From 970366266b8df712f5f9cedb45af183ef5a8357f Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Thu, 14 Sep 2017 13:22:32 +0200
Subject: Add "nix add-to-store" command

---
 src/libutil/args.hh | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'src/libutil')

diff --git a/src/libutil/args.hh b/src/libutil/args.hh
index 7f8ea647c909..401bebbabc08 100644
--- a/src/libutil/args.hh
+++ b/src/libutil/args.hh
@@ -81,15 +81,16 @@ public:
         FlagMaker & handler(std::function<void(Strings)> handler) { flag->handler = handler; return *this; };
         FlagMaker & category(const std::string & s) { flag->category = s; return *this; };
 
-        FlagMaker & dest(std::string * dest) {
-            assert(flag->arity == 1);
+        template<class T>
+        FlagMaker & dest(T * dest) {
+            flag->arity = 1;
             flag->handler = [=](Strings ss) { *dest = ss.front(); };
             return *this;
         };
 
         template<class T>
         FlagMaker & set(T * dest, const T & val) {
-            assert(flag->arity == 0);
+            flag->arity = 1;
             flag->handler = [=](Strings ss) { *dest = val; };
             return *this;
         };
-- 
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