From 82e28cda1c923d48a7f0110f84b806542053163c Mon Sep 17 00:00:00 2001
From: Artemis Tosini <me@artem.ist>
Date: Sun, 29 Aug 2021 01:37:48 +0000
Subject: [PATCH] Add dptx-dummy so that dptx.bin gets into the initrd

---
 externals/packages/dptx-dummy/.gitignore      |  1 +
 externals/packages/dptx-dummy/default.nix     | 26 +++++++++++++++++++
 externals/packages/dptx-dummy/src/Makefile    |  1 +
 .../packages/dptx-dummy/src/dptx-dummy.c      |  6 +++++
 system/mistmane/default.nix                   |  9 +++++++
 5 files changed, 43 insertions(+)
 create mode 100644 externals/packages/dptx-dummy/.gitignore
 create mode 100644 externals/packages/dptx-dummy/default.nix
 create mode 100644 externals/packages/dptx-dummy/src/Makefile
 create mode 100644 externals/packages/dptx-dummy/src/dptx-dummy.c

diff --git a/externals/packages/dptx-dummy/.gitignore b/externals/packages/dptx-dummy/.gitignore
new file mode 100644
index 0000000..e31b50d
--- /dev/null
+++ b/externals/packages/dptx-dummy/.gitignore
@@ -0,0 +1 @@
+*.cmd
diff --git a/externals/packages/dptx-dummy/default.nix b/externals/packages/dptx-dummy/default.nix
new file mode 100644
index 0000000..f3dbe5c
--- /dev/null
+++ b/externals/packages/dptx-dummy/default.nix
@@ -0,0 +1,26 @@
+{ stdenv, lib, kernel }:
+
+stdenv.mkDerivation rec {
+  pname = "dptx-dummy";
+  version = "0.1";
+  src = ./src;
+  nativeBuildInputs = kernel.moduleBuildDependencies;
+  setSourceRoot = ''
+    export sourceRoot=$(pwd)/src;
+  '';
+  makeFlags = [
+    "-C"
+    "${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
+    "M=$(sourceRoot)"
+  ];
+  buildFlags = [ "modules" ];
+  installFlags = [ "INSTALL_MOD_PATH=${placeholder "out"}" ];
+  installTargets = [ "modules_install" ];
+  meta = with lib; {
+    description = "Dummy module that requires rockchip/dptx.bin";
+    homepage = "https://artem.ist";
+    license = licenses.gpl2;
+    maintainers = [ maintainers.artemist ];
+    platforms = platforms.linux;
+  };
+}
diff --git a/externals/packages/dptx-dummy/src/Makefile b/externals/packages/dptx-dummy/src/Makefile
new file mode 100644
index 0000000..f7d027e
--- /dev/null
+++ b/externals/packages/dptx-dummy/src/Makefile
@@ -0,0 +1 @@
+obj-m := dptx-dummy.o
diff --git a/externals/packages/dptx-dummy/src/dptx-dummy.c b/externals/packages/dptx-dummy/src/dptx-dummy.c
new file mode 100644
index 0000000..bf319af
--- /dev/null
+++ b/externals/packages/dptx-dummy/src/dptx-dummy.c
@@ -0,0 +1,6 @@
+#include <linux/module.h>
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Artemis Tosini <me@artem.ist>");
+MODULE_DESCRIPTION("Dummy module that requires rockchip/dptx.bin");
+MODULE_FIRMWARE("rockchip/dptx.bin");
diff --git a/system/mistmane/default.nix b/system/mistmane/default.nix
index d07c8c2..78d285e 100644
--- a/system/mistmane/default.nix
+++ b/system/mistmane/default.nix
@@ -55,5 +55,14 @@
     extraConfig = lib.mkForce "HandlePowerKey=lock";
   };
 
+  swapDevices = [{
+    device = "/dev/disk/by-partuuid/3f4fb4d3-1e13-f64a-a435-8f866833c2b1";
+    randomEncryption = true;
+  }];
+
+  # rockchip/dptx.bin isn't in the initrd. Instead of fix nixpkgs let's do something incredibly cursed
+  boot.extraModulePackages = [ (pkgs.callPackage ../../externals/packages/dptx-dummy { kernel = config.boot.kernelPackages.kernel; }) ];
+  boot.initrd.availableKernelModules = [ "dptx-dummy" ];
+
   system.stateVersion = "21.11";
 }