Remote builds using boss-baby, Plasma beta, enable btrfs zstd compression

configuration.nix

@@ -6,6 +6,7 @@
   config,
   lib,
   pkgs,
+  pkgs-plasma-beta,
   ...
 }:
 
@@ -15,11 +16,33 @@
     ./hardware-configuration.nix
   ];
 
-  nix.settings.experimental-features = [
-    "nix-command"
-    "flakes"
+  nixpkgs.overlays = [
+    (self: super: {
+      kdePackages = pkgs-plasma-beta.kdePackages;
+    })
   ];
 
+  nix = {
+    settings = {
+      experimental-features = [
+        "nix-command"
+        "flakes"
+      ];
+      builders-use-substitutes = true;
+      max-jobs = 0;
+    };
+    distributedBuilds = true;
+    buildMachines = [
+      {
+        hostName = "boss-baby";
+        sshUser = "root";
+        protocol = "ssh-ng";
+        system = pkgs.stdenv.hostPlatform.system;
+        maxJobs = 4;
+      }
+    ];
+  };
+
   boot = {
     loader = {
       # Use the systemd-boot EFI boot loader.
@@ -31,6 +54,10 @@
     kernelPackages = pkgs.linuxPackages_latest;
   };
 
+  fileSystems."/".options = [
+    "compress=zstd"
+  ];
+
   networking = {
     hostName = "chromatic-aberration";
     networkmanager.enable = true;

flake.lock

@@ -16,9 +16,26 @@
         "type": "github"
       }
     },
+    "nixpkgs-plasma-beta": {
+      "locked": {
+        "lastModified": 1758387133,
+        "narHash": "sha256-Jr/ncxq/IaLkTsTvsqtYFIG5Qe3z8iLqoNKA66PnNas=",
+        "owner": "K900",
+        "repo": "nixpkgs",
+        "rev": "34c691bb97106f5236160b1a163025fcc78f6670",
+        "type": "github"
+      },
+      "original": {
+        "owner": "K900",
+        "ref": "plasma-6.5",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "nixpkgs-plasma-beta": "nixpkgs-plasma-beta"
       }
     }
   },

flake.nix

@@ -5,16 +5,24 @@
     # i.e. nixos-24.11
     # Use `nix flake update` to update the flake to the latest revision of the chosen release channel.
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    nixpkgs-plasma-beta.url = "github:K900/nixpkgs/plasma-6.5";
   };
   outputs =
-    inputs@{ self, nixpkgs, ... }:
+    inputs@{
+      self,
+      nixpkgs,
+      nixpkgs-plasma-beta,
+      ...
+    }:
     let
       system = "x86_64-linux";
       pkgs = import nixpkgs { inherit system; };
+      pkgs-plasma-beta = import nixpkgs-plasma-beta { inherit system; };
     in
     {
       nixosConfigurations.chromatic-aberration = nixpkgs.lib.nixosSystem {
         modules = [ ./configuration.nix ];
+        specialArgs.pkgs-plasma-beta = pkgs-plasma-beta;
       };
       formatter.${system} = pkgs.nixfmt-tree;
     };