Disable turboboost.

It was causing problems (errors during build) while not providing much benefit for my use-cases.

ansible/roles/base/files/gitconfig_home

@@ -8,6 +8,7 @@
 	lg = log --color --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit
 	bh = log --oneline --branches=* --remotes=* --graph --decorate
 	amend = commit --amend --no-edit
+	authorcount = shortlog --summary --numbered --all --no-merges
 [core]
 	excludesfile = ~/.gitignore_global
 [commit]

ansible/roles/base/files/gitconfig_work

@@ -8,6 +8,7 @@
 	lg = log --color --graph --pretty=format:'%Cred%h%Creset -%C(yellow)%d%Creset %s %Cgreen(%cr) %C(bold blue)<%an>%Creset' --abbrev-commit
 	bh = log --oneline --branches=* --remotes=* --graph --decorate
 	amend = commit --amend --no-edit
+	authorcount = shortlog --summary --numbered --all --no-merges
 [core]
 	excludesfile = ~/.gitignore_global
 [commit]

nix/configuration/configuration.nix

@@ -16,6 +16,7 @@
     ./roles/boot
     ./roles/chromecast
     ./roles/chromium
+    ./roles/direnv
     ./roles/distributed_build
     ./roles/docker
     ./roles/ecc
@@ -52,6 +53,7 @@
     ./roles/reset
     ./roles/rpcs3
     ./roles/rust
+    ./roles/shadps4
     ./roles/shikane
     ./roles/shipwright
     ./roles/sm64ex
@@ -140,7 +142,9 @@
   nix.gc = lib.mkIf (!config.me.buildingIso) {
     # Runs nix-collect-garbage --delete-older-than 5d
     automatic = true;
-    randomizedDelaySec = "14m";
+    persistent = true;
+    dates = "monthly";
+    # randomizedDelaySec = "14m";
     options = "--delete-older-than 30d";
   };
   nix.settings.auto-optimise-store = !config.me.buildingIso;
@@ -169,7 +173,7 @@
     pciutils # for lspci
     ripgrep
     strace
-    ltrace
+    # ltrace # Disabled because it uses more than 48GB of /tmp space during test phase.
     trace-cmd # ftrace
     tcpdump
     git-crypt

nix/configuration/flake.lock

@@ -39,11 +39,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1746729224,
-        "narHash": "sha256-9R4sOLAK1w3Bq54H3XOJogdc7a6C2bLLmatOQ+5pf5w=",
+        "lastModified": 1750903843,
+        "narHash": "sha256-Ng9+f0H5/dW+mq/XOKvB9uwvGbsuiiO6HrPdAcVglCs=",
         "owner": "nix-community",
         "repo": "disko",
-        "rev": "85555d27ded84604ad6657ecca255a03fd878607",
+        "rev": "83c4da299c1d7d300f8c6fd3a72ac46cb0d59aae",
         "type": "github"
       },
       "original": {
@@ -154,11 +154,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1746981801,
-        "narHash": "sha256-+Bfr0KqZV6gZdA7e2kupeoawozaLIHLuiPtC54uxbFc=",
+        "lastModified": 1751549056,
+        "narHash": "sha256-miKaJ4SFNxhZ/WVDADae2jNd9zka5bV9hKmXspAzvxo=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "ff915842e4a2e63c4c8c5c08c6870b9d5b3c3ee9",
+        "rev": "1fa73bb2cc39e250eb01e511ae6ac83bfbf9f38c",
         "type": "github"
       },
       "original": {
@@ -210,11 +210,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1746663147,
-        "narHash": "sha256-Ua0drDHawlzNqJnclTJGf87dBmaO/tn7iZ+TCkTRpRc=",
+        "lastModified": 1751271578,
+        "narHash": "sha256-P/SQmKDu06x8yv7i0s8bvnnuJYkxVGBWLWHaU+tt4YY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "dda3dcd3fe03e991015e9a74b22d35950f264a54",
+        "rev": "3016b4b15d13f3089db8a41ef937b13a9e33a8df",
         "type": "github"
       },
       "original": {
@@ -224,19 +224,19 @@
         "type": "github"
       }
     },
-    "nixpkgs-b93b4e9b5": {
+    "nixpkgs-dda3dcd3f": {
       "locked": {
-        "lastModified": 1713721570,
-        "narHash": "sha256-R0s+O5UjTePQRb72XPgtkTmEiOOW8n+1q9Gxt/OJnKU=",
+        "lastModified": 1746663147,
+        "narHash": "sha256-Ua0drDHawlzNqJnclTJGf87dBmaO/tn7iZ+TCkTRpRc=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "b93b4e9b527904aadf52dba6ca35efde2067cbd4",
+        "rev": "dda3dcd3fe03e991015e9a74b22d35950f264a54",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "b93b4e9b527904aadf52dba6ca35efde2067cbd4",
+        "rev": "dda3dcd3fe03e991015e9a74b22d35950f264a54",
         "type": "github"
       }
     },
@@ -258,11 +258,11 @@
     },
     "nixpkgs-unoptimized": {
       "locked": {
-        "lastModified": 1746663147,
-        "narHash": "sha256-Ua0drDHawlzNqJnclTJGf87dBmaO/tn7iZ+TCkTRpRc=",
+        "lastModified": 1751271578,
+        "narHash": "sha256-P/SQmKDu06x8yv7i0s8bvnnuJYkxVGBWLWHaU+tt4YY=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "dda3dcd3fe03e991015e9a74b22d35950f264a54",
+        "rev": "3016b4b15d13f3089db8a41ef937b13a9e33a8df",
         "type": "github"
       },
       "original": {
@@ -307,7 +307,7 @@
         "impermanence": "impermanence",
         "lanzaboote": "lanzaboote",
         "nixpkgs": "nixpkgs",
-        "nixpkgs-b93b4e9b5": "nixpkgs-b93b4e9b5",
+        "nixpkgs-dda3dcd3f": "nixpkgs-dda3dcd3f",
         "nixpkgs-unoptimized": "nixpkgs-unoptimized",
         "zsh-histdb": "zsh-histdb"
       }

nix/configuration/flake.nix

@@ -43,7 +43,7 @@
   inputs = {
     impermanence.url = "github:nix-community/impermanence";
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
-    nixpkgs-b93b4e9b5.url = "github:NixOS/nixpkgs/b93b4e9b527904aadf52dba6ca35efde2067cbd4";
+    nixpkgs-dda3dcd3f.url = "github:NixOS/nixpkgs/dda3dcd3fe03e991015e9a74b22d35950f264a54";
     nixpkgs-unoptimized.url = "github:NixOS/nixpkgs/nixos-unstable";
     home-manager.url = "github:nix-community/home-manager";
     home-manager.inputs.nixpkgs.follows = "nixpkgs";
@@ -76,7 +76,7 @@
       self,
       nixpkgs,
       nixpkgs-unoptimized,
-      nixpkgs-b93b4e9b5,
+      nixpkgs-dda3dcd3f,
       impermanence,
       home-manager,
       lanzaboote,
@@ -88,7 +88,7 @@
       base_x86_64_linux = rec {
         system = "x86_64-linux";
         specialArgs = {
-          pkgs-b93b4e9b5 = import nixpkgs-b93b4e9b5 {
+          pkgs-dda3dcd3f = import nixpkgs-dda3dcd3f {
             inherit system;
           };
           pkgs-unoptimized = import nixpkgs-unoptimized {

nix/configuration/hosts/odo/default.nix

@@ -64,6 +64,7 @@
   me.bluetooth.enable = true;
   me.chromecast.enable = true;
   me.chromium.enable = true;
+  me.direnv.enable = true;
   me.docker.enable = true;
   me.ecc.enable = true;
   me.emacs_flavor = "full";
@@ -88,6 +89,7 @@
   me.qemu.enable = true;
   me.rpcs3.enable = true;
   me.rust.enable = true;
+  me.shadps4.enable = true;
   me.shikane.enable = true;
   me.sops.enable = true;
   me.sound.enable = true;

nix/configuration/hosts/odo/power_management.nix

@@ -47,6 +47,22 @@
     "w- /sys/devices/system/cpu/cpufreq/policy13/energy_performance_preference - - - - power"
     "w- /sys/devices/system/cpu/cpufreq/policy14/energy_performance_preference - - - - power"
     "w- /sys/devices/system/cpu/cpufreq/policy15/energy_performance_preference - - - - power"
+    "w- /sys/devices/system/cpu/cpu0/cpufreq/boost - - - - 0"
+    "w- /sys/devices/system/cpu/cpu1/cpufreq/boost - - - - 0"
+    "w- /sys/devices/system/cpu/cpu2/cpufreq/boost - - - - 0"
+    "w- /sys/devices/system/cpu/cpu3/cpufreq/boost - - - - 0"
+    "w- /sys/devices/system/cpu/cpu4/cpufreq/boost - - - - 0"
+    "w- /sys/devices/system/cpu/cpu5/cpufreq/boost - - - - 0"
+    "w- /sys/devices/system/cpu/cpu6/cpufreq/boost - - - - 0"
+    "w- /sys/devices/system/cpu/cpu7/cpufreq/boost - - - - 0"
+    "w- /sys/devices/system/cpu/cpu8/cpufreq/boost - - - - 0"
+    "w- /sys/devices/system/cpu/cpu9/cpufreq/boost - - - - 0"
+    "w- /sys/devices/system/cpu/cpu10/cpufreq/boost - - - - 0"
+    "w- /sys/devices/system/cpu/cpu11/cpufreq/boost - - - - 0"
+    "w- /sys/devices/system/cpu/cpu12/cpufreq/boost - - - - 0"
+    "w- /sys/devices/system/cpu/cpu13/cpufreq/boost - - - - 0"
+    "w- /sys/devices/system/cpu/cpu14/cpufreq/boost - - - - 0"
+    "w- /sys/devices/system/cpu/cpu15/cpufreq/boost - - - - 0"
   ];
 
   boot.extraModprobeConfig = ''

nix/configuration/hosts/quark/default.nix

@@ -59,6 +59,7 @@
     me.bluetooth.enable = true;
     me.chromecast.enable = true;
     me.chromium.enable = true;
+    me.direnv.enable = true;
     me.docker.enable = true;
     me.ecc.enable = true;
     me.emacs_flavor = "full";
@@ -84,6 +85,7 @@
     me.qemu.enable = true;
     me.rpcs3.enable = true;
     me.rust.enable = true;
+    me.shadps4.enable = true;
     me.shikane.enable = true;
     me.sops.enable = true;
     me.sound.enable = true;

nix/configuration/roles/chromium/default.nix

@@ -22,7 +22,7 @@
       { }
       (lib.mkIf config.me.graphical {
         environment.systemPackages = with pkgs; [
-          (chromium.override { enableWideVine = true; })
+          chromium
         ];
         allowedUnfree = [
           "chromium"
@@ -57,8 +57,18 @@
           };
         };
 
-        # Enabling vulkan causes video to render as white
-        # nixpkgs.config.chromium.commandLineArgs = "--enable-features=Vulkan";
+        nixpkgs.overlays = [
+          (final: prev: {
+            chromium = prev.chromium.override {
+              enableWideVine = true;
+              commandLineArgs = [
+                "--enable-features=VaapiVideoDecoder,VaapiIgnoreDriverChecks,Vulkan,DefaultANGLEVulkan,VulkanFromANGLE,AcceleratedVideoEncoder"
+                # Enabling vulkan causes video to render as white
+                # "--enable-features=Vulkan";
+              ];
+            };
+          })
+        ];
       })
     ]
   );

nix/configuration/roles/direnv/default.nix

@@ -0,0 +1,55 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  direnv_zsh_hook = pkgs.writeTextFile {
+    name = "direnv_zsh_hook.zsh";
+    text = ''
+      eval "$(direnv hook zsh)"
+    '';
+  };
+in
+{
+  imports = [ ];
+
+  options.me = {
+    direnv.enable = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      example = true;
+      description = "Whether we want to install direnv.";
+    };
+  };
+
+  config = lib.mkIf config.me.direnv.enable (
+    lib.mkMerge [
+      {
+        environment.systemPackages = with pkgs; [
+          direnv
+          nix-direnv
+        ];
+
+        me.zsh.includes = [ direnv_zsh_hook ];
+
+        environment.persistence."/persist" = lib.mkIf (!config.me.buildingIso) {
+          hideMounts = true;
+          users.talexander = {
+            directories = [
+              {
+                # List of allowed directories from `direnv allow`.
+                directory = ".local/share/direnv";
+                user = "talexander";
+                group = "talexander";
+                mode = "0755";
+              }
+            ];
+          };
+        };
+      }
+    ]
+  );
+}

nix/configuration/roles/emacs/default.nix

@@ -131,8 +131,9 @@ in
                     final.cmake-language-server
                     final.cmake # Used by cmake-language-server
                     final.rust-analyzer
-                    final.nodePackages_latest.prettier # Format yaml, json, and JS
+                    final.prettier # Format yaml, json, and JS
                     final.terraform-ls
+                    final.typescript-language-server
                   ]
                 }
               '';

nix/configuration/roles/emacs/files/emacs/elisp/lang-javascript.el

@@ -1,6 +1,12 @@
 (require 'common-lsp)
 (require 'util-tree-sitter)
 
+(defun js-format-buffer ()
+  "Run prettier."
+  (interactive)
+  (run-command-on-buffer "prettier" "--stdin-filepath" buffer-file-name)
+  )
+
 (use-package json-ts-mode
   :ensure nil
   :pin manual
@@ -113,10 +119,14 @@
          ("\\.js\\'" . js-ts-mode)
          )
   :commands (js-ts-mode)
+  :custom (
+           (js-indent-level 2)
+           )
   :hook (
          (js-ts-mode . (lambda ()
                                  (when-linux
                                    (eglot-ensure)
+                                   (add-hook 'before-save-hook 'js-format-buffer nil 'local)
                                    )
                                  ))
          )

nix/configuration/roles/emacs/files/emacs/elisp/lang-rust.el

@@ -46,7 +46,7 @@
                              (when rust-analyzer-command
                                ;; (add-to-list 'eglot-server-programs `(rust-ts-mode . (,rust-analyzer-command)))
                                (add-to-list 'eglot-server-programs `(rust-ts-mode . (,rust-analyzer-command :initializationOptions (:imports (:granularity (:enforce t :group "item")
-                                                                                                                                                           :merge (:glob nil)
+                                                                                                                                                           :merge (:glob :json-false)
                                                                                                                                                            :prefix "self")
                                                                                                                                              ))))
                                )

nix/configuration/roles/git/default.nix

@@ -5,6 +5,18 @@
   ...
 }:
 
+let
+  git_wrapped =
+    package: prog:
+    pkgs.writeShellScriptBin "${prog}" ''
+      export PATH="${
+        lib.makeBinPath [
+          pkgs.meld
+        ]
+      }:$PATH"
+      exec ${package}/bin/${prog} "''${@}"
+    '';
+in
 {
   imports = [ ];
 
@@ -20,7 +32,7 @@
   config = lib.mkMerge [
     {
       environment.systemPackages = with pkgs; [
-        git
+        my_git
       ];
     }
     (lib.mkIf (config.me.git.config != null) {
@@ -32,54 +44,38 @@
           };
         };
     })
-    # (lib.mkIf (config.me.graphical) {
-    #   nixpkgs.overlays = [
-    #     (final: prev: {
-    #       git = pkgs.buildEnv {
-    #         name = prev.git.name;
-    #         paths = [
-    #           prev.git
-    #         ];
-    #         extraOutputsToInstall = [
-    #           "man"
-    #           "doc"
-    #           "info"
-    #         ];
-    #         buildInputs = [ final.makeWrapper ];
-    #         postBuild = ''
-    #           wrapProgram $out/bin/git --prefix PATH : ${
-    #             lib.makeBinPath [
-    #               final.meld
-    #             ]
-    #           }
-    #         '';
-    #       };
-    #     })
-    #   ];
-    # })
-    # (lib.mkIf (!config.me.graphical) {
-    #   nixpkgs.overlays = [
-    #     (final: prev: {
-    #       git = pkgs.buildEnv {
-    #         name = prev.git.name;
-    #         paths = [
-    #           prev.git
-    #         ];
-    #         extraOutputsToInstall = [
-    #           "man"
-    #           "doc"
-    #           "info"
-    #         ];
-    #         buildInputs = [ final.makeWrapper ];
-    #         postBuild = ''
-    #           wrapProgram $out/bin/git --prefix PATH : ${
-    #             lib.makeBinPath [
-    #             ]
-    #           }
-    #         '';
-    #       };
-    #     })
-    #   ];
-    # })
+    (lib.mkIf (config.me.graphical) {
+      nixpkgs.overlays = [
+        (final: prev: {
+          my_git = (
+            pkgs.buildEnv {
+              name = prev.git.name;
+              version = prev.git.version;
+              paths =
+                (builtins.map (git_wrapped prev.git) [
+                  "git"
+                ])
+                ++ [
+                  prev.git
+                ];
+              extraOutputsToInstall = [
+                "man"
+                "doc"
+                "info"
+              ];
+              nativeBuildInputs = [ final.makeWrapper ];
+              ignoreCollisions = true;
+            }
+          );
+        })
+      ];
+    })
+    (lib.mkIf (!config.me.graphical) {
+      nixpkgs.overlays = [
+        (final: prev: {
+          my_git = prev.git;
+        })
+      ];
+    })
   ];
 }

nix/configuration/roles/git/files/gitconfig_home

@@ -50,4 +50,5 @@
 [rebase]
 	autoSquash = true
 	autoStash = true
-	updateRefs = true
+        # updateRefs was annoying when you want to split a branch in two by rebasing away from commits from one branch and rebasing away some commits from another branch.
+	updateRefs = false

nix/configuration/roles/memtest86/default.nix

@@ -8,10 +8,14 @@
 {
   imports = [ ];
   config = lib.mkMerge [
-    { }
-    (lib.mkIf (config.me.buildingIso) {
-      # boot.loader.systemd-boot.memtest86.enable = true;
-      boot.loader.grub.memtest86.enable = true;
-    })
+    {
+      environment.systemPackages = with pkgs; [
+        memtest86plus
+      ];
+    }
+    # (lib.mkIf (config.me.buildingIso) {
+    #   boot.loader.systemd-boot.memtest86.enable = true;
+    #   boot.loader.grub.memtest86.enable = true;
+    # })
   ];
 }

nix/configuration/roles/network/default.nix

@@ -2,6 +2,7 @@
   config,
   lib,
   pkgs,
+  pkgs-dda3dcd3f,
   ...
 }:
 
@@ -64,6 +65,7 @@
     ldns # for drill
     arp-scan # To find devices on the network
     wavemon
+    dhcpcd # For Android USB tethering.
   ];
 
   boot.extraModprobeConfig = ''
@@ -91,4 +93,13 @@
     # This is enabled by default in nixos.
     # "net.ipv6.conf.default.use_tempaddr" = 2;
   };
+
+  nixpkgs.overlays = [
+    (final: prev: {
+      inherit (pkgs-dda3dcd3f)
+        linux-firmware
+        ;
+    })
+  ];
+
 }

nix/configuration/roles/optimized_build/default.nix

@@ -47,7 +47,7 @@
     (lib.mkIf (!config.me.optimizations.enable) (
       lib.mkMerge [
         {
-          boot.kernelPackages = pkgs.linuxPackagesFor pkgs.linux_6_14;
+          boot.kernelPackages = pkgs.linuxPackagesFor pkgs.linux_6_15;
         }
       ]
     ))
@@ -94,7 +94,7 @@
                   HZ = lib.kernel.freeform "300";
                   HZ_300 = lib.kernel.yes;
                   HZ_1000 = lib.kernel.no;
-                } prev.linux_6_14;
+                } prev.linux_6_15;
               }
             )
             (final: prev: {
@@ -132,6 +132,7 @@
                 redis
                 valkey
                 nix-serve-ng
+                rapidjson
                 ;
             })
           ];

nix/configuration/roles/rpcs3/default.nix

@@ -79,6 +79,18 @@ in
             home.file.".config/rpcs3/GuiConfigs/CurrentSettings.ini" = {
               source = ./files/CurrentSettings.ini;
             };
+            home.file.".config/rpcs3/custom_configs/config_BLUS30443.yml" = {
+              # Demon's Souls per-game config.
+              source = ./files/config_BLUS30443.yml;
+            };
+            home.file.".config/rpcs3/patches/patch.yml" = {
+              # All of the available patches.
+              source = ./files/patch.yml;
+            };
+            home.file.".config/rpcs3/patch_config.yml" = {
+              # Patches that I have enabled.
+              source = ./files/patch_config.yml;
+            };
           };
 
         environment.persistence."/persist" = lib.mkIf (!config.me.buildingIso) {
@@ -146,6 +158,13 @@ in
                   mode = "0755";
                 };
               }
+              {
+                # Netplay (RPCN) config and credentials
+                file = ".config/rpcs3/rpcn.yml";
+                parentDirectory = {
+                  mode = "0755";
+                };
+              }
             ];
           };
         };
@@ -155,7 +174,6 @@ in
           users.talexander = {
             directories = [
               {
-                # Game saves
                 directory = ".cache/rpcs3";
                 user = "talexander";
                 group = "talexander";

nix/configuration/roles/rpcs3/files/config_BLUS30443.yml

@@ -0,0 +1,14 @@
+Core:
+  SPU Block Size: Safe
+Video:
+  Write Color Buffers: true
+  Minimum Scalable Dimension: 640
+Net:
+  Internet enabled: Connected
+  IP address: 0.0.0.0
+  Bind address: 0.0.0.0
+  DNS address: 8.8.8.8
+  IP swap list: "ds-eu-c.scej-online.jp=206.189.232.242&&ds-eu-g.scej-online.jp=206.189.232.242&&c.demons-souls.com=206.189.232.242&&g.demons-souls.com=206.189.232.242&&cmnap.scej-online.jp=206.189.232.242&&demons-souls.scej-online.jp=206.189.232.242"
+  UPNP Enabled: false
+  PSN status: RPCN
+  PSN Country: us

nix/configuration/roles/rpcs3/files/patch_config.yml

@@ -0,0 +1,6 @@
+PPU-83681f6110d33442329073b72b8dc88a2f677172:
+  Unlock FPS:
+    Demon's Souls:
+      BLUS30443:
+        01.00:
+          Enabled: true

nix/configuration/roles/rust/files/cargo_config.toml

@@ -1,12 +1,12 @@
-[target.x86_64-unknown-linux-gnu]
-rustflags = ["-C", "target-cpu=native", "-Zthreads=0"]
+# [target.x86_64-unknown-linux-gnu]
+# rustflags = ["-C", "target-cpu=native", "-Zthreads=0"]
 
-[unstable]
-codegen-backend = true
+# [unstable]
+# codegen-backend = true
 
-[profile.dev]
-codegen-backend = "cranelift"
+# [profile.dev]
+# codegen-backend = "cranelift"
 
 [profile.dev.package."*"]
-codegen-backend = "llvm"
+# codegen-backend = "llvm"
 opt-level = 3

nix/configuration/roles/shadps4/default.nix

@@ -0,0 +1,112 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+{
+  imports = [ ];
+
+  options.me = {
+    shadps4.enable = lib.mkOption {
+      type = lib.types.bool;
+      default = false;
+      example = true;
+      description = "Whether we want to install shadps4.";
+    };
+  };
+
+  config = lib.mkIf config.me.shadps4.enable (
+    lib.mkMerge [
+      (lib.mkIf config.me.graphical {
+        environment.systemPackages = with pkgs; [
+          shadps4
+        ];
+
+        home-manager.users.talexander =
+          { pkgs, ... }:
+          {
+            home.file.".local/share/shadPS4/config.toml" = {
+              source = ./files/config.toml;
+            };
+          };
+
+        environment.persistence."/persist" = lib.mkIf (!config.me.buildingIso) {
+          hideMounts = true;
+          users.talexander = {
+            directories = [
+              {
+                # Location of ROMs.
+                directory = ".local/share/shadPS4/games";
+                user = "talexander";
+                group = "talexander";
+                mode = "0755";
+              }
+              {
+                # Firmware.
+                directory = ".local/share/shadPS4/sys_modules";
+                user = "talexander";
+                group = "talexander";
+                mode = "0755";
+              }
+              {
+                # Game saves.
+                directory = ".local/share/shadPS4/savedata";
+                user = "talexander";
+                group = "talexander";
+                mode = "0755";
+              }
+              {
+                # DLC.
+                directory = ".local/share/shadPS4/addcont";
+                user = "talexander";
+                group = "talexander";
+                mode = "0755";
+              }
+            ];
+            files = [
+              {
+                # play times and recently played
+                file = ".local/share/shadPS4/play_time.txt";
+                parentDirectory = {
+                  mode = "0755";
+                };
+              }
+            ];
+          };
+        };
+
+        environment.persistence."/state" = lib.mkIf (!config.me.buildingIso) {
+          hideMounts = true;
+          users.talexander = {
+            directories = [
+              {
+                # Cache.
+                directory = ".local/share/shadPS4/data";
+                user = "talexander";
+                group = "talexander";
+                mode = "0755";
+              }
+            ];
+          };
+        };
+
+        nixpkgs.overlays = [
+          (final: prev: {
+            shadps4 = prev.shadps4.overrideAttrs (old: {
+              version = "0.9.0";
+              src = final.fetchFromGitHub {
+                owner = "AzaharPlus";
+                repo = "shadPS4Plus";
+                tag = "SHADPS4PLUS_0_9_0_A";
+                hash = "sha256-ZwP+bOE4roWt51Ii53blDZzdq/SxK4Q69I4rLCNARLA=";
+                fetchSubmodules = true;
+              };
+            });
+          })
+        ];
+      })
+    ]
+  );
+}

nix/configuration/roles/shadps4/files/config.toml

@@ -0,0 +1,15 @@
+[General]
+# Without this, we get:
+# /run/current-system/sw/bin/xdg-mime: line 1002: /nix/store/wd9bigydk9x8bsvnslrvb5klbgmh98v5-hm_mimeapps.list.new: Read-only file system
+enableDiscordRPC = false
+
+
+[GUI]
+addonInstallDir = "/home/talexander/.local/share/shadPS4/addcont"
+installDirs = ["/home/talexander/.local/share/shadPS4/games"]
+installDirsEnabled = [true]
+# Without the geometry settings shadps4 crashes instantly with a floating point error.
+geometry_h = 981
+geometry_w = 748
+geometry_x = 0
+geometry_y = 0

nix/configuration/roles/zsh/default.nix

@@ -49,6 +49,8 @@ let
 
       source ${pkgs.zsh-histdb}/share/zsh/plugins/zsh-histdb/histdb-interactive.zsh
       bindkey '^r' _histdb-isearch
+
+      ${lib.concatMapStringsSep "\n" (item: "source ${item}") config.me.zsh.includes}
     '';
   };
 in
@@ -62,6 +64,16 @@ in
       example = true;
       description = "Whether we want to install zsh.";
     };
+    zsh.includes = lib.mkOption {
+      type = lib.types.listOf lib.types.package;
+      default = [ ];
+      example = lib.literalExpression ''
+        [ (pkgs.writeTextFile {
+            name = "launch-kanshi.conf";
+            text = "exec kanshi";
+          }) ]'';
+      description = "List of zshrc files to import.";
+    };
   };
 
   config = lib.mkIf config.me.zsh.enable (