mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-11 08:46:16 +02:00
806 lines
26 KiB
C++
806 lines
26 KiB
C++
#include "command.hh"
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#include "installable-flake.hh"
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#include "common-args.hh"
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#include "shared.hh"
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#include "store-api.hh"
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#include "derivations.hh"
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#include "archive.hh"
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#include "builtins/buildenv.hh"
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#include "flake/flakeref.hh"
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#include "../nix-env/user-env.hh"
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#include "profiles.hh"
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#include "names.hh"
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#include <nlohmann/json.hpp>
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#include <regex>
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#include <iomanip>
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using namespace nix;
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struct ProfileElementSource
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{
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FlakeRef originalRef;
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// FIXME: record original attrpath.
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FlakeRef resolvedRef;
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std::string attrPath;
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ExtendedOutputsSpec outputs;
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bool operator < (const ProfileElementSource & other) const
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{
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return
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std::tuple(originalRef.to_string(), attrPath, outputs) <
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std::tuple(other.originalRef.to_string(), other.attrPath, other.outputs);
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}
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};
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const int defaultPriority = 5;
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struct ProfileElement
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{
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StorePathSet storePaths;
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std::optional<ProfileElementSource> source;
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bool active = true;
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int priority = defaultPriority;
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std::string describe() const
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{
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if (source)
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return fmt("%s#%s%s", source->originalRef, source->attrPath, source->outputs.to_string());
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StringSet names;
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for (auto & path : storePaths)
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names.insert(DrvName(path.name()).name);
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return concatStringsSep(", ", names);
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}
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std::string versions() const
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{
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StringSet versions;
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for (auto & path : storePaths)
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versions.insert(DrvName(path.name()).version);
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return showVersions(versions);
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}
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bool operator < (const ProfileElement & other) const
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{
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return std::tuple(describe(), storePaths) < std::tuple(other.describe(), other.storePaths);
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}
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void updateStorePaths(
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ref<Store> evalStore,
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ref<Store> store,
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const BuiltPaths & builtPaths)
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{
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storePaths.clear();
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for (auto & buildable : builtPaths) {
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std::visit(overloaded {
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[&](const BuiltPath::Opaque & bo) {
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storePaths.insert(bo.path);
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},
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[&](const BuiltPath::Built & bfd) {
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for (auto & output : bfd.outputs)
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storePaths.insert(output.second);
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},
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}, buildable.raw());
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}
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}
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};
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struct ProfileManifest
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{
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std::vector<ProfileElement> elements;
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ProfileManifest() { }
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ProfileManifest(EvalState & state, const Path & profile)
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{
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auto manifestPath = profile + "/manifest.json";
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if (pathExists(manifestPath)) {
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auto json = nlohmann::json::parse(readFile(manifestPath));
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auto version = json.value("version", 0);
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std::string sUrl;
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std::string sOriginalUrl;
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switch (version) {
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case 1:
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sUrl = "uri";
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sOriginalUrl = "originalUri";
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break;
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case 2:
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sUrl = "url";
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sOriginalUrl = "originalUrl";
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break;
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default:
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throw Error("profile manifest '%s' has unsupported version %d", manifestPath, version);
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}
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for (auto & e : json["elements"]) {
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ProfileElement element;
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for (auto & p : e["storePaths"])
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element.storePaths.insert(state.store->parseStorePath((std::string) p));
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element.active = e["active"];
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if(e.contains("priority")) {
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element.priority = e["priority"];
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}
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if (e.value(sUrl, "") != "") {
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element.source = ProfileElementSource {
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parseFlakeRef(e[sOriginalUrl]),
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parseFlakeRef(e[sUrl]),
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e["attrPath"],
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e["outputs"].get<ExtendedOutputsSpec>()
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};
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}
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elements.emplace_back(std::move(element));
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}
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}
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else if (pathExists(profile + "/manifest.nix")) {
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// FIXME: needed because of pure mode; ugly.
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state.allowPath(state.store->followLinksToStore(profile));
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state.allowPath(state.store->followLinksToStore(profile + "/manifest.nix"));
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auto drvInfos = queryInstalled(state, state.store->followLinksToStore(profile));
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for (auto & drvInfo : drvInfos) {
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ProfileElement element;
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element.storePaths = {drvInfo.queryOutPath()};
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elements.emplace_back(std::move(element));
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}
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}
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}
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std::string toJSON(Store & store) const
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{
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auto array = nlohmann::json::array();
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for (auto & element : elements) {
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auto paths = nlohmann::json::array();
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for (auto & path : element.storePaths)
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paths.push_back(store.printStorePath(path));
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nlohmann::json obj;
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obj["storePaths"] = paths;
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obj["active"] = element.active;
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obj["priority"] = element.priority;
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if (element.source) {
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obj["originalUrl"] = element.source->originalRef.to_string();
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obj["url"] = element.source->resolvedRef.to_string();
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obj["attrPath"] = element.source->attrPath;
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obj["outputs"] = element.source->outputs;
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}
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array.push_back(obj);
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}
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nlohmann::json json;
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json["version"] = 2;
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json["elements"] = array;
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return json.dump();
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}
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StorePath build(ref<Store> store)
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{
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auto tempDir = createTempDir();
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StorePathSet references;
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Packages pkgs;
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for (auto & element : elements) {
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for (auto & path : element.storePaths) {
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if (element.active)
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pkgs.emplace_back(store->printStorePath(path), true, element.priority);
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references.insert(path);
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}
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}
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buildProfile(tempDir, std::move(pkgs));
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writeFile(tempDir + "/manifest.json", toJSON(*store));
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/* Add the symlink tree to the store. */
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StringSink sink;
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dumpPath(tempDir, sink);
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auto narHash = hashString(htSHA256, sink.s);
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ValidPathInfo info {
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store->makeFixedOutputPath(FileIngestionMethod::Recursive, narHash, "profile", references),
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narHash,
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};
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info.references = std::move(references);
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info.narSize = sink.s.size();
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info.ca = FixedOutputHash { .method = FileIngestionMethod::Recursive, .hash = info.narHash };
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StringSource source(sink.s);
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store->addToStore(info, source);
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return std::move(info.path);
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}
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static void printDiff(const ProfileManifest & prev, const ProfileManifest & cur, std::string_view indent)
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{
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auto prevElems = prev.elements;
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std::sort(prevElems.begin(), prevElems.end());
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auto curElems = cur.elements;
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std::sort(curElems.begin(), curElems.end());
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auto i = prevElems.begin();
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auto j = curElems.begin();
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bool changes = false;
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while (i != prevElems.end() || j != curElems.end()) {
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if (j != curElems.end() && (i == prevElems.end() || i->describe() > j->describe())) {
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std::cout << fmt("%s%s: ∅ -> %s\n", indent, j->describe(), j->versions());
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changes = true;
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++j;
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}
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else if (i != prevElems.end() && (j == curElems.end() || i->describe() < j->describe())) {
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std::cout << fmt("%s%s: %s -> ∅\n", indent, i->describe(), i->versions());
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changes = true;
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++i;
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}
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else {
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auto v1 = i->versions();
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auto v2 = j->versions();
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if (v1 != v2) {
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std::cout << fmt("%s%s: %s -> %s\n", indent, i->describe(), v1, v2);
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changes = true;
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}
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++i;
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++j;
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}
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}
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if (!changes)
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std::cout << fmt("%sNo changes.\n", indent);
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}
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};
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static std::map<Installable *, std::pair<BuiltPaths, ExtraPathInfo>>
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builtPathsPerInstallable(
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const std::vector<std::pair<std::shared_ptr<Installable>, BuiltPathWithResult>> & builtPaths)
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{
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std::map<Installable *, std::pair<BuiltPaths, ExtraPathInfo>> res;
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for (auto & [installable, builtPath] : builtPaths) {
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auto & r = res[installable.get()];
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/* Note that there could be conflicting info
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(e.g. meta.priority fields) if the installable returned
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multiple derivations. So pick one arbitrarily. FIXME:
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print a warning? */
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r.first.push_back(builtPath.path);
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r.second = builtPath.info;
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}
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return res;
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}
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struct CmdProfileInstall : InstallablesCommand, MixDefaultProfile
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{
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std::optional<int64_t> priority;
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CmdProfileInstall() {
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addFlag({
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.longName = "priority",
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.description = "The priority of the package to install.",
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.labels = {"priority"},
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.handler = {&priority},
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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 "install a package into a profile";
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}
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std::string doc() override
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{
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return
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#include "profile-install.md"
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;
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}
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void run(ref<Store> store) override
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{
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ProfileManifest manifest(*getEvalState(), *profile);
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auto builtPaths = builtPathsPerInstallable(
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Installable::build2(
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getEvalStore(), store, Realise::Outputs, installables, bmNormal));
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for (auto & installable : installables) {
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ProfileElement element;
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auto & [res, info] = builtPaths[installable.get()];
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if (info.originalRef && info.resolvedRef && info.attrPath && info.extendedOutputsSpec) {
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element.source = ProfileElementSource {
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.originalRef = *info.originalRef,
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.resolvedRef = *info.resolvedRef,
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.attrPath = *info.attrPath,
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.outputs = *info.extendedOutputsSpec,
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};
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}
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// If --priority was specified we want to override the
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// priority of the installable.
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element.priority =
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priority
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? *priority
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: info.priority.value_or(defaultPriority);
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element.updateStorePaths(getEvalStore(), store, res);
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manifest.elements.push_back(std::move(element));
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}
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try {
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updateProfile(manifest.build(store));
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} catch (BuildEnvFileConflictError & conflictError) {
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// FIXME use C++20 std::ranges once macOS has it
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// See https://github.com/NixOS/nix/compare/3efa476c5439f8f6c1968a6ba20a31d1239c2f04..1fe5d172ece51a619e879c4b86f603d9495cc102
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auto findRefByFilePath = [&]<typename Iterator>(Iterator begin, Iterator end) {
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for (auto it = begin; it != end; it++) {
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auto profileElement = *it;
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for (auto & storePath : profileElement.storePaths) {
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if (conflictError.fileA.starts_with(store->printStorePath(storePath))) {
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return std::pair(conflictError.fileA, profileElement.source->originalRef);
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}
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if (conflictError.fileB.starts_with(store->printStorePath(storePath))) {
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return std::pair(conflictError.fileB, profileElement.source->originalRef);
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}
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}
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}
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throw conflictError;
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};
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// There are 2 conflicting files. We need to find out which one is from the already installed package and
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// which one is the package that is the new package that is being installed.
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// The first matching package is the one that was already installed (original).
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auto [originalConflictingFilePath, originalConflictingRef] = findRefByFilePath(manifest.elements.begin(), manifest.elements.end());
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// The last matching package is the one that was going to be installed (new).
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auto [newConflictingFilePath, newConflictingRef] = findRefByFilePath(manifest.elements.rbegin(), manifest.elements.rend());
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throw Error(
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"An existing package already provides the following file:\n"
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"\n"
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" %1%\n"
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"\n"
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"This is the conflicting file from the new package:\n"
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"\n"
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" %2%\n"
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"\n"
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"To remove the existing package:\n"
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"\n"
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" nix profile remove %3%\n"
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"\n"
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"The new package can also be installed next to the existing one by assigning a different priority.\n"
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"The conflicting packages have a priority of %5%.\n"
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"To prioritise the new package:\n"
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"\n"
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" nix profile install %4% --priority %6%\n"
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"\n"
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"To prioritise the existing package:\n"
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"\n"
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" nix profile install %4% --priority %7%\n",
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originalConflictingFilePath,
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newConflictingFilePath,
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originalConflictingRef.to_string(),
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newConflictingRef.to_string(),
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conflictError.priority,
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conflictError.priority - 1,
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conflictError.priority + 1
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);
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}
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}
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};
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class MixProfileElementMatchers : virtual Args
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{
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std::vector<std::string> _matchers;
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public:
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MixProfileElementMatchers()
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{
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expectArgs("elements", &_matchers);
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}
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struct RegexPattern {
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std::string pattern;
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std::regex reg;
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};
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typedef std::variant<size_t, Path, RegexPattern> Matcher;
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std::vector<Matcher> getMatchers(ref<Store> store)
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{
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std::vector<Matcher> res;
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for (auto & s : _matchers) {
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if (auto n = string2Int<size_t>(s))
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res.push_back(*n);
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else if (store->isStorePath(s))
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res.push_back(s);
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else
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res.push_back(RegexPattern{s,std::regex(s, std::regex::extended | std::regex::icase)});
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}
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return res;
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}
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bool matches(const Store & store, const ProfileElement & element, size_t pos, const std::vector<Matcher> & matchers)
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{
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for (auto & matcher : matchers) {
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if (auto n = std::get_if<size_t>(&matcher)) {
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if (*n == pos) return true;
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} else if (auto path = std::get_if<Path>(&matcher)) {
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if (element.storePaths.count(store.parseStorePath(*path))) return true;
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} else if (auto regex = std::get_if<RegexPattern>(&matcher)) {
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if (element.source
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&& std::regex_match(element.source->attrPath, regex->reg))
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return true;
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}
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}
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return false;
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}
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};
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struct CmdProfileRemove : virtual EvalCommand, MixDefaultProfile, MixProfileElementMatchers
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{
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std::string description() override
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{
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return "remove packages from a profile";
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}
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std::string doc() override
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{
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return
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#include "profile-remove.md"
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;
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}
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void run(ref<Store> store) override
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{
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ProfileManifest oldManifest(*getEvalState(), *profile);
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auto matchers = getMatchers(store);
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ProfileManifest newManifest;
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for (size_t i = 0; i < oldManifest.elements.size(); ++i) {
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auto & element(oldManifest.elements[i]);
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if (!matches(*store, element, i, matchers)) {
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newManifest.elements.push_back(std::move(element));
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} else {
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notice("removing '%s'", element.describe());
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}
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}
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auto removedCount = oldManifest.elements.size() - newManifest.elements.size();
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printInfo("removed %d packages, kept %d packages",
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removedCount,
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newManifest.elements.size());
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if (removedCount == 0) {
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for (auto matcher: matchers) {
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if (const size_t * index = std::get_if<size_t>(&matcher)){
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warn("'%d' is not a valid index", *index);
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} else if (const Path * path = std::get_if<Path>(&matcher)){
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warn("'%s' does not match any paths", *path);
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} else if (const RegexPattern * regex = std::get_if<RegexPattern>(&matcher)){
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warn("'%s' does not match any packages", regex->pattern);
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}
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}
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warn ("Use 'nix profile list' to see the current profile.");
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}
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updateProfile(newManifest.build(store));
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}
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};
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struct CmdProfileUpgrade : virtual SourceExprCommand, MixDefaultProfile, MixProfileElementMatchers
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{
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std::string description() override
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{
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return "upgrade packages using their most recent flake";
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}
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std::string doc() override
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{
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return
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#include "profile-upgrade.md"
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;
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}
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void run(ref<Store> store) override
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{
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ProfileManifest manifest(*getEvalState(), *profile);
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auto matchers = getMatchers(store);
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std::vector<std::shared_ptr<Installable>> installables;
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std::vector<size_t> indices;
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auto upgradedCount = 0;
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for (size_t i = 0; i < manifest.elements.size(); ++i) {
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auto & element(manifest.elements[i]);
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if (element.source
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&& !element.source->originalRef.input.isLocked()
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&& matches(*store, element, i, matchers))
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{
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upgradedCount++;
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Activity act(*logger, lvlChatty, actUnknown,
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fmt("checking '%s' for updates", element.source->attrPath));
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auto installable = std::make_shared<InstallableFlake>(
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this,
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getEvalState(),
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FlakeRef(element.source->originalRef),
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"",
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element.source->outputs,
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Strings{element.source->attrPath},
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Strings{},
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lockFlags);
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|
|
auto derivedPaths = installable->toDerivedPaths();
|
|
if (derivedPaths.empty()) continue;
|
|
auto & info = derivedPaths[0].info;
|
|
|
|
assert(info.resolvedRef && info.attrPath);
|
|
|
|
if (element.source->resolvedRef == info.resolvedRef) continue;
|
|
|
|
printInfo("upgrading '%s' from flake '%s' to '%s'",
|
|
element.source->attrPath, element.source->resolvedRef, *info.resolvedRef);
|
|
|
|
element.source = ProfileElementSource {
|
|
.originalRef = installable->flakeRef,
|
|
.resolvedRef = *info.resolvedRef,
|
|
.attrPath = *info.attrPath,
|
|
.outputs = installable->extendedOutputsSpec,
|
|
};
|
|
|
|
installables.push_back(installable);
|
|
indices.push_back(i);
|
|
}
|
|
}
|
|
|
|
if (upgradedCount == 0) {
|
|
for (auto & matcher : matchers) {
|
|
if (const size_t * index = std::get_if<size_t>(&matcher)){
|
|
warn("'%d' is not a valid index", *index);
|
|
} else if (const Path * path = std::get_if<Path>(&matcher)){
|
|
warn("'%s' does not match any paths", *path);
|
|
} else if (const RegexPattern * regex = std::get_if<RegexPattern>(&matcher)){
|
|
warn("'%s' does not match any packages", regex->pattern);
|
|
}
|
|
}
|
|
warn ("Use 'nix profile list' to see the current profile.");
|
|
}
|
|
|
|
auto builtPaths = builtPathsPerInstallable(
|
|
Installable::build2(
|
|
getEvalStore(), store, Realise::Outputs, installables, bmNormal));
|
|
|
|
for (size_t i = 0; i < installables.size(); ++i) {
|
|
auto & installable = installables.at(i);
|
|
auto & element = manifest.elements[indices.at(i)];
|
|
element.updateStorePaths(getEvalStore(), store, builtPaths[installable.get()].first);
|
|
}
|
|
|
|
updateProfile(manifest.build(store));
|
|
}
|
|
};
|
|
|
|
struct CmdProfileList : virtual EvalCommand, virtual StoreCommand, MixDefaultProfile
|
|
{
|
|
std::string description() override
|
|
{
|
|
return "list installed packages";
|
|
}
|
|
|
|
std::string doc() override
|
|
{
|
|
return
|
|
#include "profile-list.md"
|
|
;
|
|
}
|
|
|
|
void run(ref<Store> store) override
|
|
{
|
|
ProfileManifest manifest(*getEvalState(), *profile);
|
|
|
|
for (size_t i = 0; i < manifest.elements.size(); ++i) {
|
|
auto & element(manifest.elements[i]);
|
|
logger->cout("%d %s %s %s", i,
|
|
element.source ? element.source->originalRef.to_string() + "#" + element.source->attrPath + element.source->outputs.to_string() : "-",
|
|
element.source ? element.source->resolvedRef.to_string() + "#" + element.source->attrPath + element.source->outputs.to_string() : "-",
|
|
concatStringsSep(" ", store->printStorePathSet(element.storePaths)));
|
|
}
|
|
}
|
|
};
|
|
|
|
struct CmdProfileDiffClosures : virtual StoreCommand, MixDefaultProfile
|
|
{
|
|
std::string description() override
|
|
{
|
|
return "show the closure difference between each version of a profile";
|
|
}
|
|
|
|
std::string doc() override
|
|
{
|
|
return
|
|
#include "profile-diff-closures.md"
|
|
;
|
|
}
|
|
|
|
void run(ref<Store> store) override
|
|
{
|
|
auto [gens, curGen] = findGenerations(*profile);
|
|
|
|
std::optional<Generation> prevGen;
|
|
bool first = true;
|
|
|
|
for (auto & gen : gens) {
|
|
if (prevGen) {
|
|
if (!first) std::cout << "\n";
|
|
first = false;
|
|
std::cout << fmt("Version %d -> %d:\n", prevGen->number, gen.number);
|
|
printClosureDiff(store,
|
|
store->followLinksToStorePath(prevGen->path),
|
|
store->followLinksToStorePath(gen.path),
|
|
" ");
|
|
}
|
|
|
|
prevGen = gen;
|
|
}
|
|
}
|
|
};
|
|
|
|
struct CmdProfileHistory : virtual StoreCommand, EvalCommand, MixDefaultProfile
|
|
{
|
|
std::string description() override
|
|
{
|
|
return "show all versions of a profile";
|
|
}
|
|
|
|
std::string doc() override
|
|
{
|
|
return
|
|
#include "profile-history.md"
|
|
;
|
|
}
|
|
|
|
void run(ref<Store> store) override
|
|
{
|
|
auto [gens, curGen] = findGenerations(*profile);
|
|
|
|
std::optional<std::pair<Generation, ProfileManifest>> prevGen;
|
|
bool first = true;
|
|
|
|
for (auto & gen : gens) {
|
|
ProfileManifest manifest(*getEvalState(), gen.path);
|
|
|
|
if (!first) std::cout << "\n";
|
|
first = false;
|
|
|
|
std::cout << fmt("Version %s%d" ANSI_NORMAL " (%s)%s:\n",
|
|
gen.number == curGen ? ANSI_GREEN : ANSI_BOLD,
|
|
gen.number,
|
|
std::put_time(std::gmtime(&gen.creationTime), "%Y-%m-%d"),
|
|
prevGen ? fmt(" <- %d", prevGen->first.number) : "");
|
|
|
|
ProfileManifest::printDiff(
|
|
prevGen ? prevGen->second : ProfileManifest(),
|
|
manifest,
|
|
" ");
|
|
|
|
prevGen = {gen, std::move(manifest)};
|
|
}
|
|
}
|
|
};
|
|
|
|
struct CmdProfileRollback : virtual StoreCommand, MixDefaultProfile, MixDryRun
|
|
{
|
|
std::optional<GenerationNumber> version;
|
|
|
|
CmdProfileRollback()
|
|
{
|
|
addFlag({
|
|
.longName = "to",
|
|
.description = "The profile version to roll back to.",
|
|
.labels = {"version"},
|
|
.handler = {&version},
|
|
});
|
|
}
|
|
|
|
std::string description() override
|
|
{
|
|
return "roll back to the previous version or a specified version of a profile";
|
|
}
|
|
|
|
std::string doc() override
|
|
{
|
|
return
|
|
#include "profile-rollback.md"
|
|
;
|
|
}
|
|
|
|
void run(ref<Store> store) override
|
|
{
|
|
switchGeneration(*profile, version, dryRun);
|
|
}
|
|
};
|
|
|
|
struct CmdProfileWipeHistory : virtual StoreCommand, MixDefaultProfile, MixDryRun
|
|
{
|
|
std::optional<std::string> minAge;
|
|
|
|
CmdProfileWipeHistory()
|
|
{
|
|
addFlag({
|
|
.longName = "older-than",
|
|
.description =
|
|
"Delete versions older than the specified age. *age* "
|
|
"must be in the format *N*`d`, where *N* denotes a number "
|
|
"of days.",
|
|
.labels = {"age"},
|
|
.handler = {&minAge},
|
|
});
|
|
}
|
|
|
|
std::string description() override
|
|
{
|
|
return "delete non-current versions of a profile";
|
|
}
|
|
|
|
std::string doc() override
|
|
{
|
|
return
|
|
#include "profile-wipe-history.md"
|
|
;
|
|
}
|
|
|
|
void run(ref<Store> store) override
|
|
{
|
|
if (minAge)
|
|
deleteGenerationsOlderThan(*profile, *minAge, dryRun);
|
|
else
|
|
deleteOldGenerations(*profile, dryRun);
|
|
}
|
|
};
|
|
|
|
struct CmdProfile : NixMultiCommand
|
|
{
|
|
CmdProfile()
|
|
: MultiCommand({
|
|
{"install", []() { return make_ref<CmdProfileInstall>(); }},
|
|
{"remove", []() { return make_ref<CmdProfileRemove>(); }},
|
|
{"upgrade", []() { return make_ref<CmdProfileUpgrade>(); }},
|
|
{"list", []() { return make_ref<CmdProfileList>(); }},
|
|
{"diff-closures", []() { return make_ref<CmdProfileDiffClosures>(); }},
|
|
{"history", []() { return make_ref<CmdProfileHistory>(); }},
|
|
{"rollback", []() { return make_ref<CmdProfileRollback>(); }},
|
|
{"wipe-history", []() { return make_ref<CmdProfileWipeHistory>(); }},
|
|
})
|
|
{ }
|
|
|
|
std::string description() override
|
|
{
|
|
return "manage Nix profiles";
|
|
}
|
|
|
|
std::string doc() override
|
|
{
|
|
return
|
|
#include "profile.md"
|
|
;
|
|
}
|
|
|
|
void run() override
|
|
{
|
|
if (!command)
|
|
throw UsageError("'nix profile' requires a sub-command.");
|
|
command->second->prepare();
|
|
command->second->run();
|
|
}
|
|
};
|
|
|
|
static auto rCmdProfile = registerCommand<CmdProfile>("profile");
|