diff options
Diffstat (limited to 'third_party/nix/src/nix/upgrade-nix.cc')
| -rw-r--r-- | third_party/nix/src/nix/upgrade-nix.cc | 236 |
1 files changed, 116 insertions, 120 deletions
diff --git a/third_party/nix/src/nix/upgrade-nix.cc b/third_party/nix/src/nix/upgrade-nix.cc index 35c44a70cf..66230a9ddf 100644 --- a/third_party/nix/src/nix/upgrade-nix.cc +++ b/third_party/nix/src/nix/upgrade-nix.cc @@ -1,160 +1,156 @@ +#include "attr-path.hh" #include "command.hh" #include "common-args.hh" -#include "store-api.hh" #include "download.hh" #include "eval.hh" -#include "attr-path.hh" #include "names.hh" #include "progress-bar.hh" +#include "store-api.hh" using namespace nix; -struct CmdUpgradeNix : MixDryRun, StoreCommand -{ - Path profileDir; - std::string storePathsUrl = "https://github.com/NixOS/nixpkgs/raw/master/nixos/modules/installer/tools/nix-fallback-paths.nix"; - - CmdUpgradeNix() +struct CmdUpgradeNix : MixDryRun, StoreCommand { + Path profileDir; + std::string storePathsUrl = + "https://github.com/NixOS/nixpkgs/raw/master/nixos/modules/installer/" + "tools/nix-fallback-paths.nix"; + + CmdUpgradeNix() { + mkFlag() + .longName("profile") + .shortName('p') + .labels({"profile-dir"}) + .description("the Nix profile to upgrade") + .dest(&profileDir); + + mkFlag() + .longName("nix-store-paths-url") + .labels({"url"}) + .description( + "URL of the file that contains the store paths of the latest Nix " + "release") + .dest(&storePathsUrl); + } + + std::string name() override { return "upgrade-nix"; } + + std::string description() override { + return "upgrade Nix to the latest stable version"; + } + + Examples examples() override { + return { + Example{"To upgrade Nix to the latest stable version:", + "nix upgrade-nix"}, + Example{ + "To upgrade Nix in a specific profile:", + "nix upgrade-nix -p /nix/var/nix/profiles/per-user/alice/profile"}, + }; + } + + void run(ref<Store> store) override { + evalSettings.pureEval = true; + + if (profileDir == "") profileDir = getProfileDir(store); + + printInfo("upgrading Nix in profile '%s'", profileDir); + + Path storePath; { - mkFlag() - .longName("profile") - .shortName('p') - .labels({"profile-dir"}) - .description("the Nix profile to upgrade") - .dest(&profileDir); - - mkFlag() - .longName("nix-store-paths-url") - .labels({"url"}) - .description("URL of the file that contains the store paths of the latest Nix release") - .dest(&storePathsUrl); + Activity act(*logger, lvlInfo, actUnknown, "querying latest Nix version"); + storePath = getLatestNix(store); } - std::string name() override - { - return "upgrade-nix"; - } + auto version = DrvName(storePathToName(storePath)).version; - std::string description() override - { - return "upgrade Nix to the latest stable version"; + if (dryRun) { + stopProgressBar(); + printError("would upgrade to version %s", version); + return; } - Examples examples() override { - return { - Example{ - "To upgrade Nix to the latest stable version:", - "nix upgrade-nix" - }, - Example{ - "To upgrade Nix in a specific profile:", - "nix upgrade-nix -p /nix/var/nix/profiles/per-user/alice/profile" - }, - }; + Activity act(*logger, lvlInfo, actUnknown, + fmt("downloading '%s'...", storePath)); + store->ensurePath(storePath); } - void run(ref<Store> store) override { - evalSettings.pureEval = true; - - if (profileDir == "") - profileDir = getProfileDir(store); - - printInfo("upgrading Nix in profile '%s'", profileDir); - - Path storePath; - { - Activity act(*logger, lvlInfo, actUnknown, "querying latest Nix version"); - storePath = getLatestNix(store); - } - - auto version = DrvName(storePathToName(storePath)).version; - - if (dryRun) { - stopProgressBar(); - printError("would upgrade to version %s", version); - return; - } - - { - Activity act(*logger, lvlInfo, actUnknown, fmt("downloading '%s'...", storePath)); - store->ensurePath(storePath); - } - - { - Activity act(*logger, lvlInfo, actUnknown, fmt("verifying that '%s' works...", storePath)); - auto program = storePath + "/bin/nix-env"; - auto s = runProgram(program, false, {"--version"}); - if (s.find("Nix") == std::string::npos) - throw Error("could not verify that '%s' works", program); - } - - stopProgressBar(); + Activity act(*logger, lvlInfo, actUnknown, + fmt("verifying that '%s' works...", storePath)); + auto program = storePath + "/bin/nix-env"; + auto s = runProgram(program, false, {"--version"}); + if (s.find("Nix") == std::string::npos) + throw Error("could not verify that '%s' works", program); + } - { - Activity act(*logger, lvlInfo, actUnknown, fmt("installing '%s' into profile '%s'...", storePath, profileDir)); - runProgram(settings.nixBinDir + "/nix-env", false, - {"--profile", profileDir, "-i", storePath, "--no-sandbox"}); - } + stopProgressBar(); - printError(ANSI_GREEN "upgrade to version %s done" ANSI_NORMAL, version); + { + Activity act( + *logger, lvlInfo, actUnknown, + fmt("installing '%s' into profile '%s'...", storePath, profileDir)); + runProgram(settings.nixBinDir + "/nix-env", false, + {"--profile", profileDir, "-i", storePath, "--no-sandbox"}); } - /* Return the profile in which Nix is installed. */ - Path getProfileDir(ref<Store> store) - { - Path where; + printError(ANSI_GREEN "upgrade to version %s done" ANSI_NORMAL, version); + } - for (auto & dir : tokenizeString<Strings>(getEnv("PATH"), ":")) - if (pathExists(dir + "/nix-env")) { - where = dir; - break; - } + /* Return the profile in which Nix is installed. */ + Path getProfileDir(ref<Store> store) { + Path where; - if (where == "") - throw Error("couldn't figure out how Nix is installed, so I can't upgrade it"); + for (auto& dir : tokenizeString<Strings>(getEnv("PATH"), ":")) + if (pathExists(dir + "/nix-env")) { + where = dir; + break; + } - printInfo("found Nix in '%s'", where); + if (where == "") + throw Error( + "couldn't figure out how Nix is installed, so I can't upgrade it"); - if (hasPrefix(where, "/run/current-system")) - throw Error("Nix on NixOS must be upgraded via 'nixos-rebuild'"); + printInfo("found Nix in '%s'", where); - Path profileDir = dirOf(where); + if (hasPrefix(where, "/run/current-system")) + throw Error("Nix on NixOS must be upgraded via 'nixos-rebuild'"); - // Resolve profile to /nix/var/nix/profiles/<name> link. - while (canonPath(profileDir).find("/profiles/") == std::string::npos && isLink(profileDir)) - profileDir = readLink(profileDir); + Path profileDir = dirOf(where); - printInfo("found profile '%s'", profileDir); + // Resolve profile to /nix/var/nix/profiles/<name> link. + while (canonPath(profileDir).find("/profiles/") == std::string::npos && + isLink(profileDir)) + profileDir = readLink(profileDir); - Path userEnv = canonPath(profileDir, true); + printInfo("found profile '%s'", profileDir); - if (baseNameOf(where) != "bin" || - !hasSuffix(userEnv, "user-environment")) - throw Error("directory '%s' does not appear to be part of a Nix profile", where); + Path userEnv = canonPath(profileDir, true); - if (!store->isValidPath(userEnv)) - throw Error("directory '%s' is not in the Nix store", userEnv); + if (baseNameOf(where) != "bin" || !hasSuffix(userEnv, "user-environment")) + throw Error("directory '%s' does not appear to be part of a Nix profile", + where); - return profileDir; - } + if (!store->isValidPath(userEnv)) + throw Error("directory '%s' is not in the Nix store", userEnv); - /* Return the store path of the latest stable Nix. */ - Path getLatestNix(ref<Store> store) - { - // FIXME: use nixos.org? - auto req = DownloadRequest(storePathsUrl); - auto res = getDownloader()->download(req); + return profileDir; + } - auto state = std::make_unique<EvalState>(Strings(), store); - auto v = state->allocValue(); - state->eval(state->parseExprFromString(*res.data, "/no-such-path"), *v); - Bindings & bindings(*state->allocBindings(0)); - auto v2 = findAlongAttrPath(*state, settings.thisSystem, bindings, *v); + /* Return the store path of the latest stable Nix. */ + Path getLatestNix(ref<Store> store) { + // FIXME: use nixos.org? + auto req = DownloadRequest(storePathsUrl); + auto res = getDownloader()->download(req); - return state->forceString(*v2); - } + auto state = std::make_unique<EvalState>(Strings(), store); + auto v = state->allocValue(); + state->eval(state->parseExprFromString(*res.data, "/no-such-path"), *v); + Bindings& bindings(*state->allocBindings(0)); + auto v2 = findAlongAttrPath(*state, settings.thisSystem, bindings, *v); + + return state->forceString(*v2); + } }; static RegisterCommand r1(make_ref<CmdUpgradeNix>()); |