Makefile : Add verify target.

Makefile

@@ -2,7 +2,7 @@ options = --option eval-cache false
 flake   = .
 
 .PHONY: boot
-boot: check
+boot: check verify
 	nixos-rebuild boot $(options) --flake $(flake)
 
 .PHONY: reboot
@@ -10,7 +10,7 @@ reboot: boot
 	reboot
 
 .PHONY: switch
-switch:
+switch: verify
 	nixos-rebuild switch $(options) --flake $(flake)
 
 .PHONY: update
@@ -18,11 +18,11 @@ update:
 	nix flake update
 
 .PHONY: live
-live: check
+live: check verify
 	nix build -o live $(options) $(flake)#nixosConfigurations.live.config.system.build.isoImage
 
 .PHONY: android
-android:
+android: verify
 	nix-on-droid switch --flake $(flake)
 
 .PHONY: check
@@ -36,3 +36,7 @@ trace:
 .PHONY: show
 show:
 	nix flake show
+
+.PHONY: verify
+verify:
+	git verify-commit HEAD