PatOS is born!

2024-09-12 21:57:01 +02:00 · 2024-09-12 21:57:01 +02:00 · 44d8f9c90d
commit 44d8f9c90d
parent 0f3b2072f4
12 changed files with 383 additions and 0 deletions
--- a/modules/partitions.nix
+++ b/modules/partitions.nix
@ -0,0 +1,85 @@
+{ config, pkgs, lib, modulesPath, ... }: {
+
+  imports = [
+    "${modulesPath}/image/repart.nix"
+  ];
+
+  image.repart =
+    let
+      efiArch = pkgs.stdenv.hostPlatform.efiArch;
+    in
+    {
+      name = config.boot.uki.name;
+      split = true;
+
+      partitions = {
+        "esp" = {
+          contents = {
+            "/EFI/BOOT/BOOT${lib.toUpper efiArch}.EFI".source =
+              "${pkgs.systemd}/lib/systemd/boot/efi/systemd-boot${efiArch}.efi";
+
+            "/EFI/Linux/${config.system.boot.loader.ukiFile}".source =
+              "${config.system.build.uki}/${config.system.boot.loader.ukiFile}";
+
+            # systemd-boot configuration
+            "/loader/loader.conf".source = (pkgs.writeText "$out" ''
+              timeout 3
+            '');
+          };
+          repartConfig = {
+            Type = "esp";
+            UUID = "c12a7328-f81f-11d2-ba4b-00a0c93ec93b"; # Well known
+            Format = "vfat";
+            SizeMinBytes = "256M";
+            SplitName = "-";
+          };
+        };
+        "store" = {
+          storePaths = [ config.system.build.toplevel ];
+          stripNixStorePrefix = true;
+          repartConfig = {
+            Type = "linux-generic";
+            Label = "store_${config.system.image.version}";
+            Format = "squashfs";
+            Minimize = "off";
+            ReadOnly = "yes";
+
+            SizeMinBytes = "1G";
+            SizeMaxBytes = "1G";
+            SplitName = "store";
+          };
+        };
+
+        # Placeholder for the second installed Nix store.
+        "store-empty" = {
+          repartConfig = {
+            Type = "linux-generic";
+            Label = "_empty";
+            Minimize = "off";
+            SizeMinBytes = "1G";
+            SizeMaxBytes = "1G";
+            SplitName = "-";
+          };
+        };
+
+        # Persistent storage
+        "var" = {
+          repartConfig = {
+            Type = "var";
+            UUID = "4d21b016-b534-45c2-a9fb-5c16e091fd2d"; # Well known
+            Format = "xfs";
+            Label = "nixos-persistent";
+            Minimize = "off";
+
+            # Has to be large enough to hold update files.
+            SizeMinBytes = "2G";
+            SizeMaxBytes = "2G";
+            SplitName = "-";
+
+            # Wiping this gives us a clean state.
+            FactoryReset = "yes";
+          };
+        };
+      };
+    };
+}