nix: fix rollback command

Makefile

@@ -37,13 +37,21 @@ $(1): ;
 	systemctl --user reset-failed
 	$$(NIX_RUN)switch/$(1)
 
-.PHONY: $(1)-test
-$(1)-test: ; $$(NIX_RUN)test/$(1)
+.PHONY: rollback-$(1)
+rollback-$(1):
+	$$(NIX_RUN)rollback/$(1)
+
+.PHONY: test-$(1)
+test-$(1): ; $$(NIX_RUN)test/$(1)
 endef
 
 define vps_rule
 .PHONY: $(1)
 $(1): ; $$(NIX_RUN)deploy/$(1)
+
+.PHONY: rollback-$(1)
+rollback-$(1):
+	$$(NIX_RUN)rollback/$(1)
 endef
 
 $(foreach machine,$(MACHINES),$(eval $(call machine_rule,$(machine))))

flake.nix

@@ -74,9 +74,7 @@
 
               rollback = lib.recurseIntoAttrs (lib.mapAttrs
                 (hostname: machine: pkgs.writeShellScript "rollback-${hostname}" ''
-                  ${nixos-rebuild}/bin/nixos-rebuild test \
-                    --rollback \
-                    --flake .#${hostname}
+                  ${nixos-rebuild}/bin/nixos-rebuild switch --rollback
                 '')
                 self.nixosConfigurations);