From 5587dbdcf078586dcc5b9c54af614c1915e9da0a Mon Sep 17 00:00:00 2001
From: eldritch horrors <pennae@lix.systems>
Date: Sat, 11 May 2024 00:22:21 +0200
Subject: libstore: make BinaryCacheStore::getFile return a source

this lets us remove the last true remaining uses of
makeDecompressionSink.

Change-Id: I146ca2bbe1a9ae9a367117a7b8a304b23a63e5e2
---
 src/libutil/file-system.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'src/libutil/file-system.cc')

diff --git a/src/libutil/file-system.cc b/src/libutil/file-system.cc
index 13c2b27eb..278e5187c 100644
--- a/src/libutil/file-system.cc
+++ b/src/libutil/file-system.cc
@@ -294,7 +294,9 @@ Generator<Bytes> readFileSource(const Path & path)
     AutoCloseFD fd{open(path.c_str(), O_RDONLY | O_CLOEXEC)};
     if (!fd)
         throw SysError("opening file '%s'", path);
-    co_yield drainFDSource(fd.get());
+    return [](AutoCloseFD fd) -> Generator<Bytes> {
+        co_yield drainFDSource(fd.get());
+    }(std::move(fd));
 }
 
 
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