support nix 2.18

flake.lock

@@ -42,16 +42,16 @@
         "nixpkgs-regression": "nixpkgs-regression"
       },
       "locked": {
-        "lastModified": 1690219894,
-        "narHash": "sha256-QMYAkdtU+g9HlZKtoJ+AI6TbWzzovKGnPZJHfZdclc8=",
+        "lastModified": 1696259154,
+        "narHash": "sha256-WNmifcTsN9aG1ONkv+l2BC4sHZZxtNKy0keqBHXXQ7w=",
         "owner": "NixOS",
         "repo": "nix",
-        "rev": "a212300a1d9f9c7b0daf19c00c87fc50480f54f4",
+        "rev": "f5f4de6a550327b4b1a06123c2e450f1b92c73b6",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "2.17.0",
+        "ref": "2.18.1",
         "repo": "nix",
         "type": "github"
       }

flake.nix

@@ -2,7 +2,7 @@
   description = "A Nix-based continuous build system";
 
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-23.05";
-  inputs.nix.url = "github:NixOS/nix/2.17.0";
+  inputs.nix.url = "github:NixOS/nix/2.18.1";
   inputs.nix.inputs.nixpkgs.follows = "nixpkgs";
 
   outputs = { self, nixpkgs, nix }:

src/hydra-eval-jobs/hydra-eval-jobs.cc

@@ -7,6 +7,7 @@
 #include "store-api.hh"
 #include "eval.hh"
 #include "eval-inline.hh"
+#include "eval-settings.hh"
 #include "util.hh"
 #include "get-drvs.hh"
 #include "globals.hh"
@@ -208,13 +209,13 @@ static void worker(
                     for (auto & c : context)
                         std::visit(overloaded {
                             [&](const NixStringContextElem::Built & b) {
-                                job["constituents"].push_back(state.store->printStorePath(b.drvPath));
+                                job["constituents"].push_back(b.drvPath->to_string(*state.store));
                             },
                             [&](const NixStringContextElem::Opaque & o) {
                             },
                             [&](const NixStringContextElem::DrvDeep & d) {
                             },
-                        }, c.raw());
+                        }, c.raw);
 
                     state.forceList(*a->value, a->pos, "while evaluating the `constituents` attribute");
                     for (unsigned int n = 0; n < a->value->listSize(); ++n) {
@@ -516,7 +517,7 @@ int main(int argc, char * * argv)
                     auto drvPath2 = store->parseStorePath((std::string) (*job2)["drvPath"]);
                     auto drv2 = store->readDerivation(drvPath2);
                     job["constituents"].push_back(store->printStorePath(drvPath2));
-                    drv.inputDrvs[drvPath2] = {drv2.outputs.begin()->first};
+                    drv.inputDrvs.map[drvPath2].value = {drv2.outputs.begin()->first};
                 }
 
                 if (brokenJobs.empty()) {

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

@@ -276,9 +276,9 @@ void State::buildRemote(ref<Store> destStore,
         for (auto & p : step->drv->inputSrcs)
             inputs.insert(p);
 
-        for (auto & input : step->drv->inputDrvs) {
-            auto drv2 = localStore->readDerivation(input.first);
-            for (auto & name : input.second) {
+        for (auto & [drvPath, node] : step->drv->inputDrvs.map) {
+            auto drv2 = localStore->readDerivation(drvPath);
+            for (auto & name : node.value) {
                 if (auto i = get(drv2.outputs, name)) {
                     auto outPath = i->path(*localStore, drv2.name, name);
                     inputs.insert(*outPath);

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

@@ -561,7 +561,7 @@ Step::ptr State::createStep(ref<Store> destStore,
     printMsg(lvlDebug, "creating build step ‘%1%’", localStore->printStorePath(drvPath));
 
     /* Create steps for the dependencies. */
-    for (auto & i : step->drv->inputDrvs) {
+    for (auto & i : step->drv->inputDrvs.map) {
         auto dep = createStep(destStore, conn, build, i.first, 0, step, finishedDrvs, newSteps, newRunnable);
         if (dep) {
             auto step_(step->state.lock());