forked from lix-project/lix
606 lines
23 KiB
C++
606 lines
23 KiB
C++
#include "flake.hh"
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#include "primops.hh"
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#include "eval-inline.hh"
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#include "fetchGit.hh"
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#include "download.hh"
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#include "args.hh"
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#include <iostream>
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#include <queue>
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#include <regex>
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#include <nlohmann/json.hpp>
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namespace nix {
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/* Read a registry. */
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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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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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if (version != 1)
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throw Error("flake registry '%s' has unsupported version %d", path, version);
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auto flakes = json["flakes"];
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for (auto i = flakes.begin(); i != flakes.end(); ++i)
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registry->entries.emplace(i.key(), FlakeRef(i->value("uri", "")));
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return registry;
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}
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/* Write a registry to a file. */
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void writeRegistry(const FlakeRegistry & registry, const Path & path)
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{
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nlohmann::json json;
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json["version"] = 1;
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for (auto elem : registry.entries)
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json["flakes"][elem.first.to_string()] = { {"uri", elem.second.to_string()} };
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createDirs(dirOf(path));
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writeFile(path, json.dump(4)); // The '4' is the number of spaces used in the indentation in the json file.
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}
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LockFile::FlakeEntry readFlakeEntry(nlohmann::json json)
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{
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FlakeRef flakeRef(json["uri"]);
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if (!flakeRef.isImmutable())
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throw Error("cannot use mutable flake '%s' in pure mode", flakeRef);
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LockFile::FlakeEntry entry(flakeRef, Hash((std::string) json["contentHash"]));
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auto nonFlakeRequires = json["nonFlakeRequires"];
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for (auto i = nonFlakeRequires.begin(); i != nonFlakeRequires.end(); ++i) {
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FlakeRef flakeRef(i->value("uri", ""));
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if (!flakeRef.isImmutable())
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throw Error("requested to fetch FlakeRef '%s' purely, which is mutable", flakeRef);
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LockFile::NonFlakeEntry nonEntry(flakeRef, Hash(i->value("contentHash", "")));
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entry.nonFlakeEntries.insert_or_assign(i.key(), nonEntry);
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}
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auto requires = json["requires"];
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for (auto i = requires.begin(); i != requires.end(); ++i)
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entry.flakeEntries.insert_or_assign(i.key(), readFlakeEntry(*i));
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return entry;
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}
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LockFile readLockFile(const Path & path)
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{
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LockFile lockFile;
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if (!pathExists(path))
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return lockFile;
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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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if (version != 1)
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throw Error("lock file '%s' has unsupported version %d", path, version);
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auto nonFlakeRequires = json["nonFlakeRequires"];
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for (auto i = nonFlakeRequires.begin(); i != nonFlakeRequires.end(); ++i) {
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FlakeRef flakeRef(i->value("uri", ""));
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LockFile::NonFlakeEntry nonEntry(flakeRef, Hash(i->value("contentHash", "")));
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if (!flakeRef.isImmutable())
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throw Error("found mutable FlakeRef '%s' in lockfile at path %s", flakeRef, path);
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lockFile.nonFlakeEntries.insert_or_assign(i.key(), nonEntry);
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}
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auto requires = json["requires"];
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for (auto i = requires.begin(); i != requires.end(); ++i)
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lockFile.flakeEntries.insert_or_assign(i.key(), readFlakeEntry(*i));
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return lockFile;
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}
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nlohmann::json flakeEntryToJson(const LockFile::FlakeEntry & entry)
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{
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nlohmann::json json;
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json["uri"] = entry.ref.to_string();
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json["contentHash"] = entry.contentHash.to_string(SRI);
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for (auto & x : entry.nonFlakeEntries) {
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json["nonFlakeRequires"][x.first]["uri"] = x.second.ref.to_string();
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json["nonFlakeRequires"][x.first]["contentHash"] = x.second.contentHash.to_string(SRI);
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}
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for (auto & x : entry.flakeEntries)
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json["requires"][x.first.to_string()] = flakeEntryToJson(x.second);
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return json;
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}
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void writeLockFile(const LockFile & lockFile, const Path & path)
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{
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nlohmann::json json;
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json["version"] = 1;
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json["nonFlakeRequires"] = nlohmann::json::object();
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for (auto & x : lockFile.nonFlakeEntries) {
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json["nonFlakeRequires"][x.first]["uri"] = x.second.ref.to_string();
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json["nonFlakeRequires"][x.first]["contentHash"] = x.second.contentHash.to_string(SRI);
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}
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json["requires"] = nlohmann::json::object();
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for (auto & x : lockFile.flakeEntries)
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json["requires"][x.first.to_string()] = flakeEntryToJson(x.second);
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createDirs(dirOf(path));
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writeFile(path, json.dump(4) + "\n"); // '4' = indentation in json file
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}
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std::shared_ptr<FlakeRegistry> EvalState::getGlobalFlakeRegistry()
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{
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std::call_once(_globalFlakeRegistryInit, [&]() {
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auto path = evalSettings.flakeRegistry;
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if (!hasPrefix(path, "/")) {
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CachedDownloadRequest request(evalSettings.flakeRegistry);
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request.name = "flake-registry.json";
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request.gcRoot = true;
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path = getDownloader()->downloadCached(store, request).path;
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}
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_globalFlakeRegistry = readRegistry(path);
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});
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return _globalFlakeRegistry;
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}
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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> getUserRegistry()
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{
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return readRegistry(getUserRegistryPath());
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}
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std::shared_ptr<FlakeRegistry> getFlagRegistry(RegistryOverrides registryOverrides)
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{
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auto flagRegistry = std::make_shared<FlakeRegistry>();
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for (auto const & x : registryOverrides) {
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flagRegistry->entries.insert_or_assign(FlakeRef(x.first), FlakeRef(x.second));
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}
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return flagRegistry;
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}
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// This always returns a vector with flakeReg, userReg, globalReg.
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// If one of them doesn't exist, the registry is left empty but does exist.
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const Registries EvalState::getFlakeRegistries()
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{
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Registries registries;
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registries.push_back(getFlagRegistry(registryOverrides));
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registries.push_back(getUserRegistry());
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registries.push_back(getGlobalFlakeRegistry());
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return registries;
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}
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static FlakeRef lookupFlake(EvalState & state, const FlakeRef & flakeRef, const Registries & registries,
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std::vector<FlakeRef> pastSearches = {});
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FlakeRef updateFlakeRef(EvalState & state, const FlakeRef & newRef, const Registries & registries, std::vector<FlakeRef> pastSearches)
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{
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std::string errorMsg = "found cycle in flake registries: ";
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for (FlakeRef oldRef : pastSearches) {
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errorMsg += oldRef.to_string();
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if (oldRef == newRef)
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throw Error(errorMsg);
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errorMsg += " - ";
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}
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pastSearches.push_back(newRef);
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return lookupFlake(state, newRef, registries, pastSearches);
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}
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static FlakeRef lookupFlake(EvalState & state, const FlakeRef & flakeRef, const Registries & registries,
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std::vector<FlakeRef> pastSearches)
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{
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if (registries.empty() && !flakeRef.isDirect())
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throw Error("indirect flake reference '%s' is not allowed", flakeRef);
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for (std::shared_ptr<FlakeRegistry> registry : registries) {
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auto i = registry->entries.find(flakeRef);
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if (i != registry->entries.end()) {
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auto newRef = i->second;
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return updateFlakeRef(state, newRef, registries, pastSearches);
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}
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auto j = registry->entries.find(flakeRef.baseRef());
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if (j != registry->entries.end()) {
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auto newRef = j->second;
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newRef.ref = flakeRef.ref;
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newRef.rev = flakeRef.rev;
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return updateFlakeRef(state, newRef, registries, pastSearches);
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}
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}
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if (!flakeRef.isDirect())
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throw Error("could not resolve flake reference '%s'", flakeRef);
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return flakeRef;
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}
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// Lookups happen here too
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static SourceInfo fetchFlake(EvalState & state, const FlakeRef & flakeRef, bool impureIsAllowed = false)
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{
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FlakeRef resolvedRef = lookupFlake(state, flakeRef,
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impureIsAllowed ? state.getFlakeRegistries() : std::vector<std::shared_ptr<FlakeRegistry>>());
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if (evalSettings.pureEval && !impureIsAllowed && !resolvedRef.isImmutable())
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throw Error("requested to fetch mutable flake '%s' in pure mode", resolvedRef);
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// This only downloads only one revision of the repo, not the entire history.
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if (auto refData = std::get_if<FlakeRef::IsGitHub>(&resolvedRef.data)) {
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// FIXME: use regular /archive URLs instead? api.github.com
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// might have stricter rate limits.
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auto url = fmt("https://api.github.com/repos/%s/%s/tarball/%s",
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refData->owner, refData->repo,
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resolvedRef.rev ? resolvedRef.rev->to_string(Base16, false)
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: resolvedRef.ref ? *resolvedRef.ref : "master");
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std::string accessToken = settings.githubAccessToken.get();
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if (accessToken != "")
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url += "?access_token=" + accessToken;
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CachedDownloadRequest request(url);
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request.unpack = true;
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request.name = "source";
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request.ttl = resolvedRef.rev ? 1000000000 : settings.tarballTtl;
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auto result = getDownloader()->downloadCached(state.store, request);
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if (!result.etag)
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throw Error("did not receive an ETag header from '%s'", url);
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if (result.etag->size() != 42 || (*result.etag)[0] != '"' || (*result.etag)[41] != '"')
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throw Error("ETag header '%s' from '%s' is not a Git revision", *result.etag, url);
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FlakeRef ref(resolvedRef.baseRef());
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ref.rev = Hash(std::string(*result.etag, 1, result.etag->size() - 2), htSHA1);
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SourceInfo info(ref);
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info.storePath = result.storePath;
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return info;
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}
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// This downloads the entire git history
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else if (auto refData = std::get_if<FlakeRef::IsGit>(&resolvedRef.data)) {
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auto gitInfo = exportGit(state.store, refData->uri, resolvedRef.ref, resolvedRef.rev, "source");
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FlakeRef ref(resolvedRef.baseRef());
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ref.ref = gitInfo.ref;
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ref.rev = gitInfo.rev;
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SourceInfo info(ref);
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info.storePath = gitInfo.storePath;
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info.revCount = gitInfo.revCount;
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return info;
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}
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else if (auto refData = std::get_if<FlakeRef::IsPath>(&resolvedRef.data)) {
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if (!pathExists(refData->path + "/.git"))
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throw Error("flake '%s' does not reference a Git repository", refData->path);
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auto gitInfo = exportGit(state.store, refData->path, {}, {}, "source");
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FlakeRef ref(resolvedRef.baseRef());
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ref.ref = gitInfo.ref;
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ref.rev = gitInfo.rev;
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SourceInfo info(ref);
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info.storePath = gitInfo.storePath;
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info.revCount = gitInfo.revCount;
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return info;
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}
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else abort();
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}
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// This will return the flake which corresponds to a given FlakeRef. The lookupFlake is done within `fetchFlake`, which is used here.
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Flake getFlake(EvalState & state, const FlakeRef & flakeRef, bool impureIsAllowed = false)
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{
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SourceInfo sourceInfo = fetchFlake(state, flakeRef, impureIsAllowed);
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debug("got flake source '%s' with flakeref %s", sourceInfo.storePath, sourceInfo.resolvedRef.to_string());
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FlakeRef resolvedRef = sourceInfo.resolvedRef;
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state.store->assertStorePath(sourceInfo.storePath);
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if (state.allowedPaths)
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state.allowedPaths->insert(state.store->toRealPath(sourceInfo.storePath));
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// Guard against symlink attacks.
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Path flakeFile = canonPath(sourceInfo.storePath + "/" + resolvedRef.subdir + "/flake.nix");
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Path realFlakeFile = state.store->toRealPath(flakeFile);
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if (!isInDir(realFlakeFile, state.store->toRealPath(sourceInfo.storePath)))
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throw Error("'flake.nix' file of flake '%s' escapes from '%s'", resolvedRef, sourceInfo.storePath);
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Flake flake(flakeRef, sourceInfo);
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flake.hash = state.store->queryPathInfo(sourceInfo.storePath)->narHash;
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if (!pathExists(realFlakeFile))
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throw Error("source tree referenced by '%s' does not contain a '%s/flake.nix' file", resolvedRef, resolvedRef.subdir);
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Value vInfo;
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state.evalFile(realFlakeFile, vInfo); // FIXME: symlink attack
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state.forceAttrs(vInfo);
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if (auto epoch = vInfo.attrs->get(state.symbols.create("epoch"))) {
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flake.epoch = state.forceInt(*(**epoch).value, *(**epoch).pos);
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if (flake.epoch > 2019)
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throw Error("flake '%s' requires unsupported epoch %d; please upgrade Nix", flakeRef, flake.epoch);
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} else
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throw Error("flake '%s' lacks attribute 'epoch'", flakeRef);
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if (auto name = vInfo.attrs->get(state.sName))
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flake.id = state.forceStringNoCtx(*(**name).value, *(**name).pos);
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else
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throw Error("flake '%s' lacks attribute 'name'", flakeRef);
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if (auto description = vInfo.attrs->get(state.sDescription))
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flake.description = state.forceStringNoCtx(*(**description).value, *(**description).pos);
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if (auto requires = vInfo.attrs->get(state.symbols.create("requires"))) {
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state.forceList(*(**requires).value, *(**requires).pos);
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for (unsigned int n = 0; n < (**requires).value->listSize(); ++n)
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flake.requires.push_back(FlakeRef(state.forceStringNoCtx(
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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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} else
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throw Error("flake '%s' lacks attribute 'provides'", flakeRef);
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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, FlakeAlias alias, bool impureIsAllowed = false)
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{
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SourceInfo sourceInfo = fetchFlake(state, flakeRef, impureIsAllowed);
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debug("got non-flake source '%s' with flakeref %s", sourceInfo.storePath, sourceInfo.resolvedRef.to_string());
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FlakeRef resolvedRef = sourceInfo.resolvedRef;
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NonFlake nonFlake(flakeRef, sourceInfo);
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state.store->assertStorePath(nonFlake.storePath);
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if (state.allowedPaths)
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state.allowedPaths->insert(nonFlake.storePath);
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nonFlake.hash = state.store->queryPathInfo(sourceInfo.storePath)->narHash;
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nonFlake.alias = alias;
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return nonFlake;
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}
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LockFile entryToLockFile(const LockFile::FlakeEntry & entry)
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{
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LockFile lockFile;
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lockFile.flakeEntries = entry.flakeEntries;
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lockFile.nonFlakeEntries = entry.nonFlakeEntries;
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return lockFile;
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}
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LockFile::FlakeEntry dependenciesToFlakeEntry(const ResolvedFlake & resolvedFlake)
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{
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LockFile::FlakeEntry entry(resolvedFlake.flake.resolvedRef, resolvedFlake.flake.hash);
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for (auto & info : resolvedFlake.flakeDeps)
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entry.flakeEntries.insert_or_assign(info.first.to_string(), dependenciesToFlakeEntry(info.second));
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for (auto & nonFlake : resolvedFlake.nonFlakeDeps) {
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LockFile::NonFlakeEntry nonEntry(nonFlake.resolvedRef, nonFlake.hash);
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entry.nonFlakeEntries.insert_or_assign(nonFlake.alias, nonEntry);
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}
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return entry;
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}
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bool allowedToWrite(HandleLockFile handle)
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{
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return handle == UpdateLockFile || handle == RecreateLockFile;
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}
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bool recreateLockFile(HandleLockFile handle)
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{
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return handle == RecreateLockFile || handle == UseNewLockFile;
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}
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bool allowedToUseRegistries(HandleLockFile handle, bool isTopRef)
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{
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if (handle == AllPure) return false;
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else if (handle == TopRefUsesRegistries) return isTopRef;
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else if (handle == UpdateLockFile) return true;
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else if (handle == UseUpdatedLockFile) return true;
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else if (handle == RecreateLockFile) return true;
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else if (handle == UseNewLockFile) return true;
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else assert(false);
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}
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ResolvedFlake resolveFlakeFromLockFile(EvalState & state, const FlakeRef & flakeRef,
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HandleLockFile handleLockFile, LockFile lockFile = {}, bool topRef = false)
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{
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Flake flake = getFlake(state, flakeRef, allowedToUseRegistries(handleLockFile, topRef));
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ResolvedFlake deps(flake);
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for (auto & nonFlakeInfo : flake.nonFlakeRequires) {
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FlakeRef ref = nonFlakeInfo.second;
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auto i = lockFile.nonFlakeEntries.find(nonFlakeInfo.first);
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if (i != lockFile.nonFlakeEntries.end()) {
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NonFlake nonFlake = getNonFlake(state, i->second.ref, nonFlakeInfo.first);
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if (nonFlake.hash != i->second.contentHash)
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throw Error("the content hash of flakeref '%s' doesn't match", i->second.ref.to_string());
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deps.nonFlakeDeps.push_back(nonFlake);
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} else {
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if (handleLockFile == AllPure || handleLockFile == TopRefUsesRegistries)
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throw Error("cannot update non-flake dependency '%s' in pure mode", nonFlakeInfo.first);
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deps.nonFlakeDeps.push_back(getNonFlake(state, nonFlakeInfo.second, nonFlakeInfo.first, allowedToUseRegistries(handleLockFile, false)));
|
|
}
|
|
}
|
|
|
|
for (auto newFlakeRef : flake.requires) {
|
|
auto i = lockFile.flakeEntries.find(newFlakeRef);
|
|
if (i != lockFile.flakeEntries.end()) { // Propagate lockFile downwards if possible
|
|
ResolvedFlake newResFlake = resolveFlakeFromLockFile(state, i->second.ref, handleLockFile, entryToLockFile(i->second));
|
|
if (newResFlake.flake.hash != i->second.contentHash)
|
|
throw Error("the content hash of flakeref '%s' doesn't match", i->second.ref.to_string());
|
|
deps.flakeDeps.insert_or_assign(newFlakeRef, newResFlake);
|
|
} else {
|
|
if (handleLockFile == AllPure || handleLockFile == TopRefUsesRegistries)
|
|
throw Error("cannot update flake dependency '%s' in pure mode", newFlakeRef.to_string());
|
|
deps.flakeDeps.insert_or_assign(newFlakeRef, resolveFlakeFromLockFile(state, newFlakeRef, handleLockFile));
|
|
}
|
|
}
|
|
|
|
return deps;
|
|
}
|
|
|
|
/* Given a flake reference, recursively fetch it and its dependencies.
|
|
FIXME: this should return a graph of flakes.
|
|
*/
|
|
ResolvedFlake resolveFlake(EvalState & state, const FlakeRef & topRef, HandleLockFile handleLockFile)
|
|
{
|
|
Flake flake = getFlake(state, topRef, allowedToUseRegistries(handleLockFile, true));
|
|
LockFile oldLockFile;
|
|
|
|
if (!recreateLockFile (handleLockFile)) {
|
|
// If recreateLockFile, start with an empty lockfile
|
|
oldLockFile = readLockFile(flake.storePath + "/flake.lock"); // FIXME: symlink attack
|
|
}
|
|
|
|
LockFile lockFile(oldLockFile);
|
|
|
|
ResolvedFlake resFlake = resolveFlakeFromLockFile(state, topRef, handleLockFile, lockFile, true);
|
|
lockFile = entryToLockFile(dependenciesToFlakeEntry(resFlake));
|
|
|
|
if (!(lockFile == oldLockFile)) {
|
|
if (allowedToWrite(handleLockFile)) {
|
|
if (auto refData = std::get_if<FlakeRef::IsPath>(&topRef.data)) {
|
|
writeLockFile(lockFile, refData->path + (topRef.subdir == "" ? "" : "/" + topRef.subdir) + "/flake.lock");
|
|
|
|
// Hack: Make sure that flake.lock is visible to Git, so it ends up in the Nix store.
|
|
runProgram("git", true, { "-C", refData->path, "add",
|
|
(topRef.subdir == "" ? "" : topRef.subdir + "/") + "flake.lock" });
|
|
} else
|
|
warn("cannot write lockfile of remote flake '%s'", topRef);
|
|
} else if (handleLockFile != AllPure && handleLockFile != TopRefUsesRegistries)
|
|
warn("using updated lockfile without writing it to file");
|
|
}
|
|
|
|
return resFlake;
|
|
}
|
|
|
|
void updateLockFile(EvalState & state, const FlakeRef & flakeRef, bool recreateLockFile)
|
|
{
|
|
resolveFlake(state, flakeRef, recreateLockFile ? RecreateLockFile : UpdateLockFile);
|
|
}
|
|
|
|
void callFlake(EvalState & state, const ResolvedFlake & resFlake, Value & v)
|
|
{
|
|
// Construct the resulting attrset '{description, provides,
|
|
// ...}'. This attrset is passed lazily as an argument to 'provides'.
|
|
|
|
state.mkAttrs(v, resFlake.flakeDeps.size() + resFlake.nonFlakeDeps.size() + 8);
|
|
|
|
for (auto info : resFlake.flakeDeps) {
|
|
const ResolvedFlake newResFlake = info.second;
|
|
auto vFlake = state.allocAttr(v, newResFlake.flake.id);
|
|
callFlake(state, newResFlake, *vFlake);
|
|
}
|
|
|
|
for (const NonFlake nonFlake : resFlake.nonFlakeDeps) {
|
|
auto vNonFlake = state.allocAttr(v, nonFlake.alias);
|
|
state.mkAttrs(*vNonFlake, 4);
|
|
|
|
state.store->isValidPath(nonFlake.storePath);
|
|
mkString(*state.allocAttr(*vNonFlake, state.sOutPath), nonFlake.storePath, {nonFlake.storePath});
|
|
|
|
// FIXME: add rev, shortRev, revCount, ...
|
|
}
|
|
|
|
mkString(*state.allocAttr(v, state.sDescription), resFlake.flake.description);
|
|
|
|
auto & path = resFlake.flake.storePath;
|
|
state.store->isValidPath(path);
|
|
mkString(*state.allocAttr(v, state.sOutPath), path, {path});
|
|
|
|
if (resFlake.flake.resolvedRef.rev) {
|
|
mkString(*state.allocAttr(v, state.symbols.create("rev")),
|
|
resFlake.flake.resolvedRef.rev->gitRev());
|
|
mkString(*state.allocAttr(v, state.symbols.create("shortRev")),
|
|
resFlake.flake.resolvedRef.rev->gitShortRev());
|
|
}
|
|
|
|
if (resFlake.flake.revCount)
|
|
mkInt(*state.allocAttr(v, state.symbols.create("revCount")), *resFlake.flake.revCount);
|
|
|
|
auto vProvides = state.allocAttr(v, state.symbols.create("provides"));
|
|
mkApp(*vProvides, *resFlake.flake.vProvides, v);
|
|
|
|
v.attrs->push_back(Attr(state.symbols.create("self"), &v));
|
|
|
|
v.attrs->sort();
|
|
}
|
|
|
|
// Return the `provides` of the top flake, while assigning to `v` the provides
|
|
// of the dependencies as well.
|
|
void makeFlakeValue(EvalState & state, const FlakeRef & flakeRef, HandleLockFile handle, Value & v)
|
|
{
|
|
callFlake(state, resolveFlake(state, flakeRef, handle), v);
|
|
}
|
|
|
|
// This function is exposed to be used in nix files.
|
|
static void prim_getFlake(EvalState & state, const Pos & pos, Value * * args, Value & v)
|
|
{
|
|
makeFlakeValue(state, state.forceStringNoCtx(*args[0], pos),
|
|
evalSettings.pureEval ? AllPure : UseUpdatedLockFile, v);
|
|
}
|
|
|
|
static RegisterPrimOp r2("getFlake", 1, prim_getFlake);
|
|
|
|
void gitCloneFlake(FlakeRef flakeRef, EvalState & state, Registries registries, const Path & destDir)
|
|
{
|
|
flakeRef = lookupFlake(state, flakeRef, registries);
|
|
|
|
std::string uri;
|
|
|
|
Strings args = {"clone"};
|
|
|
|
if (auto refData = std::get_if<FlakeRef::IsGitHub>(&flakeRef.data)) {
|
|
uri = "git@github.com:" + refData->owner + "/" + refData->repo + ".git";
|
|
args.push_back(uri);
|
|
if (flakeRef.ref) {
|
|
args.push_back("--branch");
|
|
args.push_back(*flakeRef.ref);
|
|
}
|
|
} else if (auto refData = std::get_if<FlakeRef::IsGit>(&flakeRef.data)) {
|
|
args.push_back(refData->uri);
|
|
if (flakeRef.ref) {
|
|
args.push_back("--branch");
|
|
args.push_back(*flakeRef.ref);
|
|
}
|
|
}
|
|
|
|
if (destDir != "")
|
|
args.push_back(destDir);
|
|
|
|
runProgram("git", true, args);
|
|
}
|
|
|
|
}
|