forked from lix-project/lix
125 lines
3.9 KiB
C++
125 lines
3.9 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:NixOS/bundlers";
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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 = fmt("Use a custom bundler instead of the default (`%s`).", 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 = "Override the name of the symlink to the build result. It defaults to the base name of the app.",
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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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std::string doc() override
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{
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return
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#include "bundle.md"
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;
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}
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Category category() override { return catSecondary; }
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// FIXME: cut&paste from CmdRun.
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Strings getDefaultFlakeAttrPaths() override
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{
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Strings res{
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"apps." + settings.thisSystem.get() + ".default",
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"defaultApp." + settings.thisSystem.get()
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};
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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() + "."};
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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 val = installable->toValue(*evalState).first;
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auto [bundlerFlakeRef, bundlerName, outputsSpec] = parseFlakeRefWithFragmentAndOutputsSpec(bundler, absPath("."));
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const flake::LockFlags lockFlags{ .writeLockFile = false };
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InstallableFlake bundler{this,
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evalState, std::move(bundlerFlakeRef), bundlerName, outputsSpec,
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{"bundlers." + settings.thisSystem.get() + ".default",
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"defaultBundler." + settings.thisSystem.get()
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},
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{"bundlers." + settings.thisSystem.get() + "."},
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lockFlags
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};
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auto vRes = evalState->allocValue();
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evalState->callFunction(*bundler.toValue(*evalState).first, *val, *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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auto drvPath = evalState->coerceToStorePath(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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auto outPath = evalState->coerceToStorePath(attr2->pos, *attr2->value, context2);
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store->buildPaths({ DerivedPath::Built { drvPath } });
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auto outPathS = store->printStorePath(outPath);
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if (!outLink) {
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auto * attr = vRes->attrs->get(evalState->sName);
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if (!attr)
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throw Error("attribute 'name' missing");
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outLink = evalState->forceStringNoCtx(*attr->value, attr->pos);
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}
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// TODO: will crash if not a localFSStore?
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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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