Organize XDG declartions and VR tweaks

- Moved XDG declarations into xdg module
- Add NPM xdg declaration
- Add 50% foevation strength, for better stability with Beat Saber
- Note that NixOS/nixpkgs#350069 is now merged, waiting for it to move
into unstable hydra

flake.nix

@@ -78,7 +78,7 @@
     # Nixpkgs PRs
     # TODO: https://github.com/NixOS/nixpkgs/pull/216245
     nixpkgs-howdy.url = "github:fufexan/nixpkgs/howdy";
-    # TODO: https://github.com/NixOS/nixpkgs/pull/350069
+    # TODO: Waiting til https://github.com/NixOS/nixpkgs/pull/350069 is in unstable
     nixpkgs-wivrn.url = "github:PassiveLemon/nixpkgs/wivrn-update";
     # TODO: BSManager testing
     nixpkgs-bsmanager.url = "github:Mistyttm/nixpkgs/add-bs-manager";

hosts/ryzennova/configuration.nix

@@ -89,6 +89,9 @@
   services.wivrn.config.json = {
     # 50 Mb/s, default setting and seems to be the best for Beat Saber
     bitrate = 50 * 1000000;
+    # 0.5x (50%) foveation scaling, don't need it super high because it makes latency higher (which is bad for Beat Saber)
+    # Lower value means higher foveation
+    scale = 0.5;
     encoders = [
       {
         encoder = "nvenc";

modules/core/home-manager.nix

@@ -86,13 +86,7 @@ in
 
       sessionVariables = {
         FLAKE = "${hm-config.home.homeDirectory}/Documents/NixConfig";
-        XDG_BIN_HOME = "${hm-config.home.homeDirectory}/.local/bin";
-
-        ANDROID_USER_HOME = "${hm-config.xdg.dataHome}/android";
-        CUDA_CACHE_PATH = "${hm-config.xdg.cacheHome}/nv";
-        TLDR_CACHE_DIR = "${hm-config.xdg.cacheHome}/tldr";
       };
-      sessionPath = ["${hm-config.home.sessionVariables.XDG_BIN_HOME}"];
-      shellAliases.wget = ''wget --hsts-file="${hm-config.xdg.dataHome}/wget-hsts"'';
+      sessionPath = ["${config.environment.sessionVariables.XDG_BIN_HOME}"];
     };
   }

modules/core/xdg.nix

@@ -1,16 +1,32 @@
 {
   config,
   lib,
+  pkgs,
   ...
-}: {
+}: let
+  hm-config = config.hm;
+in {
   environment.sessionVariables = {
     XDG_CACHE_HOME = "$HOME/.cache";
     XDG_CONFIG_HOME = "$HOME/.config";
     XDG_DATA_HOME = "$HOME/.local/share";
     XDG_STATE_HOME = "$HOME/.local/state";
+    XDG_BIN_HOME = "$HOME/.local/bin";
 
     ANDROID_USER_HOME = "$XDG_DATA_HOME/android";
     CUDA_CACHE_PATH = "$XDG_CACHE_HOME/nv";
     TLDR_CACHE_DIR = "$XDG_CACHE_HOME/tldr";
+    NPM_CONFIG_USERCONFIG = "$XDG_CONFIG_HOME/npm/npmrc";
   };
+
+  home.shellAliases = {
+    wget = ''wget --hsts-file="$XDG_DATA_HOME/wget-hsts"'';
+  };
+
+  create.configFile."npm/npmrc".text = ''
+    prefix=${hm-config.xdg.dataHome}/npm
+    cache=${hm-config.xdg.cacheHome}/npm
+    tmp=$XDG_RUNTIME_DIR/npm
+    init-module=${hm-config.xdg.configHome}/npm/config/npm-init.js
+  '';
 }