Resolve all statix and nixpkgs-fmt warnings repo-wide

Zero W20 (repeated attribute keys), W10 (empty { ... }: variadic
pattern, use _: instead), and W04 (a = x.a instead of inherit)
warnings remain anywhere in the tree, and nixpkgs-fmt --check is
clean on all 46 .nix files.

Repeated-key merges go as deep as statix actually flags per file
(e.g. boot.loader.* nested under boot.loader = { ... } once the
outer boot.* merge exposed it as its own repeat) — every merge is a
pure attribute-path restructuring with no value changes, verified by
comparing config.system.build.toplevel.drvPath before/after for a
representative host per changed module plus a full 19-host + 4-package
eval sweep.

One indentation slip caught and fixed during this pass: nesting
modules/installer/common.nix's environment.etc."auto-install.sh".text
under an environment = { ... } block initially normalized the
script's shebang/set line indentation, which actually changes the
rendered file (Nix's '' string dedent treats it as real content, not
cosmetic whitespace) — reproduced the original's exact indentation
and reverified the rendered script is byte-identical to before.

modules/services/zfs/auto-mount-volumes.nix picked up formatting too;
worth noting it isn't imported by anything in this flake at all.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01La55Nsss8jZ7ZuzUV9mfot

hosts/nixos/home.nix

@@ -6,27 +6,72 @@
     ../../modules/common/aliases.nix
   ];
 
-  home.username = vars.primaryUser;
-  home.homeDirectory = "/home/${vars.primaryUser}";
-  home.stateVersion = "25.05"; # match your NixOS stateVersion
+  home = {
+    username = vars.primaryUser;
+    homeDirectory = "/home/${vars.primaryUser}";
+    stateVersion = "25.05"; # match your NixOS stateVersion
+
+    # Optional: packages
+    packages = with pkgs; [
+      git
+      vim
+      tmux
+      nextcloud-client
+      #    vscode
+      chromium
+    ];
+
+    # Optional: set environment vars
+    sessionVariables = {
+      EDITOR = "vim";
+    };
+
+    file = {
+      ".local/share/applications/proxmox-chromium-app.desktop".text = ''
+        [Desktop Entry]
+        Type=Application
+        Name=Proxmox (Chromium)
+        Exec=chromium --app=https://pve.${vars.homeDomain}:${toString vars.pveWebPort} --window-size=1920,1080 --window-position=0,0
+        Icon=${config.home.homeDirectory}/.local/share/icons/proxmox.png
+        Terminal=false
+        Categories=Hypervisor;
+        StartupWMClass=PVE
+      '';
+      ".local/share/applications/pbs-chromium-app.desktop".text = ''
+        [Desktop Entry]
+        Type=Application
+        Name=Proxmox Backup Server (Chromium)
+        Exec=chromium --app=https://${vars.pbsIp}:${toString vars.pbsWebPort} --window-size=1920,1080 --window-position=0,0
+        Icon=${config.home.homeDirectory}/.local/share/icons/proxmox.png
+        Terminal=false
+        Categories=backup;
+
+      '';
+      ".local/share/applications/proxmox-firefox-app.desktop".text = ''
+        [Desktop Entry]
+        Type=Application
+        Name=Proxmox (Firefox)
+        Exec=firefox --new-instance https://pve.${vars.homeDomain}:${toString vars.pveWebPort} --profile ProxmoxWebApp --window-size=1920,1080 --class ProxmoxWebApp
+        Icon=${config.home.homeDirectory}/.local/share/icons/proxmox.png
+        Terminal=false
+        Categories=Hypervisor;
+        StartupWMClass=PVE
+      '';
+      ".local/share/applications/pbs-firefox-app.desktop".text = ''
+        [Desktop Entry]
+        Type=Application
+        Name=Proxmox Backup Server (Firefox)
+        Exec=firefox --new-window https://${vars.pbsIp}:${toString vars.pbsWebPort} --profile PbsWebApp --window-size=1920,1080 --class PbsWebApp
+        Icon=${config.home.homeDirectory}/.local/share/icons/proxmox.png
+        Terminal=false
+        Categories=backup;
+        StartupWMClass=PBS
+      '';
+    };
+  };
 
   programs.home-manager.enable = true; # mandatory to activate HM
 
-  # Optional: packages
-  home.packages = with pkgs; [
-    git
-    vim
-    tmux
-    nextcloud-client
-    #    vscode
-    chromium
-  ];
-
-  # Optional: set environment vars
-  home.sessionVariables = {
-    EDITOR = "vim";
-  };
-
   # Optional: enable bash (or zsh, fish...)
   programs.bash.enable = true;
   services.nextcloud-client = {
@@ -34,46 +79,4 @@
     # Optionally start in background directly
     startInBackground = true;
   };
-  home.file = {
-    ".local/share/applications/proxmox-chromium-app.desktop".text = ''
-      [Desktop Entry]
-      Type=Application
-      Name=Proxmox (Chromium)
-      Exec=chromium --app=https://pve.${vars.homeDomain}:${toString vars.pveWebPort} --window-size=1920,1080 --window-position=0,0
-      Icon=${config.home.homeDirectory}/.local/share/icons/proxmox.png
-      Terminal=false
-      Categories=Hypervisor;
-      StartupWMClass=PVE
-    '';
-    ".local/share/applications/pbs-chromium-app.desktop".text = ''
-      [Desktop Entry]
-      Type=Application
-      Name=Proxmox Backup Server (Chromium)
-      Exec=chromium --app=https://${vars.pbsIp}:${toString vars.pbsWebPort} --window-size=1920,1080 --window-position=0,0
-      Icon=${config.home.homeDirectory}/.local/share/icons/proxmox.png
-      Terminal=false
-      Categories=backup;
-
-    '';
-    ".local/share/applications/proxmox-firefox-app.desktop".text = ''
-      [Desktop Entry]
-      Type=Application
-      Name=Proxmox (Firefox)
-      Exec=firefox --new-instance https://pve.${vars.homeDomain}:${toString vars.pveWebPort} --profile ProxmoxWebApp --window-size=1920,1080 --class ProxmoxWebApp
-      Icon=${config.home.homeDirectory}/.local/share/icons/proxmox.png
-      Terminal=false
-      Categories=Hypervisor;
-      StartupWMClass=PVE
-    '';
-    ".local/share/applications/pbs-firefox-app.desktop".text = ''
-      [Desktop Entry]
-      Type=Application
-      Name=Proxmox Backup Server (Firefox)
-      Exec=firefox --new-window https://${vars.pbsIp}:${toString vars.pbsWebPort} --profile PbsWebApp --window-size=1920,1080 --class PbsWebApp
-      Icon=${config.home.homeDirectory}/.local/share/icons/proxmox.png
-      Terminal=false
-      Categories=backup;
-      StartupWMClass=PBS
-    '';
-  };
 }

hosts/nixos/host.nix

@@ -1,4 +1,4 @@
-{ ... }:
+_:
 
 {
   networking.hostName = "nixos";