969 lines
36 KiB
C++
969 lines
36 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 "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.hh"
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#include "registry.hh"
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#include "json.hh"
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#include "eval-cache.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 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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expectArgs({
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.label = "flake-url",
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.optional = true,
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.handler = {&flakeUrl},
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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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}
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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(), lockFlags.useRegistries);
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}
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LockedFlake lockFlake()
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{
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return flake::lockFlake(*getEvalState(), getFlakeRef(), lockFlags);
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}
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std::optional<FlakeRef> getFlakeRefForCompletion() override
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{
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return getFlakeRef();
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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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logger->stdout("Resolved URL: %s", flake.resolvedRef.to_string());
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logger->stdout("Locked URL: %s", flake.lockedRef.to_string());
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if (flake.description)
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logger->stdout("Description: %s", *flake.description);
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logger->stdout("Path: %s", store.printStorePath(flake.sourceInfo->storePath));
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if (auto rev = flake.lockedRef.input.getRev())
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logger->stdout("Revision: %s", rev->to_string(Base16, false));
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if (auto revCount = flake.lockedRef.input.getRevCount())
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logger->stdout("Revisions: %s", *revCount);
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if (auto lastModified = flake.lockedRef.input.getLastModified())
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logger->stdout("Last modified: %s",
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std::put_time(std::localtime(&*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["originalUrl"] = flake.originalRef.to_string();
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j["original"] = attrsToJson(flake.originalRef.toAttrs());
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j["resolvedUrl"] = flake.resolvedRef.to_string();
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j["resolved"] = attrsToJson(flake.resolvedRef.toAttrs());
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j["url"] = flake.lockedRef.to_string(); // FIXME: rename to lockedUrl
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j["locked"] = attrsToJson(flake.lockedRef.toAttrs());
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if (auto rev = flake.lockedRef.input.getRev())
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j["revision"] = rev->to_string(Base16, false);
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if (auto revCount = flake.lockedRef.input.getRevCount())
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j["revCount"] = *revCount;
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if (auto lastModified = flake.lockedRef.input.getLastModified())
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j["lastModified"] = *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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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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/* Use --refresh by default for 'nix flake update'. */
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settings.tarballTtl = 0;
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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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auto flake = getFlake();
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if (json) {
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auto json = flakeToJson(*store, flake);
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logger->stdout("%s", json.dump());
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} else
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printFlakeInfo(*store, flake);
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}
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};
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struct CmdFlakeListInputs : FlakeCommand, MixJSON
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{
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std::string description() override
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{
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return "list flake inputs";
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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 flake = lockFlake();
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if (json)
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logger->stdout("%s", flake.lockFile.toJson());
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else {
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logger->stdout("%s", flake.flake.lockedRef);
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std::unordered_set<std::shared_ptr<Node>> visited;
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std::function<void(const Node & node, const std::string & prefix)> recurse;
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recurse = [&](const Node & node, const std::string & prefix)
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{
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for (const auto & [i, input] : enumerate(node.inputs)) {
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bool last = i + 1 == node.inputs.size();
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if (auto lockedNode = std::get_if<0>(&input.second)) {
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logger->stdout("%s" ANSI_BOLD "%s" ANSI_NORMAL ": %s",
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prefix + (last ? treeLast : treeConn), input.first,
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*lockedNode ? (*lockedNode)->lockedRef : flake.flake.lockedRef);
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bool firstVisit = visited.insert(*lockedNode).second;
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if (firstVisit) recurse(**lockedNode, prefix + (last ? treeNull : treeLine));
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} else if (auto follows = std::get_if<1>(&input.second)) {
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logger->stdout("%s" ANSI_BOLD "%s" ANSI_NORMAL " follows input '%s'",
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prefix + (last ? treeLast : treeConn), input.first,
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printInputPath(*follows));
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}
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}
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};
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visited.insert(flake.lockFile.root);
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recurse(*flake.lockFile.root, "");
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}
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}
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};
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struct CmdFlakeCheck : FlakeCommand
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{
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bool build = true;
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CmdFlakeCheck()
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{
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addFlag({
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.longName = "no-build",
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.description = "do not build checks",
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.handler = {&build, false}
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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 "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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// FIXME: rewrite to use EvalCache.
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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.addTrace(pos, hintfmt("while checking the derivation '%s'", attrPath));
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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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#if 0
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// FIXME
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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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store->parseStorePath(drvPathS);
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}
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#endif
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} catch (Error & e) {
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e.addTrace(pos, hintfmt("while checking the app definition '%s'", attrPath));
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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.addTrace(pos, hintfmt("while checking the overlay '%s'", attrPath));
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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.addTrace(*attr.pos, hintfmt("while evaluating the option '%s'", attr.name));
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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.addTrace(pos, hintfmt("while checking the NixOS module '%s'", attrPath));
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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.addTrace(pos, hintfmt("while checking the Hydra jobset '%s'", attrPath));
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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).first;
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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.addTrace(pos, hintfmt("while checking the NixOS configuration '%s'", attrPath));
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throw;
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}
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};
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auto checkTemplate = [&](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 template '%s'", attrPath));
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state->forceAttrs(v, pos);
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if (auto attr = v.attrs->get(state->symbols.create("path"))) {
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if (attr->name == state->symbols.create("path")) {
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PathSet context;
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auto path = state->coerceToPath(*attr->pos, *attr->value, context);
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if (!store->isInStore(path))
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throw Error("template '%s' has a bad 'path' attribute");
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// TODO: recursively check the flake in 'path'.
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}
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} else
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throw Error("template '%s' lacks attribute 'path'", attrPath);
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if (auto attr = v.attrs->get(state->symbols.create("description")))
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state->forceStringNoCtx(*attr->value, *attr->pos);
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else
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throw Error("template '%s' lacks attribute 'description'", attrPath);
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for (auto & attr : *v.attrs) {
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std::string name(attr.name);
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if (name != "path" && name != "description")
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throw Error("template '%s' has unsupported attribute '%s'", attrPath, name);
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}
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} catch (Error & e) {
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e.addTrace(pos, hintfmt("while checking the template '%s'", attrPath));
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throw;
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}
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};
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auto checkBundler = [&](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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throw Error("bundler must be a function");
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if (!v.lambda.fun->formals ||
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v.lambda.fun->formals->argNames.find(state->symbols.create("program")) == v.lambda.fun->formals->argNames.end() ||
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v.lambda.fun->formals->argNames.find(state->symbols.create("system")) == v.lambda.fun->formals->argNames.end())
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throw Error("bundler must take formal arguments 'program' and 'system'");
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} catch (Error & e) {
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e.addTrace(pos, hintfmt("while checking the template '%s'", attrPath));
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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.push_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 if (name == "defaultTemplate")
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checkTemplate(name, vOutput, pos);
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|
|
else if (name == "templates") {
|
|
state->forceAttrs(vOutput, pos);
|
|
for (auto & attr : *vOutput.attrs)
|
|
checkTemplate(fmt("%s.%s", name, attr.name),
|
|
*attr.value, *attr.pos);
|
|
}
|
|
|
|
else if (name == "defaultBundler")
|
|
checkBundler(name, vOutput, pos);
|
|
|
|
else if (name == "bundlers") {
|
|
state->forceAttrs(vOutput, pos);
|
|
for (auto & attr : *vOutput.attrs)
|
|
checkBundler(fmt("%s.%s", name, attr.name),
|
|
*attr.value, *attr.pos);
|
|
}
|
|
|
|
else
|
|
warn("unknown flake output '%s'", name);
|
|
|
|
} catch (Error & e) {
|
|
e.addTrace(pos, hintfmt("while checking flake output '%s'", name));
|
|
throw;
|
|
}
|
|
});
|
|
}
|
|
|
|
if (build && !drvPaths.empty()) {
|
|
Activity act(*logger, lvlInfo, actUnknown, "running flake checks");
|
|
store->buildPaths(drvPaths);
|
|
}
|
|
}
|
|
};
|
|
|
|
struct CmdFlakeInitCommon : virtual Args, EvalCommand
|
|
{
|
|
std::string templateUrl = "templates";
|
|
Path destDir;
|
|
|
|
const Strings attrsPathPrefixes{"templates."};
|
|
const LockFlags lockFlags{ .writeLockFile = false };
|
|
|
|
CmdFlakeInitCommon()
|
|
{
|
|
addFlag({
|
|
.longName = "template",
|
|
.shortName = 't',
|
|
.description = "the template to use",
|
|
.labels = {"template"},
|
|
.handler = {&templateUrl},
|
|
.completer = {[&](size_t, std::string_view prefix) {
|
|
completeFlakeRefWithFragment(
|
|
getEvalState(),
|
|
lockFlags,
|
|
attrsPathPrefixes,
|
|
{"defaultTemplate"},
|
|
prefix);
|
|
}}
|
|
});
|
|
}
|
|
|
|
void run(nix::ref<nix::Store> store) override
|
|
{
|
|
auto flakeDir = absPath(destDir);
|
|
|
|
auto evalState = getEvalState();
|
|
|
|
auto [templateFlakeRef, templateName] = parseFlakeRefWithFragment(templateUrl, absPath("."));
|
|
|
|
auto installable = InstallableFlake(
|
|
evalState, std::move(templateFlakeRef),
|
|
Strings{templateName == "" ? "defaultTemplate" : templateName},
|
|
Strings(attrsPathPrefixes), lockFlags);
|
|
|
|
auto [cursor, attrPath] = installable.getCursor(*evalState);
|
|
|
|
auto templateDir = cursor->getAttr("path")->getString();
|
|
|
|
assert(store->isInStore(templateDir));
|
|
|
|
std::vector<Path> files;
|
|
|
|
std::function<void(const Path & from, const Path & to)> copyDir;
|
|
copyDir = [&](const Path & from, const Path & to)
|
|
{
|
|
createDirs(to);
|
|
|
|
for (auto & entry : readDirectory(from)) {
|
|
auto from2 = from + "/" + entry.name;
|
|
auto to2 = to + "/" + entry.name;
|
|
auto st = lstat(from2);
|
|
if (S_ISDIR(st.st_mode))
|
|
copyDir(from2, to2);
|
|
else if (S_ISREG(st.st_mode)) {
|
|
auto contents = readFile(from2);
|
|
if (pathExists(to2)) {
|
|
auto contents2 = readFile(to2);
|
|
if (contents != contents2)
|
|
throw Error("refusing to overwrite existing file '%s'", to2);
|
|
} else
|
|
writeFile(to2, contents);
|
|
}
|
|
else if (S_ISLNK(st.st_mode)) {
|
|
auto target = readLink(from2);
|
|
if (pathExists(to2)) {
|
|
if (readLink(to2) != target)
|
|
throw Error("refusing to overwrite existing symlink '%s'", to2);
|
|
} else
|
|
createSymlink(target, to2);
|
|
}
|
|
else
|
|
throw Error("file '%s' has unsupported type", from2);
|
|
files.push_back(to2);
|
|
}
|
|
};
|
|
|
|
copyDir(templateDir, flakeDir);
|
|
|
|
if (pathExists(flakeDir + "/.git")) {
|
|
Strings args = { "-C", flakeDir, "add", "--intent-to-add", "--force", "--" };
|
|
for (auto & s : files) args.push_back(s);
|
|
runProgram("git", true, args);
|
|
}
|
|
}
|
|
};
|
|
|
|
struct CmdFlakeInit : CmdFlakeInitCommon
|
|
{
|
|
std::string description() override
|
|
{
|
|
return "create a flake in the current directory from a template";
|
|
}
|
|
|
|
Examples examples() override
|
|
{
|
|
return {
|
|
Example{
|
|
"To create a flake using the default template:",
|
|
"nix flake init"
|
|
},
|
|
Example{
|
|
"To see available templates:",
|
|
"nix flake show templates"
|
|
},
|
|
Example{
|
|
"To create a flake from a specific template:",
|
|
"nix flake init -t templates#nixos-container"
|
|
},
|
|
};
|
|
}
|
|
|
|
CmdFlakeInit()
|
|
{
|
|
destDir = ".";
|
|
}
|
|
};
|
|
|
|
struct CmdFlakeNew : CmdFlakeInitCommon
|
|
{
|
|
std::string description() override
|
|
{
|
|
return "create a flake in the specified directory from a template";
|
|
}
|
|
|
|
CmdFlakeNew()
|
|
{
|
|
expectArgs({
|
|
.label = "dest-dir",
|
|
.handler = {&destDir},
|
|
.completer = completePath
|
|
});
|
|
}
|
|
};
|
|
|
|
struct CmdFlakeClone : FlakeCommand
|
|
{
|
|
Path destDir;
|
|
|
|
std::string description() override
|
|
{
|
|
return "clone flake repository";
|
|
}
|
|
|
|
CmdFlakeClone()
|
|
{
|
|
addFlag({
|
|
.longName = "dest",
|
|
.shortName = 'f',
|
|
.description = "destination path",
|
|
.labels = {"path"},
|
|
.handler = {&destDir}
|
|
});
|
|
}
|
|
|
|
void run(nix::ref<nix::Store> store) override
|
|
{
|
|
if (destDir.empty())
|
|
throw Error("missing flag '--dest'");
|
|
|
|
getFlakeRef().resolve(store).input.clone(destDir);
|
|
}
|
|
};
|
|
|
|
struct CmdFlakeArchive : FlakeCommand, MixJSON, MixDryRun
|
|
{
|
|
std::string dstUri;
|
|
|
|
CmdFlakeArchive()
|
|
{
|
|
addFlag({
|
|
.longName = "to",
|
|
.description = "URI of the destination Nix store",
|
|
.labels = {"store-uri"},
|
|
.handler = {&dstUri}
|
|
});
|
|
}
|
|
|
|
std::string description() override
|
|
{
|
|
return "copy a flake and all its inputs to a store";
|
|
}
|
|
|
|
Examples examples() override
|
|
{
|
|
return {
|
|
Example{
|
|
"To copy the dwarffs flake and its dependencies to a binary cache:",
|
|
"nix flake archive --to file:///tmp/my-cache dwarffs"
|
|
},
|
|
Example{
|
|
"To fetch the dwarffs flake and its dependencies to the local Nix store:",
|
|
"nix flake archive dwarffs"
|
|
},
|
|
Example{
|
|
"To print the store paths of the flake sources of NixOps without fetching them:",
|
|
"nix flake archive --json --dry-run nixops"
|
|
},
|
|
};
|
|
}
|
|
|
|
void run(nix::ref<nix::Store> store) override
|
|
{
|
|
auto flake = lockFlake();
|
|
|
|
auto jsonRoot = json ? std::optional<JSONObject>(std::cout) : std::nullopt;
|
|
|
|
StorePathSet sources;
|
|
|
|
sources.insert(flake.flake.sourceInfo->storePath);
|
|
if (jsonRoot)
|
|
jsonRoot->attr("path", store->printStorePath(flake.flake.sourceInfo->storePath));
|
|
|
|
// FIXME: use graph output, handle cycles.
|
|
std::function<void(const Node & node, std::optional<JSONObject> & jsonObj)> traverse;
|
|
traverse = [&](const Node & node, std::optional<JSONObject> & jsonObj)
|
|
{
|
|
auto jsonObj2 = jsonObj ? jsonObj->object("inputs") : std::optional<JSONObject>();
|
|
for (auto & [inputName, input] : node.inputs) {
|
|
if (auto inputNode = std::get_if<0>(&input)) {
|
|
auto jsonObj3 = jsonObj2 ? jsonObj2->object(inputName) : std::optional<JSONObject>();
|
|
auto storePath =
|
|
dryRun
|
|
? (*inputNode)->lockedRef.input.computeStorePath(*store)
|
|
: (*inputNode)->lockedRef.input.fetch(store).first.storePath;
|
|
if (jsonObj3)
|
|
jsonObj3->attr("path", store->printStorePath(storePath));
|
|
sources.insert(std::move(storePath));
|
|
traverse(**inputNode, jsonObj3);
|
|
}
|
|
}
|
|
};
|
|
|
|
traverse(*flake.lockFile.root, jsonRoot);
|
|
|
|
if (!dryRun && !dstUri.empty()) {
|
|
ref<Store> dstStore = dstUri.empty() ? openStore() : openStore(dstUri);
|
|
copyPaths(store, dstStore, sources);
|
|
}
|
|
}
|
|
};
|
|
|
|
struct CmdFlakeShow : FlakeCommand
|
|
{
|
|
bool showLegacy = false;
|
|
|
|
CmdFlakeShow()
|
|
{
|
|
addFlag({
|
|
.longName = "legacy",
|
|
.description = "show the contents of the 'legacyPackages' output",
|
|
.handler = {&showLegacy, true}
|
|
});
|
|
}
|
|
|
|
std::string description() override
|
|
{
|
|
return "show the outputs provided by a flake";
|
|
}
|
|
|
|
void run(nix::ref<nix::Store> store) override
|
|
{
|
|
auto state = getEvalState();
|
|
auto flake = std::make_shared<LockedFlake>(lockFlake());
|
|
|
|
std::function<void(eval_cache::AttrCursor & visitor, const std::vector<Symbol> & attrPath, const std::string & headerPrefix, const std::string & nextPrefix)> visit;
|
|
|
|
visit = [&](eval_cache::AttrCursor & visitor, const std::vector<Symbol> & attrPath, const std::string & headerPrefix, const std::string & nextPrefix)
|
|
{
|
|
Activity act(*logger, lvlInfo, actUnknown,
|
|
fmt("evaluating '%s'", concatStringsSep(".", attrPath)));
|
|
try {
|
|
auto recurse = [&]()
|
|
{
|
|
logger->stdout("%s", headerPrefix);
|
|
auto attrs = visitor.getAttrs();
|
|
for (const auto & [i, attr] : enumerate(attrs)) {
|
|
bool last = i + 1 == attrs.size();
|
|
auto visitor2 = visitor.getAttr(attr);
|
|
auto attrPath2(attrPath);
|
|
attrPath2.push_back(attr);
|
|
visit(*visitor2, attrPath2,
|
|
fmt(ANSI_GREEN "%s%s" ANSI_NORMAL ANSI_BOLD "%s" ANSI_NORMAL, nextPrefix, last ? treeLast : treeConn, attr),
|
|
nextPrefix + (last ? treeNull : treeLine));
|
|
}
|
|
};
|
|
|
|
auto showDerivation = [&]()
|
|
{
|
|
auto name = visitor.getAttr(state->sName)->getString();
|
|
|
|
/*
|
|
std::string description;
|
|
|
|
if (auto aMeta = visitor.maybeGetAttr("meta")) {
|
|
if (auto aDescription = aMeta->maybeGetAttr("description"))
|
|
description = aDescription->getString();
|
|
}
|
|
*/
|
|
|
|
logger->stdout("%s: %s '%s'",
|
|
headerPrefix,
|
|
attrPath.size() == 2 && attrPath[0] == "devShell" ? "development environment" :
|
|
attrPath.size() == 3 && attrPath[0] == "checks" ? "derivation" :
|
|
attrPath.size() >= 1 && attrPath[0] == "hydraJobs" ? "derivation" :
|
|
"package",
|
|
name);
|
|
};
|
|
|
|
if (attrPath.size() == 0
|
|
|| (attrPath.size() == 1 && (
|
|
attrPath[0] == "defaultPackage"
|
|
|| attrPath[0] == "devShell"
|
|
|| attrPath[0] == "nixosConfigurations"
|
|
|| attrPath[0] == "nixosModules"
|
|
|| attrPath[0] == "defaultApp"
|
|
|| attrPath[0] == "templates"))
|
|
|| ((attrPath.size() == 1 || attrPath.size() == 2)
|
|
&& (attrPath[0] == "checks"
|
|
|| attrPath[0] == "packages"
|
|
|| attrPath[0] == "apps"))
|
|
)
|
|
{
|
|
recurse();
|
|
}
|
|
|
|
else if (
|
|
(attrPath.size() == 2 && (attrPath[0] == "defaultPackage" || attrPath[0] == "devShell"))
|
|
|| (attrPath.size() == 3 && (attrPath[0] == "checks" || attrPath[0] == "packages"))
|
|
)
|
|
{
|
|
if (visitor.isDerivation())
|
|
showDerivation();
|
|
else
|
|
throw Error("expected a derivation");
|
|
}
|
|
|
|
else if (attrPath.size() > 0 && attrPath[0] == "hydraJobs") {
|
|
if (visitor.isDerivation())
|
|
showDerivation();
|
|
else
|
|
recurse();
|
|
}
|
|
|
|
else if (attrPath.size() > 0 && attrPath[0] == "legacyPackages") {
|
|
if (attrPath.size() == 1)
|
|
recurse();
|
|
else if (!showLegacy)
|
|
logger->stdout("%s: " ANSI_YELLOW "omitted" ANSI_NORMAL " (use '--legacy' to show)", headerPrefix);
|
|
else {
|
|
if (visitor.isDerivation())
|
|
showDerivation();
|
|
else if (attrPath.size() <= 2)
|
|
// FIXME: handle recurseIntoAttrs
|
|
recurse();
|
|
}
|
|
}
|
|
|
|
else if (
|
|
(attrPath.size() == 2 && attrPath[0] == "defaultApp") ||
|
|
(attrPath.size() == 3 && attrPath[0] == "apps"))
|
|
{
|
|
auto aType = visitor.maybeGetAttr("type");
|
|
if (!aType || aType->getString() != "app")
|
|
throw EvalError("not an app definition");
|
|
logger->stdout("%s: app", headerPrefix);
|
|
}
|
|
|
|
else if (
|
|
(attrPath.size() == 1 && attrPath[0] == "defaultTemplate") ||
|
|
(attrPath.size() == 2 && attrPath[0] == "templates"))
|
|
{
|
|
auto description = visitor.getAttr("description")->getString();
|
|
logger->stdout("%s: template: " ANSI_BOLD "%s" ANSI_NORMAL, headerPrefix, description);
|
|
}
|
|
|
|
else {
|
|
logger->stdout("%s: %s",
|
|
headerPrefix,
|
|
attrPath.size() == 1 && attrPath[0] == "overlay" ? "Nixpkgs overlay" :
|
|
attrPath.size() == 2 && attrPath[0] == "nixosConfigurations" ? "NixOS configuration" :
|
|
attrPath.size() == 2 && attrPath[0] == "nixosModules" ? "NixOS module" :
|
|
ANSI_YELLOW "unknown" ANSI_NORMAL);
|
|
}
|
|
} catch (EvalError & e) {
|
|
if (!(attrPath.size() > 0 && attrPath[0] == "legacyPackages"))
|
|
throw;
|
|
}
|
|
};
|
|
|
|
auto cache = openEvalCache(*state, flake);
|
|
|
|
visit(*cache->getRoot(), {}, fmt(ANSI_BOLD "%s" ANSI_NORMAL, flake->flake.lockedRef), "");
|
|
}
|
|
};
|
|
|
|
struct CmdFlake : NixMultiCommand
|
|
{
|
|
CmdFlake()
|
|
: MultiCommand({
|
|
{"update", []() { return make_ref<CmdFlakeUpdate>(); }},
|
|
{"info", []() { return make_ref<CmdFlakeInfo>(); }},
|
|
{"list-inputs", []() { return make_ref<CmdFlakeListInputs>(); }},
|
|
{"check", []() { return make_ref<CmdFlakeCheck>(); }},
|
|
{"init", []() { return make_ref<CmdFlakeInit>(); }},
|
|
{"new", []() { return make_ref<CmdFlakeNew>(); }},
|
|
{"clone", []() { return make_ref<CmdFlakeClone>(); }},
|
|
{"archive", []() { return make_ref<CmdFlakeArchive>(); }},
|
|
{"show", []() { return make_ref<CmdFlakeShow>(); }},
|
|
})
|
|
{
|
|
}
|
|
|
|
std::string description() override
|
|
{
|
|
return "manage Nix flakes";
|
|
}
|
|
|
|
void run() override
|
|
{
|
|
if (!command)
|
|
throw UsageError("'nix flake' requires a sub-command.");
|
|
settings.requireExperimentalFeature("flakes");
|
|
command->second->prepare();
|
|
command->second->run();
|
|
}
|
|
};
|
|
|
|
static auto r1 = registerCommand<CmdFlake>("flake");
|