Add start of 'nix profile' command
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91a88f3acb
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ce27920936
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@ -123,4 +123,9 @@ void MixProfile::updateProfile(const Buildables & buildables)
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updateProfile(*result);
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}
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MixDefaultProfile::MixDefaultProfile()
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{
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profile = getDefaultProfile();
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}
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}
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@ -188,4 +188,9 @@ struct MixProfile : virtual Args, virtual StoreCommand
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void updateProfile(const Buildables & buildables);
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};
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struct MixDefaultProfile : MixProfile
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{
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MixDefaultProfile();
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};
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}
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@ -653,6 +653,7 @@ struct CmdFlake : virtual MultiCommand, virtual Command
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{
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if (!command)
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throw UsageError("'nix flake' requires a sub-command.");
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command->prepare();
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command->run();
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}
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@ -294,7 +294,7 @@ Value * InstallableFlake::getFlakeOutputs(EvalState & state, const flake::Resolv
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return (*aOutputs)->value;
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}
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std::vector<flake::EvalCache::Derivation> InstallableFlake::toDerivations()
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std::tuple<std::string, FlakeRef, flake::EvalCache::Derivation> InstallableFlake::toDerivation()
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{
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auto state = cmd.getEvalState();
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@ -312,7 +312,7 @@ std::vector<flake::EvalCache::Derivation> InstallableFlake::toDerivations()
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auto drv = evalCache.getDerivation(fingerprint, attrPath);
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if (drv) {
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if (state->store->isValidPath(drv->drvPath))
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return {*drv};
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return {attrPath, resFlake.flake.sourceInfo.resolvedRef, *drv};
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}
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if (!vOutputs)
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@ -334,7 +334,7 @@ std::vector<flake::EvalCache::Derivation> InstallableFlake::toDerivations()
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evalCache.addDerivation(fingerprint, attrPath, drv);
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return {drv};
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return {attrPath, resFlake.flake.sourceInfo.resolvedRef, drv};
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} catch (AttrPathNotFound & e) {
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}
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}
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@ -343,6 +343,11 @@ std::vector<flake::EvalCache::Derivation> InstallableFlake::toDerivations()
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flakeRef, concatStringsSep(", ", quoteStrings(attrPaths)));
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}
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std::vector<flake::EvalCache::Derivation> InstallableFlake::toDerivations()
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{
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return {std::get<2>(toDerivation())};
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}
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Value * InstallableFlake::toValue(EvalState & state)
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{
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auto resFlake = resolveFlake(state, flakeRef, cmd.getLockFileMode());
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@ -8,6 +8,7 @@
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namespace nix {
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struct Value;
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struct DrvInfo;
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class EvalState;
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class SourceExprCommand;
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@ -89,6 +90,8 @@ struct InstallableFlake : InstallableValue
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Value * getFlakeOutputs(EvalState & state, const flake::ResolvedFlake & resFlake);
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std::tuple<std::string, FlakeRef, flake::EvalCache::Derivation> toDerivation();
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std::vector<flake::EvalCache::Derivation> toDerivations() override;
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Value * toValue(EvalState & state) override;
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234
src/nix/profile.cc
Normal file
234
src/nix/profile.cc
Normal file
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@ -0,0 +1,234 @@
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#include "command.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 <nlohmann/json.hpp>
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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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FlakeRef resolvedRef;
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std::string attrPath;
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// FIXME: output names
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};
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struct ProfileElement
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{
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PathSet storePaths;
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std::optional<ProfileElementSource> source;
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bool active = true;
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// FIXME: priority
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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(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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if (version != 1)
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throw Error("profile manifest '%s' has unsupported version %d", manifestPath, version);
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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((std::string) p);
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element.active = e["active"];
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if (e.value("uri", "") != "") {
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element.source = ProfileElementSource{
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FlakeRef(e["originalUri"]),
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FlakeRef(e["uri"]),
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e["attrPath"]
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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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}
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std::string toJSON() 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(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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if (element.source) {
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obj["originalUri"] = element.source->originalRef.to_string();
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obj["uri"] = element.source->resolvedRef.to_string();
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obj["attrPath"] = element.source->attrPath;
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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"] = 1;
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json["elements"] = array;
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return json.dump();
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}
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Path build(ref<Store> store)
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{
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auto tempDir = createTempDir();
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ValidPathInfo info;
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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(path, true, 5);
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info.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());
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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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info.narHash = hashString(htSHA256, *sink.s);
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info.narSize = sink.s->size();
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info.path = store->makeFixedOutputPath(true, info.narHash, "profile", info.references);
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info.ca = makeFixedOutputCA(true, info.narHash);
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store->addToStore(info, sink.s);
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return info.path;
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}
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};
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struct CmdProfileInstall : InstallablesCommand, MixDefaultProfile
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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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Examples examples() override
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{
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return {
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Example{
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"To install a package from Nixpkgs:",
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"nix profile install nixpkgs#hello"
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},
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Example{
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"To install a package from a specific branch of Nixpkgs:",
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"nix profile install nixpkgs/release-19.09#hello"
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},
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Example{
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"To install a package from a specific revision of Nixpkgs:",
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"nix profile install nixpkgs/1028bb33859f8dfad7f98e1c8d185f3d1aaa7340#hello"
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},
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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(*profile);
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PathSet pathsToBuild;
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for (auto & installable : installables) {
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if (auto installable2 = std::dynamic_pointer_cast<InstallableFlake>(installable)) {
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auto [attrPath, resolvedRef, drv] = installable2->toDerivation();
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ProfileElement element;
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element.storePaths = {drv.outPath}; // FIXME
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element.source = ProfileElementSource{
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installable2->flakeRef,
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resolvedRef,
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attrPath,
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};
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pathsToBuild.insert(makeDrvPathWithOutputs(drv.drvPath, {"out"})); // FIXME
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manifest.elements.emplace_back(std::move(element));
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} else
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throw Error("'nix profile install' does not support argument '%s'", installable->what());
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}
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store->buildPaths(pathsToBuild);
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updateProfile(manifest.build(store));
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}
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};
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struct CmdProfileInfo : virtual StoreCommand, MixDefaultProfile
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{
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std::string description() override
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{
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return "info";
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}
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Examples examples() override
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{
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return {
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Example{
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"To show what packages are installed in the default profile:",
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"nix profile info"
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},
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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(*profile);
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for (auto & element : manifest.elements) {
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std::cout << fmt("%s %s\n",
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element.source ? element.source->originalRef.to_string() + "#" + element.source->attrPath : "-",
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element.source ? element.source->resolvedRef.to_string() + "#" + element.source->attrPath : "-",
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concatStringsSep(" ", element.storePaths));
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}
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}
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};
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struct CmdProfile : virtual MultiCommand, virtual Command
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{
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CmdProfile()
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: MultiCommand({
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{"install", []() { return make_ref<CmdProfileInstall>(); }},
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{"info", []() { return make_ref<CmdProfileInfo>(); }},
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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 "manage Nix profiles";
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}
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void run() override
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{
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if (!command)
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throw UsageError("'nix profile' requires a sub-command.");
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command->prepare();
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command->run();
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}
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void printHelp(const string & programName, std::ostream & out) override
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{
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MultiCommand::printHelp(programName, out);
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}
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};
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static auto r1 = registerCommand<CmdProfile>("profile");
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