fix: nix config optimizations

flake.nix

@@ -13,54 +13,51 @@
 
   outputs = { self, nixpkgs, disko, agenix, ... }:
   let
-    pkgs = import nixpkgs { system = "x86_64-linux"; };
+    # Shared module list for both nixosConfigurations and colmena
-
+    hostModules = name: system: [
-    # Helper to build a NixOS host config from hosts/<name>/
-    mkHost = name: system: nixpkgs.lib.nixosSystem {
-      modules = [
       { nixpkgs.hostPlatform = system; }
       disko.nixosModules.disko
       agenix.nixosModules.default
       ./modules/common.nix
       ./hosts/${name}
     ];
+
+    mkHost = name: system: nixpkgs.lib.nixosSystem {
+      modules = hostModules name system;
     };
 
     hosts = {
-      telefonmann = { system = "x86_64-linux"; };
+      telefonmann = { system = "x86_64-linux"; targetHost = "telefonmann"; };
     };
+
+    systems = nixpkgs.lib.unique (nixpkgs.lib.mapAttrsToList (_: cfg: cfg.system) hosts);
   in {
     # nixosConfigurations is used by nixos-anywhere for initial install
     nixosConfigurations = nixpkgs.lib.mapAttrs
       (name: cfg: mkHost name cfg.system)
       hosts;
 
-    devShells.x86_64-linux.default = pkgs.mkShell {
+    devShells = nixpkgs.lib.genAttrs systems (system:
+      let pkgs = import nixpkgs { inherit system; }; in {
+        default = pkgs.mkShell {
           packages = [
             pkgs.colmena
-        agenix.packages.x86_64-linux.default
+            agenix.packages.${system}.default
           ];
         };
+      });
 
     # colmena hive for ongoing deployments
     colmena = {
       meta = {
-        nixpkgs = pkgs;
+        nixpkgs = import nixpkgs { system = (nixpkgs.lib.head systems); };
-        specialArgs = { inherit disko; };
       };
     } // nixpkgs.lib.mapAttrs (name: cfg: {
       deployment = {
-        # Set targetHost per host in hosts/<name>/default.nix or override here
+        targetHost = cfg.targetHost;
-        # targetHost = "telefonmann.example.com";
         targetUser = "root";
       };
-      imports = [
+      imports = hostModules name cfg.system;
-        { nixpkgs.hostPlatform = cfg.system; }
-        disko.nixosModules.disko
-        agenix.nixosModules.default
-        ./modules/common.nix
-        ./hosts/${name}
-      ];
     }) hosts;
   };
 }

hosts/telefonmann/default.nix

@@ -2,7 +2,6 @@
   imports = [
     ./hardware.nix
     ./disko.nix
-    ../../modules/vm-guest.nix
     ../../modules/voip
   ];
 
@@ -153,8 +152,6 @@
     };
   };
 
-  deployment.targetHost = "telefonmann";
-
   # Age-encrypted secrets (decrypted on the host at activation time).
   age.secrets =
     let asteriskSecret = file: { inherit file; owner = "asterisk"; group = "voip-keys"; mode = "0640"; };

hosts/telefonmann/hardware.nix

@@ -1,6 +1,9 @@
-{ modulesPath, ... }: {
+{ ... }: {
-  imports = [ (modulesPath + "/profiles/qemu-guest.nix") ];
+  services.qemuGuest.enable = true;
-
+  boot.loader = {
+    systemd-boot.enable = true;
+    efi.canTouchEfiVariables = true;
+  };
   boot.initrd.availableKernelModules = [
     "virtio_pci"
     "virtio_scsi"  # use "virtio_blk" instead if disk is /dev/vda

modules/common.nix

@@ -1,4 +1,4 @@
-{ pkgs, ... }: {
+{ ... }: {
   time.timeZone = "Europe/Berlin";
 
   nix.settings = {

modules/vm-guest.nix

@@ -1,7 +0,0 @@
-{ ... }: {
-  services.qemuGuest.enable = true;
-  boot.loader = {
-    systemd-boot.enable = true;
-    efi.canTouchEfiVariables = true;
-  };
-}

modules/voip/asterisk.nix

@@ -172,7 +172,8 @@ let
     context = internal
     transport = transport-tcp
     disallow = all
-    ${lib.concatMapStrings (c: "allow = ${c}\n    ") cfg.codecs.hardwarePhones}direct_media = no
+    ${lib.concatMapStrings (c: "allow = ${c}\n    ") cfg.codecs.hardwarePhones}
+    direct_media = no
     trust_id_inbound = yes
     send_pai = yes
 
@@ -181,7 +182,8 @@ let
     context = internal
     transport = transport-tcp
     disallow = all
-    ${lib.concatMapStrings (c: "allow = ${c}\n    ") cfg.codecs.softClients}direct_media = no
+    ${lib.concatMapStrings (c: "allow = ${c}\n    ") cfg.codecs.softClients}
+    direct_media = no
     send_pai = yes
 
     [auth-userpass](!)
@@ -245,7 +247,6 @@ let
     type = endpoint
     context = from-external
     transport = transport-${t.transport}
-    disallow = all
     outbound_auth = trunk-${name}-auth
     aors = trunk-${name}-aor
     trust_id_inbound = yes

modules/voip/default.nix

@@ -57,6 +57,10 @@ let
   greetingDirs      = import ./greetings.nix    { inherit lib pkgs cfg; };
   intercomEntries   = import ./intercom.nix     { inherit lib cfg models allPhones; };
   confFiles         = import ./asterisk.nix     { inherit lib cfg models allPhones intercomEntries mohDirs greetingDirs; };
+  directory         = import ./directory.nix    { inherit lib pkgs cfg allPhones intercomEntries; };
+  backgroundEntries = import ./backgrounds.nix  { inherit lib pkgs cfg models allPhones; };
+  provisioningRoot  = import ./provisioning.nix { inherit lib pkgs cfg models allPhones backgroundEntries; };
+  diagram           = import ./diagram.nix      { inherit lib pkgs cfg models allPhones intercomEntries; };
 
   # True when any *File option is set — Asterisk's execincludes=yes is required in that case.
   hasRuntimeSecrets =
@@ -81,11 +85,6 @@ let
     ngx.header.content_type = "text/html; charset=utf-8"
     ngx.print(html)
   '';
-  directory         = import ./directory.nix    { inherit lib pkgs cfg allPhones intercomEntries; };
-  backgroundEntries = import ./backgrounds.nix  { inherit lib pkgs cfg models allPhones; };
-  provisioningRoot  = import ./provisioning.nix { inherit lib pkgs cfg models allPhones backgroundEntries; };
-  diagram           = import ./diagram.nix      { inherit lib pkgs cfg models allPhones intercomEntries; };
-
   # Shared option set for a physical phone device.
   # isPersonPhone = true  → no extension/displayName fields (inherited from person)
   # isPersonPhone = false → includes extension and displayName

modules/voip/directory.nix

@@ -68,16 +68,8 @@ let
     </CiscoIPPhoneDirectory>
   '';
 
-  voicemailMenuXml = ''
-    <?xml version="1.0" encoding="UTF-8"?>
-    <CiscoIPPhoneExecute>
-     <ExecuteItem Priority="0" URL="Dial:*97"/>
-    </CiscoIPPhoneExecute>
-  '';
-
 in {
   menuFile      = pkgs.writeText "directory.xml"      menuXml;
   listFile      = pkgs.writeText "directory-list.xml" listXml;
   intercomFile  = pkgs.writeText "intercom.xml"       intercomXml;
-  voicemailFile = pkgs.writeText "voicemail.xml"      voicemailMenuXml;
 }