init cachy kernel

packages/linux-cachyos/lib/kconfig-to-nix.nix

@@ -0,0 +1,11 @@
+{ runCommand, configfile }:
+# taken from <nixpkgs>/pkgs/os-specific/linux/kernel/manual-config.nix
+runCommand "config.nix" { } ''
+  echo "{" > "$out"
+  while IFS='=' read key val; do
+    [ "x''${key#CONFIG_}" != "x$key" ] || continue
+    no_firstquote="''${val#\"}";
+    echo '  "'"$key"'" = "'"''${no_firstquote%\"}"'";' >> "$out"
+  done < "${configfile}"
+  echo "}" >> $out
+''

packages/linux-cachyos/lib/llvm-module-overlay.nix

@@ -0,0 +1,102 @@
+{ final, ... }:
+kernel: _finalModules: prevModules:
+
+let
+  # Helps when overriding both inputs and outputs attrs.
+  multiOverride = prev: newInputs: (prev.override newInputs).overrideAttrs;
+
+  # Helps replacing all the dependencies in a derivation.
+  overrideFull =
+    newScope: prev:
+    let
+      args = prev.override.__functionArgs;
+      names = builtins.filter (arg: builtins.hasAttr arg newScope) (builtins.attrNames args);
+      values = lib.attrsets.genAttrs names (arg: builtins.getAttr arg newScope);
+    in
+    prev.override values;
+
+  # Don't waste user's time.
+  markBroken =
+    drv:
+    drv.overrideAttrs (prevAttrs: {
+      meta = (prevAttrs.meta or { }) // {
+        broken = true;
+      };
+    });
+
+  fixNoVideo =
+    prevDrv:
+    prevDrv.overrideAttrs (prevAttrs: {
+      passthru = prevAttrs.passthru // {
+        settings = overrideFull (final // final.xorg) prevAttrs.passthru.settings;
+      };
+    });
+in
+with prevModules;
+{
+  evdi =
+    multiOverride prevModules.evdi
+      {
+        inherit (final) python3;
+      }
+      (prevAttrs: rec {
+        env = prevAttrs.env // {
+          CFLAGS = "";
+        };
+        makeFlags = prevAttrs.makeFlags ++ [
+          "CFLAGS=${
+            builtins.replaceStrings [ "discarded-qualifiers" ] [ "ignored-qualifiers" ] prevAttrs.env.CFLAGS
+          }"
+        ];
+        postPatch = ''
+          substituteInPlace Makefile \
+            --replace-fail 'discarded-qualifiers' 'ignored-qualifiers'
+        '';
+        # Don't build userspace stuff
+        postBuild = "";
+        installPhase =
+          builtins.replaceStrings [ "install -Dm755 library/libevdi.so" ] [ "#" ]
+            prevAttrs.installPhase;
+      });
+  nvidia_x11 = fixNoVideo nvidia_x11;
+  nvidia_x11_beta = fixNoVideo nvidia_x11_beta;
+  nvidia_x11_latest = fixNoVideo nvidia_x11_latest;
+  nvidia_x11_legacy535 = fixNoVideo nvidia_x11_legacy535;
+  nvidia_dc_535 = markBroken nvidia_dc_535;
+  nvidia_dc_565 = markBroken nvidia_dc_565;
+  nvidia_x11_legacy470 = markBroken nvidia_x11_legacy470;
+  nvidiaPackages = nvidiaPackages.extend (
+    _finalNV: prevNV: with prevNV; {
+      production = fixNoVideo production;
+      stable = fixNoVideo stable;
+      beta = fixNoVideo beta;
+      vulkan_beta = fixNoVideo vulkan_beta;
+      latest = fixNoVideo latest;
+      legacy_535 = fixNoVideo legacy_535;
+      dc_535 = markBroken dc_535;
+      dc_565 = markBroken dc_565;
+      legacy_470 = markBroken legacy_470;
+    }
+  );
+  # perf needs systemtap fixed first
+  perf = markBroken perf;
+  virtualbox =
+    multiOverride virtualbox
+      {
+        inherit (final) virtualbox;
+      }
+      (prevAttrs: {
+        makeFlags = prevAttrs.makeFlags ++ kernel.commonMakeFlags;
+      });
+  xpadneo = xpadneo.override {
+    inherit (final) bluez;
+  };
+  zenpower = zenpower.overrideAttrs (prevAttrs: {
+    makeFlags =
+      prevAttrs.makeFlags
+      ++ kernel.commonMakeFlags
+      ++ [
+        "KBUILD_CFLAGS="
+      ];
+  });
+}

packages/linux-cachyos/lib/llvm-pkgs.nix

@@ -0,0 +1,30 @@
+{
+  final,
+  flakes,
+  ...
+}:
+let
+  # Don't waste user's time.
+  markBroken =
+    drv:
+    drv.overrideAttrs (prevAttrs: {
+      meta = (prevAttrs.meta or { }) // {
+        broken = true;
+      };
+    });
+in
+(final.pkgsLLVM.extend flakes.self.overlays.default).extend (
+  _finalLLVM: prevLLVM: {
+    inherit (final)
+      dbus
+      libdrm
+      libgbm
+      libGL
+      libxv
+      libtirpc
+      wayland
+      xorg
+      ;
+    cups = markBroken prevLLVM.cups;
+  }
+)