[PATCH]

From: ludo@gnu.org (Ludovic Courtès)
To: nix-dev <nix-dev@lists.science.uu.nl>
Cc: guix-devel <guix-devel@gnu.org>
Subject: [PATCH]
Date: Mon, 14 Apr 2014 15:38:01 +0200	[thread overview]
Message-ID: <878ur8jakm.fsf@gnu.org> (raw)

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The patch below allows files such as /nix/store/foo to be protected from
GC if a root refers to them.  This makes it easy for a build hook to use
such files for its temporary working files.

WDYT?

Thanks,
Ludo’.


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diff --git a/src/libstore/gc.cc b/src/libstore/gc.cc
index 96e891f..299bf5f 100644
--- a/src/libstore/gc.cc
+++ b/src/libstore/gc.cc
@@ -287,10 +287,7 @@ static void foundRoot(StoreAPI & store,
     const Path & path, const Path & target, Roots & roots)
 {
     Path storePath = toStorePath(target);
-    if (store.isValidPath(storePath))
     roots[path] = storePath;
-    else
-        printMsg(lvlInfo, format("skipping invalid root from `%1%' to `%2%'") % path % storePath);
 }

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