feat(alpha): add alpha host

.sops.yaml

@@ -5,6 +5,7 @@ keys:
   - &hosts
     - &sirius age1maxsx5tq2h3d92rfyl8ekcdan5gu5cpch4qs3c56cu7qag02xgvs3h0gqc
     - &arcturus age1huqa3hc7wcxk4dpelrzny437nzrx4fnll3d8g9ahznzk268yju5qufapxy
+    - &alpha age1mzxxxzhy3us3rd960ufqv7vlxj5cnug86md6x69llg9ujzw2pqws057llf
 
 creation_rules:
   - path_regex: hosts/sirius/secrets.yaml$
@@ -17,3 +18,8 @@ creation_rules:
       - age:
           - *tux
           - *arcturus
+  - path_regex: hosts/alpha/secrets.yaml$
+    key_groups:
+      - age:
+          - *tux
+          - *alpha

modules/hosts/alpha/config.nix

@@ -0,0 +1,81 @@
+{ config, ... }:
+{
+  flake.modules.nixos.alpha =
+    {
+      hostName,
+      userName,
+      modulesPath,
+      ...
+    }:
+    {
+      imports =
+        with config.flake.modules.nixos;
+        [
+          boot
+          hardware
+          networking
+          virtualisation
+          services
+        ]
+        ++ [
+          (modulesPath + "/profiles/qemu-guest.nix")
+        ];
+
+      tnix = {
+        boot = {
+          legacy.enable = true;
+
+          impermanence = {
+            enable = true;
+
+            home = {
+              directories = [
+                ".local/share/nvim"
+                ".local/share/zsh"
+                ".local/share/zoxide"
+                ".local/state/lazygit"
+                ".local/share/opencode"
+              ];
+            };
+          };
+        };
+
+        networking.openssh.enable = true;
+
+        virtualisation = {
+          docker.enable = true;
+        };
+      };
+
+      sops.secrets = {
+        tux-password = {
+          sopsFile = ./secrets.yaml;
+          neededForUsers = true;
+        };
+
+        gemini-api-key = {
+          sopsFile = ./secrets.yaml;
+          owner = userName;
+        };
+
+        openrouter-api-key = {
+          sopsFile = ./secrets.yaml;
+          owner = userName;
+        };
+
+        opencode-go-api-key = {
+          sopsFile = ./secrets.yaml;
+          owner = userName;
+        };
+      };
+
+      # --- Networking ---
+      networking = {
+        hostName = hostName;
+        networkmanager.enable = true;
+        firewall.enable = false;
+      };
+
+      system.stateVersion = "26.05";
+    };
+}

modules/hosts/alpha/default.nix

@@ -0,0 +1,23 @@
+{
+  inputs,
+  config,
+  ...
+}:
+let
+  hostName = "alpha";
+  userName = "tux";
+  userEmail = "t@tux.rs";
+  system = "x86_64-linux";
+  unstable = true;
+  nixpkgs = if unstable then inputs.nixpkgs else inputs.nixpkgs-stable;
+in
+{
+  flake.nixosConfigurations."${hostName}" = nixpkgs.lib.nixosSystem {
+    inherit system;
+    specialArgs = { inherit hostName userName userEmail; };
+    modules = [
+      config.flake.modules.nixos.core
+      config.flake.modules.nixos.${hostName}
+    ];
+  };
+}

modules/hosts/alpha/disko.nix

@@ -0,0 +1,82 @@
+{ inputs, ... }:
+{
+  flake.modules.nixos.alpha =
+    { config, lib, ... }:
+    let
+      hasOptinPersistence = config.tnix.boot.impermanence.enable;
+      isLegacy = config.tnix.boot.legacy.enable;
+    in
+    {
+      imports = [
+        inputs.disko.nixosModules.disko
+      ];
+
+      disko.devices.disk.primary = {
+        device = "/dev/sda";
+        type = "disk";
+        content = {
+          type = "gpt";
+          partitions = {
+            ESP = {
+              size = "1G";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [
+                  "defaults"
+                  "umask=0077"
+                ];
+              };
+            };
+            root = {
+              size = "100%";
+              type = "8300";
+              content = {
+                type = "btrfs";
+                # Base subvolumes that always exist
+                subvolumes = {
+                  "/root" = {
+                    mountOptions = [
+                      "compress=zstd"
+                      "noatime"
+                      "space_cache=v2"
+                    ];
+                    mountpoint = "/";
+                  };
+                  "/nix" = {
+                    mountOptions = [
+                      "compress=zstd"
+                      "noatime"
+                      "noacl"
+                      "space_cache=v2"
+                    ];
+                    mountpoint = "/nix";
+                  };
+                }
+                # Conditionally merge /persist only when impermanence is enabled
+                // lib.optionalAttrs hasOptinPersistence {
+                  "/persist" = {
+                    mountOptions = [
+                      "compress=zstd"
+                      "noatime"
+                      "space_cache=v2"
+                    ];
+                    mountpoint = "/persist";
+                  };
+                };
+              };
+            };
+          }
+          // lib.optionalAttrs isLegacy {
+            boot = {
+              name = "boot";
+              size = "1M";
+              type = "EF02";
+            };
+          };
+        };
+      };
+    };
+}

modules/hosts/alpha/home.nix

@@ -0,0 +1,6 @@
+{ ... }:
+{
+  flake.modules.homeManager.alpha = {
+    home.stateVersion = "26.05";
+  };
+}

modules/hosts/alpha/secrets.yaml

@@ -0,0 +1,28 @@
+tux-password: ENC[AES256_GCM,data:tvx3nMoIuQSotxHDWLs7UesnyWY3u3EwkqAIzCw3Z2AJseaiqnt/xeSKAeUXPVSs85rVdIJ6Ys5+6r+NONEG7ujuNevpjJRNkQ==,iv:CB0BIrMfdiWiMCvmRdtsafh3dCAD5Qb3mOuE7eq4nA4=,tag:p/3AESwNCEL4EoU9rJjUPw==,type:str]
+gemini-api-key: ENC[AES256_GCM,data:Bo3Z5Jhce0UOBn77I2AcrXYbBgPLDx0eOjPC8J63E/VWNhMPbbxb,iv:iWOsTACOMcK3oqq848WnJ5Ku3tYy1aadmLB4IMgoyqg=,tag:BPzlXoP8/iJaj8c/YFCWyg==,type:str]
+openrouter-api-key: ENC[AES256_GCM,data:D+/ImUTg7UvBTh0fMlWMZ0O/GsQS/R4Hz+CO4l42R6mn+zk+udvw79BctXdWWyrFf2ZNOTJ/99QTtWOUOvHISWaEJogXyb+93g==,iv:c7OtgBu1Zaf7lA4InIsKOAPbAvTl3gaO7QGCFNx21Bo=,tag:KXiASj/qC1YzK6DUox57ug==,type:str]
+opencode-go-api-key: ENC[AES256_GCM,data:ipKkNcRqBERIQ6f6yFzVm999s+UwJys4elHWhzpL441RfOaG9MmRWMcD+wRLJ7DSWFjYu6uUPF7TKez8J6abWeKDgg==,iv:FDSYE3R8zKVxWiP2S/sCVcwEu3fEXg/hCeqCRSF+c6g=,tag:5RDuMFGMoN6xwAYj0HiyjQ==,type:str]
+sops:
+    age:
+        - recipient: age14vktfes95f33vuefwnmuvryas7az04u76dsgyhfvsx73czkvmp2q7njkl4
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBaR0kzRXBGRjJaVldDRk90
+            KzYwSzJBeXBnNVZ0T2VaU2oyLzdRWmo5ZzNVCk9HTDVtMk8xL1cwL2FSRUR5UGdS
+            bXJnOXhTbWozWm5rd2pnaFNoWk0rWncKLS0tIGFWWmY2WU9YanJ5UElab3lqaXNo
+            QUhYUWs4bitJaGpXL200b0s0SmVIeVUKevQ1IVqmqGIYf014iL47C02+peSYJyeE
+            PNluZUA6VzrL2WpdJzDqxAwSWtcgXG0/JADIg+DssnhftiHMHzn3NQ==
+            -----END AGE ENCRYPTED FILE-----
+        - recipient: age1mzxxxzhy3us3rd960ufqv7vlxj5cnug86md6x69llg9ujzw2pqws057llf
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBnL1VPODRnNEs2bXlUVjB5
+            Z0pBUzBnRDQ0WWcvL2IvUHdmQXUxNjRpTVN3Ck9VLzd2QWpMMlFJck1EQXBVanl0
+            SC91bDFqNFlJZ2E0UXVZa3BKRjh3TlkKLS0tIENuc1dUZ1dDUTg2VXBueU1ETG9S
+            c095blJheHhVT0E4bjdGUWlYN0N4MVUKK42sChX4V37HK1SRKQxldLpft2jVfeiG
+            4TkObqH8ddGpbd7cX5a/wboTjYuEdAviWxjK2oBPgtcFc1f03X3tmA==
+            -----END AGE ENCRYPTED FILE-----
+    lastmodified: "2026-05-09T23:31:25Z"
+    mac: ENC[AES256_GCM,data:3WwKQZl3gAwJZO+R5gFM2vW7PrPKbiK3xKCu/SrLyC/Uxfi/0gTkKHpv2WRMMDVwXNIRMjFJ2VBOTeWUbPrYrqqR0zKf8PyLSOU3tFjia/Llg9Uo77iuZJHNWr+4AP8yAslxgTAqeS4MySi4gvO405oX0ZJdrxsfe3rQMJRzxl0=,iv:61xIfZZeN4NnwVe/k6MLsa0F2VDVbZvXAKvwTD42ID8=,tag:8xoI7Kd4P5osEhJDI1LldQ==,type:str]
+    unencrypted_suffix: _unencrypted
+    version: 3.12.2