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, 147 deletions

diff --git a/third_party/nix/src/libutil/hash.hh b/third_party/nix/src/libutil/hash.hh
deleted file mode 100644
index 8b52ac657e7f..000000000000
--- a/third_party/nix/src/libutil/hash.hh
+++ /dev/null
@@ -1,147 +0,0 @@
-#pragma once
-
-#include <absl/status/statusor.h>
-
-#include "libproto/worker.grpc.pb.h"
-#include "libutil/serialise.hh"
-#include "libutil/types.hh"
-
-namespace nix {
-
-// Size of the hashes rendered in store paths, in bytes
-constexpr unsigned int kStorePathHashSize = 20;
-
-MakeError(BadHash, Error);
-
-// TODO(grfn): Replace this with the hash type enum from the daemon proto so we
-// don't have to juggle two different types
-enum HashType : char { htUnknown, htMD5, htSHA1, htSHA256, htSHA512 };
-
-std::optional<HashType> hash_type_from(nix::proto::HashType hash_type);
-
-nix::proto::HashType HashTypeToProto(HashType hash_type);
-
-const int md5HashSize = 16;
-const int sha1HashSize = 20;
-const int sha256HashSize = 32;
-const int sha512HashSize = 64;
-
-// omitted: E O U T
-constexpr char base32Chars[] = "0123456789abcdfghijklmnpqrsvwxyz";
-
-enum Base : int { Base64, Base32, Base16, SRI };
-
-struct Hash {
-  static const unsigned int maxHashSize = 64;
-  unsigned int hashSize = 0;
-  unsigned char hash[maxHashSize] = {};
-
-  HashType type = htUnknown;
-
-  /* Create an unset hash object. */
-  Hash(){};
-
-  /* Create a zero-filled hash object. */
-  explicit Hash(HashType type) : type(type) { init(); };
-
-  /* Initialize the hash from a string representation, in the format
-     "[<type>:]<base16|base32|base64>" or "<type>-<base64>" (a
-     Subresource Integrity hash expression). If the 'type' argument
-     is htUnknown, then the hash type must be specified in the
-     string. */
-  explicit Hash(std::string_view s, HashType type = htUnknown);
-
-  /* Status-returning version of above constructor */
-  static absl::StatusOr<Hash> deserialize(std::string_view s,
-                                          HashType type = htUnknown);
-
-  // Legacy unwrapper for StatusOr. Throws BadHash.
-  static Hash unwrap_throw(absl::StatusOr<Hash> hash) noexcept(false);
-
-  void init();
-
-  /* Check whether a hash is set. */
-  explicit operator bool() const { return type != htUnknown; }
-
-  /* Check whether two hash are equal. */
-  bool operator==(const Hash& h2) const;
-
-  /* Check whether two hash are not equal. */
-  bool operator!=(const Hash& h2) const;
-
-  /* For sorting. */
-  bool operator<(const Hash& h) const;
-
-  /* Returns the length of a base-16 representation of this hash. */
-  size_t base16Len() const { return hashSize * 2; }
-
-  /* Returns the length of a base-32 representation of this hash. */
-  size_t base32Len() const { return (hashSize * 8 - 1) / 5 + 1; }
-
-  /* Returns the length of a base-64 representation of this hash. */
-  size_t base64Len() const { return ((4 * hashSize / 3) + 3) & ~3; }
-
-  /* Return a string representation of the hash, in base-16, base-32
-     or base-64. By default, this is prefixed by the hash type
-     (e.g. "sha256:"). */
-  std::string to_string(Base base = Base32, bool includeType = true) const;
-
-  /* Returns whether the passed string contains entirely valid base16
-     characters. */
-  static bool IsValidBase16(absl::string_view s);
-
-  /* Returns whether the passed string contains entirely valid base32
-     characters. */
-  static bool IsValidBase32(absl::string_view s);
-
-  // Convert this Hash to the format expected in store paths
-  [[nodiscard]] std::string ToStorePathHash() const;
-};
-
-/* Print a hash in base-16 if it's MD5, or base-32 otherwise. */
-std::string printHash16or32(const Hash& hash);
-
-/* Compute the hash of the given string. */
-Hash hashString(HashType ht, const std::string& s);
-
-/* Compute the hash of the given file. */
-Hash hashFile(HashType ht, const Path& path);
-
-/* A pair of the Hash, and the number of bytes consumed. */
-typedef std::pair<Hash, unsigned long long> HashResult;
-
-/* Compute the hash of the given path.  The hash is defined as
-   (essentially) hashString(ht, dumpPath(path)). */
-HashResult hashPath(HashType ht, const Path& path,
-                    PathFilter& filter = defaultPathFilter);
-
-/* Compress a hash to the specified number of bytes by cyclically
-   XORing bytes together. */
-Hash compressHash(const Hash& hash, unsigned int newSize);
-
-/* Parse a string representing a hash type. */
-HashType parseHashType(const std::string& s);
-
-/* And the reverse. */
-std::string printHashType(HashType ht);
-
-namespace hash {
-union Ctx;
-}
-
-class HashSink : public BufferedSink {
- private:
-  HashType ht;
-  std::unique_ptr<hash::Ctx> ctx;
-  unsigned long long bytes;
-
- public:
-  explicit HashSink(HashType ht);
-  HashSink(const HashSink& h);
-  ~HashSink();
-  void write(const unsigned char* data, size_t len);
-  HashResult finish();
-  HashResult currentHash();
-};
-
-}  // namespace nix