nix/configurations.nix

@@ -7,14 +7,7 @@
 let
   inherit (lib) nixosSystem;
   inherit (lib.attrsets) mapAttrs;
-  inherit (cfg.lib.modules) forAllUsers';
   cfg = config.flake;
-  globalCfg = {
-    useGlobalPkgs = true;
-    useUserPackages = true;
-    sharedModules = [ cfg.modules.homeManager.default ];
-    users = forAllUsers' (name: _: cfg.homes.${name});
-  };
   hosts = cfg.manifest.hosts or { };
   mkConfigurations =
     class: hosts:
@@ -22,11 +15,13 @@ let
       name: value:
       if class == "nixos" then
         nixosSystem {
-          specialArgs.hostName = name;
+          specialArgs = {
+            inherit inputs;
+            inherit (cfg) manifest;
+            hostName = name;
+          };
           modules = [
             cfg.modules.nixos.default
-            inputs.home-manager.nixosModules.home-manager
-            { home-manager = globalCfg; }
             (value.extraCfg or { })
           ];
         }
@@ -35,6 +30,5 @@ let
     ) hosts;
 in
 {
-  imports = [ inputs.home-manager.flakeModules.home-manager ];
   flake.nixosConfigurations = mkConfigurations "nixos" hosts.nixos;
 }

nix/modules/home-manager.nix

@@ -0,0 +1,18 @@
+{ inputs, config, ... }:
+let
+  inherit (cfg.lib.modules) forAllUsers';
+  cfg = config.flake;
+  hm = inputs.home-manager;
+  globalCfg = {
+    useGlobalPkgs = true;
+    useUserPackages = true;
+    extraSpecialArgs = { inherit (cfg) manifest; };
+    sharedModules = [ cfg.modules.homeManager.default ];
+    users = forAllUsers' (name: _: cfg.homes.${name});
+  };
+in
+{
+  imports = [ hm.flakeModules.home-manager ];
+  flake.modules.nixos.default.imports = [ hm.nixosModules.home-manager ];
+  flake.modules.nixos.default.config.home-manager = globalCfg;
+}

nix/modules/machine/root.nix

@@ -1,100 +0,0 @@
-{
-  config,
-  lib,
-  inputs,
-  ...
-}:
-let
-  inherit (lib.modules) mkMerge mkIf mkAfter;
-in
-{
-  flake.modules.nixos.default =
-    { hostName, ... }:
-    let
-      inherit (config.flake.manifest.hosts.nixos.${hostName}.machine) root;
-    in
-    {
-      imports = [ inputs.disko.nixosModules.disko ];
-      config = mkMerge [
-        {
-          # BTRFS - may add more later on
-          boot.initrd.kernelModules = [ "dm-snapshot" ];
-          disko.devices.disk.main = {
-            device = root.drive;
-            content.type = "gpt";
-            content.partitions = {
-              boot = {
-                name = "boot";
-                size = "1M";
-                type = "EF02";
-              };
-              esp = {
-                name = "ESP";
-                size = "500M";
-                type = "EF00";
-                content = {
-                  type = "filesystem";
-                  format = "vfat";
-                  mountpoint = "/boot";
-                };
-              };
-              swap = {
-                size = "4G";
-                content = {
-                  type = "swap";
-                  resumeDevice = true;
-                };
-              };
-              root = {
-                name = "root";
-                size = "100%";
-                content = {
-                  type = "lvm_pv";
-                  vg = "root_vg";
-                };
-              };
-            };
-          };
-
-          disko.devices.lvm_vg.root_vg = {
-            type = "lvm_vg";
-            lvs.root = {
-              size = "100%FREE";
-              content = {
-                type = "btrfs";
-                extraArgs = [ "-f" ];
-                subvolumes = {
-                  "/root".mountpoint = "/";
-                  "/persist" = {
-                    mountpoint = "/persist";
-                    mountOptions = [
-                      "subvol=persist"
-                      "noatime"
-                    ];
-                  };
-                  "/nix" = {
-                    mountpoint = "/nix";
-                    mountOptions = [
-                      "subvol=nix"
-                      "noatime"
-                    ];
-                  };
-                };
-              };
-            };
-          };
-        }
-        # Ephemeral by default - assumes btrfs
-        (mkIf (config.flake.manifest.hosts.nixos.${hostName}.machine.root.ephemeral or true) {
-          boot.initrd.postDeviceCommands = mkAfter ''
-            mkdir /btrfs_tmp
-            mount /dev/root_vg/root /btrfs_tmp
-
-            if [[ -e /btrfs_tmp/root ]]; then
-              btrfs subvolume delete "/btrfs_tmp/root"
-            fi
-          '';
-        })
-      ];
-    };
-}

nix/modules/machine/root/drive.nix

@@ -0,0 +1,75 @@
+{ config, inputs, ... }:
+{
+  flake.modules.nixos.default =
+    { hostName, ... }:
+    {
+      imports = [ inputs.disko.nixosModules.disko ];
+      boot.initrd.kernelModules = [ "dm-snapshot" ];
+      # BTRFS - may add more later on
+      disko.devices.disk.main = {
+        device = config.flake.manifest.hosts.nixos.${hostName}.machine.root.drive;
+        type = "disk";
+        content.type = "gpt";
+        content.partitions = {
+          boot = {
+            name = "boot";
+            size = "1M";
+            type = "EF02";
+          };
+          esp = {
+            name = "ESP";
+            size = "500M";
+            type = "EF00";
+            content = {
+              type = "filesystem";
+              format = "vfat";
+              mountpoint = "/boot";
+            };
+          };
+          swap = {
+            size = "4G";
+            content = {
+              type = "swap";
+              resumeDevice = true;
+            };
+          };
+          root = {
+            name = "root";
+            size = "100%";
+            content = {
+              type = "lvm_pv";
+              vg = "root_vg";
+            };
+          };
+        };
+      };
+
+      disko.devices.lvm_vg.root_vg = {
+        type = "lvm_vg";
+        lvs.root = {
+          size = "100%FREE";
+          content = {
+            type = "btrfs";
+            extraArgs = [ "-f" ];
+            subvolumes = {
+              "/root".mountpoint = "/";
+              "/persist" = {
+                mountpoint = "/persist";
+                mountOptions = [
+                  "subvol=persist"
+                  "noatime"
+                ];
+              };
+              "/nix" = {
+                mountpoint = "/nix";
+                mountOptions = [
+                  "subvol=nix"
+                  "noatime"
+                ];
+              };
+            };
+          };
+        };
+      };
+    };
+}

nix/modules/machine/root/ephemeral.nix

@@ -0,0 +1,30 @@
+{ config, lib, ... }:
+let
+  inherit (lib.modules) mkMerge mkIf mkAfter;
+in
+{
+  flake.modules.nixos.default =
+    { hostName, ... }:
+    {
+      config = mkMerge [
+        # Ephemeral by default - assumes btrfs
+        (mkIf (config.flake.manifest.hosts.nixos.${hostName}.machine.root.ephemeral or true) {
+          boot.initrd.postDeviceCommands = mkAfter ''
+            mkdir /btrfs_tmp
+            mount /dev/root_vg/root /btrfs_tmp
+
+            if [[ -e /btrfs_tmp/root ]]; then
+              btrfs subvolume delete "/btrfs_tmp/root"
+            fi
+          '';
+          persistFiles = [
+            #TODO: move to ssh config
+            "/etc/ssh/ssh_host_ed25519_key"
+            "/etc/ssh/ssh_host_ed25519_key.pub"
+            "/etc/ssh/ssh_host_rsa_key"
+            "/etc/ssh/ssh_host_rsa_key.pub"
+          ];
+        })
+      ];
+    };
+}

nix/modules/ssh.nix

@@ -1,10 +0,0 @@
-{
-  flake.modules.nixos.default = {
-    persistFiles = [
-      "/etc/ssh/ssh_host_ed25519_key"
-      "/etc/ssh/ssh_host_ed25519_key.pub"
-      "/etc/ssh/ssh_host_rsa_key"
-      "/etc/ssh/ssh_host_rsa_key.pub"
-    ];
-  };
-}