move rootfs nixos-module to nix/pkgs

flake.nix

@@ -43,14 +43,5 @@
             builtins.elem role [ "server" "container" ]
           ) self.lib.config.site.hosts
         );
-
-      # nixosConfigurations.test_vm =
-      #   nixpkgs.lib.nixosSystem {
-      #     inherit system;
-      #     modules = [ nixosModule ];
-      #     extraModules = [ ({ ... }: {
-      #       networking.hostName = "test_vm";
-      #     }) ];
-      #   };
     };
 }

nix/nixos-module/lxc-containers.nix

@@ -16,15 +16,6 @@ let
     );
   enabled = containers != {};
 
-  mkRootfs = ctName:
-    pkgs.runCommandLocal "rootfs_${ctName}" {
-      src = self.nixosConfigurations.${ctName}.config.system.build.toplevel;
-    } ''
-      set -x
-      mkdir -p $out/{bin,dev,etc,home,mnt,nix/store,nix/var,proc,root,run,sys,tmp,var,usr}
-      ln -s $src/init $out/
-      ln -s $src/etc $out/etc/static
-    '';
 in
 {
   virtualisation.lxc = lib.mkIf enabled {
@@ -42,7 +33,7 @@ in
   environment.etc =
     builtins.foldl' (etc: ctName: etc // {
       "lxc/containers/${ctName}/rootfs" = {
-        source = mkRootfs ctName;
+        source = self.packages.x86_64-linux."${ctName}-rootfs";
       };
       "lxc/containers/${ctName}/config" = {
         enable = true;

nix/pkgs/default.nix

@@ -23,20 +23,31 @@ let
     ) (builtins.attrNames config.site.hosts)
   );
 
-  test_vm = nixpkgs.legacyPackages.${system}.runCommandLocal "test_vm" {
-    src = self.nixosConfigurations.test_vm.config.system.build.toplevel;
-  } ''
-    set -x
-    mkdir -p $out/{bin,dev,etc,home,mnt,nix/store,nix/var,proc,root,run,sys,tmp,var,usr}
-    ln -s $src/init $out/
-    ln -s $src/etc $out/etc/static
-  '';
+  mkRootfs = hostName:
+    nixpkgs.legacyPackages.${system}.runCommandLocal "rootfs_${hostName}" {
+      src = self.nixosConfigurations.${hostName}.config.system.build.toplevel;
+    } ''
+      set -x
+      mkdir -p $out/{bin,dev,etc,home,mnt,nix/store,nix/var,proc,root,run,sys,tmp,var,usr}
+      ln -s $src/init $out/
+      ln -s $src/etc $out/etc/static
+    '';
+
+  rootfs =
+    builtins.foldl' (rootfs: hostName: rootfs // {
+      "${hostName}-rootfs" = mkRootfs hostName;
+    }) {} (
+      builtins.attrNames (
+        nixpkgs.lib.filterAttrs (_: { role, ... }: role == "container")
+          config.site.hosts
+      )
+    );
 
   device-templates = import ./device-templates.nix {
     inherit self nixpkgs system;
   };
 
 in
-salt-pillars // device-templates // {
-  inherit export-config test_vm;
+salt-pillars // rootfs // device-templates // {
+  inherit export-config;
 }