diff --git a/src/libexpr/primops.cc b/src/libexpr/primops.cc
index e6391f509..c3d01eea3 100644
--- a/src/libexpr/primops.cc
+++ b/src/libexpr/primops.cc
@@ -64,7 +64,7 @@ void EvalState::realiseContext(const PathSet & context)
        paths. */
     if (allowedPaths) {
         for (auto & [drvPath, outputs] : drvs) {
-            auto outputPaths = store->queryDerivationOutputMapAssumeTotal(drvPath);
+            auto outputPaths = store->queryDerivationOutputMap(drvPath);
             for (auto & outputName : outputs) {
                 if (outputPaths.count(outputName) == 0)
                     throw Error("derivation '%s' does not have an output named '%s'",
diff --git a/src/libstore/build.cc b/src/libstore/build.cc
index db93d6092..ba28e78c8 100644
--- a/src/libstore/build.cc
+++ b/src/libstore/build.cc
@@ -1041,8 +1041,8 @@ private:
     /* Wrappers around the corresponding Store methods that first consult the
        derivation.  This is currently needed because when there is no drv file
        there also is no DB entry. */
-    std::map<std::string, std::optional<StorePath>> queryDerivationOutputMap();
-    OutputPathMap queryDerivationOutputMapAssumeTotal();
+    std::map<std::string, std::optional<StorePath>> queryPartialDerivationOutputMap();
+    OutputPathMap queryDerivationOutputMap();
 
     /* Return the set of (in)valid paths. */
     void checkPathValidity();
@@ -1367,7 +1367,7 @@ void DerivationGoal::repairClosure()
        that produced those outputs. */
 
     /* Get the output closure. */
-    auto outputs = queryDerivationOutputMapAssumeTotal();
+    auto outputs = queryDerivationOutputMap();
     StorePathSet outputClosure;
     for (auto & i : outputs) {
         if (!wantOutput(i.first, wantedOutputs)) continue;
@@ -1386,7 +1386,7 @@ void DerivationGoal::repairClosure()
     std::map<StorePath, StorePath> outputsToDrv;
     for (auto & i : inputClosure)
         if (i.isDerivation()) {
-            auto depOutputs = worker.store.queryDerivationOutputMap(i);
+            auto depOutputs = worker.store.queryPartialDerivationOutputMap(i);
             for (auto & j : depOutputs)
                 if (j.second)
                     outputsToDrv.insert_or_assign(*j.second, i);
@@ -1457,7 +1457,7 @@ void DerivationGoal::inputsRealised()
                `i' as input paths.  Only add the closures of output paths
                that are specified as inputs. */
             assert(worker.store.isValidPath(drvPath));
-            auto outputs = worker.store.queryDerivationOutputMap(depDrvPath);
+            auto outputs = worker.store.queryPartialDerivationOutputMap(depDrvPath);
             for (auto & j : wantedDepOutputs) {
                 if (outputs.count(j) > 0) {
                     auto optRealizedInput = outputs.at(j);
@@ -2912,11 +2912,11 @@ struct RestrictedStore : public LocalFSStore
     void queryReferrers(const StorePath & path, StorePathSet & referrers) override
     { }
 
-    std::map<std::string, std::optional<StorePath>> queryDerivationOutputMap(const StorePath & path) override
+    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->queryDerivationOutputMap(path);
+        return next->queryPartialDerivationOutputMap(path);
     }
 
     std::optional<StorePath> queryPathFromHashPart(const std::string & hashPart) override
@@ -2979,7 +2979,7 @@ struct RestrictedStore : public LocalFSStore
 
         for (auto & path : paths) {
             if (!path.path.isDerivation()) continue;
-            auto outputs = next->queryDerivationOutputMapAssumeTotal(path.path);
+            auto outputs = next->queryDerivationOutputMap(path.path);
             for (auto & output : outputs)
                 if (wantOutput(output.first, path.outputs))
                     newPaths.insert(output.second);
@@ -4548,7 +4548,7 @@ void DerivationGoal::flushLine()
 }
 
 
-std::map<std::string, std::optional<StorePath>> DerivationGoal::queryDerivationOutputMap()
+std::map<std::string, std::optional<StorePath>> DerivationGoal::queryPartialDerivationOutputMap()
 {
     if (drv->type() != DerivationType::CAFloating) {
         std::map<std::string, std::optional<StorePath>> res;
@@ -4556,11 +4556,11 @@ std::map<std::string, std::optional<StorePath>> DerivationGoal::queryDerivationO
             res.insert_or_assign(name, output.pathOpt(worker.store, drv->name, name));
         return res;
     } else {
-        return worker.store.queryDerivationOutputMap(drvPath);
+        return worker.store.queryPartialDerivationOutputMap(drvPath);
     }
 }
 
-OutputPathMap DerivationGoal::queryDerivationOutputMapAssumeTotal()
+OutputPathMap DerivationGoal::queryDerivationOutputMap()
 {
     if (drv->type() != DerivationType::CAFloating) {
         OutputPathMap res;
@@ -4568,7 +4568,7 @@ OutputPathMap DerivationGoal::queryDerivationOutputMapAssumeTotal()
             res.insert_or_assign(name, *output.second);
         return res;
     } else {
-        return worker.store.queryDerivationOutputMapAssumeTotal(drvPath);
+        return worker.store.queryDerivationOutputMap(drvPath);
     }
 }
 
@@ -4576,7 +4576,7 @@ OutputPathMap DerivationGoal::queryDerivationOutputMapAssumeTotal()
 void DerivationGoal::checkPathValidity()
 {
     bool checkHash = buildMode == bmRepair;
-    for (auto & i : queryDerivationOutputMap()) {
+    for (auto & i : queryPartialDerivationOutputMap()) {
         InitialOutputStatus status {
             .wanted = wantOutput(i.first, wantedOutputs),
         };
diff --git a/src/libstore/daemon.cc b/src/libstore/daemon.cc
index 046dfbe6e..a4eeebaab 100644
--- a/src/libstore/daemon.cc
+++ b/src/libstore/daemon.cc
@@ -325,7 +325,7 @@ static void performOp(TunnelLogger * logger, ref<Store> store,
     case wopQueryDerivationOutputMap: {
         auto path = store->parseStorePath(readString(from));
         logger->startWork();
-        auto outputs = store->queryDerivationOutputMap(path);
+        auto outputs = store->queryPartialDerivationOutputMap(path);
         logger->stopWork();
         worker_proto::write(*store, to, outputs);
         break;
diff --git a/src/libstore/local-store.cc b/src/libstore/local-store.cc
index 634a8046b..0086bb13e 100644
--- a/src/libstore/local-store.cc
+++ b/src/libstore/local-store.cc
@@ -803,7 +803,7 @@ StorePathSet LocalStore::queryValidDerivers(const StorePath & path)
 }
 
 
-std::map<std::string, std::optional<StorePath>> LocalStore::queryDerivationOutputMap(const StorePath & path)
+std::map<std::string, std::optional<StorePath>> LocalStore::queryPartialDerivationOutputMap(const StorePath & path)
 {
     std::map<std::string, std::optional<StorePath>> outputs;
     BasicDerivation drv = readDerivation(path);
diff --git a/src/libstore/local-store.hh b/src/libstore/local-store.hh
index bf4016b13..4d99e5cf6 100644
--- a/src/libstore/local-store.hh
+++ b/src/libstore/local-store.hh
@@ -133,7 +133,7 @@ public:
 
     StorePathSet queryValidDerivers(const StorePath & path) override;
 
-    std::map<std::string, std::optional<StorePath>> 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/misc.cc b/src/libstore/misc.cc
index 9024fb2bd..da3981696 100644
--- a/src/libstore/misc.cc
+++ b/src/libstore/misc.cc
@@ -207,7 +207,7 @@ void Store::queryMissing(const std::vector<StorePathWithOutputs> & targets,
             /* true for regular derivations, and CA derivations for which we
                have a trust mapping for all wanted outputs. */
             auto knownOutputPaths = true;
-            for (auto & [outputName, pathOpt] : queryDerivationOutputMap(path.path)) {
+            for (auto & [outputName, pathOpt] : queryPartialDerivationOutputMap(path.path)) {
                 if (!pathOpt) {
                     knownOutputPaths = false;
                     break;
diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index 1b1260900..adba17c5e 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -474,7 +474,7 @@ StorePathSet RemoteStore::queryDerivationOutputs(const StorePath & path)
 }
 
 
-std::map<std::string, std::optional<StorePath>> 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);
diff --git a/src/libstore/remote-store.hh b/src/libstore/remote-store.hh
index 4b093ad3b..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;
 
-    std::map<std::string, std::optional<StorePath>> 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 1f10f0663..09608646e 100644
--- a/src/libstore/store-api.cc
+++ b/src/libstore/store-api.cc
@@ -366,8 +366,8 @@ bool Store::PathInfoCacheValue::isKnownNow()
     return std::chrono::steady_clock::now() < time_point + ttl;
 }
 
-OutputPathMap Store::queryDerivationOutputMapAssumeTotal(const StorePath & path) {
-    auto resp = queryDerivationOutputMap(path);
+OutputPathMap Store::queryDerivationOutputMap(const StorePath & path) {
+    auto resp = queryPartialDerivationOutputMap(path);
     OutputPathMap result;
     for (auto & [outName, optOutPath] : resp) {
         if (!optOutPath)
@@ -379,7 +379,7 @@ OutputPathMap Store::queryDerivationOutputMapAssumeTotal(const StorePath & path)
 
 StorePathSet Store::queryDerivationOutputs(const StorePath & path)
 {
-    auto outputMap = this->queryDerivationOutputMapAssumeTotal(path);
+    auto outputMap = this->queryDerivationOutputMap(path);
     StorePathSet outputPaths;
     for (auto & i: outputMap) {
         outputPaths.emplace(std::move(i.second));
diff --git a/src/libstore/store-api.hh b/src/libstore/store-api.hh
index 58e9b16c6..6583413a6 100644
--- a/src/libstore/store-api.hh
+++ b/src/libstore/store-api.hh
@@ -348,12 +348,12 @@ public:
     /* 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>> queryDerivationOutputMap(const StorePath & path)
-    { unsupported("queryDerivationOutputMap"); }
+    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 queryDerivationOutputMapAssumeTotal(const StorePath & path);
+    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/nix-build/nix-build.cc b/src/nix-build/nix-build.cc
index be73ea724..ea4b407e7 100755
--- a/src/nix-build/nix-build.cc
+++ b/src/nix-build/nix-build.cc
@@ -518,7 +518,7 @@ static void _main(int argc, char * * argv)
             if (counter)
                 drvPrefix += fmt("-%d", counter + 1);
 
-            auto builtOutputs = store->queryDerivationOutputMapAssumeTotal(drvPath);
+            auto builtOutputs = store->queryDerivationOutputMap(drvPath);
 
             for (auto & outputName : wantedOutputs) {
                 auto outputPath = builtOutputs.at(outputName);
diff --git a/src/nix-env/nix-env.cc b/src/nix-env/nix-env.cc
index d36804658..ddd036070 100644
--- a/src/nix-env/nix-env.cc
+++ b/src/nix-env/nix-env.cc
@@ -381,7 +381,7 @@ static void queryInstSources(EvalState & state,
 
                 if (path.isDerivation()) {
                     elem.setDrvPath(state.store->printStorePath(path));
-                    auto outputs = state.store->queryDerivationOutputMapAssumeTotal(path);
+                    auto outputs = state.store->queryDerivationOutputMap(path);
                     elem.setOutPath(state.store->printStorePath(outputs.at("out")));
                     if (name.size() >= drvExtension.size() &&
                         string(name, name.size() - drvExtension.size()) == drvExtension)
diff --git a/src/nix-store/nix-store.cc b/src/nix-store/nix-store.cc
index cfe97f061..ce5de2ae5 100644
--- a/src/nix-store/nix-store.cc
+++ b/src/nix-store/nix-store.cc
@@ -65,7 +65,7 @@ static PathSet realisePath(StorePathWithOutputs path, bool build = true)
 
     if (path.path.isDerivation()) {
         if (build) store->buildPaths({path});
-        auto outputPaths = store->queryDerivationOutputMapAssumeTotal(path.path);
+        auto outputPaths = store->queryDerivationOutputMap(path.path);
         Derivation drv = store->derivationFromPath(path.path);
         rootNr++;
 
diff --git a/src/nix/build.cc b/src/nix/build.cc
index a66e8dac4..cb12ee933 100644
--- a/src/nix/build.cc
+++ b/src/nix/build.cc
@@ -74,7 +74,7 @@ struct CmdBuild : InstallablesCommand, MixDryRun, MixProfile
                             store2->addPermRoot(bo.path, absPath(symlink), true);
                         },
                         [&](BuildableFromDrv bfd) {
-                            auto builtOutputs = store->queryDerivationOutputMapAssumeTotal(bfd.drvPath);
+                            auto builtOutputs = store->queryDerivationOutputMap(bfd.drvPath);
                             for (auto & output : builtOutputs) {
                                 std::string symlink = outLink;
                                 if (i) symlink += fmt("-%d", i);
diff --git a/src/nix/repl.cc b/src/nix/repl.cc
index 0224f891d..2bde85cb7 100644
--- a/src/nix/repl.cc
+++ b/src/nix/repl.cc
@@ -488,7 +488,7 @@ bool NixRepl::processLine(string line)
                but doing it in a child makes it easier to recover from
                problems / SIGINT. */
             if (runProgram(settings.nixBinDir + "/nix", Strings{"build", "--no-link", drvPath}) == 0) {
-                auto outputs = state->store->queryDerivationOutputMapAssumeTotal(state->store->parseStorePath(drvPath));
+                auto outputs = state->store->queryDerivationOutputMap(state->store->parseStorePath(drvPath));
                 std::cout << std::endl << "this derivation produced the following outputs:" << std::endl;
                 for (auto & i : outputs)
                     std::cout << fmt("  %s -> %s\n", i.first, state->store->printStorePath(i.second));