forked from lix-project/lix
131 lines
4.1 KiB
C++
131 lines
4.1 KiB
C++
#include "command.hh"
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#include "common-args.hh"
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#include "shared.hh"
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#include "store-api.hh"
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#include "local-fs-store.hh"
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#include "fs-accessor.hh"
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using namespace nix;
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struct CmdBundle : InstallableCommand
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{
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std::string bundler = "github:matthewbauer/nix-bundle";
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std::optional<Path> outLink;
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CmdBundle()
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{
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addFlag({
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.longName = "bundler",
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.description = "use custom bundler",
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.labels = {"flake-url"},
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.handler = {&bundler},
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.completer = {[&](size_t, std::string_view prefix) {
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completeFlakeRef(getStore(), prefix);
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}}
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});
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addFlag({
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.longName = "out-link",
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.shortName = 'o',
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.description = "path of the symlink to the build result",
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.labels = {"path"},
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.handler = {&outLink},
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.completer = completePath
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});
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}
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std::string description() override
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{
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return "bundle an application so that it works outside of the Nix store";
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}
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Examples examples() override
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{
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return {
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Example{
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"To bundle Hello:",
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"nix bundle hello"
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},
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};
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}
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Category category() override { return catSecondary; }
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Strings getDefaultFlakeAttrPaths() override
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{
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Strings res{"defaultApp." + settings.thisSystem.get()};
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for (auto & s : SourceExprCommand::getDefaultFlakeAttrPaths())
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res.push_back(s);
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return res;
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}
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Strings getDefaultFlakeAttrPathPrefixes() override
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{
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Strings res{"apps." + settings.thisSystem.get() + ".", "packages"};
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for (auto & s : SourceExprCommand::getDefaultFlakeAttrPathPrefixes())
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res.push_back(s);
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return res;
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}
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void run(ref<Store> store) override
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{
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auto evalState = getEvalState();
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auto app = installable->toApp(*evalState);
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store->buildPaths(app.context);
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auto [bundlerFlakeRef, bundlerName] = parseFlakeRefWithFragment(bundler, absPath("."));
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const flake::LockFlags lockFlags{ .writeLockFile = false };
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auto bundler = InstallableFlake(
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evalState, std::move(bundlerFlakeRef),
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Strings{bundlerName == "" ? "defaultBundler" : bundlerName},
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Strings({"bundlers."}), lockFlags);
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Value * arg = evalState->allocValue();
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evalState->mkAttrs(*arg, 2);
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PathSet context;
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for (auto & i : app.context)
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context.insert("=" + store->printStorePath(i.path));
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mkString(*evalState->allocAttr(*arg, evalState->symbols.create("program")), app.program, context);
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mkString(*evalState->allocAttr(*arg, evalState->symbols.create("system")), settings.thisSystem.get());
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arg->attrs->sort();
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auto vRes = evalState->allocValue();
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evalState->callFunction(*bundler.toValue(*evalState).first, *arg, *vRes, noPos);
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if (!evalState->isDerivation(*vRes))
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throw Error("the bundler '%s' does not produce a derivation", bundler.what());
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auto attr1 = vRes->attrs->get(evalState->sDrvPath);
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if (!attr1)
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throw Error("the bundler '%s' does not produce a derivation", bundler.what());
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PathSet context2;
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StorePath drvPath = store->parseStorePath(evalState->coerceToPath(*attr1->pos, *attr1->value, context2));
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auto attr2 = vRes->attrs->get(evalState->sOutPath);
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if (!attr2)
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throw Error("the bundler '%s' does not produce a derivation", bundler.what());
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StorePath outPath = store->parseStorePath(evalState->coerceToPath(*attr2->pos, *attr2->value, context2));
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store->buildPaths({{drvPath}});
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auto outPathS = store->printStorePath(outPath);
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auto info = store->queryPathInfo(outPath);
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if (!info->references.empty())
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throw Error("'%s' has references; a bundler must not leave any references", outPathS);
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if (!outLink)
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outLink = baseNameOf(app.program);
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store.dynamic_pointer_cast<LocalFSStore>()->addPermRoot(outPath, absPath(*outLink));
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}
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};
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static auto r2 = registerCommand<CmdBundle>("bundle");
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