System/flake.nix

{
  description = "Nathan's system configurations";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-22.05";
    nixpkgs-unstable.url = "github:NixOS/nixpkgs/nixos-unstable";
    nixos-hardware.url = "github:NixOS/nixos-hardware";
    home-manager = {
      url = "github:nix-community/home-manager/release-22.05";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    nix-on-droid = {
      url = "github:t184256/nix-on-droid";
      inputs = {
        nixpkgs.follows = "nixpkgs";
        home-manager.follows = "home-manager";
      };
    };
    flake-utils.url = "github:numtide/flake-utils";
    darwin = {
      url = "github:lnl7/nix-darwin/master";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    fenix = {
      url = "github:nix-community/fenix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    emacs = {
      url = "github:nix-community/emacs-overlay";
      inputs.nixpkgs.follows = "nixpkgs-unstable";
    };
    sops-nix = {
      url = "github:Mic92/sops-nix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    prismlauncher = {
      url = "github:PrismLauncher/PrismLauncher";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    java = {
      url = "github:nathans-flakes/java";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    quilt-server = {
      url = "github:forward-progress/quilt-server-nix-container";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    nixos-generators = {
      url = "github:nix-community/nixos-generators";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    wsl = {
      url = "github:nix-community/NixOS-WSL";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    gamescope = {
      url = "github:nathans-flakes/gamescope";
      inputs = {
        nixpkgs.follows = "nixpkgs";
        nixpkgs-unstable.follows = "nixpkgs-unstable";
      };
    };
    idris2 = {
      url = "github:idris-lang/idris2";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { self, nixpkgs, nixpkgs-unstable, flake-utils, nixos-hardware
    , fenix, emacs, sops-nix, home-manager, darwin, prismlauncher, java
    , quilt-server, nixos-generators, wsl, gamescope, nix-on-droid, idris2
    }@inputs:
    let
      makeNixosSystem =
        { system, hostName, extraModules ? [ ], ourNixpkgs ? nixpkgs }:
        ourNixpkgs.lib.nixosSystem {
          inherit system;
          specialArgs = { inputs = inputs; };
          modules = [
            sops-nix.nixosModules.sops
            home-manager.nixosModules.home-manager
            ./modules/linux/default.nix
            ({ pkgs, lib, config, ... }: {
              # Configure hostname
              networking = { hostName = hostName; };
              # Setup sops
              # Add default secrets
              sops = { age.sshKeyPaths = [ "/etc/ssh/ssh_host_ed25519_key" ]; };
              nixpkgs.config.allowUnfree = true;
              nixpkgs.config.allowUnfreePredicate = (pkg: true);
              # Home manager configuration
              home-manager = {
                useUserPackages = true;
                useGlobalPkgs = true;
                extraSpecialArgs = {
                  inputs = inputs;
                  nixosConfig = config;
                };
                sharedModules = [ ./home-manager/linux/default.nix ];
              };
            })
          ] ++ extraModules;
        };
      makeDarwinSystem = { system, extraModules ? [ ] }:
        darwin.lib.darwinSystem {
          inherit system;
          specialArgs = { inputs = inputs; };
          modules = [
            home-manager.darwinModules.home-manager
            ./modules/darwin/default.nix
            ({ pkgs, lib, config, ... }: {
              nixpkgs.config.allowUnfree = true;
              nixpkgs.config.allowUnfreePredicate = (pkg: true);
              # Home manager configuration
              home-manager = {
                useUserPackages = true;
                useGlobalPkgs = true;
                extraSpecialArgs = {
                  inputs = inputs;
                  nixosConfig = config;
                };
                sharedModules = [ ./home-manager/darwin/default.nix ];
              };
            })
          ] ++ extraModules;
        };
    in rec {
      # Real systems
      nixosConfigurations = {
        levitation = makeNixosSystem {
          system = "x86_64-linux";
          hostName = "levitation";
          extraModules = [
            ./hardware/levitation.nix
            ./machines/levitation/configuration.nix
          ];
        };

        oracles = makeNixosSystem {
          system = "x86_64-linux";
          hostName = "oracles";
          extraModules =
            [ ./hardware/oracles.nix ./machines/oracles/configuration.nix ];
        };

        matrix = makeNixosSystem {
          system = "x86_64-linux";
          hostName = "matrix";
          extraModules =
            [ ./hardware/matrix.nix ./machines/matrix/configuration.nix ];
        };

        tounge = makeNixosSystem {
          system = "aarch64-linux";
          hostName = "tounge";
          extraModules = [ ./machines/tounge/configuration.nix ];
        };

        x86vm = makeNixosSystem {
          system = "x86_64-linux";
          hostName = "x86vm";
          extraModules = [
            "${nixpkgs}/nixos/modules/profiles/qemu-guest.nix"
            "${nixpkgs}/nixos/modules/virtualisation/qemu-vm.nix"
            ./machines/x86vm/configuration.nix
          ];
        };

        # WSL sytem
        wsl = makeNixosSystem {
          system = "x86_64-linux";
          hostName = "wsl";
          extraModules =
            [ wsl.nixosModules.wsl ./machines/wsl/configuration.nix ];
        };
      };
      # Mac systems
      darwinConfigurations = {
        "extremophile" = makeDarwinSystem {
          system = "x86_64-darwin";
          extraModules = [ ./machines/extremophile/configuration.nix ];
        };
      };
      # Android systems
      nixOnDroidConfigurations = {
        tablet = nix-on-droid.lib.nixOnDroidConfiguration {
          config = ./machines/tablet/configuration.nix;
          system = "aarch64-linux";
          extraModules = [
            ./modules/nix-on-droid/default.nix
            ({ pkgs, lib, config, ... }: {
              # Home manager configuration
              home-manager = {
                useUserPackages = true;
                useGlobalPkgs = true;
                extraSpecialArgs = {
                  inputs = inputs;
                  nixosConfig = config;
                };
                sharedModules = [ ./home-manager/nix-on-droid/default.nix ];
              };
            })
          ];
        };
      };
      packages = {
        x86_64-linux = {
          # Hyper-V image
          hyperv = nixos-generators.nixosGenerate {
            pkgs = nixpkgs.legacyPackages.x86_64-linux;
            modules = [ ./machines/hyperv/configuration.nix ];
            format = "hyperv";
          };
        };
      };
    } // flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          # Special handling for discord, as it's unfree _and_ insecure!
          config = {
            allowUnfree = true;
            permittedInsecurePackages = [ "electron-13.6.9" ];
          };
        };
      in {
        packages = flake-utils.lib.flattenTree {
          discordWayland = pkgs.callPackage ./packages/discord/default.nix rec {
            pname = "discord-electron";
            binaryName = "Discord";
            desktopName = "Discord (Wayland)";
            version = "0.0.21";
            src = pkgs.fetchurl {
              url =
                "https://dl.discordapp.net/apps/linux/${version}/discord-${version}.tar.gz";
              hash = "sha256-KDKUssPRrs/D10s5GhJ23hctatQmyqd27xS9nU7iNaM=";
            };
            electron = pkgs.electron_13;
          };
          swayimg = pkgs.callPackage ./packages/swayimg/default.nix { };
        };
      });
}