Fix libpqxx 7.10.1 API compatibility

- Replace deprecated exec_params/exec_params0 calls with exec()
- Wrap all parameterized queries with pqxx::params{}
- Add .no_rows()/.one_row() to exec calls that don't return results

src/hydra-evaluator/hydra-evaluator.cc

@@ -180,10 +180,8 @@ struct Evaluator
         {
             auto conn(dbPool.get());
             pqxx::work txn(*conn);
-            txn.exec_params0
+            txn.exec("update Jobsets set startTime = $1 where id = $2",
-                ("update Jobsets set startTime = $1 where id = $2",
+                 pqxx::params{now, jobset.name.id}).no_rows();
-                 now,
-                 jobset.name.id);
             txn.commit();
         }
 
@@ -234,7 +232,7 @@ struct Evaluator
             pqxx::work txn(*conn);
 
             if (jobset.evaluation_style == EvaluationStyle::ONE_AT_A_TIME) {
-                auto evaluation_res = txn.exec_params
+                auto evaluation_res = txn.exec
                     ("select id from JobsetEvals "
                      "where jobset_id = $1 "
                      "order by id desc limit 1"
@@ -250,7 +248,7 @@ struct Evaluator
 
                 auto evaluation_id = evaluation_res[0][0].as<int>();
 
-                auto unfinished_build_res = txn.exec_params
+                auto unfinished_build_res = txn.exec
                     ("select id from Builds "
                      "join JobsetEvalMembers "
                      "    on (JobsetEvalMembers.build = Builds.id) "
@@ -420,21 +418,18 @@ struct Evaluator
                             /* Clear the trigger time to prevent this
                                jobset from getting stuck in an endless
                                failing eval loop. */
-                            txn.exec_params0
+                            txn.exec
                                 ("update Jobsets set triggerTime = null where id = $1 and startTime is not null and triggerTime <= startTime",
-                                 jobset.name.id);
+                                 jobset.name.id).no_rows();
 
                             /* Clear the start time. */
-                            txn.exec_params0
+                            txn.exec
                                 ("update Jobsets set startTime = null where id = $1",
-                                 jobset.name.id);
+                                 jobset.name.id).no_rows();
 
                             if (!WIFEXITED(status) || WEXITSTATUS(status) > 1) {
-                                txn.exec_params0
+                                txn.exec("update Jobsets set errorMsg = $1, lastCheckedTime = $2, errorTime = $2, fetchErrorMsg = null where id = $3",
-                                    ("update Jobsets set errorMsg = $1, lastCheckedTime = $2, errorTime = $2, fetchErrorMsg = null where id = $3",
+                                     pqxx::params{fmt("evaluation %s", statusToString(status)), now, jobset.name.id}).no_rows();
-                                     fmt("evaluation %s", statusToString(status)),
-                                     now,
-                                     jobset.name.id);
                             }
 
                             txn.commit();
@@ -459,7 +454,7 @@ struct Evaluator
     {
         auto conn(dbPool.get());
         pqxx::work txn(*conn);
-        txn.exec("update Jobsets set startTime = null");
+        txn.exec("update Jobsets set startTime = null").no_rows();
         txn.commit();
     }
 

src/hydra-queue-runner/builder.cc

@@ -458,13 +458,12 @@ void State::failStep(
             for (auto & build : indirect) {
                 if (build->finishedInDB) continue;
                 printError("marking build %1% as failed", build->id);
-                txn.exec_params0
+                txn.exec("update Builds set finished = 1, buildStatus = $2, startTime = $3, stopTime = $4, isCachedBuild = $5, notificationPendingSince = $4 where id = $1 and finished = 0",
-                    ("update Builds set finished = 1, buildStatus = $2, startTime = $3, stopTime = $4, isCachedBuild = $5, notificationPendingSince = $4 where id = $1 and finished = 0",
+                     pqxx::params{build->id,
-                     build->id,
                      (int) (build->drvPath != step->drvPath && result.buildStatus() == bsFailed ? bsDepFailed : result.buildStatus()),
                      result.startTime,
                      result.stopTime,
-                     result.stepStatus == bsCachedFailure ? 1 : 0);
+                     result.stepStatus == bsCachedFailure ? 1 : 0}).no_rows();
                 nrBuildsDone++;
             }
 
@@ -473,7 +472,7 @@ void State::failStep(
             if (result.stepStatus != bsCachedFailure && result.canCache)
                 for (auto & i : step->drv->outputsAndOptPaths(*localStore))
                     if (i.second.second)
-                       txn.exec_params0("insert into FailedPaths values ($1)", localStore->printStorePath(*i.second.second));
+                       txn.exec("insert into FailedPaths values ($1)", pqxx::params{localStore->printStorePath(*i.second.second)}).no_rows();
 
             txn.commit();
         }

src/hydra-queue-runner/hydra-queue-runner.cc

@@ -276,17 +276,16 @@ void State::monitorMachinesFile()
 void State::clearBusy(Connection & conn, time_t stopTime)
 {
     pqxx::work txn(conn);
-    txn.exec_params0
+    txn.exec("update BuildSteps set busy = 0, status = $1, stopTime = $2 where busy != 0",
-        ("update BuildSteps set busy = 0, status = $1, stopTime = $2 where busy != 0",
+         pqxx::params{(int) bsAborted,
-         (int) bsAborted,
+         stopTime != 0 ? std::make_optional(stopTime) : std::nullopt}).no_rows();
-         stopTime != 0 ? std::make_optional(stopTime) : std::nullopt);
     txn.commit();
 }
 
 
 unsigned int State::allocBuildStep(pqxx::work & txn, BuildID buildId)
 {
-    auto res = txn.exec_params1("select max(stepnr) from BuildSteps where build = $1", buildId);
+    auto res = txn.exec("select max(stepnr) from BuildSteps where build = $1", buildId).one_row();
     return res[0].is_null() ? 1 : res[0].as<int>() + 1;
 }
 
@@ -297,9 +296,8 @@ unsigned int State::createBuildStep(pqxx::work & txn, time_t startTime, BuildID
  restart:
     auto stepNr = allocBuildStep(txn, buildId);
 
-    auto r = txn.exec_params
+    auto r = txn.exec("insert into BuildSteps (build, stepnr, type, drvPath, busy, startTime, system, status, propagatedFrom, errorMsg, stopTime, machine) values ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12) on conflict do nothing",
-        ("insert into BuildSteps (build, stepnr, type, drvPath, busy, startTime, system, status, propagatedFrom, errorMsg, stopTime, machine) values ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12) on conflict do nothing",
+         pqxx::params{buildId,
-         buildId,
          stepNr,
          0, // == build
          localStore->printStorePath(step->drvPath),
@@ -310,17 +308,16 @@ unsigned int State::createBuildStep(pqxx::work & txn, time_t startTime, BuildID
          propagatedFrom != 0 ? std::make_optional(propagatedFrom) : std::nullopt, // internal::params
          errorMsg != "" ? std::make_optional(errorMsg) : std::nullopt,
          startTime != 0 && status != bsBusy ? std::make_optional(startTime) : std::nullopt,
-         machine);
+         machine});
 
     if (r.affected_rows() == 0) goto restart;
 
     for (auto & [name, output] : getDestStore()->queryPartialDerivationOutputMap(step->drvPath, &*localStore))
-        txn.exec_params0
+        txn.exec("insert into BuildStepOutputs (build, stepnr, name, path) values ($1, $2, $3, $4)",
-            ("insert into BuildStepOutputs (build, stepnr, name, path) values ($1, $2, $3, $4)",
+            pqxx::params{buildId, stepNr, name,
-            buildId, stepNr, name,
             output
                 ? std::optional { localStore->printStorePath(*output)}
-                : std::nullopt);
+                : std::nullopt}).no_rows();
 
     if (status == bsBusy)
         txn.exec(fmt("notify step_started, '%d\t%d'", buildId, stepNr));
@@ -331,11 +328,10 @@ unsigned int State::createBuildStep(pqxx::work & txn, time_t startTime, BuildID
 
 void State::updateBuildStep(pqxx::work & txn, BuildID buildId, unsigned int stepNr, StepState stepState)
 {
-    if (txn.exec_params
+    if (txn.exec("update BuildSteps set busy = $1 where build = $2 and stepnr = $3 and busy != 0 and status is null",
-        ("update BuildSteps set busy = $1 where build = $2 and stepnr = $3 and busy != 0 and status is null",
+         pqxx::params{(int) stepState,
-         (int) stepState,
          buildId,
-         stepNr).affected_rows() != 1)
+         stepNr}).affected_rows() != 1)
         throw Error("step %d of build %d is in an unexpected state", stepNr, buildId);
 }
 
@@ -345,29 +341,27 @@ void State::finishBuildStep(pqxx::work & txn, const RemoteResult & result,
 {
     assert(result.startTime);
     assert(result.stopTime);
-    txn.exec_params0
+    txn.exec("update BuildSteps set busy = 0, status = $1, errorMsg = $4, startTime = $5, stopTime = $6, machine = $7, overhead = $8, timesBuilt = $9, isNonDeterministic = $10 where build = $2 and stepnr = $3",
-        ("update BuildSteps set busy = 0, status = $1, errorMsg = $4, startTime = $5, stopTime = $6, machine = $7, overhead = $8, timesBuilt = $9, isNonDeterministic = $10 where build = $2 and stepnr = $3",
+         pqxx::params{(int) result.stepStatus, buildId, stepNr,
-         (int) result.stepStatus, buildId, stepNr,
          result.errorMsg != "" ? std::make_optional(result.errorMsg) : std::nullopt,
          result.startTime, result.stopTime,
          machine != "" ? std::make_optional(machine) : std::nullopt,
          result.overhead != 0 ? std::make_optional(result.overhead) : std::nullopt,
          result.timesBuilt > 0 ? std::make_optional(result.timesBuilt) : std::nullopt,
-         result.timesBuilt > 1 ? std::make_optional(result.isNonDeterministic) : std::nullopt);
+         result.timesBuilt > 1 ? std::make_optional(result.isNonDeterministic) : std::nullopt}).no_rows();
     assert(result.logFile.find('\t') == std::string::npos);
     txn.exec(fmt("notify step_finished, '%d\t%d\t%s'",
             buildId, stepNr, result.logFile));
 
     if (result.stepStatus == bsSuccess) {
         // Update the corresponding `BuildStepOutputs` row to add the output path
-        auto res = txn.exec_params1("select drvPath from BuildSteps where build = $1 and stepnr = $2", buildId, stepNr);
+        auto res = txn.exec("select drvPath from BuildSteps where build = $1 and stepnr = $2", pqxx::params{buildId, stepNr}).one_row();
         assert(res.size());
         StorePath drvPath = localStore->parseStorePath(res[0].as<std::string>());
         // If we've finished building, all the paths should be known
         for (auto & [name, output] : getDestStore()->queryDerivationOutputMap(drvPath, &*localStore))
-            txn.exec_params0
+            txn.exec("update BuildStepOutputs set path = $4 where build = $1 and stepnr = $2 and name = $3",
-                ("update BuildStepOutputs set path = $4 where build = $1 and stepnr = $2 and name = $3",
+                  pqxx::params{buildId, stepNr, name, localStore->printStorePath(output)}).no_rows();
-                  buildId, stepNr, name, localStore->printStorePath(output));
     }
 }
 
@@ -378,23 +372,21 @@ int State::createSubstitutionStep(pqxx::work & txn, time_t startTime, time_t sto
  restart:
     auto stepNr = allocBuildStep(txn, build->id);
 
-    auto r = txn.exec_params
+    auto r = txn.exec("insert into BuildSteps (build, stepnr, type, drvPath, busy, status, startTime, stopTime) values ($1, $2, $3, $4, $5, $6, $7, $8) on conflict do nothing",
-        ("insert into BuildSteps (build, stepnr, type, drvPath, busy, status, startTime, stopTime) values ($1, $2, $3, $4, $5, $6, $7, $8) on conflict do nothing",
+         pqxx::params{build->id,
-         build->id,
          stepNr,
          1, // == substitution
          (localStore->printStorePath(drvPath)),
          0,
          0,
          startTime,
-         stopTime);
+         stopTime});
 
     if (r.affected_rows() == 0) goto restart;
 
-    txn.exec_params0
+    txn.exec("insert into BuildStepOutputs (build, stepnr, name, path) values ($1, $2, $3, $4)",
-        ("insert into BuildStepOutputs (build, stepnr, name, path) values ($1, $2, $3, $4)",
+         pqxx::params{build->id, stepNr, outputName,
-         build->id, stepNr, outputName,
+         localStore->printStorePath(storePath)}).no_rows();
-         localStore->printStorePath(storePath));
 
     return stepNr;
 }
@@ -461,35 +453,32 @@ void State::markSucceededBuild(pqxx::work & txn, Build::ptr build,
 {
     if (build->finishedInDB) return;
 
-    if (txn.exec_params("select 1 from Builds where id = $1 and finished = 0", build->id).empty()) return;
+    if (txn.exec("select 1 from Builds where id = $1 and finished = 0", pqxx::params{build->id}).empty()) return;
 
-    txn.exec_params0
+    txn.exec("update Builds set finished = 1, buildStatus = $2, startTime = $3, stopTime = $4, size = $5, closureSize = $6, releaseName = $7, isCachedBuild = $8, notificationPendingSince = $4 where id = $1",
-        ("update Builds set finished = 1, buildStatus = $2, startTime = $3, stopTime = $4, size = $5, closureSize = $6, releaseName = $7, isCachedBuild = $8, notificationPendingSince = $4 where id = $1",
+         pqxx::params{build->id,
-         build->id,
          (int) (res.failed ? bsFailedWithOutput : bsSuccess),
          startTime,
          stopTime,
          res.size,
          res.closureSize,
          res.releaseName != "" ? std::make_optional(res.releaseName) : std::nullopt,
-         isCachedBuild ? 1 : 0);
+         isCachedBuild ? 1 : 0}).no_rows();
 
     for (auto & [outputName, outputPath] : res.outputs) {
-        txn.exec_params0
+        txn.exec("update BuildOutputs set path = $3 where build = $1 and name = $2",
-            ("update BuildOutputs set path = $3 where build = $1 and name = $2",
+             pqxx::params{build->id,
-             build->id,
              outputName,
-             localStore->printStorePath(outputPath)
+             localStore->printStorePath(outputPath)}
-            );
+            ).no_rows();
     }
 
-    txn.exec_params0("delete from BuildProducts where build = $1", build->id);
+    txn.exec("delete from BuildProducts where build = $1", pqxx::params{build->id}).no_rows();
 
     unsigned int productNr = 1;
     for (auto & product : res.products) {
-        txn.exec_params0
+        txn.exec("insert into BuildProducts (build, productnr, type, subtype, fileSize, sha256hash, path, name, defaultPath) values ($1, $2, $3, $4, $5, $6, $7, $8, $9)",
-            ("insert into BuildProducts (build, productnr, type, subtype, fileSize, sha256hash, path, name, defaultPath) values ($1, $2, $3, $4, $5, $6, $7, $8, $9)",
+             pqxx::params{build->id,
-             build->id,
              productNr++,
              product.type,
              product.subtype,
@@ -497,22 +486,21 @@ void State::markSucceededBuild(pqxx::work & txn, Build::ptr build,
              product.sha256hash ? std::make_optional(product.sha256hash->to_string(HashFormat::Base16, false)) : std::nullopt,
              product.path,
              product.name,
-             product.defaultPath);
+             product.defaultPath}).no_rows();
     }
 
-    txn.exec_params0("delete from BuildMetrics where build = $1", build->id);
+    txn.exec("delete from BuildMetrics where build = $1", pqxx::params{build->id}).no_rows();
 
     for (auto & metric : res.metrics) {
-        txn.exec_params0
+        txn.exec("insert into BuildMetrics (build, name, unit, value, project, jobset, job, timestamp) values ($1, $2, $3, $4, $5, $6, $7, $8)",
-            ("insert into BuildMetrics (build, name, unit, value, project, jobset, job, timestamp) values ($1, $2, $3, $4, $5, $6, $7, $8)",
+             pqxx::params{build->id,
-             build->id,
              metric.second.name,
              metric.second.unit != "" ? std::make_optional(metric.second.unit) : std::nullopt,
              metric.second.value,
              build->projectName,
              build->jobsetName,
              build->jobName,
-             build->timestamp);
+             build->timestamp}).no_rows();
     }
 
     nrBuildsDone++;
@@ -524,7 +512,7 @@ bool State::checkCachedFailure(Step::ptr step, Connection & conn)
     pqxx::work txn(conn);
     for (auto & i : step->drv->outputsAndOptPaths(*localStore))
         if (i.second.second)
-            if (!txn.exec_params("select 1 from FailedPaths where path = $1", localStore->printStorePath(*i.second.second)).empty())
+            if (!txn.exec("select 1 from FailedPaths where path = $1", pqxx::params{localStore->printStorePath(*i.second.second)}).empty())
                 return true;
     return false;
 }
@@ -736,8 +724,8 @@ void State::dumpStatus(Connection & conn)
         auto mc = startDbUpdate();
         pqxx::work txn(conn);
         // FIXME: use PostgreSQL 9.5 upsert.
-        txn.exec("delete from SystemStatus where what = 'queue-runner'");
+        txn.exec("delete from SystemStatus where what = 'queue-runner'").no_rows();
-        txn.exec_params0("insert into SystemStatus values ('queue-runner', $1)", statusJson.dump());
+        txn.exec("insert into SystemStatus values ('queue-runner', $1)", pqxx::params{statusJson.dump()}).no_rows();
         txn.exec("notify status_dumped");
         txn.commit();
     }
@@ -802,7 +790,7 @@ void State::unlock()
 
     {
         pqxx::work txn(*conn);
-        txn.exec("delete from SystemStatus where what = 'queue-runner'");
+        txn.exec("delete from SystemStatus where what = 'queue-runner'").no_rows();
         txn.commit();
     }
 }
@@ -880,11 +868,10 @@ void State::run(BuildID buildOne)
                 pqxx::work txn(*conn);
                 for (auto & step : steps) {
                     printMsg(lvlError, "cleaning orphaned step %d of build %d", step.second, step.first);
-                    txn.exec_params0
+                    txn.exec("update BuildSteps set busy = 0, status = $1 where build = $2 and stepnr = $3 and busy != 0",
-                        ("update BuildSteps set busy = 0, status = $1 where build = $2 and stepnr = $3 and busy != 0",
+                         pqxx::params{(int) bsAborted,
-                         (int) bsAborted,
                          step.first,
-                         step.second);
+                         step.second}).no_rows();
                 }
                 txn.commit();
             } catch (std::exception & e) {

src/hydra-queue-runner/queue-monitor.cc

@@ -108,8 +108,7 @@ bool State::getQueuedBuilds(Connection & conn,
     {
         pqxx::work txn(conn);
 
-        auto res = txn.exec_params
+        auto res = txn.exec("select builds.id, builds.jobset_id, jobsets.project as project, "
-            ("select builds.id, builds.jobset_id, jobsets.project as project, "
              "jobsets.name as jobset, job, drvPath, maxsilent, timeout, timestamp, "
              "globalPriority, priority from Builds "
              "inner join jobsets on builds.jobset_id = jobsets.id "
@@ -158,11 +157,10 @@ bool State::getQueuedBuilds(Connection & conn,
             if (!build->finishedInDB) {
                 auto mc = startDbUpdate();
                 pqxx::work txn(conn);
-                txn.exec_params0
+                txn.exec("update Builds set finished = 1, buildStatus = $2, startTime = $3, stopTime = $3 where id = $1 and finished = 0",
-                    ("update Builds set finished = 1, buildStatus = $2, startTime = $3, stopTime = $3 where id = $1 and finished = 0",
+                     pqxx::params{build->id,
-                     build->id,
                      (int) bsAborted,
-                     time(0));
+                     time(0)}).no_rows();
                 txn.commit();
                 build->finishedInDB = true;
                 nrBuildsDone++;
@@ -192,22 +190,20 @@ bool State::getQueuedBuilds(Connection & conn,
                    derivation path, then by output path. */
                 BuildID propagatedFrom = 0;
 
-                auto res = txn.exec_params1
+                auto res = txn.exec("select max(build) from BuildSteps where drvPath = $1 and startTime != 0 and stopTime != 0 and status = 1",
-                    ("select max(build) from BuildSteps where drvPath = $1 and startTime != 0 and stopTime != 0 and status = 1",
+                     pqxx::params{localStore->printStorePath(ex.step->drvPath)}).one_row();
-                     localStore->printStorePath(ex.step->drvPath));
                 if (!res[0].is_null()) propagatedFrom = res[0].as<BuildID>();
 
                 if (!propagatedFrom) {
                     for (auto & [outputName, optOutputPath] : destStore->queryPartialDerivationOutputMap(ex.step->drvPath, &*localStore)) {
                         constexpr std::string_view common = "select max(s.build) from BuildSteps s join BuildStepOutputs o on s.build = o.build where startTime != 0 and stopTime != 0 and status = 1";
                         auto res = optOutputPath
-                            ? txn.exec_params(
+                            ? txn.exec(
                                 std::string { common } + " and path = $1",
-                                localStore->printStorePath(*optOutputPath))
+                                pqxx::params{localStore->printStorePath(*optOutputPath)})
-                            : txn.exec_params(
+                            : txn.exec(
                                 std::string { common } + " and drvPath = $1 and name = $2",
-                                localStore->printStorePath(ex.step->drvPath),
+                                pqxx::params{localStore->printStorePath(ex.step->drvPath), outputName});
-                                outputName);
                         if (!res[0][0].is_null()) {
                             propagatedFrom = res[0][0].as<BuildID>();
                             break;
@@ -216,12 +212,11 @@ bool State::getQueuedBuilds(Connection & conn,
                 }
 
                 createBuildStep(txn, 0, build->id, ex.step, "", bsCachedFailure, "", propagatedFrom);
-                txn.exec_params
+                txn.exec("update Builds set finished = 1, buildStatus = $2, startTime = $3, stopTime = $3, isCachedBuild = 1, notificationPendingSince = $3 "
-                    ("update Builds set finished = 1, buildStatus = $2, startTime = $3, stopTime = $3, isCachedBuild = 1, notificationPendingSince = $3 "
                      "where id = $1 and finished = 0",
-                     build->id,
+                     pqxx::params{build->id,
                      (int) (ex.step->drvPath == build->drvPath ? bsFailed : bsDepFailed),
-                     time(0));
+                     time(0)}).no_rows();
                 notifyBuildFinished(txn, build->id, {});
                 txn.commit();
                 build->finishedInDB = true;
@@ -653,10 +648,8 @@ Jobset::ptr State::createJobset(pqxx::work & txn,
         if (i != jobsets_->end()) return i->second;
     }
 
-    auto res = txn.exec_params1
+    auto res = txn.exec("select schedulingShares from Jobsets where id = $1",
-        ("select schedulingShares from Jobsets where id = $1",
+         pqxx::params{jobsetID}).one_row();
-         jobsetID);
-    if (res.empty()) throw Error("missing jobset - can't happen");
 
     auto shares = res["schedulingShares"].as<unsigned int>();
 
@@ -664,11 +657,10 @@ Jobset::ptr State::createJobset(pqxx::work & txn,
     jobset->setShares(shares);
 
     /* Load the build steps from the last 24 hours. */
-    auto res2 = txn.exec_params
+    auto res2 = txn.exec("select s.startTime, s.stopTime from BuildSteps s join Builds b on build = id "
-        ("select s.startTime, s.stopTime from BuildSteps s join Builds b on build = id "
          "where s.startTime is not null and s.stopTime > $1 and jobset_id = $2",
-         time(0) - Jobset::schedulingWindow * 10,
+         pqxx::params{time(0) - Jobset::schedulingWindow * 10,
-         jobsetID);
+         jobsetID});
     for (auto const & row : res2) {
         time_t startTime = row["startTime"].as<time_t>();
         time_t stopTime = row["stopTime"].as<time_t>();
@@ -705,11 +697,10 @@ BuildOutput State::getBuildOutputCached(Connection & conn, nix::ref<nix::Store>
     pqxx::work txn(conn);
 
     for (auto & [name, output] : derivationOutputs) {
-        auto r = txn.exec_params
+        auto r = txn.exec("select id, buildStatus, releaseName, closureSize, size from Builds b "
-            ("select id, buildStatus, releaseName, closureSize, size from Builds b "
              "join BuildOutputs o on b.id = o.build "
              "where finished = 1 and (buildStatus = 0 or buildStatus = 6) and path = $1",
-             localStore->printStorePath(output));
+             pqxx::params{localStore->printStorePath(output)});
         if (r.empty()) continue;
         BuildID id = r[0][0].as<BuildID>();
 
@@ -721,9 +712,8 @@ BuildOutput State::getBuildOutputCached(Connection & conn, nix::ref<nix::Store>
         res.closureSize = r[0][3].is_null() ? 0 : r[0][3].as<uint64_t>();
         res.size = r[0][4].is_null() ? 0 : r[0][4].as<uint64_t>();
 
-        auto products = txn.exec_params
+        auto products = txn.exec("select type, subtype, fileSize, sha256hash, path, name, defaultPath from BuildProducts where build = $1 order by productnr",
-            ("select type, subtype, fileSize, sha256hash, path, name, defaultPath from BuildProducts where build = $1 order by productnr",
+             pqxx::params{id});
-             id);
 
         for (auto row : products) {
             BuildProduct product;
@@ -745,9 +735,8 @@ BuildOutput State::getBuildOutputCached(Connection & conn, nix::ref<nix::Store>
             res.products.emplace_back(product);
         }
 
-        auto metrics = txn.exec_params
+        auto metrics = txn.exec("select name, unit, value from BuildMetrics where build = $1",
-            ("select name, unit, value from BuildMetrics where build = $1",
+             pqxx::params{id});
-             id);
 
         for (auto row : metrics) {
             BuildMetric metric;