ccache: use preprocessor mode; system76-scheduler: add osu! to games

pkgs/default.nix

@@ -337,11 +337,15 @@ rec {
     };
   };
   linuxPackages_bpiR3 = pkgs.linuxPackagesFor linux_bpiR3;
+  # there are few direct hits with the linux kernel, so use CCACHE_NODIRECT
+  # (direct hits are file-based, non-direct are preprocessed file-based)
   ccacheWrapper = pkgs.ccacheWrapper.override {
     extraConfig = ''
       export CCACHE_COMPRESS=1
       export CCACHE_DIR="/var/cache/ccache"
       export CCACHE_UMASK=007
+      export CCACHE_SLOPPINESS=include_file_mtime,time_macros
+      export CCACHE_NODIRECT=1
       if [ ! -d "$CCACHE_DIR" ]; then
         echo "====="
         echo "Directory '$CCACHE_DIR' does not exist"

system/hosts/nixmsi.nix

@@ -213,6 +213,9 @@ in {
   environment.etc."system76-scheduler/exceptions.ron".source =
     "${pkgs.system76-scheduler}/etc/system76-scheduler/exceptions.ron";*/
   services.system76-scheduler.enable = true;
+  services.system76-scheduler.assignments = {
+    games.matchers = [ "osu!" ];
+  };
 
   common.workstation = true;
   common.gettyAutologin = true;

system/modules/ccache.nix

@@ -15,6 +15,8 @@
           export CCACHE_COMPRESS=1
           export CCACHE_DIR="${config.programs.ccache.cacheDir}"
           export CCACHE_UMASK=007
+          export CCACHE_SLOPPINESS=include_file_mtime,time_macros
+          export CCACHE_NODIRECT=1
           if [ ! -d "$CCACHE_DIR" ]; then
             echo "====="
             echo "Directory '$CCACHE_DIR' does not exist"