now using flake-parts; refactored nixosConfigurations; using hm standalone

hosts/io/boot.nix

@@ -0,0 +1,14 @@
+{
+  boot = {
+    # TODO check if future kernel versions fix boot issue with systemd initrd with tpm
+    initrd.systemd.tpm2.enable = false;
+    kernelParams = [
+      "nosgx"
+      "i915.fastboot=1"
+      "mem_sleep_default=deep"
+    ];
+    extraModprobeConfig = ''
+      options snd-intel-dspcfg dsp_driver=3
+    '';
+  };
+}

hosts/io/disko.nix

@@ -0,0 +1,83 @@
+{ inputs, ... }:
+
+{
+  imports = [ inputs.disko.nixosModules.default ];
+
+  disko.devices = {
+    disk = {
+      main = {
+        type = "disk";
+        device = "/dev/disk/by-id/mmc-hDEaP3_0x1041b689";
+        content = {
+          type = "gpt";
+          partitions = {
+            ESP = {
+              priority = 1;
+              name = "ESP";
+              start = "1MiB";
+              end = "1GiB";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot/efi";
+                mountOptions = [
+                  "noatime"
+                  "fmask=0077"
+                  "dmask=0077"
+                ];
+              };
+            };
+            cryptroot = {
+              priority = 2;
+              name = "root";
+              size = "100%";
+              content = {
+                type = "luks";
+                name = "cryptroot";
+                content = {
+                  type = "btrfs";
+                  extraArgs = [ "-f" ];
+                  subvolumes = {
+                    "@root" = {
+                      mountpoint = "/";
+                      mountOptions = [
+                        "noatime"
+                        "compress=zstd"
+                        "subvol=@root"
+                      ];
+                    };
+                    "@home" = {
+                      mountpoint = "/home";
+                      mountOptions = [
+                        "noatime"
+                        "compress=zstd"
+                        "subvol=@home"
+                      ];
+                    };
+                    "@nix" = {
+                      mountpoint = "/nix";
+                      mountOptions = [
+                        "noatime"
+                        "compress=zstd"
+                        "subvol=@nix"
+                      ];
+                    };
+                    "@persistent" = {
+                      mountpoint = "/persistent";
+                      mountOptions = [
+                        "noatime"
+                        "compress=zstd"
+                        "subvol=@persistent"
+                      ];
+                    };
+                  };
+                };
+              };
+            };
+          };
+        };
+      };
+    };
+  };
+}

hosts/io/hardware-configuration.nix

@@ -0,0 +1,36 @@
+{
+  config,
+  lib,
+  modulesPath,
+  ...
+}:
+
+{
+  imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
+
+  boot = {
+    initrd = {
+      availableKernelModules = [
+        "xhci_pci"
+        "ahci"
+        "usb_storage"
+        "sd_mod"
+        "sdhci_pci"
+      ];
+    };
+    kernelModules = [ "kvm-intel" ];
+  };
+
+  zramSwap = {
+    enable = true;
+    memoryPercent = 100;
+  };
+
+  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
+
+  networking.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}

hosts/io/programs.nix

@@ -0,0 +1,27 @@
+{ pkgs, ... }:
+
+let
+  cml-ucm-conf = pkgs.alsa-ucm-conf.overrideAttrs {
+    wttsrc = pkgs.fetchFromGitHub {
+      owner = "WeirdTreeThing";
+      repo = "chromebook-ucm-conf";
+      rev = "b6ce2a7";
+      hash = "sha256-QRUKHd3RQmg1tnZU8KCW0AmDtfw/daOJ/H3XU5qWTCc=";
+    };
+    postInstall = ''
+      echo "v0.4.1" > $out/chromebook.patched
+      cp -R $wttsrc/{common,codecs,platforms} $out/share/alsa/ucm2
+      cp -R $wttsrc/{cml,sof-rt5682} $out/share/alsa/ucm2/conf.d
+    '';
+  };
+in
+
+{
+  environment = {
+    systemPackages = with pkgs; [
+      maliit-keyboard
+      sof-firmware
+    ];
+    sessionVariables.ALSA_CONFIG_UCM2 = "${cml-ucm-conf}/share/alsa/ucm2";
+  };
+}

hosts/io/services.nix

@@ -0,0 +1,59 @@
+{ pkgs, ... }:
+
+{
+  services = {
+    keyd = {
+      enable = true;
+      keyboards.main = {
+        ids = [ "0001:0001" ];
+        settings = {
+          main = {
+            meta = "overload(meta, esc)";
+            f1 = "back";
+            f2 = "forward";
+            f3 = "refresh";
+            f4 = "M-f11";
+            f5 = "M-w";
+            f6 = "brightnessdown";
+            f7 = "brightnessup";
+            f8 = "timeout(mute, 200, micmute)";
+            f9 = "play";
+            f10 = "timeout(nextsong, 200, previoussong)";
+            f13 = "delete";
+            "102nd" = "layer(function)";
+          };
+          shift = {
+            leftshift = "capslock";
+            rightshift = "capslock";
+          };
+          function = {
+            escape = "f1";
+            f1 = "f2";
+            f2 = "f3";
+            f3 = "f4";
+            f4 = "f5";
+            f5 = "f6";
+            f6 = "f7";
+            f7 = "f8";
+            f8 = "f9";
+            f9 = "f10";
+            f10 = "f11";
+            f13 = "f12";
+            y = "sysrq";
+            k = "home";
+            l = "pageup";
+            "," = "end";
+            "." = "pagedown";
+          };
+        };
+      };
+    };
+  };
+
+  # TODO: remove once gmodena/nix-flatpak/issues/45 fixed
+  systemd.services."flatpak-managed-install" = {
+    serviceConfig = {
+      ExecStartPre = "${pkgs.coreutils}/bin/sleep 5";
+    };
+  };
+}