From 59d0de6ea17b7836e7f2e169ea4c8e65b413500a Mon Sep 17 00:00:00 2001
From: regnat <rg@regnat.ovh>
Date: Tue, 18 May 2021 13:54:05 +0200
Subject: [PATCH] Restore an accidentally suppressed negation
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Accidentally removed in ca96f5219489c1002499bfe2c580fdd458219144. This
caused `nix run` to systematically fail with

```
error: app program '/nix/store/…' is not in the Nix store
```
---
 src/nix/app.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/nix/app.cc b/src/nix/app.cc
index bdc64a886..01a0064db 100644
--- a/src/nix/app.cc
+++ b/src/nix/app.cc
@@ -112,7 +112,7 @@ App UnresolvedApp::resolve(ref<Store> store)
 
     auto builtContext = build(store, Realise::Outputs, installableContext);
     res.program = resolveString(*store, unresolved.program, builtContext);
-    if (store->isInStore(res.program))
+    if (!store->isInStore(res.program))
         throw Error("app program '%s' is not in the Nix store", res.program);
 
     return res;