forked from lix-project/lix
644 lines
22 KiB
C++
644 lines
22 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 "progress-bar.hh"
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#include "eval.hh"
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#include "eval-inline.hh"
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#include "flake/flake.hh"
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#include "get-drvs.hh"
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#include "store-api.hh"
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#include "derivations.hh"
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#include "attr-path.hh"
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#include "fetchers/fetchers.hh"
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#include "fetchers/registry.hh"
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#include <nlohmann/json.hpp>
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#include <queue>
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#include <iomanip>
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using namespace nix;
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using namespace nix::flake;
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class FlakeCommand : virtual Args, public EvalCommand, public MixFlakeOptions
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{
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std::string flakeUrl = ".";
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public:
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FlakeCommand()
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{
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expectArg("flake-url", &flakeUrl, true);
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}
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FlakeRef getFlakeRef()
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{
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return parseFlakeRef(flakeUrl, absPath(".")); //FIXME
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}
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Flake getFlake()
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{
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auto evalState = getEvalState();
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return flake::getFlake(*evalState, getFlakeRef(), useRegistries);
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}
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LockedFlake lockFlake()
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{
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return flake::lockFlake(*getEvalState(), getFlakeRef(), getLockFileMode());
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}
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};
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struct CmdFlakeList : EvalCommand
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{
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std::string description() override
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{
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return "list available Nix flakes";
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}
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void run(nix::ref<nix::Store> store) override
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{
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using namespace fetchers;
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auto registries = getRegistries(store);
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stopProgressBar();
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for (auto & registry : registries) {
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for (auto & entry : registry->entries) {
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// FIXME: format nicely
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std::cout << fmt("%s %s %s\n",
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registry->type == Registry::Flag ? "flags " :
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registry->type == Registry::User ? "user " :
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"global",
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entry.first->to_string(),
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entry.second->to_string());
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}
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}
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}
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};
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static void printFlakeInfo(const Store & store, const Flake & flake)
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{
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std::cout << fmt("URL: %s\n", flake.resolvedRef.input->to_string());
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std::cout << fmt("Edition: %s\n", flake.edition);
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if (flake.description)
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std::cout << fmt("Description: %s\n", *flake.description);
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std::cout << fmt("Path: %s\n", store.printStorePath(flake.sourceInfo->storePath));
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if (flake.sourceInfo->rev)
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std::cout << fmt("Revision: %s\n", flake.sourceInfo->rev->to_string(Base16, false));
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if (flake.sourceInfo->revCount)
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std::cout << fmt("Revisions: %s\n", *flake.sourceInfo->revCount);
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if (flake.sourceInfo->lastModified)
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std::cout << fmt("Last modified: %s\n",
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std::put_time(std::localtime(&*flake.sourceInfo->lastModified), "%F %T"));
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}
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static nlohmann::json flakeToJson(const Store & store, const Flake & flake)
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{
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nlohmann::json j;
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if (flake.description)
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j["description"] = *flake.description;
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j["edition"] = flake.edition;
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j["url"] = flake.resolvedRef.input->to_string();
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if (flake.sourceInfo->rev)
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j["revision"] = flake.sourceInfo->rev->to_string(Base16, false);
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if (flake.sourceInfo->revCount)
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j["revCount"] = *flake.sourceInfo->revCount;
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if (flake.sourceInfo->lastModified)
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j["lastModified"] = *flake.sourceInfo->lastModified;
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j["path"] = store.printStorePath(flake.sourceInfo->storePath);
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return j;
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}
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#if 0
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// FIXME: merge info CmdFlakeInfo?
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struct CmdFlakeDeps : FlakeCommand
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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 = getEvalState();
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std::queue<LockedFlake> todo;
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todo.push(lockFlake());
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stopProgressBar();
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while (!todo.empty()) {
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auto lockedFlake = std::move(todo.front());
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todo.pop();
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for (auto & info : lockedFlake.flakeDeps) {
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printFlakeInfo(*store, info.second.flake);
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todo.push(info.second);
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}
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}
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}
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};
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#endif
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struct CmdFlakeUpdate : FlakeCommand
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{
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std::string description() override
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{
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return "update flake lock file";
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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 = getEvalState();
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lockFlake();
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}
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};
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static void enumerateOutputs(EvalState & state, Value & vFlake,
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std::function<void(const std::string & name, Value & vProvide, const Pos & pos)> callback)
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{
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state.forceAttrs(vFlake);
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auto aOutputs = vFlake.attrs->get(state.symbols.create("outputs"));
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assert(aOutputs);
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state.forceAttrs(*(*aOutputs)->value);
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for (auto & attr : *((*aOutputs)->value->attrs))
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callback(attr.name, *attr.value, *attr.pos);
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}
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struct CmdFlakeInfo : FlakeCommand, MixJSON
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{
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std::string description() override
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{
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return "list info about a given flake";
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}
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void run(nix::ref<nix::Store> store) override
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{
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if (json) {
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auto state = getEvalState();
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auto flake = lockFlake();
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auto json = flakeToJson(*store, flake.flake);
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auto vFlake = state->allocValue();
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flake::callFlake(*state, flake, *vFlake);
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auto outputs = nlohmann::json::object();
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enumerateOutputs(*state,
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*vFlake,
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[&](const std::string & name, Value & vProvide, const Pos & pos) {
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auto provide = nlohmann::json::object();
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if (name == "checks" || name == "packages") {
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state->forceAttrs(vProvide, pos);
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for (auto & aCheck : *vProvide.attrs)
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provide[aCheck.name] = nlohmann::json::object();
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}
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outputs[name] = provide;
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});
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json["outputs"] = std::move(outputs);
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std::cout << json.dump() << std::endl;
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} else {
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auto flake = getFlake();
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stopProgressBar();
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printFlakeInfo(*store, flake);
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}
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}
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};
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struct CmdFlakeCheck : FlakeCommand, MixJSON
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{
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bool build = true;
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CmdFlakeCheck()
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{
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mkFlag()
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.longName("no-build")
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.description("do not build checks")
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.set(&build, false);
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}
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std::string description() override
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{
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return "check whether the flake evaluates and run its tests";
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}
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void run(nix::ref<nix::Store> store) override
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{
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settings.readOnlyMode = !build;
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auto state = getEvalState();
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auto flake = lockFlake();
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auto checkSystemName = [&](const std::string & system, const Pos & pos) {
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// FIXME: what's the format of "system"?
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if (system.find('-') == std::string::npos)
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throw Error("'%s' is not a valid system type, at %s", system, pos);
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};
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auto checkDerivation = [&](const std::string & attrPath, Value & v, const Pos & pos) {
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try {
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auto drvInfo = getDerivation(*state, v, false);
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if (!drvInfo)
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throw Error("flake attribute '%s' is not a derivation", attrPath);
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// FIXME: check meta attributes
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return store->parseStorePath(drvInfo->queryDrvPath());
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} catch (Error & e) {
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e.addPrefix(fmt("while checking the derivation '" ANSI_BOLD "%s" ANSI_NORMAL "' at %s:\n", attrPath, pos));
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throw;
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}
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};
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std::vector<StorePathWithOutputs> drvPaths;
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auto checkApp = [&](const std::string & attrPath, Value & v, const Pos & pos) {
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try {
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auto app = App(*state, v);
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for (auto & i : app.context) {
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auto [drvPathS, outputName] = decodeContext(i);
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auto drvPath = store->parseStorePath(drvPathS);
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if (!outputName.empty() && drvPath.isDerivation())
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drvPaths.emplace_back(drvPath);
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}
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} catch (Error & e) {
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e.addPrefix(fmt("while checking the app definition '" ANSI_BOLD "%s" ANSI_NORMAL "' at %s:\n", attrPath, pos));
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throw;
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}
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};
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auto checkOverlay = [&](const std::string & attrPath, Value & v, const Pos & pos) {
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try {
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state->forceValue(v, pos);
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if (v.type != tLambda || v.lambda.fun->matchAttrs || std::string(v.lambda.fun->arg) != "final")
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throw Error("overlay does not take an argument named 'final'");
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auto body = dynamic_cast<ExprLambda *>(v.lambda.fun->body);
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if (!body || body->matchAttrs || std::string(body->arg) != "prev")
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throw Error("overlay does not take an argument named 'prev'");
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// FIXME: if we have a 'nixpkgs' input, use it to
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// evaluate the overlay.
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} catch (Error & e) {
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e.addPrefix(fmt("while checking the overlay '" ANSI_BOLD "%s" ANSI_NORMAL "' at %s:\n", attrPath, pos));
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throw;
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}
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};
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auto checkModule = [&](const std::string & attrPath, Value & v, const Pos & pos) {
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try {
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state->forceValue(v, pos);
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if (v.type == tLambda) {
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if (!v.lambda.fun->matchAttrs || !v.lambda.fun->formals->ellipsis)
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throw Error("module must match an open attribute set ('{ config, ... }')");
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} else if (v.type == tAttrs) {
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for (auto & attr : *v.attrs)
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try {
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state->forceValue(*attr.value, *attr.pos);
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} catch (Error & e) {
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e.addPrefix(fmt("while evaluating the option '" ANSI_BOLD "%s" ANSI_NORMAL "' at %s:\n", attr.name, *attr.pos));
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throw;
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}
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} else
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throw Error("module must be a function or an attribute set");
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// FIXME: if we have a 'nixpkgs' input, use it to
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// check the module.
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} catch (Error & e) {
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e.addPrefix(fmt("while checking the NixOS module '" ANSI_BOLD "%s" ANSI_NORMAL "' at %s:\n", attrPath, pos));
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throw;
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}
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};
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std::function<void(const std::string & attrPath, Value & v, const Pos & pos)> checkHydraJobs;
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checkHydraJobs = [&](const std::string & attrPath, Value & v, const Pos & pos) {
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try {
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state->forceAttrs(v, pos);
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if (state->isDerivation(v))
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throw Error("jobset should not be a derivation at top-level");
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for (auto & attr : *v.attrs) {
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state->forceAttrs(*attr.value, *attr.pos);
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if (!state->isDerivation(*attr.value))
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checkHydraJobs(attrPath + "." + (std::string) attr.name,
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*attr.value, *attr.pos);
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}
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} catch (Error & e) {
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e.addPrefix(fmt("while checking the Hydra jobset '" ANSI_BOLD "%s" ANSI_NORMAL "' at %s:\n", attrPath, pos));
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throw;
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}
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};
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auto checkNixOSConfiguration = [&](const std::string & attrPath, Value & v, const Pos & pos) {
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try {
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Activity act(*logger, lvlChatty, actUnknown,
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fmt("checking NixOS configuration '%s'", attrPath));
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Bindings & bindings(*state->allocBindings(0));
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auto vToplevel = findAlongAttrPath(*state, "config.system.build.toplevel", bindings, v);
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state->forceAttrs(*vToplevel, pos);
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if (!state->isDerivation(*vToplevel))
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throw Error("attribute 'config.system.build.toplevel' is not a derivation");
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} catch (Error & e) {
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e.addPrefix(fmt("while checking the NixOS configuration '" ANSI_BOLD "%s" ANSI_NORMAL "' at %s:\n", attrPath, pos));
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throw;
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}
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};
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{
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Activity act(*logger, lvlInfo, actUnknown, "evaluating flake");
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auto vFlake = state->allocValue();
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flake::callFlake(*state, flake, *vFlake);
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enumerateOutputs(*state,
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*vFlake,
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[&](const std::string & name, Value & vOutput, const Pos & pos) {
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Activity act(*logger, lvlChatty, actUnknown,
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fmt("checking flake output '%s'", name));
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try {
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state->forceValue(vOutput, pos);
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if (name == "checks") {
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state->forceAttrs(vOutput, pos);
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for (auto & attr : *vOutput.attrs) {
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checkSystemName(attr.name, *attr.pos);
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state->forceAttrs(*attr.value, *attr.pos);
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for (auto & attr2 : *attr.value->attrs) {
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auto drvPath = checkDerivation(
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fmt("%s.%s.%s", name, attr.name, attr2.name),
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*attr2.value, *attr2.pos);
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if ((std::string) attr.name == settings.thisSystem.get())
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drvPaths.emplace_back(drvPath);
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}
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}
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}
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else if (name == "packages") {
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state->forceAttrs(vOutput, pos);
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for (auto & attr : *vOutput.attrs) {
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checkSystemName(attr.name, *attr.pos);
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state->forceAttrs(*attr.value, *attr.pos);
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for (auto & attr2 : *attr.value->attrs)
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checkDerivation(
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fmt("%s.%s.%s", name, attr.name, attr2.name),
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*attr2.value, *attr2.pos);
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}
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}
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else if (name == "apps") {
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state->forceAttrs(vOutput, pos);
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for (auto & attr : *vOutput.attrs) {
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checkSystemName(attr.name, *attr.pos);
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state->forceAttrs(*attr.value, *attr.pos);
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for (auto & attr2 : *attr.value->attrs)
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checkApp(
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fmt("%s.%s.%s", name, attr.name, attr2.name),
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*attr2.value, *attr2.pos);
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}
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}
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else if (name == "defaultPackage" || name == "devShell") {
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state->forceAttrs(vOutput, pos);
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for (auto & attr : *vOutput.attrs) {
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checkSystemName(attr.name, *attr.pos);
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checkDerivation(
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fmt("%s.%s", name, attr.name),
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*attr.value, *attr.pos);
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}
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}
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else if (name == "defaultApp") {
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state->forceAttrs(vOutput, pos);
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for (auto & attr : *vOutput.attrs) {
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checkSystemName(attr.name, *attr.pos);
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checkApp(
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fmt("%s.%s", name, attr.name),
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*attr.value, *attr.pos);
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}
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}
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else if (name == "legacyPackages") {
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state->forceAttrs(vOutput, pos);
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for (auto & attr : *vOutput.attrs) {
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checkSystemName(attr.name, *attr.pos);
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// FIXME: do getDerivations?
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}
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}
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else if (name == "overlay")
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checkOverlay(name, vOutput, pos);
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else if (name == "overlays") {
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state->forceAttrs(vOutput, pos);
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for (auto & attr : *vOutput.attrs)
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checkOverlay(fmt("%s.%s", name, attr.name),
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*attr.value, *attr.pos);
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}
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else if (name == "nixosModule")
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checkModule(name, vOutput, pos);
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else if (name == "nixosModules") {
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state->forceAttrs(vOutput, pos);
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for (auto & attr : *vOutput.attrs)
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checkModule(fmt("%s.%s", name, attr.name),
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*attr.value, *attr.pos);
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}
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else if (name == "nixosConfigurations") {
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state->forceAttrs(vOutput, pos);
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for (auto & attr : *vOutput.attrs)
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checkNixOSConfiguration(fmt("%s.%s", name, attr.name),
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*attr.value, *attr.pos);
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}
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else if (name == "hydraJobs")
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checkHydraJobs(name, vOutput, pos);
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else
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warn("unknown flake output '%s'", name);
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} catch (Error & e) {
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e.addPrefix(fmt("while checking flake output '" ANSI_BOLD "%s" ANSI_NORMAL "':\n", name));
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throw;
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}
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});
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}
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if (build && !drvPaths.empty()) {
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Activity act(*logger, lvlInfo, actUnknown, "running flake checks");
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store->buildPaths(drvPaths);
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}
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}
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};
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struct CmdFlakeAdd : MixEvalArgs, Command
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{
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std::string fromUrl, toUrl;
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std::string description() override
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{
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return "upsert flake in user flake registry";
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}
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CmdFlakeAdd()
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{
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expectArg("from-url", &fromUrl);
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expectArg("to-url", &toUrl);
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}
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void run() override
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{
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auto fromRef = parseFlakeRef(fromUrl);
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auto toRef = parseFlakeRef(toUrl);
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auto userRegistry = fetchers::getUserRegistry();
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userRegistry->remove(fromRef.input);
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userRegistry->add(fromRef.input, toRef.input);
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userRegistry->write(fetchers::getUserRegistryPath());
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}
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};
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struct CmdFlakeRemove : virtual Args, MixEvalArgs, Command
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{
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std::string url;
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std::string description() override
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{
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return "remove flake from user flake registry";
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}
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CmdFlakeRemove()
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{
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expectArg("url", &url);
|
|
}
|
|
|
|
void run() override
|
|
{
|
|
auto userRegistry = fetchers::getUserRegistry();
|
|
userRegistry->remove(parseFlakeRef(url).input);
|
|
userRegistry->write(fetchers::getUserRegistryPath());
|
|
}
|
|
};
|
|
|
|
struct CmdFlakePin : virtual Args, EvalCommand
|
|
{
|
|
std::string url;
|
|
|
|
std::string description() override
|
|
{
|
|
return "pin a flake to its current version in user flake registry";
|
|
}
|
|
|
|
CmdFlakePin()
|
|
{
|
|
expectArg("url", &url);
|
|
}
|
|
|
|
void run(nix::ref<nix::Store> store) override
|
|
{
|
|
auto ref = parseFlakeRef(url);
|
|
auto userRegistry = fetchers::getUserRegistry();
|
|
userRegistry->remove(ref.input);
|
|
auto [tree, resolved] = ref.resolve(store).input->fetchTree(store);
|
|
userRegistry->add(ref.input, resolved);
|
|
}
|
|
};
|
|
|
|
struct CmdFlakeInit : virtual Args, Command
|
|
{
|
|
std::string description() override
|
|
{
|
|
return "create a skeleton 'flake.nix' file in the current directory";
|
|
}
|
|
|
|
void run() override
|
|
{
|
|
Path flakeDir = absPath(".");
|
|
|
|
if (!pathExists(flakeDir + "/.git"))
|
|
throw Error("the directory '%s' is not a Git repository", flakeDir);
|
|
|
|
Path flakePath = flakeDir + "/flake.nix";
|
|
|
|
if (pathExists(flakePath))
|
|
throw Error("file '%s' already exists", flakePath);
|
|
|
|
writeFile(flakePath,
|
|
#include "flake-template.nix.gen.hh"
|
|
);
|
|
}
|
|
};
|
|
|
|
struct CmdFlakeClone : FlakeCommand
|
|
{
|
|
Path destDir;
|
|
|
|
std::string description() override
|
|
{
|
|
return "clone flake repository";
|
|
}
|
|
|
|
CmdFlakeClone()
|
|
{
|
|
mkFlag()
|
|
.shortName('f')
|
|
.longName("dest")
|
|
.label("path")
|
|
.description("destination path")
|
|
.dest(&destDir);
|
|
}
|
|
|
|
void run(nix::ref<nix::Store> store) override
|
|
{
|
|
if (destDir.empty())
|
|
throw Error("missing flag '--dest'");
|
|
|
|
getFlakeRef().resolve(store).input->clone(destDir);
|
|
}
|
|
};
|
|
|
|
struct CmdFlake : virtual MultiCommand, virtual Command
|
|
{
|
|
CmdFlake()
|
|
: MultiCommand({
|
|
{"list", []() { return make_ref<CmdFlakeList>(); }},
|
|
{"update", []() { return make_ref<CmdFlakeUpdate>(); }},
|
|
{"info", []() { return make_ref<CmdFlakeInfo>(); }},
|
|
{"check", []() { return make_ref<CmdFlakeCheck>(); }},
|
|
{"add", []() { return make_ref<CmdFlakeAdd>(); }},
|
|
{"remove", []() { return make_ref<CmdFlakeRemove>(); }},
|
|
{"pin", []() { return make_ref<CmdFlakePin>(); }},
|
|
{"init", []() { return make_ref<CmdFlakeInit>(); }},
|
|
{"clone", []() { return make_ref<CmdFlakeClone>(); }},
|
|
})
|
|
{
|
|
}
|
|
|
|
std::string description() override
|
|
{
|
|
return "manage Nix flakes";
|
|
}
|
|
|
|
void run() override
|
|
{
|
|
if (!command)
|
|
throw UsageError("'nix flake' requires a sub-command.");
|
|
command->prepare();
|
|
command->run();
|
|
}
|
|
|
|
void printHelp(const string & programName, std::ostream & out) override
|
|
{
|
|
MultiCommand::printHelp(programName, out);
|
|
}
|
|
};
|
|
|
|
static auto r1 = registerCommand<CmdFlake>("flake");
|