {
-      hostNames = [ unlock-onion-hosts.s0 ];
-      publicKey = system.s0-unlock;
-    };
-  };
-
-  # prebuilt cmds for easy ssh LUKS unlock
-  environment.shellAliases =
-    lib.concatMapAttrs (host: addr: { "unlock-over-tor_${host}" = "torsocks ssh root@${addr}"; }) unlock-onion-hosts
-    //
-    lib.concatMapAttrs (host: addr: { "unlock_${host}" = "ssh root@${addr}"; }) unlock-clearnet-hosts;
-}

common/network/pia-openvpn.nix

@@ -108,6 +108,6 @@ in
         };
       };
     };
-    age.secrets."pia-login.conf".file = ../../secrets/pia-login.conf;
+    age.secrets."pia-login.conf".file = ../../secrets/pia-login.age;
   };
 }

common/network/pia-wireguard.nix

@@ -352,6 +352,6 @@ in
       };
     };
 
-    age.secrets."pia-login.conf".file = ../../secrets/pia-login.conf;
+    age.secrets."pia-login.conf".file = ../../secrets/pia-login.age;
   };
 }