chore(3p/nix): unvendor tvix 0.1 r/4098

Nothing is using this now, and we'll likely never pick this up again,
but we learned a lot in the process.

Every now and then this breaks in some bizarre way on channel bumps
and it's just a waste of time to maintain that.

Change-Id: Idcf2f5acd4ca7070ce18d7149cbfc0d967dc0a44
Reviewed-on: https://cl.tvl.fyi/c/depot/+/5632
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: lukegb <lukegb@tvl.fyi>
Autosubmit: tazjin <tazjin@tvl.su>

1 files changed, 0 insertions, 386 deletions

diff --git a/third_party/nix/src/libmain/shared.cc b/third_party/nix/src/libmain/shared.cc
deleted file mode 100644
index 331ea6b3a9d2..000000000000
--- a/third_party/nix/src/libmain/shared.cc
+++ /dev/null
@@ -1,386 +0,0 @@
-#include "libmain/shared.hh"
-
-#include <algorithm>
-#include <cctype>
-#include <csignal>
-#include <cstdlib>
-#include <exception>
-#include <iostream>
-#include <mutex>
-#include <utility>
-
-#include <glog/logging.h>
-#include <openssl/crypto.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <unistd.h>
-
-#include "libstore/globals.hh"
-#include "libstore/store-api.hh"
-#include "libutil/util.hh"
-
-namespace nix {
-
-static bool gcWarning = true;
-
-void printGCWarning() {
-  if (!gcWarning) {
-    return;
-  }
-
-  static bool haveWarned = false;
-  if (!haveWarned) {
-    haveWarned = true;
-    LOG(WARNING) << "you did not specify '--add-root'; "
-                 << "the result might be removed by the garbage collector";
-  }
-}
-
-void printMissing(const ref<Store>& store, const PathSet& paths) {
-  unsigned long long downloadSize;
-  unsigned long long narSize;
-  PathSet willBuild;
-  PathSet willSubstitute;
-  PathSet unknown;
-  store->queryMissing(paths, willBuild, willSubstitute, unknown, downloadSize,
-                      narSize);
-  printMissing(store, willBuild, willSubstitute, unknown, downloadSize,
-               narSize);
-}
-
-void printMissing(const ref<Store>& store, const PathSet& willBuild,
-                  const PathSet& willSubstitute, const PathSet& unknown,
-                  unsigned long long downloadSize, unsigned long long narSize) {
-  if (!willBuild.empty()) {
-    LOG(INFO) << "these derivations will be built:";
-    Paths sorted = store->topoSortPaths(willBuild);
-    reverse(sorted.begin(), sorted.end());
-    for (auto& i : sorted) {
-      LOG(INFO) << "  " << i;
-    }
-  }
-
-  if (!willSubstitute.empty()) {
-    LOG(INFO) << "these paths will be fetched ("
-              << (downloadSize / (1024.0 * 1024.0)) << " MiB download, "
-              << (narSize / (1024.0 * 1024.0)) << "MiB unpacked):";
-
-    for (auto& i : willSubstitute) {
-      LOG(INFO) << i;
-    }
-  }
-
-  if (!unknown.empty()) {
-    LOG(INFO) << "don't know how to build these paths"
-              << (settings.readOnlyMode
-                      ? " (may be caused by read-only store access)"
-                      : "")
-              << ":";
-
-    for (auto& i : unknown) {
-      LOG(INFO) << i;
-    }
-  }
-}
-
-std::string getArg(const std::string& opt, Strings::iterator& i,
-                   const Strings::iterator& end) {
-  ++i;
-  if (i == end) {
-    throw UsageError(format("'%1%' requires an argument") % opt);
-  }
-
-  return *i;
-}
-
-#if OPENSSL_VERSION_NUMBER < 0x10101000L
-/* OpenSSL is not thread-safe by default - it will randomly crash
-   unless the user supplies a mutex locking function. So let's do
-   that. */
-static std::vector<std::mutex> opensslLocks;
-
-static void opensslLockCallback(int mode, int type, const char* file,
-                                int line) {
-  if (mode & CRYPTO_LOCK)
-    opensslLocks[type].lock();
-  else
-    opensslLocks[type].unlock();
-}
-#endif
-
-static void sigHandler(int signo) {}
-
-void initNix() {
-  /* Turn on buffering for cerr. */
-#if HAVE_PUBSETBUF
-  static char buf[1024];
-  std::cerr.rdbuf()->pubsetbuf(buf, sizeof(buf));
-#endif
-
-#if OPENSSL_VERSION_NUMBER < 0x10101000L
-  /* Initialise OpenSSL locking. */
-  opensslLocks = std::vector<std::mutex>(CRYPTO_num_locks());
-  CRYPTO_set_locking_callback(opensslLockCallback);
-#endif
-
-  loadConfFile();
-
-  startSignalHandlerThread();
-
-  /* Reset SIGCHLD to its default. */
-  struct sigaction act;
-  sigemptyset(&act.sa_mask);
-  act.sa_handler = SIG_DFL;
-  act.sa_flags = 0;
-  if (sigaction(SIGCHLD, &act, nullptr) != 0) {
-    throw SysError("resetting SIGCHLD");
-  }
-
-  /* Install a dummy SIGUSR1 handler for use with pthread_kill(). */
-  act.sa_handler = sigHandler;
-  if (sigaction(SIGUSR1, &act, nullptr) != 0) {
-    throw SysError("handling SIGUSR1");
-  }
-
-  /* Register a SIGSEGV handler to detect stack overflows. */
-  detectStackOverflow();
-
-  /* There is no privacy in the Nix system ;-)  At least not for
-     now.  In particular, store objects should be readable by
-     everybody. */
-  umask(0022);
-
-  /* Initialise the PRNG. */
-  struct timeval tv;
-  gettimeofday(&tv, nullptr);
-  srandom(tv.tv_usec);
-}
-
-LegacyArgs::LegacyArgs(
-    const std::string& programName,
-    std::function<bool(Strings::iterator& arg, const Strings::iterator& end)>
-        parseArg)
-    : MixCommonArgs(programName), parseArg(std::move(parseArg)) {
-  mkFlag()
-      .longName("no-build-output")
-      .shortName('Q')
-      .description("do not show build output")
-      .set(&settings.verboseBuild, false);
-
-  mkFlag()
-      .longName("keep-failed")
-      .shortName('K')
-      .description("keep temporary directories of failed builds")
-      .set(&(bool&)settings.keepFailed, true);
-
-  mkFlag()
-      .longName("keep-going")
-      .shortName('k')
-      .description("keep going after a build fails")
-      .set(&(bool&)settings.keepGoing, true);
-
-  mkFlag()
-      .longName("fallback")
-      .description("build from source if substitution fails")
-      .set(&(bool&)settings.tryFallback, true);
-
-  auto intSettingAlias = [&](char shortName, const std::string& longName,
-                             const std::string& description,
-                             const std::string& dest) {
-    mkFlag<unsigned int>(shortName, longName, description, [=](unsigned int n) {
-      settings.set(dest, std::to_string(n));
-    });
-  };
-
-  intSettingAlias(0, "cores",
-                  "maximum number of CPU cores to use inside a build", "cores");
-  intSettingAlias(0, "max-silent-time",
-                  "number of seconds of silence before a build is killed",
-                  "max-silent-time");
-  intSettingAlias(0, "timeout", "number of seconds before a build is killed",
-                  "timeout");
-
-  mkFlag(0, "readonly-mode", "do not write to the Nix store",
-         &settings.readOnlyMode);
-
-  mkFlag(0, "no-gc-warning", "disable warning about not using '--add-root'",
-         &gcWarning, false);
-
-  mkFlag()
-      .longName("store")
-      .label("store-uri")
-      .description("URI of the Nix store to use")
-      .dest(&(std::string&)settings.storeUri);
-}
-
-bool LegacyArgs::processFlag(Strings::iterator& pos, Strings::iterator end) {
-  if (MixCommonArgs::processFlag(pos, end)) {
-    return true;
-  }
-  bool res = parseArg(pos, end);
-  if (res) {
-    ++pos;
-  }
-  return res;
-}
-
-bool LegacyArgs::processArgs(const Strings& args, bool finish) {
-  if (args.empty()) {
-    return true;
-  }
-  assert(args.size() == 1);
-  Strings ss(args);
-  auto pos = ss.begin();
-  if (!parseArg(pos, ss.end())) {
-    throw UsageError(format("unexpected argument '%1%'") % args.front());
-  }
-  return true;
-}
-
-void parseCmdLine(
-    int argc, char** argv,
-    std::function<bool(Strings::iterator& arg, const Strings::iterator& end)>
-        parseArg) {
-  parseCmdLine(baseNameOf(argv[0]), argvToStrings(argc, argv),
-               std::move(parseArg));
-}
-
-void parseCmdLine(
-    const std::string& programName, const Strings& args,
-    std::function<bool(Strings::iterator& arg, const Strings::iterator& end)>
-        parseArg) {
-  LegacyArgs(programName, std::move(parseArg)).parseCmdline(args);
-}
-
-void printVersion(const std::string& programName) {
-  std::cout << format("%1% (Tvix) %2%") % programName % nixVersion << std::endl;
-
-  // TODO(tazjin): figure out what the fuck this is
-  /*if (verbosity > lvlInfo) {
-    Strings cfg;
-#if HAVE_BOEHMGC
-    cfg.push_back("gc");
-#endif
-#if HAVE_SODIUM
-    cfg.push_back("signed-caches");
-#endif
-    std::cout << "Features: " << concatStringsSep(", ", cfg) << "\n";
-    std::cout << "Configuration file: " << settings.nixConfDir + "/nix.conf"
-              << "\n";
-    std::cout << "Store directory: " << settings.nixStore << "\n";
-    std::cout << "State directory: " << settings.nixStateDir << "\n";
-    } */
-  throw Exit();
-}
-
-void showManPage(const std::string& name) {
-  restoreSignals();
-  setenv("MANPATH", settings.nixManDir.c_str(), 1);
-  execlp("man", "man", name.c_str(), nullptr);
-  throw SysError(format("command 'man %1%' failed") % name.c_str());
-}
-
-int handleExceptions(const std::string& programName,
-                     const std::function<void()>& fun) {
-  ReceiveInterrupts receiveInterrupts;  // FIXME: need better place for this
-
-  std::string error = ANSI_RED "error:" ANSI_NORMAL " ";
-  try {
-    try {
-      fun();
-    } catch (...) {
-      /* Subtle: we have to make sure that any `interrupted'
-         condition is discharged before we reach printMsg()
-         below, since otherwise it will throw an (uncaught)
-         exception. */
-      setInterruptThrown();
-      throw;
-    }
-  } catch (Exit& e) {
-    return e.status;
-  } catch (UsageError& e) {
-    LOG(INFO) << e.what();
-    LOG(INFO) << "Try '" << programName << " --help' for more information.";
-    return 1;
-  } catch (BaseError& e) {
-    LOG(ERROR) << error << (settings.showTrace ? e.prefix() : "") << e.msg();
-    if (!e.prefix().empty() && !settings.showTrace) {
-      LOG(INFO) << "(use '--show-trace' to show detailed location information)";
-    }
-    return static_cast<int>(e.status);
-  } catch (std::bad_alloc& e) {
-    LOG(ERROR) << error << "failed to allocate: " << e.what();
-    return 1;
-  } catch (std::exception& e) {
-    LOG(ERROR) << error << e.what();
-    return 1;
-  }
-
-  return 0;
-}
-
-RunPager::RunPager() {
-  if (isatty(STDOUT_FILENO) == 0) {
-    return;
-  }
-  char* pager = getenv("NIX_PAGER");
-  if (pager == nullptr) {
-    pager = getenv("PAGER");
-  }
-  if (pager && (std::string(pager) == "" || std::string(pager) == "cat")) {
-    return;
-  }
-
-  Pipe toPager;
-  toPager.create();
-
-  pid = startProcess([&]() {
-    if (dup2(toPager.readSide.get(), STDIN_FILENO) == -1) {
-      throw SysError("dupping stdin");
-    }
-    if (getenv("LESS") == nullptr) {
-      setenv("LESS", "FRSXMK", 1);
-    }
-    restoreSignals();
-    if (pager != nullptr) {
-      execl("/bin/sh", "sh", "-c", pager, nullptr);
-    }
-    execlp("pager", "pager", nullptr);
-    execlp("less", "less", nullptr);
-    execlp("more", "more", nullptr);
-    throw SysError(format("executing '%1%'") % pager);
-  });
-
-  pid.setKillSignal(SIGINT);
-
-  if (dup2(toPager.writeSide.get(), STDOUT_FILENO) == -1) {
-    throw SysError("dupping stdout");
-  }
-}
-
-RunPager::~RunPager() {
-  try {
-    if (pid != Pid(-1)) {
-      std::cout.flush();
-      close(STDOUT_FILENO);
-      pid.wait();
-    }
-  } catch (...) {
-    ignoreException();
-  }
-}
-
-std::string showBytes(unsigned long long bytes) {
-  return (format("%.2f MiB") % (bytes / (1024.0 * 1024.0))).str();
-}
-
-PrintFreed::~PrintFreed() {
-  if (show) {
-    std::cout << format("%1% store paths deleted, %2% freed\n") %
-                     results.paths.size() % showBytes(results.bytesFreed);
-  }
-}
-
-Exit::~Exit() = default;
-
-}  // namespace nix