diff --git a/maintainers/upload-release.pl b/maintainers/upload-release.pl
index 91ae896d6..6f3882a12 100755
--- a/maintainers/upload-release.pl
+++ b/maintainers/upload-release.pl
@@ -117,7 +117,16 @@ for my $fn (glob "$tmpDir/*") {
     my $dstKey = "$releaseDir/" . $name;
     unless (defined $releasesBucket->head_key($dstKey)) {
         print STDERR "uploading $fn to s3://$releasesBucketName/$dstKey...\n";
-        $releasesBucket->add_key_filename($dstKey, $fn)
+
+        my $configuration = ();
+        $configuration->{content_type} = "application/octet-stream";
+
+        if ($fn =~ /.sha256|.asc|install/) {
+            # Text files
+            $configuration->{content_type} = "text/plain";
+        }
+
+        $releasesBucket->add_key_filename($dstKey, $fn, $configuration)
             or die $releasesBucket->err . ": " . $releasesBucket->errstr;
     }
 }
diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
index 821cf0782..87eb7ae7b 100644
--- a/src/libexpr/primops.cc
+++ b/src/libexpr/primops.cc
@@ -1015,7 +1015,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
         Hash h = newHashAllowEmpty(*outputHash, ht);
 
         auto outPath = state.store->makeFixedOutputPath(ingestionMethod, h, drvName);
-        if (!jsonObject) drv.env["out"] = state.store->printStorePath(outPath);
+        drv.env["out"] = state.store->printStorePath(outPath);
         drv.outputs.insert_or_assign("out", DerivationOutput {
                 .output = DerivationOutputCAFixed {
                     .hash = FixedOutputHash {
@@ -1029,7 +1029,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
     else if (contentAddressed) {
         HashType ht = parseHashType(outputHashAlgo);
         for (auto & i : outputs) {
-            if (!jsonObject) drv.env[i] = hashPlaceholder(i);
+            drv.env[i] = hashPlaceholder(i);
             drv.outputs.insert_or_assign(i, DerivationOutput {
                 .output = DerivationOutputCAFloating {
                     .method = ingestionMethod,
@@ -1047,7 +1047,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
            that changes in the set of output names do get reflected in
            the hash. */
         for (auto & i : outputs) {
-            if (!jsonObject) drv.env[i] = "";
+            drv.env[i] = "";
             drv.outputs.insert_or_assign(i,
                 DerivationOutput {
                     .output = DerivationOutputInputAddressed {
@@ -1062,7 +1062,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
 
         for (auto & i : outputs) {
             auto outPath = state.store->makeOutputPath(i, h, drvName);
-            if (!jsonObject) drv.env[i] = state.store->printStorePath(outPath);
+            drv.env[i] = state.store->printStorePath(outPath);
             drv.outputs.insert_or_assign(i,
                 DerivationOutput {
                     .output = DerivationOutputInputAddressed {
@@ -1073,7 +1073,7 @@ static void prim_derivationStrict(EvalState & state, const Pos & pos, Value * *
     }
 
     /* Write the resulting term into the Nix store directory. */
-    auto drvPath = writeDerivation(state.store, drv, state.repair);
+    auto drvPath = writeDerivation(*state.store, drv, state.repair);
     auto drvPathS = state.store->printStorePath(drvPath);
 
     printMsg(lvlChatty, "instantiated '%1%' -> '%2%'", drvName, drvPathS);
diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index afb2bb096..dd932cee9 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -2756,8 +2756,12 @@ struct RestrictedStore : public LocalFSStore
     void queryReferrers(const StorePath & path, StorePathSet & referrers) override
     { }
 
-    OutputPathMap queryDerivationOutputMap(const StorePath & path) override
-    { throw Error("queryDerivationOutputMap"); }
+    std::map<std::string, std::optional<StorePath>> queryPartialDerivationOutputMap(const StorePath & path) override
+    {
+        if (!goal.isAllowed(path))
+            throw InvalidPath("cannot query output map for unknown path '%s' in recursive Nix", printStorePath(path));
+        return next->queryPartialDerivationOutputMap(path);
+    }
 
     std::optional<StorePath> queryPathFromHashPart(const std::string & hashPart) override
     { throw Error("queryPathFromHashPart"); }
@@ -4983,7 +4987,7 @@ void Worker::waitForInput()
         std::vector<unsigned char> buffer(4096);
         for (auto & k : fds2) {
             if (pollStatus.at(fdToPollStatus.at(k)).revents) {
-                ssize_t rd = read(k, buffer.data(), buffer.size());
+                ssize_t rd = ::read(k, buffer.data(), buffer.size());
                 // FIXME: is there a cleaner way to handle pt close
                 // than EIO? Is this even standard?
                 if (rd == 0 || (rd == -1 && errno == EIO)) {
diff --git a/src/libstore/daemon.cc b/src/libstore/daemon.cc
index ad3fe1847..f35ddb522 100644
--- a/src/libstore/daemon.cc
+++ b/src/libstore/daemon.cc
@@ -325,9 +325,9 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
     case wopQueryDerivationOutputMap: {
         auto path = store->parseStorePath(readString(from));
         logger->startWork();
-        OutputPathMap outputs = store->queryDerivationOutputMap(path);
+        auto outputs = store->queryPartialDerivationOutputMap(path);
         logger->stopWork();
-        writeOutputPathMap(*store, to, outputs);
+        worker_proto::write(*store, to, outputs);
         break;
     }
 
diff --git a/src/libstore/derivations.cc b/src/libstore/derivations.cc
index a9fed2564..43bc61e55 100644
--- a/src/libstore/derivations.cc
+++ b/src/libstore/derivations.cc
@@ -61,7 +61,7 @@ bool BasicDerivation::isBuiltin() const
 }
 
 
-StorePath writeDerivation(ref<Store> store,
+StorePath writeDerivation(Store & store,
     const Derivation & drv, RepairFlag repair)
 {
     auto references = drv.inputSrcs;
@@ -71,10 +71,10 @@ StorePath writeDerivation(ref<Store> store,
        (that can be missing (of course) and should not necessarily be
        held during a garbage collection). */
     auto suffix = std::string(drv.name) + drvExtension;
-    auto contents = drv.unparse(*store, false);
+    auto contents = drv.unparse(store, false);
     return settings.readOnlyMode
-        ? store->computeStorePathForText(suffix, contents, references)
-        : store->addTextToStore(suffix, contents, references, repair);
+        ? store.computeStorePathForText(suffix, contents, references)
+        : store.addTextToStore(suffix, contents, references, repair);
 }
 
 
diff --git a/src/libstore/derivations.hh b/src/libstore/derivations.hh
index 3aae30ab2..9656a32f2 100644
--- a/src/libstore/derivations.hh
+++ b/src/libstore/derivations.hh
@@ -146,7 +146,7 @@ class Store;
 enum RepairFlag : bool { NoRepair = false, Repair = true };
 
 /* Write a derivation to the Nix store, and return its path. */
-StorePath writeDerivation(ref<Store> store,
+StorePath writeDerivation(Store & store,
     const Derivation & drv, RepairFlag repair = NoRepair);
 
 /* Read a derivation from a file. */
diff --git a/src/libstore/legacy-ssh-store.cc b/src/libstore/legacy-ssh-store.cc
index 9f95a9726..dc03313f0 100644
--- a/src/libstore/legacy-ssh-store.cc
+++ b/src/libstore/legacy-ssh-store.cc
@@ -209,6 +209,24 @@ struct LegacySSHStore : public Store
         const StorePathSet & references, RepairFlag repair) override
     { unsupported("addTextToStore"); }
 
+private:
+
+    void putBuildSettings(Connection & conn)
+    {
+        conn.to
+            << settings.maxSilentTime
+            << settings.buildTimeout;
+        if (GET_PROTOCOL_MINOR(conn.remoteVersion) >= 2)
+            conn.to
+                << settings.maxLogSize;
+        if (GET_PROTOCOL_MINOR(conn.remoteVersion) >= 3)
+            conn.to
+                << settings.buildRepeat
+                << settings.enforceDeterminism;
+    }
+
+public:
+
     BuildResult buildDerivation(const StorePath & drvPath, const BasicDerivation & drv,
         BuildMode buildMode) override
     {
@@ -218,16 +236,8 @@ struct LegacySSHStore : public Store
             << cmdBuildDerivation
             << printStorePath(drvPath);
         writeDerivation(conn->to, *this, drv);
-        conn->to
-            << settings.maxSilentTime
-            << settings.buildTimeout;
-        if (GET_PROTOCOL_MINOR(conn->remoteVersion) >= 2)
-            conn->to
-                << settings.maxLogSize;
-        if (GET_PROTOCOL_MINOR(conn->remoteVersion) >= 3)
-            conn->to
-                << settings.buildRepeat
-                << settings.enforceDeterminism;
+
+        putBuildSettings(*conn);
 
         conn->to.flush();
 
@@ -241,6 +251,29 @@ struct LegacySSHStore : public Store
         return status;
     }
 
+    void buildPaths(const std::vector<StorePathWithOutputs> & drvPaths, BuildMode buildMode) override
+    {
+        auto conn(connections->get());
+
+        conn->to << cmdBuildPaths;
+        Strings ss;
+        for (auto & p : drvPaths)
+            ss.push_back(p.to_string(*this));
+        conn->to << ss;
+
+        putBuildSettings(*conn);
+
+        conn->to.flush();
+
+        BuildResult result;
+        result.status = (BuildResult::Status) readInt(conn->from);
+
+        if (!result.success()) {
+            conn->from >> result.errorMsg;
+            throw Error(result.status, result.errorMsg);
+        }
+    }
+
     void ensurePath(const StorePath & path) override
     { unsupported("ensurePath"); }
 
diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc
index bccd77b68..a79b2da44 100644
--- a/src/libstore/local-store.cc
+++ b/src/libstore/local-store.cc
@@ -785,17 +785,21 @@ StorePathSet LocalStore::queryValidDerivers(const StorePath & path)
 }
 
 
-OutputPathMap LocalStore::queryDerivationOutputMap(const StorePath & path)
+std::map<std::string, std::optional<StorePath>> LocalStore::queryPartialDerivationOutputMap(const StorePath & path)
 {
-    return retrySQLite<OutputPathMap>([&]() {
+    std::map<std::string, std::optional<StorePath>> outputs;
+    BasicDerivation drv = readDerivation(path);
+    for (auto & [outName, _] : drv.outputs) {
+        outputs.insert_or_assign(outName, std::nullopt);
+    }
+    return retrySQLite<std::map<std::string, std::optional<StorePath>>>([&]() {
         auto state(_state.lock());
 
         auto useQueryDerivationOutputs(state->stmtQueryDerivationOutputs.use()
             (queryValidPathId(*state, path)));
 
-        OutputPathMap outputs;
         while (useQueryDerivationOutputs.next())
-            outputs.emplace(
+            outputs.insert_or_assign(
                 useQueryDerivationOutputs.getStr(0),
                 parseStorePath(useQueryDerivationOutputs.getStr(1))
             );
diff --git a/src/libstore/local-store.hh b/src/libstore/local-store.hh
index 31e6587ac..5af12c2b2 100644
--- a/src/libstore/local-store.hh
+++ b/src/libstore/local-store.hh
@@ -133,7 +133,7 @@ public:
 
     StorePathSet queryValidDerivers(const StorePath & path) override;
 
-    OutputPathMap queryDerivationOutputMap(const StorePath & path) override;
+    std::map<std::string, std::optional<StorePath>> queryPartialDerivationOutputMap(const StorePath & path) override;
 
     std::optional<StorePath> queryPathFromHashPart(const std::string & hashPart) override;
 
diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index 8dcc1d710..adba17c5e 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -31,7 +31,6 @@ template<> StorePathSet readStorePaths(const Store & store, Source & from)
     return paths;
 }
 
-
 void writeStorePaths(const Store & store, Sink & out, const StorePathSet & paths)
 {
     out << paths.size();
@@ -39,6 +38,7 @@ void writeStorePaths(const Store & store, Sink & out, const StorePathSet & paths
         out << store.printStorePath(i);
 }
 
+
 StorePathCAMap readStorePathCAMap(const Store & store, Source & from)
 {
     StorePathCAMap paths;
@@ -57,30 +57,36 @@ void writeStorePathCAMap(const Store & store, Sink & out, const StorePathCAMap &
     }
 }
 
-std::map<string, StorePath> readOutputPathMap(const Store & store, Source & from)
+
+namespace worker_proto {
+
+StorePath read(const Store & store, Source & from, Phantom<StorePath> _)
 {
-    std::map<string, StorePath> pathMap;
-    auto rawInput = readStrings<Strings>(from);
-    if (rawInput.size() % 2)
-        throw Error("got an odd number of elements from the daemon when trying to read a output path map");
-    auto curInput = rawInput.begin();
-    while (curInput != rawInput.end()) {
-        auto thisKey = *curInput++;
-        auto thisValue = *curInput++;
-        pathMap.emplace(thisKey, store.parseStorePath(thisValue));
-    }
-    return pathMap;
+    return store.parseStorePath(readString(from));
 }
 
-void writeOutputPathMap(const Store & store, Sink & out, const std::map<string, StorePath> & pathMap)
+void write(const Store & store, Sink & out, const StorePath & storePath)
 {
-    out << 2*pathMap.size();
-    for (auto & i : pathMap) {
-        out << i.first;
-        out << store.printStorePath(i.second);
-    }
+    out << store.printStorePath(storePath);
 }
 
+
+template<>
+std::optional<StorePath> read(const Store & store, Source & from, Phantom<std::optional<StorePath>> _)
+{
+    auto s = readString(from);
+    return s == "" ? std::optional<StorePath> {} : store.parseStorePath(s);
+}
+
+template<>
+void write(const Store & store, Sink & out, const std::optional<StorePath> & storePathOpt)
+{
+    out << (storePathOpt ? store.printStorePath(*storePathOpt) : "");
+}
+
+}
+
+
 /* TODO: Separate these store impls into different files, give them better names */
 RemoteStore::RemoteStore(const Params & params)
     : Store(params)
@@ -468,12 +474,12 @@ StorePathSet RemoteStore::queryDerivationOutputs(const StorePath & path)
 }
 
 
-OutputPathMap RemoteStore::queryDerivationOutputMap(const StorePath & path)
+std::map<std::string, std::optional<StorePath>> RemoteStore::queryPartialDerivationOutputMap(const StorePath & path)
 {
     auto conn(getConnection());
     conn->to << wopQueryDerivationOutputMap << printStorePath(path);
     conn.processStderr();
-    return readOutputPathMap(*this, conn->from);
+    return worker_proto::read(*this, conn->from, Phantom<std::map<std::string, std::optional<StorePath>>> {});
 
 }
 
diff --git a/src/libstore/remote-store.hh b/src/libstore/remote-store.hh
index 72d2a6689..b319e774b 100644
--- a/src/libstore/remote-store.hh
+++ b/src/libstore/remote-store.hh
@@ -51,7 +51,7 @@ public:
 
     StorePathSet queryDerivationOutputs(const StorePath & path) override;
 
-    OutputPathMap queryDerivationOutputMap(const StorePath & path) override;
+    std::map<std::string, std::optional<StorePath>> queryPartialDerivationOutputMap(const StorePath & path) override;
     std::optional<StorePath> queryPathFromHashPart(const std::string & hashPart) override;
 
     StorePathSet querySubstitutablePaths(const StorePathSet & paths) override;
diff --git a/src/libstore/store-api.cc b/src/libstore/store-api.cc
index 539a66c98..b8ce71f3c 100644
--- a/src/libstore/store-api.cc
+++ b/src/libstore/store-api.cc
@@ -359,6 +359,17 @@ bool Store::PathInfoCacheValue::isKnownNow()
     return std::chrono::steady_clock::now() < time_point + ttl;
 }
 
+OutputPathMap Store::queryDerivationOutputMap(const StorePath & path) {
+    auto resp = queryPartialDerivationOutputMap(path);
+    OutputPathMap result;
+    for (auto & [outName, optOutPath] : resp) {
+        if (!optOutPath)
+            throw Error("output '%s' has no store path mapped to it", outName);
+        result.insert_or_assign(outName, *optOutPath);
+    }
+    return result;
+}
+
 StorePathSet Store::queryDerivationOutputs(const StorePath & path)
 {
     auto outputMap = this->queryDerivationOutputMap(path);
diff --git a/src/libstore/store-api.hh b/src/libstore/store-api.hh
index 128682e7a..0ec14b5f2 100644
--- a/src/libstore/store-api.hh
+++ b/src/libstore/store-api.hh
@@ -343,9 +343,15 @@ public:
     /* Query the outputs of the derivation denoted by `path'. */
     virtual StorePathSet queryDerivationOutputs(const StorePath & path);
 
-    /* Query the mapping outputName=>outputPath for the given derivation */
-    virtual OutputPathMap queryDerivationOutputMap(const StorePath & path)
-    { unsupported("queryDerivationOutputMap"); }
+    /* Query the mapping outputName => outputPath for the given derivation. All
+       outputs are mentioned so ones mising the mapping are mapped to
+       `std::nullopt`.  */
+    virtual std::map<std::string, std::optional<StorePath>> queryPartialDerivationOutputMap(const StorePath & path)
+    { unsupported("queryPartialDerivationOutputMap"); }
+
+    /* Query the mapping outputName=>outputPath for the given derivation.
+       Assume every output has a mapping and throw an exception otherwise. */
+    OutputPathMap queryDerivationOutputMap(const StorePath & path);
 
     /* Query the full store path given the hash part of a valid store
        path, or empty if the path doesn't exist. */
diff --git a/src/libstore/worker-protocol.hh b/src/libstore/worker-protocol.hh
index 5eddaff56..13cf8d4ab 100644
--- a/src/libstore/worker-protocol.hh
+++ b/src/libstore/worker-protocol.hh
@@ -70,10 +70,84 @@ template<class T> T readStorePaths(const Store & store, Source & from);
 
 void writeStorePaths(const Store & store, Sink & out, const StorePathSet & paths);
 
+/* To guide overloading */
+template<typename T>
+struct Phantom {};
+
+
+namespace worker_proto {
+/* FIXME maybe move more stuff inside here */
+
+StorePath read(const Store & store, Source & from, Phantom<StorePath> _);
+void write(const Store & store, Sink & out, const StorePath & storePath);
+
+template<typename T>
+std::map<std::string, T> read(const Store & store, Source & from, Phantom<std::map<std::string, T>> _);
+template<typename T>
+void write(const Store & store, Sink & out, const std::map<string, T> & resMap);
+template<typename T>
+std::optional<T> read(const Store & store, Source & from, Phantom<std::optional<T>> _);
+template<typename T>
+void write(const Store & store, Sink & out, const std::optional<T> & optVal);
+
+/* Specialization which uses and empty string for the empty case, taking
+   advantage of the fact StorePaths always serialize to a non-empty string.
+   This is done primarily for backwards compatability, so that StorePath <=
+   std::optional<StorePath>, where <= is the compatability partial order.
+ */
+template<>
+void write(const Store & store, Sink & out, const std::optional<StorePath> & optVal);
+
+template<typename T>
+std::map<std::string, T> read(const Store & store, Source & from, Phantom<std::map<std::string, T>> _)
+{
+    std::map<string, T> resMap;
+    auto size = (size_t)readInt(from);
+    while (size--) {
+        auto thisKey = readString(from);
+        resMap.insert_or_assign(std::move(thisKey), nix::worker_proto::read(store, from, Phantom<T> {}));
+    }
+    return resMap;
+}
+
+template<typename T>
+void write(const Store & store, Sink & out, const std::map<string, T> & resMap)
+{
+    out << resMap.size();
+    for (auto & i : resMap) {
+        out << i.first;
+        nix::worker_proto::write(store, out, i.second);
+    }
+}
+
+template<typename T>
+std::optional<T> read(const Store & store, Source & from, Phantom<std::optional<T>> _)
+{
+    auto tag = readNum<uint8_t>(from);
+    switch (tag) {
+    case 0:
+        return std::nullopt;
+    case 1:
+        return nix::worker_proto::read(store, from, Phantom<T> {});
+    default:
+        throw Error("got an invalid tag bit for std::optional: %#04x", tag);
+    }
+}
+
+template<typename T>
+void write(const Store & store, Sink & out, const std::optional<T> & optVal)
+{
+    out << (optVal ? 1 : 0);
+    if (optVal)
+        nix::worker_proto::write(store, out, *optVal);
+}
+
+
+}
+
+
 StorePathCAMap readStorePathCAMap(const Store & store, Source & from);
 
 void writeStorePathCAMap(const Store & store, Sink & out, const StorePathCAMap & paths);
 
-void writeOutputPathMap(const Store & store, Sink & out, const OutputPathMap & paths);
-
 }
diff --git a/src/nix/develop.cc b/src/nix/develop.cc
index 434088da7..8a14e45c9 100644
--- a/src/nix/develop.cc
+++ b/src/nix/develop.cc
@@ -138,7 +138,7 @@ StorePath getDerivationEnvironment(ref<Store> store, const StorePath & drvPath)
                 .path = shellOutPath
             } });
     drv.env["out"] = store->printStorePath(shellOutPath);
-    auto shellDrvPath2 = writeDerivation(store, drv);
+    auto shellDrvPath2 = writeDerivation(*store, drv);
 
     /* Build the derivation. */
     store->buildPaths({{shellDrvPath2}});
@@ -246,7 +246,7 @@ struct CmdDevelop : Common, MixEnvironment
         addFlag({
             .longName = "command",
             .shortName = 'c',
-            .description = "command and arguments to be executed insted of an interactive shell",
+            .description = "command and arguments to be executed instead of an interactive shell",
             .labels = {"command", "args"},
             .handler = {[&](std::vector<std::string> ss) {
                 if (ss.empty()) throw UsageError("--command requires at least one argument");
diff --git a/tests/build-hook-ca.nix b/tests/build-hook-ca.nix
new file mode 100644
index 000000000..98db473fc
--- /dev/null
+++ b/tests/build-hook-ca.nix
@@ -0,0 +1,45 @@
+{ busybox }:
+
+with import ./config.nix;
+
+let
+
+  mkDerivation = args:
+    derivation ({
+      inherit system;
+      builder = busybox;
+      args = ["sh" "-e" args.builder or (builtins.toFile "builder-${args.name}.sh" "if [ -e .attrs.sh ]; then source .attrs.sh; fi; eval \"$buildCommand\"")];
+      outputHashMode = "recursive";
+      outputHashAlgo = "sha256";
+    } // removeAttrs args ["builder" "meta"])
+    // { meta = args.meta or {}; };
+
+  input1 = mkDerivation {
+    shell = busybox;
+    name = "build-remote-input-1";
+    buildCommand = "echo FOO > $out";
+    requiredSystemFeatures = ["foo"];
+    outputHash = "sha256-FePFYIlMuycIXPZbWi7LGEiMmZSX9FMbaQenWBzm1Sc=";
+  };
+
+  input2 = mkDerivation {
+    shell = busybox;
+    name = "build-remote-input-2";
+    buildCommand = "echo BAR > $out";
+    requiredSystemFeatures = ["bar"];
+    outputHash = "sha256-XArauVH91AVwP9hBBQNlkX9ccuPpSYx9o0zeIHb6e+Q=";
+  };
+
+in
+
+  mkDerivation {
+    shell = busybox;
+    name = "build-remote";
+    buildCommand =
+      ''
+        read x < ${input1}
+        read y < ${input2}
+        echo "$x $y" > $out
+      '';
+    outputHash = "sha256-3YGhlOfbGUm9hiPn2teXXTT8M1NEpDFvfXkxMaJRld0=";
+  }
diff --git a/tests/build-remote-content-addressed-fixed.sh b/tests/build-remote-content-addressed-fixed.sh
new file mode 100644
index 000000000..1408a19d5
--- /dev/null
+++ b/tests/build-remote-content-addressed-fixed.sh
@@ -0,0 +1,5 @@
+source common.sh
+
+file=build-hook-ca.nix
+
+source build-remote.sh
diff --git a/tests/build-remote-input-addressed.sh b/tests/build-remote-input-addressed.sh
new file mode 100644
index 000000000..b34caa061
--- /dev/null
+++ b/tests/build-remote-input-addressed.sh
@@ -0,0 +1,5 @@
+source common.sh
+
+file=build-hook.nix
+
+source build-remote.sh
diff --git a/tests/build-remote.sh b/tests/build-remote.sh
index 8833f4698..ca6d1de09 100644
--- a/tests/build-remote.sh
+++ b/tests/build-remote.sh
@@ -1,5 +1,3 @@
-source common.sh
-
 if ! canUseSandbox; then exit; fi
 if ! [[ $busybox =~ busybox ]]; then exit; fi
 
@@ -19,7 +17,7 @@ builders=(
 # Note: ssh://localhost bypasses ssh, directly invoking nix-store as a
 # child process. This allows us to test LegacySSHStore::buildDerivation().
 # ssh-ng://... likewise allows us to test RemoteStore::buildDerivation().
-nix build -L -v -f build-hook.nix -o $TEST_ROOT/result --max-jobs 0 \
+nix build -L -v -f $file -o $TEST_ROOT/result --max-jobs 0 \
   --arg busybox $busybox \
   --store $TEST_ROOT/machine0 \
   --builders "$(join_by '; ' "${builders[@]}")"
diff --git a/tests/local.mk b/tests/local.mk
index 5c77b9bb7..53035da41 100644
--- a/tests/local.mk
+++ b/tests/local.mk
@@ -14,7 +14,7 @@ nix_tests = \
   placeholders.sh nix-shell.sh \
   linux-sandbox.sh \
   build-dry.sh \
-  build-remote.sh \
+  build-remote-input-addressed.sh \
   nar-access.sh \
   structured-attrs.sh \
   fetchGit.sh \
@@ -34,6 +34,7 @@ nix_tests = \
   recursive.sh \
   flakes.sh
   # parallel.sh
+  # build-remote-content-addressed-fixed.sh \
 
 install-tests += $(foreach x, $(nix_tests), tests/$(x))