1 files changed, 0 insertions, 167 deletions
diff --git a/third_party/nix/src/nix/upgrade-nix.cc b/third_party/nix/src/nix/upgrade-nix.cc
deleted file mode 100644
index c7f654d648..0000000000
--- a/third_party/nix/src/nix/upgrade-nix.cc
+++ /dev/null
@@ -1,167 +0,0 @@
-#include <absl/strings/match.h>
-#include <absl/strings/str_cat.h>
-#include <absl/strings/str_split.h>
-#include <glog/logging.h>
-
-#include "libexpr/attr-path.hh"
-#include "libexpr/eval.hh"
-#include "libexpr/names.hh"
-#include "libmain/common-args.hh"
-#include "libstore/download.hh"
-#include "libstore/store-api.hh"
-#include "nix/command.hh"
-
-namespace nix {
-struct CmdUpgradeNix final : 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.empty()) {
-      profileDir = getProfileDir(store);
-    }
-
-    LOG(INFO) << "upgrading Nix in profile '" << profileDir << "'";
-
-    Path storePath;
-    {
-      LOG(INFO) << "querying latest Nix version";
-      storePath = getLatestNix(store);
-    }
-
-    auto version = DrvName(storePathToName(storePath)).version;
-
-    if (dryRun) {
-      LOG(ERROR) << "would upgrade to version " << version;
-      return;
-    }
-
-    {
-      LOG(INFO) << "downloading '" << storePath << "'...";
-      store->ensurePath(storePath);
-    }
-
-    {
-      LOG(INFO) << "verifying that '" << storePath << "' works...";
-      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);
-      }
-    }
-
-    {
-      LOG(INFO) << "installing '" << storePath << "' into profile '"
-                << profileDir << "'...";
-      runProgram(settings.nixBinDir + "/nix-env", false,
-                 {"--profile", profileDir, "-i", storePath, "--no-sandbox"});
-    }
-
-    LOG(INFO) << ANSI_GREEN << "upgrade to version " << version << " done"
-              << ANSI_NORMAL;
-  }
-
-  /* Return the profile in which Nix is installed. */
-  static Path getProfileDir(const ref<Store>& store) {
-    Path where;
-
-    for (auto& dir : absl::StrSplit(getEnv("PATH").value_or(""),
-                                    absl::ByChar(':'), absl::SkipEmpty())) {
-      if (pathExists(absl::StrCat(dir, "/nix-env"))) {
-        where = dir;
-        break;
-      }
-    }
-
-    if (where.empty()) {
-      throw Error(
-          "couldn't figure out how Nix is installed, so I can't upgrade it");
-    }
-
-    LOG(INFO) << "found Nix in '" << where << "'";
-
-    if (absl::StartsWith(where, "/run/current-system")) {
-      throw Error("Nix on NixOS must be upgraded via 'nixos-rebuild'");
-    }
-
-    Path profileDir = dirOf(where);
-
-    // Resolve profile to /nix/var/nix/profiles/<name> link.
-    while (canonPath(profileDir).find("/profiles/") == std::string::npos &&
-           isLink(profileDir)) {
-      profileDir = readLink(profileDir);
-    }
-
-    LOG(INFO) << "found profile '" << profileDir << "'";
-
-    Path userEnv = canonPath(profileDir, true);
-
-    if (baseNameOf(where) != "bin" ||
-        !absl::EndsWith(userEnv, "user-environment")) {
-      throw Error("directory '%s' does not appear to be part of a Nix profile",
-                  where);
-    }
-
-    if (!store->isValidPath(userEnv)) {
-      throw Error("directory '%s' is not in the Nix store", userEnv);
-    }
-
-    return profileDir;
-  }
-
-  /* Return the store path of the latest stable Nix. */
-  Path getLatestNix(const ref<Store>& store) {
-    // FIXME: use nixos.org?
-    auto req = DownloadRequest(storePathsUrl);
-    auto res = getDownloader()->download(req);
-
-    auto state = std::make_unique<EvalState>(Strings(), store);
-    auto v = state->allocValue();
-    state->eval(state->parseExprFromString(*res.data, "/no-such-path"), *v);
-    std::unique_ptr<Bindings> bindings(Bindings::New());
-    auto v2 =
-        findAlongAttrPath(*state, settings.thisSystem, bindings.get(), *v);
-
-    return state->forceString(*v2);
-  }
-};
-}  // namespace nix
-
-static nix::RegisterCommand r1(nix::make_ref<nix::CmdUpgradeNix>());