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, 219 deletions

diff --git a/third_party/nix/src/libutil/args.cc b/third_party/nix/src/libutil/args.cc
deleted file mode 100644
index 2be8a1b0ce2a..000000000000
--- a/third_party/nix/src/libutil/args.cc
+++ /dev/null
@@ -1,219 +0,0 @@
-#include "libutil/args.hh"
-
-#include "libutil/hash.hh"
-
-namespace nix {
-
-Args::FlagMaker Args::mkFlag() { return FlagMaker(*this); }
-
-Args::FlagMaker::~FlagMaker() {
-  assert(!flag->longName.empty());
-  args.longFlags[flag->longName] = flag;
-  if (flag->shortName != 0) {
-    args.shortFlags[flag->shortName] = flag;
-  }
-}
-
-void Args::parseCmdline(const Strings& _cmdline) {
-  Strings pendingArgs;
-  bool dashDash = false;
-
-  Strings cmdline(_cmdline);
-
-  for (auto pos = cmdline.begin(); pos != cmdline.end();) {
-    auto arg = *pos;
-
-    /* Expand compound dash options (i.e., `-qlf' -> `-q -l -f',
-       `-j3` -> `-j 3`). */
-    if (!dashDash && arg.length() > 2 && arg[0] == '-' && arg[1] != '-' &&
-        (isalpha(arg[1]) != 0)) {
-      *pos = std::string("-") + arg[1];
-      auto next = pos;
-      ++next;
-      for (unsigned int j = 2; j < arg.length(); j++) {
-        if (isalpha(arg[j]) != 0) {
-          cmdline.insert(next, std::string("-") + arg[j]);
-        } else {
-          cmdline.insert(next, std::string(arg, j));
-          break;
-        }
-      }
-      arg = *pos;
-    }
-
-    if (!dashDash && arg == "--") {
-      dashDash = true;
-      ++pos;
-    } else if (!dashDash && std::string(arg, 0, 1) == "-") {
-      if (!processFlag(pos, cmdline.end())) {
-        throw UsageError(format("unrecognised flag '%1%'") % arg);
-      }
-    } else {
-      pendingArgs.push_back(*pos++);
-      if (processArgs(pendingArgs, false)) {
-        pendingArgs.clear();
-      }
-    }
-  }
-
-  processArgs(pendingArgs, true);
-}
-
-void Args::printHelp(const std::string& programName, std::ostream& out) {
-  std::cout << "Usage: " << programName << " <FLAGS>...";
-  for (auto& exp : expectedArgs) {
-    std::cout << renderLabels({exp.label});
-    // FIXME: handle arity > 1
-    if (exp.arity == 0) {
-      std::cout << "...";
-    }
-    if (exp.optional) {
-      std::cout << "?";
-    }
-  }
-  std::cout << "\n";
-
-  auto s = description();
-  if (!s.empty()) {
-    std::cout << "\nSummary: " << s << ".\n";
-  }
-
-  if (!longFlags.empty() != 0u) {
-    std::cout << "\n";
-    std::cout << "Flags:\n";
-    printFlags(out);
-  }
-}
-
-void Args::printFlags(std::ostream& out) {
-  Table2 table;
-  for (auto& flag : longFlags) {
-    if (hiddenCategories.count(flag.second->category) != 0u) {
-      continue;
-    }
-    table.push_back(std::make_pair(
-        (flag.second->shortName != 0
-             ? std::string("-") + flag.second->shortName + ", "
-             : "    ") +
-            "--" + flag.first + renderLabels(flag.second->labels),
-        flag.second->description));
-  }
-  printTable(out, table);
-}
-
-bool Args::processFlag(Strings::iterator& pos, Strings::iterator end) {
-  assert(pos != end);
-
-  auto process = [&](const std::string& name, const Flag& flag) -> bool {
-    ++pos;
-    std::vector<std::string> args;
-    for (size_t n = 0; n < flag.arity; ++n) {
-      if (pos == end) {
-        if (flag.arity == ArityAny) {
-          break;
-        }
-        throw UsageError(format("flag '%1%' requires %2% argument(s)") % name %
-                         flag.arity);
-      }
-      args.push_back(*pos++);
-    }
-    flag.handler(std::move(args));
-    return true;
-  };
-
-  if (std::string(*pos, 0, 2) == "--") {
-    auto i = longFlags.find(std::string(*pos, 2));
-    if (i == longFlags.end()) {
-      return false;
-    }
-    return process("--" + i->first, *i->second);
-  }
-
-  if (std::string(*pos, 0, 1) == "-" && pos->size() == 2) {
-    auto c = (*pos)[1];
-    auto i = shortFlags.find(c);
-    if (i == shortFlags.end()) {
-      return false;
-    }
-    return process(std::string("-") + c, *i->second);
-  }
-
-  return false;
-}
-
-bool Args::processArgs(const Strings& args, bool finish) {
-  if (expectedArgs.empty()) {
-    if (!args.empty()) {
-      throw UsageError(format("unexpected argument '%1%'") % args.front());
-    }
-    return true;
-  }
-
-  auto& exp = expectedArgs.front();
-
-  bool res = false;
-
-  if ((exp.arity == 0 && finish) ||
-      (exp.arity > 0 && args.size() == exp.arity)) {
-    std::vector<std::string> ss;
-    for (auto& s : args) {
-      ss.push_back(s);
-    }
-    exp.handler(std::move(ss));
-    expectedArgs.pop_front();
-    res = true;
-  }
-
-  if (finish && !expectedArgs.empty() && !expectedArgs.front().optional) {
-    throw UsageError("more arguments are required");
-  }
-
-  return res;
-}
-
-Args::FlagMaker& Args::FlagMaker::mkHashTypeFlag(HashType* ht) {
-  arity(1);
-  label("type");
-  description("hash algorithm ('md5', 'sha1', 'sha256', or 'sha512')");
-  handler([ht](const std::string& s) {
-    *ht = parseHashType(s);
-    if (*ht == htUnknown) {
-      throw UsageError("unknown hash type '%1%'", s);
-    }
-  });
-  return *this;
-}
-
-Strings argvToStrings(int argc, char** argv) {
-  Strings args;
-  argc--;
-  argv++;
-  while ((argc--) != 0) {
-    args.push_back(*argv++);
-  }
-  return args;
-}
-
-std::string renderLabels(const Strings& labels) {
-  std::string res;
-  for (auto label : labels) {
-    for (auto& c : label) {
-      c = std::toupper(c);
-    }
-    res += " <" + label + ">";
-  }
-  return res;
-}
-
-void printTable(std::ostream& out, const Table2& table) {
-  size_t max = 0;
-  for (auto& row : table) {
-    max = std::max(max, row.first.size());
-  }
-  for (auto& row : table) {
-    out << "  " << row.first << std::string(max - row.first.size() + 2, ' ')
-        << row.second << "\n";
-  }
-}
-
-}  // namespace nix