nix build: Create result symlinks
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1277aab219
commit
df4342bc17
4 changed files with 104 additions and 41 deletions
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@ -23,9 +23,20 @@ struct CmdBuild : MixDryRun, InstallablesCommand
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void run(ref<Store> store) override
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void run(ref<Store> store) override
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{
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{
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auto paths = toStorePaths(store, dryRun ? DryRun : Build);
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auto buildables = toBuildables(store, dryRun ? DryRun : Build);
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printError("build result: %s", showPaths(paths));
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for (size_t i = 0; i < buildables.size(); ++i) {
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auto & b(buildables[i]);
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for (auto & output : b.outputs) {
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if (auto store2 = store.dynamic_pointer_cast<LocalFSStore>()) {
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std::string symlink = "result";
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if (i) symlink += fmt("-%d", i);
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if (output.first != "out") symlink += fmt("-%s", output.first);
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store2->addPermRoot(output.second, absPath(symlink), true);
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}
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}
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}
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}
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}
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};
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};
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@ -44,18 +44,25 @@ private:
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std::shared_ptr<Store> _store;
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std::shared_ptr<Store> _store;
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};
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};
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struct Whence { std::string outputName; Path drvPath; };
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struct Buildable
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typedef std::map<Path, Whence> Buildables;
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{
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Path drvPath; // may be empty
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std::map<std::string, Path> outputs;
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};
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typedef std::vector<Buildable> Buildables;
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struct Installable
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struct Installable
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{
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{
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virtual std::string what() = 0;
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virtual std::string what() = 0;
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virtual Buildables toBuildable(bool singular = false)
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virtual Buildables toBuildables()
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{
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{
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throw Error("argument '%s' cannot be built", what());
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throw Error("argument '%s' cannot be built", what());
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}
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}
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Buildable toBuildable();
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virtual Value * toValue(EvalState & state)
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virtual Value * toValue(EvalState & state)
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{
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{
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throw Error("argument '%s' cannot be evaluated", what());
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throw Error("argument '%s' cannot be evaluated", what());
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@ -97,9 +104,11 @@ struct InstallablesCommand : virtual Args, SourceExprCommand
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expectArgs("installables", &_installables);
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expectArgs("installables", &_installables);
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}
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}
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enum ToStorePathsMode { Build, NoBuild, DryRun };
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enum RealiseMode { Build, NoBuild, DryRun };
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PathSet toStorePaths(ref<Store> store, ToStorePathsMode mode);
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Buildables toBuildables(ref<Store> store, RealiseMode mode);
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PathSet toStorePaths(ref<Store> store, RealiseMode mode);
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void prepare() override;
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void prepare() override;
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@ -70,17 +70,27 @@ ref<EvalState> SourceExprCommand::getEvalState()
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return ref<EvalState>(evalState);
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return ref<EvalState>(evalState);
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}
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}
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Buildable Installable::toBuildable()
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{
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auto buildables = toBuildables();
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if (buildables.size() != 1)
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throw Error("installable '%s' evaluates to %d derivations, where only one is expected", what(), buildables.size());
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return std::move(buildables[0]);
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}
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struct InstallableStoreDrv : Installable
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struct InstallableStoreDrv : Installable
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{
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{
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Path storePath;
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Path drvPath;
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InstallableStoreDrv(const Path & storePath) : storePath(storePath) { }
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InstallableStoreDrv(const Path & drvPath) : drvPath(drvPath) { }
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std::string what() override { return storePath; }
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std::string what() override { return drvPath; }
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Buildables toBuildable(bool singular) override
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Buildables toBuildables() override
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{
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{
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return {{storePath, {}}};
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Buildable b = {drvPath};
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// FIXME: add outputs?
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return {b};
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}
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}
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};
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};
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@ -92,9 +102,9 @@ struct InstallableStorePath : Installable
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std::string what() override { return storePath; }
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std::string what() override { return storePath; }
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Buildables toBuildable(bool singular) override
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Buildables toBuildables() override
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{
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{
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return {{storePath, {}}};
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return {{"", {{"out", storePath}}}};
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}
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}
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};
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};
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@ -104,7 +114,7 @@ struct InstallableValue : Installable
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InstallableValue(SourceExprCommand & cmd) : cmd(cmd) { }
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InstallableValue(SourceExprCommand & cmd) : cmd(cmd) { }
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Buildables toBuildable(bool singular) override
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Buildables toBuildables() override
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{
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{
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auto state = cmd.getEvalState();
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auto state = cmd.getEvalState();
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@ -117,16 +127,32 @@ struct InstallableValue : Installable
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DrvInfos drvs;
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DrvInfos drvs;
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getDerivations(*state, *v, "", autoArgs, drvs, false);
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getDerivations(*state, *v, "", autoArgs, drvs, false);
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if (singular && drvs.size() != 1)
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throw Error("installable '%s' evaluates to %d derivations, where only one is expected", what(), drvs.size());
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Buildables res;
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Buildables res;
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for (auto & drv : drvs)
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PathSet drvPaths;
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for (auto & output : drv.queryOutputs())
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res.emplace(output.second, Whence{output.first, drv.queryDrvPath()});
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return res;
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for (auto & drv : drvs) {
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Buildable b{drv.queryDrvPath()};
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drvPaths.insert(b.drvPath);
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auto outputName = drv.queryOutputName();
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if (outputName == "")
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throw Error("derivation '%s' lacks an 'outputName' attribute", b.drvPath);
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b.outputs.emplace(outputName, drv.queryOutPath());
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res.push_back(std::move(b));
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}
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// Hack to recognize .all: if all drvs have the same drvPath,
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// merge the buildables.
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if (drvPaths.size() == 1) {
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Buildable b{*drvPaths.begin()};
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for (auto & b2 : res)
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b.outputs.insert(b2.outputs.begin(), b2.outputs.end());
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return {b};
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} else
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return res;
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}
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}
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};
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};
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@ -214,23 +240,38 @@ static std::vector<std::shared_ptr<Installable>> parseInstallables(
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return result;
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return result;
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}
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}
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PathSet InstallablesCommand::toStorePaths(ref<Store> store, ToStorePathsMode mode)
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Buildables InstallablesCommand::toBuildables(ref<Store> store, RealiseMode mode)
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{
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{
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if (mode != Build)
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if (mode != Build)
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settings.readOnlyMode = true;
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settings.readOnlyMode = true;
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PathSet outPaths, buildables;
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Buildables buildables;
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for (auto & i : installables)
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PathSet pathsToBuild;
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for (auto & b : i->toBuildable()) {
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outPaths.insert(b.first);
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for (auto & i : installables) {
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buildables.insert(b.second.drvPath != "" ? b.second.drvPath : b.first);
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for (auto & b : i->toBuildables()) {
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if (b.drvPath != "")
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pathsToBuild.insert(b.drvPath);
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buildables.push_back(std::move(b));
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}
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}
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}
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if (mode == DryRun)
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if (mode == DryRun)
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printMissing(store, buildables, lvlError);
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printMissing(store, pathsToBuild, lvlError);
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else if (mode == Build)
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else if (mode == Build)
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store->buildPaths(buildables);
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store->buildPaths(pathsToBuild);
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return buildables;
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}
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PathSet InstallablesCommand::toStorePaths(ref<Store> store, RealiseMode mode)
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{
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PathSet outPaths;
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for (auto & b : toBuildables(store, mode))
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for (auto & output : b.outputs)
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outPaths.insert(output.second);
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return outPaths;
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return outPaths;
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}
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}
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@ -24,23 +24,25 @@ struct CmdLog : InstallableCommand
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void run(ref<Store> store) override
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void run(ref<Store> store) override
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{
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{
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settings.readOnlyMode = true;
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auto subs = getDefaultSubstituters();
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auto subs = getDefaultSubstituters();
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subs.push_front(store);
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subs.push_front(store);
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for (auto & b : installable->toBuildable(true)) {
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auto b = installable->toBuildable();
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for (auto & sub : subs) {
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for (auto & sub : subs) {
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auto log = b.second.drvPath != "" ? sub->getBuildLog(b.second.drvPath) : nullptr;
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auto log = b.drvPath != "" ? sub->getBuildLog(b.drvPath) : nullptr;
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if (!log) {
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for (auto & output : b.outputs) {
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log = sub->getBuildLog(b.first);
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if (log) break;
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if (!log) continue;
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log = sub->getBuildLog(output.second);
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}
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stopProgressBar();
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printInfo("got build log for '%s' from '%s'", b.first, sub->getUri());
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std::cout << *log;
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return;
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}
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}
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if (!log) continue;
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stopProgressBar();
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printInfo("got build log for '%s' from '%s'", installable->what(), sub->getUri());
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std::cout << *log;
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return;
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}
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}
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throw Error("build log of '%s' is not available", installable->what());
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throw Error("build log of '%s' is not available", installable->what());
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