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authorEelco Dolstra <edolstra@gmail.com>2017-10-30 10:16:19 +0100
committerEelco Dolstra <edolstra@gmail.com>2017-10-30 10:22:58 +0100
commit66ddbef7547a2b5430c6d87e2d8d52977f7bf6f0 (patch)
treedd47c67718b9de379ae30fc39ba45d354035d8e4
parentf25791c196e7bcf76aa76e143a679fe731f77513 (diff)
fetchurl/fetchTarball: Respect name changes
The computation of urlHash didn't take the name into account, so subsequent fetchurl calls with the same URL but a different name would resolve to the same cached store path.
-rw-r--r--src/libexpr/primops.cc2
-rw-r--r--src/libstore/download.cc4
2 files changed, 4 insertions, 2 deletions
diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
index 6a50c9934..43dc20080 100644
--- a/src/libexpr/primops.cc
+++ b/src/libexpr/primops.cc
@@ -1911,7 +1911,7 @@ void fetch(EvalState & state, const Pos & pos, Value * * args, Value & v,
{
string url;
Hash expectedHash;
- string name;
+ string name = "";
state.forceValue(*args[0]);
diff --git a/src/libstore/download.cc b/src/libstore/download.cc
index 608b8fd39..579a5e8c1 100644
--- a/src/libstore/download.cc
+++ b/src/libstore/download.cc
@@ -23,6 +23,8 @@
#include <cmath>
#include <random>
+using namespace std::string_literals;
+
namespace nix {
double getTime()
@@ -604,7 +606,7 @@ Path Downloader::downloadCached(ref<Store> store, const string & url_, bool unpa
Path cacheDir = getCacheDir() + "/nix/tarballs";
createDirs(cacheDir);
- string urlHash = hashString(htSHA256, url).to_string(Base32, false);
+ string urlHash = hashString(htSHA256, name + std::string("\0"s) + url).to_string(Base32, false);
Path dataFile = cacheDir + "/" + urlHash + ".info";
Path fileLink = cacheDir + "/" + urlHash + "-file";