Don't remove Content-Encoding in fetchurl / nix-prefetch-url

Fixes #1568.

3 files changed, 4 insertions, 1 deletions

diff --git a/src/libstore/builtins.cc b/src/libstore/builtins.cc
index 1075b45c00b5..4ca4a838e3c4 100644
--- a/src/libstore/builtins.cc
+++ b/src/libstore/builtins.cc
@@ -27,6 +27,7 @@ void builtinFetchurl(const BasicDerivation & drv, const std::string & netrcData)
            the result anyway. */
         DownloadRequest request(url);
         request.verifyTLS = false;
+        request.decompress = false;
 
         /* Note: have to use a fresh downloader here because we're in
            a forked process. */
diff --git a/src/libstore/download.cc b/src/libstore/download.cc
index f5304daeefd2..3f5e744dde19 100644
--- a/src/libstore/download.cc
+++ b/src/libstore/download.cc
@@ -269,7 +269,8 @@ struct CurlDownloader : public Downloader
                 done = true;
 
                 try {
-                    result.data = decodeContent(encoding, ref<std::string>(result.data));
+                    if (request.decompress)
+                        result.data = decodeContent(encoding, ref<std::string>(result.data));
                     callSuccess(success, failure, const_cast<const DownloadResult &>(result));
                     act.progress(result.data->size(), result.data->size());
                 } catch (...) {
diff --git a/src/libstore/download.hh b/src/libstore/download.hh
index 752bf3723cfc..f2d65ad8d61d 100644
--- a/src/libstore/download.hh
+++ b/src/libstore/download.hh
@@ -17,6 +17,7 @@ struct DownloadRequest
     size_t tries = 5;
     unsigned int baseRetryTimeMs = 250;
     ActivityId parentAct;
+    bool decompress = true;
 
     DownloadRequest(const std::string & uri)
         : uri(uri), parentAct(curActivity) { }