Merge pull request #3674 from matthewbauer/allow-empty-hash2

Allow empty hash in derivations

2 files changed, 2 insertions, 3 deletions

diff --git a/src/libfetchers/fetchers.cc b/src/libfetchers/fetchers.cc
index ca555114d..11cac4c55 100644
--- a/src/libfetchers/fetchers.cc
+++ b/src/libfetchers/fetchers.cc
@@ -36,7 +36,7 @@ std::unique_ptr<Input> inputFromAttrs(const Attrs & attrs)
         if (res) {
             if (auto narHash = maybeGetStrAttr(attrs, "narHash"))
                 // FIXME: require SRI hash.
-                res->narHash = Hash(*narHash);
+                res->narHash = newHashAllowEmpty(*narHash, htUnknown);
             return res;
         }
     }
diff --git a/src/libfetchers/tarball.cc b/src/libfetchers/tarball.cc
index 1b0eba18a..7966da314 100644
--- a/src/libfetchers/tarball.cc
+++ b/src/libfetchers/tarball.cc
@@ -264,8 +264,7 @@ struct TarballInputScheme : InputScheme
 
         auto input = std::make_unique<TarballInput>(parseURL(getStrAttr(attrs, "url")));
         if (auto hash = maybeGetStrAttr(attrs, "hash"))
-            // FIXME: require SRI hash.
-            input->hash = Hash(*hash);
+            input->hash = newHashAllowEmpty(*hash, htUnknown);
 
         return input;
     }