mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-27 08:16:14 +02:00
Added nonFlakeRequires and the command nix flake deps
This commit is contained in:
Nick Van den Broeck
parent
87033f2c4e
commit
18c019b616
4 changed files with 200 additions and 93 deletions
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@ -18,7 +18,9 @@ std::shared_ptr<FlakeRegistry> readRegistry(const Path & path)
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{
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auto registry = std::make_shared<FlakeRegistry>();
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try {
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if (!pathExists(path))
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return std::make_shared<FlakeRegistry>();
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auto json = nlohmann::json::parse(readFile(path));
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auto version = json.value("version", 0);
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@ -30,9 +32,6 @@ std::shared_ptr<FlakeRegistry> readRegistry(const Path & path)
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FlakeRegistry::Entry entry{FlakeRef(i->value("uri", ""))};
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registry->entries.emplace(i.key(), entry);
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}
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} catch (SysError & e) {
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if (e.errNo != ENOENT) throw;
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}
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return registry;
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}
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@ -54,7 +53,6 @@ Path getUserRegistryPath()
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{
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return getHome() + "/.config/nix/registry.json";
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}
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std::shared_ptr<FlakeRegistry> getGlobalRegistry()
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{
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// FIXME: get from nixos.org.
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@ -76,12 +74,20 @@ std::shared_ptr<FlakeRegistry> getFlagRegistry()
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const std::vector<std::shared_ptr<FlakeRegistry>> EvalState::getFlakeRegistries()
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{
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std::vector<std::shared_ptr<FlakeRegistry>> registries;
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if (evalSettings.pureEval) {
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registries.push_back(std::make_shared<FlakeRegistry>()); // global
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registries.push_back(std::make_shared<FlakeRegistry>()); // user
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registries.push_back(std::make_shared<FlakeRegistry>()); // local
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} else {
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registries.push_back(getGlobalRegistry());
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registries.push_back(getUserRegistry());
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registries.push_back(getLocalRegistry());
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}
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registries.push_back(getFlagRegistry());
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return registries;
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}
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// Creates a Nix attribute set value listing all dependencies, so they can be used in `provides`.
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Value * makeFlakeRegistryValue(EvalState & state)
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{
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auto v = state.allocValue();
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@ -199,7 +205,7 @@ static FlakeSourceInfo fetchFlake(EvalState & state, const FlakeRef & flakeRef)
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Flake getFlake(EvalState & state, const FlakeRef & flakeRef)
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{
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auto sourceInfo = fetchFlake(state, flakeRef);
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FlakeSourceInfo sourceInfo = fetchFlake(state, flakeRef);
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debug("got flake source '%s' with revision %s",
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sourceInfo.storePath, sourceInfo.rev.value_or(Hash(htSHA1)).to_string(Base16, false));
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@ -209,18 +215,16 @@ Flake getFlake(EvalState & state, const FlakeRef & flakeRef)
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if (state.allowedPaths)
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state.allowedPaths->insert(flakePath);
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FlakeRef newFlakeRef(flakeRef);
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if (std::get_if<FlakeRef::IsGitHub>(&newFlakeRef.data)) {
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FlakeSourceInfo srcInfo = fetchFlake(state, newFlakeRef);
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if (srcInfo.rev) {
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std::string uri = flakeRef.baseRef().to_string();
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newFlakeRef = FlakeRef(uri + "/" + srcInfo.rev->to_string(Base16, false));
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}
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Flake flake(flakeRef);
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if (std::get_if<FlakeRef::IsGitHub>(&flakeRef.data)) {
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if (sourceInfo.rev)
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flake.ref = FlakeRef(flakeRef.baseRef().to_string()
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+ "/" + sourceInfo.rev->to_string(Base16, false));
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}
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Flake flake(newFlakeRef);
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flake.path = flakePath;
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flake.revCount = sourceInfo.revCount;
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flake.path = flakePath;
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Value vInfo;
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state.evalFile(flakePath + "/flake.nix", vInfo); // FIXME: symlink attack
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@ -242,6 +246,15 @@ Flake getFlake(EvalState & state, const FlakeRef & flakeRef)
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*(**requires).value->listElems()[n], *(**requires).pos)));
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}
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if (std::optional<Attr *> nonFlakeRequires = vInfo.attrs->get(state.symbols.create("nonFlakeRequires"))) {
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state.forceAttrs(*(**nonFlakeRequires).value, *(**nonFlakeRequires).pos);
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for (Attr attr : *(*(**nonFlakeRequires).value).attrs) {
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std::string myNonFlakeUri = state.forceStringNoCtx(*attr.value, *attr.pos);
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FlakeRef nonFlakeRef = FlakeRef(myNonFlakeUri);
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flake.nonFlakeRequires.insert_or_assign(attr.name, nonFlakeRef);
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}
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}
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if (auto provides = vInfo.attrs->get(state.symbols.create("provides"))) {
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state.forceFunction(*(**provides).value, *(**provides).pos);
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flake.vProvides = (**provides).value;
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@ -250,86 +263,107 @@ Flake getFlake(EvalState & state, const FlakeRef & flakeRef)
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auto lockFile = flakePath + "/flake.lock"; // FIXME: symlink attack
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if (pathExists(lockFile)) {
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flake.lockFile = readRegistry(lockFile);
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for (auto & entry : flake.lockFile->entries)
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if (!entry.second.ref.isImmutable())
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throw Error("flake lock file '%s' contains mutable entry '%s'",
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lockFile, entry.second.ref.to_string());
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}
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return flake;
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}
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// Get the `NonFlake` corresponding to a `FlakeRef`.
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NonFlake getNonFlake(EvalState & state, const FlakeRef & flakeRef, FlakeId flakeId)
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{
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FlakeSourceInfo sourceInfo = fetchFlake(state, flakeRef);
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debug("got non-flake source '%s' with revision %s",
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sourceInfo.storePath, sourceInfo.rev.value_or(Hash(htSHA1)).to_string(Base16, false));
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auto flakePath = sourceInfo.storePath;
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state.store->assertStorePath(flakePath);
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if (state.allowedPaths)
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state.allowedPaths->insert(flakePath);
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NonFlake nonFlake(flakeRef);
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if (std::get_if<FlakeRef::IsGitHub>(&flakeRef.data)) {
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if (sourceInfo.rev)
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nonFlake.ref = FlakeRef(flakeRef.baseRef().to_string()
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+ "/" + sourceInfo.rev->to_string(Base16, false));
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}
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nonFlake.path = flakePath;
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nonFlake.id = flakeId;
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return nonFlake;
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}
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/* Given a flake reference, recursively fetch it and its
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dependencies.
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FIXME: this should return a graph of flakes.
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*/
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static std::tuple<FlakeId, std::map<FlakeId, Flake>> resolveFlake(EvalState & state,
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const FlakeRef & topRef, bool impureTopRef)
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Dependencies resolveFlake(EvalState & state, const FlakeRef & topRef, bool impureTopRef)
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{
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std::map<FlakeId, Flake> done;
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std::queue<std::tuple<FlakeRef, bool>> todo;
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std::optional<FlakeId> topFlakeId; /// FIXME: ambiguous
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todo.push({topRef, true});
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Dependencies deps;
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std::queue<FlakeRef> todo;
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bool isTopLevel = true;
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todo.push(topRef);
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auto registries = state.getFlakeRegistries();
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//std::shared_ptr<FlakeRegistry> localRegistry = registries.at(2);
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while (!todo.empty()) {
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auto [flakeRef, toplevel] = todo.front();
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auto flakeRef = todo.front();
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todo.pop();
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if (auto refData = std::get_if<FlakeRef::IsFlakeId>(&flakeRef.data)) {
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if (done.count(refData->id)) continue; // optimization
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flakeRef = lookupFlake(state, flakeRef,
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!evalSettings.pureEval || (toplevel && impureTopRef) ? registries : std::vector<std::shared_ptr<FlakeRegistry>>());
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// This is why we need the `registries`.
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}
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#if 0
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if (evalSettings.pureEval && !flakeRef.isImmutable() && (!toplevel || !impureTopRef))
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flakeRef = lookupFlake(state, flakeRef, registries);
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if (evalSettings.pureEval && !flakeRef.isImmutable() && (!isTopLevel || !impureTopRef))
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throw Error("mutable flake '%s' is not allowed in pure mode; use --impure to disable", flakeRef.to_string());
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#endif
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auto flake = getFlake(state, flakeRef);
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if (done.count(flake.id)) continue;
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if (toplevel) topFlakeId = flake.id;
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for (auto & require : flake.requires)
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todo.push({require, false});
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#if 0
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// The following piece of code basically adds the FlakeRefs from
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// the lockfiles of dependencies to the localRegistry. This is used
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// to resolve future `FlakeId`s, in `lookupFlake` a bit above this.
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if (flake.lockFile)
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for (auto & entry : flake.lockFile->entries) {
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if (localRegistry->entries.count(entry.first)) continue;
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localRegistry->entries.emplace(entry.first, entry.second);
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}
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#endif
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done.emplace(flake.id, std::move(flake));
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if (isTopLevel) {
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deps.topFlakeId = flake.id;
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isTopLevel = false;
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}
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assert(topFlakeId);
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return {*topFlakeId, std::move(done)};
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for (auto & flakeRef : flake.requires)
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todo.push(flakeRef);
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for (auto & x : flake.nonFlakeRequires)
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deps.nonFlakes.push_back(getNonFlake(state, x.second, x.first));
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// TODO (Nick): If there are 2 non-flake dependencies with the same
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// FlakeId, this will lead to trouble! One of the dependencies won't
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// be used!
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deps.flakes.push_back(flake);
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}
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return deps;
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}
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FlakeRegistry updateLockFile(EvalState & evalState, FlakeRef & flakeRef)
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{
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FlakeRegistry newLockFile;
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std::map<FlakeId, Flake> myDependencyMap = get<1>(resolveFlake(evalState, flakeRef, false));
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Dependencies deps = resolveFlake(evalState, flakeRef, false);
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// Nick assumed that "topRefPure" means that the Flake for flakeRef can be
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// fetched purely.
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for (auto const& require : myDependencyMap) {
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FlakeRegistry::Entry entry = FlakeRegistry::Entry(require.second.ref);
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// The FlakeRefs are immutable because they come out of the Flake objects,
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// not from the requires.
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newLockFile.entries.insert(std::pair<FlakeId, FlakeRegistry::Entry>(require.first, entry));
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for (auto const& require : deps.flakes) {
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FlakeRegistry::Entry entry = FlakeRegistry::Entry(require.ref);
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// The FlakeRefs are immutable because they come out of the Flake objects.
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if (require.id != deps.topFlakeId)
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newLockFile.entries.insert_or_assign(require.id, entry);
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// TODO (Nick): If there are 2 flake dependencies with the same FlakeId,
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// one of them gets ignored!
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}
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for (auto const& nonFlake : deps.nonFlakes) {
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FlakeRegistry::Entry entry = FlakeRegistry::Entry(nonFlake.ref);
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newLockFile.entries.insert_or_assign(nonFlake.id, entry);
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// We are assuming the sets of FlakeIds for flakes and non-flakes
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// are disjoint.
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}
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return newLockFile;
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}
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@ -348,21 +382,26 @@ void updateLockFile(EvalState & state, std::string path)
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}
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}
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Value * makeFlakeValue(EvalState & state, const FlakeRef & flakeRef, bool impureTopRef, Value & v)
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// Return the `provides` of the top flake, while assigning to `v` the provides
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// of the dependencies as well.
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Value * makeFlakeValue(EvalState & state, FlakeUri flakeUri, bool impureTopRef, Value & v)
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{
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auto [topFlakeId, flakes] = resolveFlake(state, flakeRef, impureTopRef);
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FlakeRef flakeRef = FlakeRef(flakeUri);
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Dependencies deps = resolveFlake(state, flakeRef, impure);
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// FIXME: we should call each flake with only its dependencies
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// (rather than the closure of the top-level flake).
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auto vResult = state.allocValue();
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// This will store the attribute set of the `nonFlakeRequires` and the `requires.provides`.
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state.mkAttrs(*vResult, flakes.size());
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state.mkAttrs(*vResult, dependencies.flakes.size());
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Value * vTop = 0;
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for (auto & flake : flakes) {
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auto vFlake = state.allocAttr(*vResult, flake.second.id);
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for (auto & flake : deps.flakes) {
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auto vFlake = state.allocAttr(*vResult, flake.id);
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if (topFlakeId == flake.second.id) vTop = vFlake;
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state.mkAttrs(*vFlake, 4);
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@ -38,15 +38,34 @@ struct Flake
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std::optional<uint64_t> revCount;
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std::vector<FlakeRef> requires;
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std::shared_ptr<FlakeRegistry> lockFile;
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std::map<FlakeId, FlakeRef> nonFlakeRequires;
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Value * vProvides; // FIXME: gc
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// commit hash
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// date
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// content hash
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Flake(FlakeRef & flakeRef) : ref(flakeRef) {};
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Flake(const FlakeRef flakeRef) : ref(flakeRef) {};
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};
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struct NonFlake
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{
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FlakeId id;
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FlakeRef ref;
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Path path;
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// date
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// content hash
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NonFlake(const FlakeRef flakeRef) : ref(flakeRef) {};
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};
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Flake getFlake(EvalState &, const FlakeRef &);
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struct Dependencies
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{
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FlakeId topFlakeId;
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std::vector<Flake> flakes;
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std::vector<NonFlake> nonFlakes;
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};
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Dependencies resolveFlake(EvalState &, const FlakeRef &, bool impureTopRef);
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FlakeRegistry updateLockFile(EvalState &, Flake &);
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void updateLockFile(EvalState &, std::string);
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@ -11,7 +11,7 @@ struct CmdBuild : MixDryRun, InstallablesCommand
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{
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Path outLink = "result";
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std::optional<std::string> gitRepo = std::nullopt;
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bool updateLock = true;
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CmdBuild()
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{
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@ -28,9 +28,9 @@ struct CmdBuild : MixDryRun, InstallablesCommand
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.set(&outLink, Path(""));
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mkFlag()
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.longName("update-lock-file")
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.description("update the lock file")
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.dest(&gitRepo);
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.longName("no-update")
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.description("don't update the lock file")
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.set(&updateLock, false);
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}
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std::string name() override
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@ -78,8 +78,10 @@ struct CmdBuild : MixDryRun, InstallablesCommand
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}
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}
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if (gitRepo)
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updateLockFile(*evalState, *gitRepo);
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if(updateLock)
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for (int i = 0; i < installables.size(); i++)
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if (auto flakeUri = installableToFlakeUri)
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updateLockFile(*evalState, FlakeRef(*flakeUri));
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}
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};
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@ -36,6 +36,60 @@ struct CmdFlakeList : StoreCommand, MixEvalArgs
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}
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};
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void printFlakeInfo(Flake & flake, bool json) {
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if (json) {
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nlohmann::json j;
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j["name"] = flake.id;
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j["location"] = flake.path;
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j["description"] = flake.description;
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std::cout << j.dump(4) << std::endl;
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} else {
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std::cout << "Name: " << flake.id << "\n";
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std::cout << "Description: " << flake.description << "\n";
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std::cout << "Location: " << flake.path << "\n";
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}
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}
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void printNonFlakeInfo(NonFlake & nonFlake, bool json) {
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if (json) {
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nlohmann::json j;
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j["name"] = nonFlake.id;
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j["location"] = nonFlake.path;
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std::cout << j.dump(4) << std::endl;
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} else {
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std::cout << "name: " << nonFlake.id << "\n";
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std::cout << "Location: " << nonFlake.path << "\n";
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}
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}
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struct CmdFlakeDeps : FlakeCommand, MixJSON, StoreCommand, MixEvalArgs
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{
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std::string name() override
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{
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return "deps";
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}
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std::string description() override
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{
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return "list informaton about dependencies";
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}
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void run(nix::ref<nix::Store> store) override
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{
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auto evalState = std::make_shared<EvalState>(searchPath, store);
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FlakeRef flakeRef(flakeUri);
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Dependencies deps = resolveFlake(*evalState, flakeRef, true);
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for (auto & flake : deps.flakes)
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printFlakeInfo(flake, json);
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for (auto & nonFlake : deps.nonFlakes)
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printNonFlakeInfo(nonFlake, json);
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}
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};
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struct CmdFlakeUpdate : StoreCommand, GitRepoCommand, MixEvalArgs
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{
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std::string name() override
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@ -73,15 +127,7 @@ struct CmdFlakeInfo : FlakeCommand, MixJSON, MixEvalArgs, StoreCommand
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{
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auto evalState = std::make_shared<EvalState>(searchPath, store);
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nix::Flake flake = nix::getFlake(*evalState, FlakeRef(flakeUri));
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if (json) {
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nlohmann::json j;
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j["location"] = flake.path;
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j["description"] = flake.description;
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std::cout << j.dump(4) << std::endl;
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} else {
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std::cout << "Description: " << flake.description << "\n";
|
||||
std::cout << "Location: " << flake.path << "\n";
|
||||
}
|
||||
printFlakeInfo(flake, json);
|
||||
}
|
||||
};
|
||||
|
||||
|
|
@ -218,6 +264,7 @@ struct CmdFlake : virtual MultiCommand, virtual Command
|
|||
: MultiCommand({make_ref<CmdFlakeList>()
|
||||
, make_ref<CmdFlakeUpdate>()
|
||||
, make_ref<CmdFlakeInfo>()
|
||||
, make_ref<CmdFlakeDeps>()
|
||||
, make_ref<CmdFlakeAdd>()
|
||||
, make_ref<CmdFlakeRemove>()
|
||||
, make_ref<CmdFlakePin>()
|
||||
|
|
|
|||
Loading…
Reference in a new issue