2 files changed, 63 insertions, 51 deletions
diff --git a/example/config.nix b/example/config.nix
index e9766fe..36c0950 100644
--- a/example/config.nix
+++ b/example/config.nix
@@ -1,57 +1,62 @@
 # usage: nix-instantiate --eval --json --strict example/config.nix | jq .
 {
-  type = "table";
-  format = "gpt";
-  partitions = [
-    {
-      type = "partition";
-      part-type = "ESP";
-      start = "1MiB";
-      end = "1024MiB";
-      fs-type = "fat32";
-      bootable = true;
-      content = {
-        type = "filesystem";
-        format = "vfat";
-        mountpoint = "/boot";
-      };
-    }
-    {
-      type = "partition";
-      part-type = "primary";
-      start = "1024MiB";
-      end = "100%";
-      content = {
-        type = "luks";
-        algo = "aes-xts...";
-        name = "crypted";
-        keyfile = "/tmp/secret.key";
-        content = {
-          type = "lvm";
-          name = "pool";
-          lvs = {
-            root = {
-              type = "lv";
-              size = "10G";
-              mountpoint = "/";
-              content = {
-                type = "filesystem";
-                format = "ext4";
-                mountpoint = "/";
-              };
-            };
-            home = {
-              type = "lv";
-              size = "10G";
-              content = {
-                type = "filesystem";
-                format = "ext4";
-                mountpoint = "/home";
+  type = "layout";
+  content = {
+    "/dev/sda" = {
+      type = "table";
+      format = "gpt";
+      partitions = [
+        {
+          type = "partition";
+          part-type = "ESP";
+          start = "1MiB";
+          end = "1024MiB";
+          fs-type = "fat32";
+          bootable = true;
+          content = {
+            type = "filesystem";
+            format = "vfat";
+            mountpoint = "/boot";
+          };
+        }
+        {
+          type = "partition";
+          part-type = "primary";
+          start = "1024MiB";
+          end = "100%";
+          content = {
+            type = "luks";
+            algo = "aes-xts...";
+            name = "crypted";
+            keyfile = "/tmp/secret.key";
+            content = {
+              type = "lvm";
+              name = "pool";
+              lvs = {
+                root = {
+                  type = "lv";
+                  size = "10G";
+                  mountpoint = "/";
+                  content = {
+                    type = "filesystem";
+                    format = "ext4";
+                    mountpoint = "/";
+                  };
+                };
+                home = {
+                  type = "lv";
+                  size = "10G";
+                  content = {
+                    type = "filesystem";
+                    format = "ext4";
+                    mountpoint = "/home";
+                  };
+                };
               };
             };
           };
-        };
-      };
-    }
-  ];
+        }
+      ];
+    };
+  };
 }
diff --git a/lib/default.nix b/lib/default.nix
index 2075b27..bc3aac7 100644
--- a/lib/default.nix
+++ b/lib/default.nix
@@ -12,6 +12,9 @@ let
     };
   };
 
+  config.layout = q: x:
+    foldl' mergeAttrs {} (mapAttrsToList (name: config-f { device = name; }) x.content);
+
   config.lv = q: x:
     config-f { device = "/dev/${q.vgname}/${q.name}"; } x.content;
 
@@ -35,6 +38,10 @@ let
     mkfs.${x.format} ${q.device}
   '';
 
+  format.layout = q: x: ''
+    ${concatStrings (mapAttrsToList (name: format-f { device = name; }) x.content)}
+  '';
+
   format.lv = q: x: ''
     lvcreate -L ${x.size} -n ${q.name} ${q.vgname}
     ${format-f { device = "/dev/${q.vgname}/${q.name}"; } x.content}