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, 253 deletions

diff --git a/third_party/nix/src/nix-prefetch-url/nix-prefetch-url.cc b/third_party/nix/src/nix-prefetch-url/nix-prefetch-url.cc
deleted file mode 100644
index b61a38a7f193..000000000000
--- a/third_party/nix/src/nix-prefetch-url/nix-prefetch-url.cc
+++ /dev/null
@@ -1,253 +0,0 @@
-#include <iostream>
-
-#include <absl/strings/match.h>
-#include <fcntl.h>
-#include <glog/logging.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#include "libexpr/attr-path.hh"
-#include "libexpr/common-eval-args.hh"
-#include "libexpr/eval-inline.hh"
-#include "libexpr/eval.hh"
-#include "libmain/shared.hh"
-#include "libstore/download.hh"
-#include "libstore/store-api.hh"
-#include "libutil/finally.hh"
-#include "libutil/hash.hh"
-#include "nix/legacy.hh"
-
-using namespace nix;
-
-/* If ‘uri’ starts with ‘mirror://’, then resolve it using the list of
-   mirrors defined in Nixpkgs. */
-std::string resolveMirrorUri(EvalState& state, std::string uri) {
-  if (std::string(uri, 0, 9) != "mirror://") {
-    return uri;
-  }
-
-  std::string s(uri, 9);
-  auto p = s.find('/');
-  if (p == std::string::npos) {
-    throw Error("invalid mirror URI");
-  }
-  std::string mirrorName(s, 0, p);
-
-  Value vMirrors;
-  state.eval(
-      state.parseExprFromString(
-          "import <nixpkgs/pkgs/build-support/fetchurl/mirrors.nix>", "."),
-      vMirrors);
-  state.forceAttrs(vMirrors);
-
-  auto mirrorList = vMirrors.attrs->find(state.symbols.Create(mirrorName));
-  if (mirrorList == vMirrors.attrs->end()) {
-    throw Error(format("unknown mirror name '%1%'") % mirrorName);
-  }
-  state.forceList(*mirrorList->second.value);
-
-  if (mirrorList->second.value->listSize() < 1) {
-    throw Error(format("mirror URI '%1%' did not expand to anything") % uri);
-  }
-
-  std::string mirror = state.forceString(*(*mirrorList->second.value->list)[0]);
-  return mirror + (absl::EndsWith(mirror, "/") ? "" : "/") +
-         std::string(s, p + 1);
-}
-
-static int _main(int argc, char** argv) {
-  {
-    HashType ht = htSHA256;
-    std::vector<std::string> args;
-    bool printPath = getEnv("PRINT_PATH").has_value();
-    bool fromExpr = false;
-    std::string attrPath;
-    bool unpack = false;
-    std::string name;
-
-    struct MyArgs : LegacyArgs, MixEvalArgs {
-      using LegacyArgs::LegacyArgs;
-    };
-
-    MyArgs myArgs(baseNameOf(argv[0]),
-                  [&](Strings::iterator& arg, const Strings::iterator& end) {
-                    if (*arg == "--help") {
-                      showManPage("nix-prefetch-url");
-                    } else if (*arg == "--version") {
-                      printVersion("nix-prefetch-url");
-                    } else if (*arg == "--type") {
-                      std::string s = getArg(*arg, arg, end);
-                      ht = parseHashType(s);
-                      if (ht == htUnknown) {
-                        throw UsageError(format("unknown hash type '%1%'") % s);
-                      }
-                    } else if (*arg == "--print-path") {
-                      printPath = true;
-                    } else if (*arg == "--attr" || *arg == "-A") {
-                      fromExpr = true;
-                      attrPath = getArg(*arg, arg, end);
-                    } else if (*arg == "--unpack") {
-                      unpack = true;
-                    } else if (*arg == "--name") {
-                      name = getArg(*arg, arg, end);
-                    } else if (*arg != "" && arg->at(0) == '-') {
-                      return false;
-                    } else {
-                      args.push_back(*arg);
-                    }
-                    return true;
-                  });
-
-    myArgs.parseCmdline(argvToStrings(argc, argv));
-
-    if (args.size() > 2) {
-      throw UsageError("too many arguments");
-    }
-
-    auto store = openStore();
-    auto state = std::make_unique<EvalState>(myArgs.searchPath, store);
-
-    std::unique_ptr<Bindings> autoArgs = myArgs.getAutoArgs(*state);
-
-    /* If -A is given, get the URI from the specified Nix
-       expression. */
-    std::string uri;
-    if (!fromExpr) {
-      if (args.empty()) {
-        throw UsageError("you must specify a URI");
-      }
-      uri = args[0];
-    } else {
-      Path path =
-          resolveExprPath(lookupFileArg(*state, args.empty() ? "." : args[0]));
-      Value vRoot;
-      state->evalFile(path, vRoot);
-      Value& v(*findAlongAttrPath(*state, attrPath, autoArgs.get(), vRoot));
-      state->forceAttrs(v);
-
-      /* Extract the URI. */
-      auto attr = v.attrs->find(state->symbols.Create("urls"));
-      if (attr == v.attrs->end()) {
-        throw Error("attribute set does not contain a 'urls' attribute");
-      }
-      state->forceList(*attr->second.value);
-      if (attr->second.value->listSize() < 1) {
-        throw Error("'urls' list is empty");
-      }
-      uri = state->forceString(*(*attr->second.value->list)[0]);
-
-      /* Extract the hash mode. */
-      attr = v.attrs->find(state->symbols.Create("outputHashMode"));
-      if (attr == v.attrs->end()) {
-        LOG(WARNING) << "this does not look like a fetchurl call";
-      } else {
-        unpack = state->forceString(*attr->second.value) == "recursive";
-      }
-
-      /* Extract the name. */
-      if (name.empty()) {
-        attr = v.attrs->find(state->symbols.Create("name"));
-        if (attr != v.attrs->end()) {
-          name = state->forceString(*attr->second.value);
-        }
-      }
-    }
-
-    /* Figure out a name in the Nix store. */
-    if (name.empty()) {
-      name = baseNameOf(uri);
-    }
-    if (name.empty()) {
-      throw Error(format("cannot figure out file name for '%1%'") % uri);
-    }
-
-    /* If an expected hash is given, the file may already exist in
-       the store. */
-    Hash hash;
-    Hash expectedHash(ht);
-    Path storePath;
-    if (args.size() == 2) {
-      auto expectedHash_ = Hash::deserialize(args[1], ht);
-      expectedHash = Hash::unwrap_throw(expectedHash);
-      storePath = store->makeFixedOutputPath(unpack, expectedHash, name);
-      if (store->isValidPath(storePath)) {
-        hash = expectedHash;
-      } else {
-        storePath.clear();
-      }
-    }
-
-    if (storePath.empty()) {
-      auto actualUri = resolveMirrorUri(*state, uri);
-
-      AutoDelete tmpDir(createTempDir(), true);
-      Path tmpFile = Path(tmpDir) + "/tmp";
-
-      /* Download the file. */
-      {
-        AutoCloseFD fd(
-            open(tmpFile.c_str(), O_WRONLY | O_CREAT | O_EXCL, 0600));
-        if (!fd) {
-          throw SysError("creating temporary file '%s'", tmpFile);
-        }
-
-        FdSink sink(fd.get());
-
-        DownloadRequest req(actualUri);
-        req.decompress = false;
-        getDownloader()->download(std::move(req), sink);
-      }
-
-      /* Optionally unpack the file. */
-      if (unpack) {
-        LOG(INFO) << "unpacking...";
-        Path unpacked = Path(tmpDir) + "/unpacked";
-        createDirs(unpacked);
-        if (absl::EndsWith(baseNameOf(uri), ".zip")) {
-          runProgram("unzip", true, {"-qq", tmpFile, "-d", unpacked});
-        } else {
-          // FIXME: this requires GNU tar for decompression.
-          runProgram("tar", true, {"xf", tmpFile, "-C", unpacked});
-        }
-
-        /* If the archive unpacks to a single file/directory, then use
-           that as the top-level. */
-        auto entries = readDirectory(unpacked);
-        if (entries.size() == 1) {
-          tmpFile = unpacked + "/" + entries[0].name;
-        } else {
-          tmpFile = unpacked;
-        }
-      }
-
-      /* FIXME: inefficient; addToStore() will also hash
-         this. */
-      hash = unpack ? hashPath(ht, tmpFile).first : hashFile(ht, tmpFile);
-
-      if (expectedHash != Hash(ht) && expectedHash != hash) {
-        throw Error(format("hash mismatch for '%1%'") % uri);
-      }
-
-      /* Copy the file to the Nix store. FIXME: if RemoteStore
-         implemented addToStoreFromDump() and downloadFile()
-         supported a sink, we could stream the download directly
-         into the Nix store. */
-      storePath = store->addToStore(name, tmpFile, unpack, ht);
-
-      assert(storePath == store->makeFixedOutputPath(unpack, hash, name));
-    }
-
-    if (!printPath) {
-      LOG(INFO) << "path is '" << storePath << "'";
-    }
-
-    std::cout << printHash16or32(hash) << std::endl;
-    if (printPath) {
-      std::cout << storePath << std::endl;
-    }
-
-    return 0;
-  }
-}
-
-static RegisterLegacyCommand s1("nix-prefetch-url", _main);