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-rw-r--r--src/libstore/derived-path.cc31
-rw-r--r--src/libstore/derived-path.hh2
-rw-r--r--src/nix/build.cc17
-rw-r--r--tests/build-dry.sh19
-rw-r--r--tests/ca/build-dry.sh6
5 files changed, 67 insertions, 8 deletions
diff --git a/src/libstore/derived-path.cc b/src/libstore/derived-path.cc
index 194489580..0183bda35 100644
--- a/src/libstore/derived-path.cc
+++ b/src/libstore/derived-path.cc
@@ -11,6 +11,21 @@ nlohmann::json DerivedPath::Opaque::toJSON(ref<Store> store) const {
return res;
}
+nlohmann::json DerivedPath::Built::toJSON(ref<Store> store) const {
+ nlohmann::json res;
+ res["drvPath"] = store->printStorePath(drvPath);
+ // Fallback for the input-addressed derivation case: We expect to always be
+ // able to print the output paths, so let’s do it
+ auto knownOutputs = store->queryPartialDerivationOutputMap(drvPath);
+ for (const auto& output : outputs) {
+ if (knownOutputs.at(output))
+ res["outputs"][output] = store->printStorePath(knownOutputs.at(output).value());
+ else
+ res["outputs"][output] = nullptr;
+ }
+ return res;
+}
+
nlohmann::json BuiltPath::Built::toJSON(ref<Store> store) const {
nlohmann::json res;
res["drvPath"] = store->printStorePath(drvPath);
@@ -35,16 +50,22 @@ StorePathSet BuiltPath::outPaths() const
);
}
-nlohmann::json derivedPathsWithHintsToJSON(const BuiltPaths & buildables, ref<Store> store) {
+template<typename T>
+nlohmann::json stuffToJSON(const std::vector<T> & ts, ref<Store> store) {
auto res = nlohmann::json::array();
- for (const BuiltPath & buildable : buildables) {
- std::visit([&res, store](const auto & buildable) {
- res.push_back(buildable.toJSON(store));
- }, buildable.raw());
+ for (const T & t : ts) {
+ std::visit([&res, store](const auto & t) {
+ res.push_back(t.toJSON(store));
+ }, t.raw());
}
return res;
}
+nlohmann::json derivedPathsWithHintsToJSON(const BuiltPaths & buildables, ref<Store> store)
+{ return stuffToJSON<BuiltPath>(buildables, store); }
+nlohmann::json derivedPathsToJSON(const DerivedPaths & paths, ref<Store> store)
+{ return stuffToJSON<DerivedPath>(paths, store); }
+
std::string DerivedPath::Opaque::to_string(const Store & store) const {
return store.printStorePath(path);
diff --git a/src/libstore/derived-path.hh b/src/libstore/derived-path.hh
index 9d6ace069..8ca0882a4 100644
--- a/src/libstore/derived-path.hh
+++ b/src/libstore/derived-path.hh
@@ -45,6 +45,7 @@ struct DerivedPathBuilt {
std::string to_string(const Store & store) const;
static DerivedPathBuilt parse(const Store & store, std::string_view);
+ nlohmann::json toJSON(ref<Store> store) const;
};
using _DerivedPathRaw = std::variant<
@@ -119,5 +120,6 @@ typedef std::vector<DerivedPath> DerivedPaths;
typedef std::vector<BuiltPath> BuiltPaths;
nlohmann::json derivedPathsWithHintsToJSON(const BuiltPaths & buildables, ref<Store> store);
+nlohmann::json derivedPathsToJSON(const DerivedPaths & , ref<Store> store);
}
diff --git a/src/nix/build.cc b/src/nix/build.cc
index 680db1c60..840c7ca38 100644
--- a/src/nix/build.cc
+++ b/src/nix/build.cc
@@ -52,15 +52,26 @@ struct CmdBuild : InstallablesCommand, MixDryRun, MixJSON, MixProfile
void run(ref<Store> store) override
{
+ if (dryRun) {
+ std::vector<DerivedPath> pathsToBuild;
+
+ for (auto & i : installables) {
+ auto b = i->toDerivedPaths();
+ pathsToBuild.insert(pathsToBuild.end(), b.begin(), b.end());
+ }
+ printMissing(store, pathsToBuild, lvlError);
+ if (json)
+ logger->cout("%s", derivedPathsToJSON(pathsToBuild, store).dump());
+ return;
+ }
+
auto buildables = Installable::build(
getEvalStore(), store,
- dryRun ? Realise::Derivation : Realise::Outputs,
+ Realise::Outputs,
installables, buildMode);
if (json) logger->cout("%s", derivedPathsWithHintsToJSON(buildables, store).dump());
- if (dryRun) return;
-
if (outLink != "")
if (auto store2 = store.dynamic_pointer_cast<LocalFSStore>())
for (const auto & [_i, buildable] : enumerate(buildables)) {
diff --git a/tests/build-dry.sh b/tests/build-dry.sh
index e72533e70..f0f38e9a0 100644
--- a/tests/build-dry.sh
+++ b/tests/build-dry.sh
@@ -50,3 +50,22 @@ nix build -f dependencies.nix -o $RESULT --dry-run
nix build -f dependencies.nix -o $RESULT
[[ -h $RESULT ]]
+
+###################################################
+# Check the JSON output
+clearStore
+clearCache
+
+RES=$(nix build -f dependencies.nix --dry-run --json)
+
+if [[ -z "$NIX_TESTS_CA_BY_DEFAULT" ]]; then
+ echo "$RES" | jq '.[0] | [
+ (.drvPath | test("'$NIX_STORE_DIR'.*\\.drv")),
+ (.outputs.out | test("'$NIX_STORE_DIR'"))
+ ] | all'
+else
+ echo "$RES" | jq '.[0] | [
+ (.drvPath | test("'$NIX_STORE_DIR'.*\\.drv")),
+ .outputs.out == null
+ ] | all'
+fi
diff --git a/tests/ca/build-dry.sh b/tests/ca/build-dry.sh
new file mode 100644
index 000000000..9a72075ec
--- /dev/null
+++ b/tests/ca/build-dry.sh
@@ -0,0 +1,6 @@
+source common.sh
+
+export NIX_TESTS_CA_BY_DEFAULT=1
+
+cd .. && source build-dry.sh
+