nix: basic installer image generator

nix/custom/default.nix

@@ -1,9 +1,9 @@
-{ self, ... }:
+{ self, inputs, ... }:
 {
   flake.lib.mkNerdFont = ./mkNerdFont.nix;
 
   perSystem =
-    { pkgs, ... }:
+    { pkgs, system, ... }:
     let
       inherit (pkgs) alt-ergo-pin;
       mkNerdFont = pkgs.callPackage self.lib.mkNerdFont { };
@@ -37,7 +37,21 @@
         maeel = pkgs.callPackage ./maeel.nix { };
         tokei = pkgs.callPackage ./tokei { }; # alpha tokei with typst, skel, hledger
 
-        posy-cursor = pkgs.callPackage ./posy-cursor.nix { };
+        carbon-installer = inputs.nixos-generators.nixosGenerate {
+          inherit system;
+          specialArgs = {
+            inherit pkgs;
+            hostname = "carbon";
+          };
+          format = "install-iso";
+          modules = [
+            self.nixosModules.layouts
+            {
+              environment.etc.flake-source.source = self;
+              environment.systemPackages = [ pkgs.disko ];
+            }
+          ];
+        };
       };
     };
 }

nix/disko/carbon/default.nix

@@ -0,0 +1,70 @@
+# Adapted from: https://github.com/nix-community/disko/blob/master/example/luks-lvm.nix
+
+{
+  disko.devices = {
+    disk = {
+      main = {
+        type = "disk";
+        device = throw "Override me or change me";
+        content = {
+          type = "gpt";
+          partitions = {
+            ESP = {
+              size = "500M";
+              type = "EF00";
+              content = {
+                type = "filesystem";
+                format = "vfat";
+                mountpoint = "/boot";
+                mountOptions = [ "defaults" ];
+              };
+            };
+            luks = {
+              size = "100%";
+              content = {
+                type = "luks";
+                name = "crypted";
+                extraOpenArgs = [ ];
+                settings = {
+                  # # if you want to use the key for interactive login be sure there is no trailing newline
+                  # # for example use `echo -n "password" > /tmp/secret.key`
+                  # keyFile = "/tmp/secret.key";
+                  askPassword = true;
+                  allowDiscards = true;
+                };
+                content = {
+                  type = "lvm_pv";
+                  vg = "pool";
+                };
+              };
+            };
+          };
+        };
+      };
+    };
+    lvm_vg = {
+      pool = {
+        type = "lvm_vg";
+        lvs = {
+          root = {
+            size = "20G";
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountpoint = "/";
+              mountOptions = [ "defaults" ];
+            };
+          };
+          home = {
+            size = "100%FREE";
+            content = {
+              type = "filesystem";
+              format = "ext4";
+              mountpoint = "/home";
+            };
+          };
+        };
+      };
+    };
+  };
+}

nix/disko/default.nix

@@ -0,0 +1 @@
+{ flake.diskoConfigurations.carbon = import ./carbon; }