Renamed HashFormat::Base32 to HashFormat::Nix32

...and also adjusted parsing accordingly.

Also added CLI completion for HashFormats.

https://github.com/NixOS/nix/issues/8876

src/libexpr/primops/fetchTree.cc

@@ -304,7 +304,7 @@ static void fetch(EvalState & state, const PosIdx pos, Value * * args, Value & v
             : hashFile(HashAlgorithm::SHA256, state.store->toRealPath(storePath));
         if (hash != *expectedHash)
             state.debugThrowLastTrace(EvalError((unsigned int) 102, "hash mismatch in file downloaded from '%s':\n  specified: %s\n  got:       %s",
-                *url, expectedHash->to_string(HashFormat::Base32, true), hash.to_string(HashFormat::Base32, true)));
+                                                *url, expectedHash->to_string(HashFormat::Nix32, true), hash.to_string(HashFormat::Nix32, true)));
     }
 
     state.allowAndSetStorePathString(storePath, v);

src/libfetchers/git.cc

@@ -52,7 +52,7 @@ bool touchCacheFile(const Path & path, time_t touch_time)
 Path getCachePath(std::string_view key)
 {
     return getCacheDir() + "/nix/gitv3/" +
-        hashString(HashAlgorithm::SHA256, key).to_string(HashFormat::Base32, false);
+        hashString(HashAlgorithm::SHA256, key).to_string(HashFormat::Nix32, false);
 }
 
 // Returns the name of the HEAD branch.

src/libfetchers/mercurial.cc

@@ -267,7 +267,7 @@ struct MercurialInputScheme : InputScheme
             }
         }
 
-        Path cacheDir = fmt("%s/nix/hg/%s", getCacheDir(), hashString(HashAlgorithm::SHA256, actualUrl).to_string(HashFormat::Base32, false));
+        Path cacheDir = fmt("%s/nix/hg/%s", getCacheDir(), hashString(HashAlgorithm::SHA256, actualUrl).to_string(HashFormat::Nix32, false));
 
         /* If this is a commit hash that we already have, we don't
            have to pull again. */

src/libstore/binary-cache-store.cc

@@ -165,8 +165,8 @@ ref<const ValidPathInfo> BinaryCacheStore::addToStoreCommon(
     auto [fileHash, fileSize] = fileHashSink.finish();
     narInfo->fileHash = fileHash;
     narInfo->fileSize = fileSize;
-    narInfo->url = "nar/" + narInfo->fileHash->to_string(HashFormat::Base32, false) + ".nar"
+    narInfo->url = "nar/" + narInfo->fileHash->to_string(HashFormat::Nix32, false) + ".nar"
-        + (compression == "xz" ? ".xz" :
+                   + (compression == "xz" ? ".xz" :
            compression == "bzip2" ? ".bz2" :
            compression == "zstd" ? ".zst" :
            compression == "lzip" ? ".lzip" :

src/libstore/build/local-derivation-goal.cc

@@ -1067,7 +1067,7 @@ void LocalDerivationGoal::initTmpDir() {
                 env[i.first] = i.second;
             } else {
                 auto hash = hashString(HashAlgorithm::SHA256, i.first);
-                std::string fn = ".attr-" + hash.to_string(HashFormat::Base32, false);
+                std::string fn = ".attr-" + hash.to_string(HashFormat::Nix32, false);
                 Path p = tmpDir + "/" + fn;
                 writeFile(p, rewriteStrings(i.second, inputRewrites));
                 chownToBuilder(p);

src/libstore/content-address.cc

@@ -61,7 +61,7 @@ std::string ContentAddress::render() const
                 + makeFileIngestionPrefix(method);
         },
     }, method.raw)
-        + this->hash.to_string(HashFormat::Base32, true);
+        + this->hash.to_string(HashFormat::Nix32, true);
 }
 
 /**

src/libstore/derivations.cc

@@ -958,7 +958,7 @@ void writeDerivation(Sink & out, const StoreDirConfig & store, const BasicDeriva
 std::string hashPlaceholder(const OutputNameView outputName)
 {
     // FIXME: memoize?
-    return "/" + hashString(HashAlgorithm::SHA256, concatStrings("nix-output:", outputName)).to_string(HashFormat::Base32, false);
+    return "/" + hashString(HashAlgorithm::SHA256, concatStrings("nix-output:", outputName)).to_string(HashFormat::Nix32, false);
 }
 
 

src/libstore/downstream-placeholder.cc

@@ -5,7 +5,7 @@ namespace nix {
 
 std::string DownstreamPlaceholder::render() const
 {
-    return "/" + hash.to_string(HashFormat::Base32, false);
+    return "/" + hash.to_string(HashFormat::Nix32, false);
 }
 
 
@@ -31,7 +31,7 @@ DownstreamPlaceholder DownstreamPlaceholder::unknownDerivation(
     xpSettings.require(Xp::DynamicDerivations);
     auto compressed = compressHash(placeholder.hash, 20);
     auto clearText = "nix-computed-output:"
-        + compressed.to_string(HashFormat::Base32, false)
+        + compressed.to_string(HashFormat::Nix32, false)
         + ":" + std::string { outputName };
     return DownstreamPlaceholder {
         hashString(HashAlgorithm::SHA256, clearText)

src/libstore/export-import.cc

@@ -41,7 +41,7 @@ void Store::exportPath(const StorePath & path, Sink & sink)
     Hash hash = hashSink.currentHash().first;
     if (hash != info->narHash && info->narHash != Hash(info->narHash.algo))
         throw Error("hash of path '%s' has changed from '%s' to '%s'!",
-            printStorePath(path), info->narHash.to_string(HashFormat::Base32, true), hash.to_string(HashFormat::Base32, true));
+                    printStorePath(path), info->narHash.to_string(HashFormat::Nix32, true), hash.to_string(HashFormat::Nix32, true));
 
     teeSink
         << exportMagic

src/libstore/gc.cc

@@ -50,7 +50,7 @@ static void makeSymlink(const Path & link, const Path & target)
 
 void LocalStore::addIndirectRoot(const Path & path)
 {
-    std::string hash = hashString(HashAlgorithm::SHA1, path).to_string(HashFormat::Base32, false);
+    std::string hash = hashString(HashAlgorithm::SHA1, path).to_string(HashFormat::Nix32, false);
     Path realRoot = canonPath(fmt("%1%/%2%/auto/%3%", stateDir, gcRootsDir, hash));
     makeSymlink(realRoot, path);
 }

src/libstore/local-store.cc

@@ -1080,7 +1080,7 @@ void LocalStore::addToStore(const ValidPathInfo & info, Source & source,
 
             if (hashResult.first != info.narHash)
                 throw Error("hash mismatch importing path '%s';\n  specified: %s\n  got:       %s",
-                    printStorePath(info.path), info.narHash.to_string(HashFormat::Base32, true), hashResult.first.to_string(HashFormat::Base32, true));
+                            printStorePath(info.path), info.narHash.to_string(HashFormat::Nix32, true), hashResult.first.to_string(HashFormat::Nix32, true));
 
             if (hashResult.second != info.narSize)
                 throw Error("size mismatch importing path '%s';\n  specified: %s\n  got:       %s",
@@ -1096,8 +1096,8 @@ void LocalStore::addToStore(const ValidPathInfo & info, Source & source,
                 if (specified.hash != actualHash.hash) {
                     throw Error("ca hash mismatch importing path '%s';\n  specified: %s\n  got:       %s",
                         printStorePath(info.path),
-                        specified.hash.to_string(HashFormat::Base32, true),
+                        specified.hash.to_string(HashFormat::Nix32, true),
-                        actualHash.hash.to_string(HashFormat::Base32, true));
+                        actualHash.hash.to_string(HashFormat::Nix32, true));
                 }
             }
 
@@ -1389,7 +1389,7 @@ bool LocalStore::verifyStore(bool checkContents, RepairFlag repair)
         for (auto & link : readDirectory(linksDir)) {
             printMsg(lvlTalkative, "checking contents of '%s'", link.name);
             Path linkPath = linksDir + "/" + link.name;
-            std::string hash = hashPath(HashAlgorithm::SHA256, linkPath).first.to_string(HashFormat::Base32, false);
+            std::string hash = hashPath(HashAlgorithm::SHA256, linkPath).first.to_string(HashFormat::Nix32, false);
             if (hash != link.name) {
                 printError("link '%s' was modified! expected hash '%s', got '%s'",
                     linkPath, link.name, hash);
@@ -1422,7 +1422,7 @@ bool LocalStore::verifyStore(bool checkContents, RepairFlag repair)
 
                 if (info->narHash != nullHash && info->narHash != current.first) {
                     printError("path '%s' was modified! expected hash '%s', got '%s'",
-                        printStorePath(i), info->narHash.to_string(HashFormat::Base32, true), current.first.to_string(HashFormat::Base32, true));
+                               printStorePath(i), info->narHash.to_string(HashFormat::Nix32, true), current.first.to_string(HashFormat::Nix32, true));
                     if (repair) repairPath(i); else errors = true;
                 } else {
 

src/libstore/nar-info-disk-cache.cc

@@ -333,9 +333,9 @@ public:
                     (std::string(info->path.name()))
                     (narInfo ? narInfo->url : "", narInfo != 0)
                     (narInfo ? narInfo->compression : "", narInfo != 0)
-                    (narInfo && narInfo->fileHash ? narInfo->fileHash->to_string(HashFormat::Base32, true) : "", narInfo && narInfo->fileHash)
+                    (narInfo && narInfo->fileHash ? narInfo->fileHash->to_string(HashFormat::Nix32, true) : "", narInfo && narInfo->fileHash)
                     (narInfo ? narInfo->fileSize : 0, narInfo != 0 && narInfo->fileSize)
-                    (info->narHash.to_string(HashFormat::Base32, true))
+                    (info->narHash.to_string(HashFormat::Nix32, true))
                     (info->narSize)
                     (concatStringsSep(" ", info->shortRefs()))
                     (info->deriver ? std::string(info->deriver->to_string()) : "", (bool) info->deriver)

src/libstore/nar-info.cc

@@ -114,10 +114,10 @@ std::string NarInfo::to_string(const Store & store) const
     assert(compression != "");
     res += "Compression: " + compression + "\n";
     assert(fileHash && fileHash->algo == HashAlgorithm::SHA256);
-    res += "FileHash: " + fileHash->to_string(HashFormat::Base32, true) + "\n";
+    res += "FileHash: " + fileHash->to_string(HashFormat::Nix32, true) + "\n";
     res += "FileSize: " + std::to_string(fileSize) + "\n";
     assert(narHash.algo == HashAlgorithm::SHA256);
-    res += "NarHash: " + narHash.to_string(HashFormat::Base32, true) + "\n";
+    res += "NarHash: " + narHash.to_string(HashFormat::Nix32, true) + "\n";
     res += "NarSize: " + std::to_string(narSize) + "\n";
 
     res += "References: " + concatStringsSep(" ", shortRefs()) + "\n";

src/libstore/optimise-store.cc

@@ -147,10 +147,10 @@ void LocalStore::optimisePath_(Activity * act, OptimiseStats & stats,
        contents of the symlink (i.e. the result of readlink()), not
        the contents of the target (which may not even exist). */
     Hash hash = hashPath(HashAlgorithm::SHA256, path).first;
-    debug("'%1%' has hash '%2%'", path, hash.to_string(HashFormat::Base32, true));
+    debug("'%1%' has hash '%2%'", path, hash.to_string(HashFormat::Nix32, true));
 
     /* Check if this is a known hash. */
-    Path linkPath = linksDir + "/" + hash.to_string(HashFormat::Base32, false);
+    Path linkPath = linksDir + "/" + hash.to_string(HashFormat::Nix32, false);
 
     /* Maybe delete the link, if it has been corrupted. */
     if (pathExists(linkPath)) {

src/libstore/parsed-derivations.cc

@@ -146,7 +146,7 @@ static nlohmann::json pathInfoToJSON(
         auto info = store.queryPathInfo(storePath);
 
         auto & jsonPath = jsonList.emplace_back(
-            info->toJSON(store, false, HashFormat::Base32));
+            info->toJSON(store, false, HashFormat::Nix32));
 
         // Add the path to the object whose metadata we are including.
         jsonPath["path"] = store.printStorePath(storePath);

src/libstore/path-info.cc

@@ -31,9 +31,9 @@ std::string ValidPathInfo::fingerprint(const Store & store) const
         throw Error("cannot calculate fingerprint of path '%s' because its size is not known",
             store.printStorePath(path));
     return
-        "1;" + store.printStorePath(path) + ";"
+            "1;" + store.printStorePath(path) + ";"
-        + narHash.to_string(HashFormat::Base32, true) + ";"
+            + narHash.to_string(HashFormat::Nix32, true) + ";"
-        + std::to_string(narSize) + ";"
+            + std::to_string(narSize) + ";"
         + concatStringsSep(",", store.printStorePathSet(references));
 }
 

src/libstore/path.cc

@@ -35,7 +35,7 @@ StorePath::StorePath(std::string_view _baseName)
 }
 
 StorePath::StorePath(const Hash & hash, std::string_view _name)
-    : baseName((hash.to_string(HashFormat::Base32, false) + "-").append(std::string(_name)))
+    : baseName((hash.to_string(HashFormat::Nix32, false) + "-").append(std::string(_name)))
 {
     checkName(baseName, name());
 }

src/libutil/args.cc

@@ -544,11 +544,45 @@ nlohmann::json Args::toJSON()
     return res;
 }
 
+static void hashFormatCompleter(AddCompletions & completions, size_t index, std::string_view prefix)
+{
+    for (auto & format : hashFormats) {
+        if (hasPrefix(format, prefix)) {
+            completions.add(format);
+        }
+    }
+}
+
+Args::Flag Args::Flag::mkHashFormatFlagWithDefault(std::string &&longName, HashFormat * hf) {
+    assert(*hf == nix::HashFormat::SRI);
+    return Flag{
+            .longName = std::move(longName),
+            .description = "hash format ('base16', 'nix32', 'base64', 'sri'). Default: 'sri'",
+            .labels = {"hash-format"},
+            .handler = {[hf](std::string s) {
+                *hf = parseHashFormat(s);
+            }},
+            .completer = hashFormatCompleter,
+    };
+}
+
+Args::Flag Args::Flag::mkHashFormatOptFlag(std::string && longName, std::optional<HashFormat> * ohf) {
+    return Flag{
+            .longName = std::move(longName),
+            .description = "hash format ('base16', 'nix32', 'base64', 'sri').",
+            .labels = {"hash-format"},
+            .handler = {[ohf](std::string s) {
+                *ohf = std::optional<HashFormat>{parseHashFormat(s)};
+            }},
+            .completer = hashFormatCompleter,
+    };
+}
+
 static void hashAlgoCompleter(AddCompletions & completions, size_t index, std::string_view prefix)
 {
-    for (auto & type : hashAlgorithms)
+    for (auto & algo : hashAlgorithms)
-        if (hasPrefix(type, prefix))
+        if (hasPrefix(algo, prefix))
-            completions.add(type);
+            completions.add(algo);
 }
 
 Args::Flag Args::Flag::mkHashAlgoFlag(std::string && longName, HashAlgorithm * ha)

src/libutil/args.hh

@@ -15,6 +15,7 @@
 namespace nix {
 
 enum struct HashAlgorithm : char;
+enum struct HashFormat : int;
 
 class MultiCommand;
 
@@ -177,6 +178,8 @@ protected:
 
         static Flag mkHashAlgoFlag(std::string && longName, HashAlgorithm * ha);
         static Flag mkHashAlgoOptFlag(std::string && longName, std::optional<HashAlgorithm> * oha);
+        static Flag mkHashFormatFlagWithDefault(std::string && longName, HashFormat * hf);
+        static Flag mkHashFormatOptFlag(std::string && longName, std::optional<HashFormat> * ohf);
     };
 
     /**

src/libutil/hash.cc

@@ -27,8 +27,9 @@ static size_t regularHashSize(HashAlgorithm type) {
 }
 
 
-std::set<std::string> hashAlgorithms = {"md5", "sha1", "sha256", "sha512" };
+const std::set<std::string> hashAlgorithms = {"md5", "sha1", "sha256", "sha512" };
 
+const std::set<std::string> hashFormats = {"base64", "nix32", "base16", "sri" };
 
 Hash::Hash(HashAlgorithm algo) : algo(algo)
 {
@@ -81,7 +82,7 @@ static std::string printHash16(const Hash & hash)
 
 
 // omitted: E O U T
-const std::string base32Chars = "0123456789abcdfghijklmnpqrsvwxyz";
+const std::string nix32Chars = "0123456789abcdfghijklmnpqrsvwxyz";
 
 
 static std::string printHash32(const Hash & hash)
@@ -100,7 +101,7 @@ static std::string printHash32(const Hash & hash)
         unsigned char c =
             (hash.hash[i] >> j)
             | (i >= hash.hashSize - 1 ? 0 : hash.hash[i + 1] << (8 - j));
-        s.push_back(base32Chars[c & 0x1f]);
+        s.push_back(nix32Chars[c & 0x1f]);
     }
 
     return s;
@@ -110,7 +111,7 @@ static std::string printHash32(const Hash & hash)
 std::string printHash16or32(const Hash & hash)
 {
     assert(static_cast<char>(hash.algo));
-    return hash.to_string(hash.algo == HashAlgorithm::MD5 ? HashFormat::Base16 : HashFormat::Base32, false);
+    return hash.to_string(hash.algo == HashAlgorithm::MD5 ? HashFormat::Base16 : HashFormat::Nix32, false);
 }
 
 
@@ -125,7 +126,7 @@ std::string Hash::to_string(HashFormat hashFormat, bool includeAlgo) const
     case HashFormat::Base16:
         s += printHash16(*this);
         break;
-    case HashFormat::Base32:
+    case HashFormat::Nix32:
         s += printHash32(*this);
         break;
     case HashFormat::Base64:
@@ -230,8 +231,8 @@ Hash::Hash(std::string_view rest, HashAlgorithm algo, bool isSRI)
         for (unsigned int n = 0; n < rest.size(); ++n) {
             char c = rest[rest.size() - n - 1];
             unsigned char digit;
-            for (digit = 0; digit < base32Chars.size(); ++digit) /* !!! slow */
+            for (digit = 0; digit < nix32Chars.size(); ++digit) /* !!! slow */
-                if (base32Chars[digit] == c) break;
+                if (nix32Chars[digit] == c) break;
             if (digit >= 32)
                 throw BadHash("invalid base-32 hash '%s'", rest);
             unsigned int b = n * 5;
@@ -388,7 +389,11 @@ Hash compressHash(const Hash & hash, unsigned int newSize)
 std::optional<HashFormat> parseHashFormatOpt(std::string_view hashFormatName)
 {
     if (hashFormatName == "base16") return HashFormat::Base16;
-    if (hashFormatName == "base32") return HashFormat::Base32;
+    if (hashFormatName == "nix32") return HashFormat::Nix32;
+    if (hashFormatName == "base32") {
+        warn(R"("base32" is a deprecated alias for hash format "nix32".)");
+        return HashFormat::Nix32;
+    }
     if (hashFormatName == "base64") return HashFormat::Base64;
     if (hashFormatName == "sri") return HashFormat::SRI;
     return std::nullopt;
@@ -407,8 +412,8 @@ std::string_view printHashFormat(HashFormat HashFormat)
     switch (HashFormat) {
     case HashFormat::Base64:
         return "base64";
-    case HashFormat::Base32:
+    case HashFormat::Nix32:
-        return "base32";
+        return "nix32";
     case HashFormat::Base16:
         return "base16";
     case HashFormat::SRI:

src/libutil/hash.hh

@@ -20,9 +20,9 @@ const int sha1HashSize = 20;
 const int sha256HashSize = 32;
 const int sha512HashSize = 64;
 
-extern std::set<std::string> hashAlgorithms;
+extern const std::set<std::string> hashAlgorithms;
 
-extern const std::string base32Chars;
+extern const std::string nix32Chars;
 
 /**
  * @brief Enumeration representing the hash formats.
@@ -31,8 +31,8 @@ enum struct HashFormat : int {
     /// @brief Base 64 encoding.
     /// @see [IETF RFC 4648, section 4](https://datatracker.ietf.org/doc/html/rfc4648#section-4).
     Base64,
-    /// @brief Nix-specific base-32 encoding. @see base32Chars
+    /// @brief Nix-specific base-32 encoding. @see nix32Chars
-    Base32,
+    Nix32,
     /// @brief Lowercase hexadecimal encoding. @see base16Chars
     Base16,
     /// @brief "<hash algo>:<Base 64 hash>", format of the SRI integrity attribute.
@@ -40,6 +40,8 @@ enum struct HashFormat : int {
     SRI
 };
 
+extern const std::set<std::string> hashFormats;
+
 struct Hash
 {
     constexpr static size_t maxHashSize = 64;

src/libutil/references.cc

@@ -23,8 +23,8 @@ static void search(
     static bool isBase32[256];
     std::call_once(initialised, [](){
         for (unsigned int i = 0; i < 256; ++i) isBase32[i] = false;
-        for (unsigned int i = 0; i < base32Chars.size(); ++i)
+        for (unsigned int i = 0; i < nix32Chars.size(); ++i)
-            isBase32[(unsigned char) base32Chars[i]] = true;
+            isBase32[(unsigned char) nix32Chars[i]] = true;
     });
 
     for (size_t i = 0; i + refLength <= s.size(); ) {

src/nix-store/nix-store.cc

@@ -406,7 +406,7 @@ static void opQuery(Strings opFlags, Strings opArgs)
                     auto info = store->queryPathInfo(j);
                     if (query == qHash) {
                         assert(info->narHash.algo == HashAlgorithm::SHA256);
-                        cout << fmt("%s\n", info->narHash.to_string(HashFormat::Base32, true));
+                        cout << fmt("%s\n", info->narHash.to_string(HashFormat::Nix32, true));
                     } else if (query == qSize)
                         cout << fmt("%d\n", info->narSize);
                 }
@@ -769,8 +769,8 @@ static void opVerifyPath(Strings opFlags, Strings opArgs)
         if (current.first != info->narHash) {
             printError("path '%s' was modified! expected hash '%s', got '%s'",
                 store->printStorePath(path),
-                info->narHash.to_string(HashFormat::Base32, true),
+                info->narHash.to_string(HashFormat::Nix32, true),
-                current.first.to_string(HashFormat::Base32, true));
+                current.first.to_string(HashFormat::Nix32, true));
             status = 1;
         }
     }
@@ -898,7 +898,7 @@ static void opServe(Strings opFlags, Strings opArgs)
                         out << info->narSize // downloadSize
                             << info->narSize;
                         if (GET_PROTOCOL_MINOR(clientVersion) >= 4)
-                            out << info->narHash.to_string(HashFormat::Base32, true)
+                            out << info->narHash.to_string(HashFormat::Nix32, true)
                                 << renderContentAddress(info->ca)
                                 << info->sigs;
                     } catch (InvalidPath &) {

src/nix/hash.cc

@@ -39,7 +39,7 @@ struct CmdHashBase : Command
         addFlag({
             .longName = "base32",
             .description = "Print the hash in base-32 (Nix-specific) format.",
-            .handler = {&hashFormat, HashFormat::Base32},
+            .handler = {&hashFormat, HashFormat::Nix32},
         });
 
         addFlag({
@@ -120,7 +120,7 @@ struct CmdToBase : Command
     {
         return fmt("convert a hash to %s representation",
             hashFormat == HashFormat::Base16 ? "base-16" :
-            hashFormat == HashFormat::Base32 ? "base-32" :
+            hashFormat == HashFormat::Nix32 ? "base-32" :
             hashFormat == HashFormat::Base64 ? "base-64" :
             "SRI");
     }
@@ -143,24 +143,8 @@ struct CmdHashConvert : Command
     std::vector<std::string> hashStrings;
 
     CmdHashConvert(): to(HashFormat::SRI) {
-        addFlag({
+        addFlag(Args::Flag::mkHashFormatOptFlag("from", &from));
-            .longName = "from",
+        addFlag(Args::Flag::mkHashFormatFlagWithDefault("to", &to));
-            // TODO: List format choices. Maybe introduce a constant?
-            .description = "The format of the input hash.",
-            .labels = {"hash format"},
-            .handler = {[this](std::string str) {
-                from = parseHashFormat(str);
-            }},
-        });
-        addFlag({
-            .longName = "to",
-            // TODO: List format choices. Maybe introduce a constant?
-            .description = "The format of the output hash.",
-            .labels = {"hash format"},
-            .handler = {[this](std::string str) {
-                to = parseHashFormat(str);
-            }},
-        });
         addFlag(Args::Flag::mkHashAlgoOptFlag("algo", &algo));
         expectArgs({
            .label = "hashes",
@@ -170,7 +154,15 @@ struct CmdHashConvert : Command
 
     std::string description() override
     {
-        return "convert between different hash formats, e.g. base16, nix32, base64 and sri.";
+        std::string descr( "convert between different hash formats. Choose from: ");
+        auto iter = hashFormats.begin();
+        assert(iter != hashFormats.end());
+        descr += *iter++;
+        while (iter != hashFormats.end()) {
+            descr += ", " + *iter++;
+        }
+
+        return descr;
     }
 
     Category category() override { return catUtility; }
@@ -197,7 +189,7 @@ struct CmdHash : NixMultiCommand
                 {"file", []() { return make_ref<CmdHashBase>(FileIngestionMethod::Flat);; }},
                 {"path", []() { return make_ref<CmdHashBase>(FileIngestionMethod::Recursive); }},
                 {"to-base16", []() { return make_ref<CmdToBase>(HashFormat::Base16); }},
-                {"to-base32", []() { return make_ref<CmdToBase>(HashFormat::Base32); }},
+                {"to-base32", []() { return make_ref<CmdToBase>(HashFormat::Nix32); }},
                 {"to-base64", []() { return make_ref<CmdToBase>(HashFormat::Base64); }},
                 {"to-sri", []() { return make_ref<CmdToBase>(HashFormat::SRI); }},
           })
@@ -230,7 +222,7 @@ static int compatNixHash(int argc, char * * argv)
             printVersion("nix-hash");
         else if (*arg == "--flat") flat = true;
         else if (*arg == "--base16") hashFormat = HashFormat::Base16;
-        else if (*arg == "--base32") hashFormat = HashFormat::Base32;
+        else if (*arg == "--base32") hashFormat = HashFormat::Nix32;
         else if (*arg == "--base64") hashFormat = HashFormat::Base64;
         else if (*arg == "--sri") hashFormat = HashFormat::SRI;
         else if (*arg == "--truncate") truncate = true;
@@ -244,7 +236,7 @@ static int compatNixHash(int argc, char * * argv)
         }
         else if (*arg == "--to-base32") {
             op = opTo;
-            hashFormat = HashFormat::Base32;
+            hashFormat = HashFormat::Nix32;
         }
         else if (*arg == "--to-base64") {
             op = opTo;

src/nix/verify.cc

@@ -109,8 +109,8 @@ struct CmdVerify : StorePathsCommand
                         act2.result(resCorruptedPath, store->printStorePath(info->path));
                         printError("path '%s' was modified! expected hash '%s', got '%s'",
                             store->printStorePath(info->path),
-                            info->narHash.to_string(HashFormat::Base32, true),
+                            info->narHash.to_string(HashFormat::Nix32, true),
-                            hash.first.to_string(HashFormat::Base32, true));
+                            hash.first.to_string(HashFormat::Nix32, true));
                     }
                 }
 

tests/functional/hash.sh

@@ -163,7 +163,7 @@ try3() {
 
     sri=$(nix hash convert --algo "$1" --from base16 "$2")
     [ "$sri" = "$1-$4" ]
-    sri=$(nix hash convert --algo "$1" --from base32 "$3")
+    sri=$(nix hash convert --algo "$1" --from nix32 "$3")
     [ "$sri" = "$1-$4" ]
     sri=$(nix hash convert --algo "$1" --from base64 "$4")
     [ "$sri" = "$1-$4" ]
@@ -172,11 +172,11 @@ try3() {
     # Asserting input format fails.
     #
 
-    fail=$(nix hash convert --algo "$1" --from base32 "$2" 2>&1 || echo "exit: $?")
+    fail=$(nix hash convert --algo "$1" --from nix32 "$2" 2>&1 || echo "exit: $?")
     [[ "$fail" == "error: input hash"*"exit: 1" ]]
     fail=$(nix hash convert --algo "$1" --from base16 "$3" 2>&1 || echo "exit: $?")
     [[ "$fail" == "error: input hash"*"exit: 1" ]]
-    fail=$(nix hash convert --algo "$1" --from base32 "$4" 2>&1 || echo "exit: $?")
+    fail=$(nix hash convert --algo "$1" --from nix32 "$4" 2>&1 || echo "exit: $?")
     [[ "$fail" == "error: input hash"*"exit: 1" ]]
 
 }

tests/functional/lang/eval-okay-convertHash.err.exp

@@ -0,0 +1,108 @@
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".
+warning: "base32" is a deprecated alias for hash format "nix32".

tests/functional/lang/eval-okay-convertHash.exp

@@ -1 +1 @@
-{ hashesBase16 = [ "d41d8cd98f00b204e9800998ecf8427e" "6c69ee7f211c640419d5366cc076ae46" "bb3438fbabd460ea6dbd27d153e2233b" "da39a3ee5e6b4b0d3255bfef95601890afd80709" "cd54e8568c1b37cf1e5badb0779bcbf382212189" "6d12e10b1d331dad210e47fd25d4f260802b7e77" "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" "900a4469df00ccbfd0c145c6d1e4b7953dd0afafadd7534e3a4019e8d38fc663" "ad0387b3bd8652f730ca46d25f9c170af0fd589f42e7f23f5a9e6412d97d7e56" "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e" "9d0886f8c6b389398a16257bc79780fab9831c7fc11c8ab07fa732cb7b348feade382f92617c9c5305fefba0af02ab5fd39a587d330997ff5bd0db19f7666653" "21644b72aa259e5a588cd3afbafb1d4310f4889680f6c83b9d531596a5a284f34dbebff409d23bcc86aee6bad10c891606f075c6f4755cb536da27db5693f3a7" ]; hashesBase32 = [ "3y8bwfr609h3lh9ch0izcqq7fl" "26mrvc0v1nslch8r0w45zywsbc" "1v4gi57l97pmnylq6lmgxkhd5v" "143xibwh31h9bvxzalr0sjvbbvpa6ffs" "i4hj30pkrfdpgc5dbcgcydqviibfhm6d" "fxz2p030yba2bza71qhss79k3l5y24kd" "0mdqa9w1p6cmli6976v4wi0sw9r4p5prkj7lzfd1877wk11c9c73" "0qy6iz9yh6a079757mxdmypx0gcmnzjd3ij5q78bzk00vxll82lh" "0mkygpci4r4yb8zz5rs2kxcgvw0a2yf5zlj6r8qgfll6pnrqf0xd" "0zdl9zrg8r3i9c1g90lgg9ip5ijzv3yhz91i0zzn3r8ap9ws784gkp9dk9j3aglhgf1amqb0pj21mh7h1nxcl18akqvvf7ggqsy30yg" "19ncrpp37dx0nzzjw4k6zaqkb9mzaq2myhgpzh5aff7qqcj5wwdxslg6ixwncm7gyq8l761gwf87fgsh2bwfyr52s53k2dkqvw8c24x" "2kz74snvckxldmmbisz9ikmy031d28cs6xfdbl6rhxx42glpyz4vww4lajrc5akklxwixl0js4g84233pxvmbykiic5m7i5m9r4nr11" ]; hashesBase64 = [ "1B2M2Y8AsgTpgAmY7PhCfg==" "bGnufyEcZAQZ1TZswHauRg==" "uzQ4+6vUYOptvSfRU+IjOw==" "2jmj7l5rSw0yVb/vlWAYkK/YBwk=" "zVToVowbN88eW62wd5vL84IhIYk=" "bRLhCx0zHa0hDkf9JdTyYIArfnc=" "47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=" "kApEad8AzL/QwUXG0eS3lT3Qr6+t11NOOkAZ6NOPxmM=" "rQOHs72GUvcwykbSX5wXCvD9WJ9C5/I/Wp5kEtl9flY=" "z4PhNX7vuL3xVChQ1m2AB9Yg5AULVxXcg/SpIdNs6c5H0NE8XYXysP+DGNKHfuwvY7kxvUdBeoGlODJ6+SfaPg==" "nQiG+MaziTmKFiV7x5eA+rmDHH/BHIqwf6cyy3s0j+reOC+SYXycUwX++6CvAqtf05pYfTMJl/9b0NsZ92ZmUw==" "IWRLcqolnlpYjNOvuvsdQxD0iJaA9sg7nVMVlqWihPNNvr/0CdI7zIau5rrRDIkWBvB1xvR1XLU22ifbVpPzpw==" ]; hashesSRI = [ "md5-1B2M2Y8AsgTpgAmY7PhCfg==" "md5-bGnufyEcZAQZ1TZswHauRg==" "md5-uzQ4+6vUYOptvSfRU+IjOw==" "sha1-2jmj7l5rSw0yVb/vlWAYkK/YBwk=" "sha1-zVToVowbN88eW62wd5vL84IhIYk=" "sha1-bRLhCx0zHa0hDkf9JdTyYIArfnc=" "sha256-47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=" "sha256-kApEad8AzL/QwUXG0eS3lT3Qr6+t11NOOkAZ6NOPxmM=" "sha256-rQOHs72GUvcwykbSX5wXCvD9WJ9C5/I/Wp5kEtl9flY=" "sha512-z4PhNX7vuL3xVChQ1m2AB9Yg5AULVxXcg/SpIdNs6c5H0NE8XYXysP+DGNKHfuwvY7kxvUdBeoGlODJ6+SfaPg==" "sha512-nQiG+MaziTmKFiV7x5eA+rmDHH/BHIqwf6cyy3s0j+reOC+SYXycUwX++6CvAqtf05pYfTMJl/9b0NsZ92ZmUw==" "sha512-IWRLcqolnlpYjNOvuvsdQxD0iJaA9sg7nVMVlqWihPNNvr/0CdI7zIau5rrRDIkWBvB1xvR1XLU22ifbVpPzpw==" ]; }
+{ hashesBase16 = [ "d41d8cd98f00b204e9800998ecf8427e" "6c69ee7f211c640419d5366cc076ae46" "bb3438fbabd460ea6dbd27d153e2233b" "da39a3ee5e6b4b0d3255bfef95601890afd80709" "cd54e8568c1b37cf1e5badb0779bcbf382212189" "6d12e10b1d331dad210e47fd25d4f260802b7e77" "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855" "900a4469df00ccbfd0c145c6d1e4b7953dd0afafadd7534e3a4019e8d38fc663" "ad0387b3bd8652f730ca46d25f9c170af0fd589f42e7f23f5a9e6412d97d7e56" "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e" "9d0886f8c6b389398a16257bc79780fab9831c7fc11c8ab07fa732cb7b348feade382f92617c9c5305fefba0af02ab5fd39a587d330997ff5bd0db19f7666653" "21644b72aa259e5a588cd3afbafb1d4310f4889680f6c83b9d531596a5a284f34dbebff409d23bcc86aee6bad10c891606f075c6f4755cb536da27db5693f3a7" ]; hashesBase32 = [ "3y8bwfr609h3lh9ch0izcqq7fl" "26mrvc0v1nslch8r0w45zywsbc" "1v4gi57l97pmnylq6lmgxkhd5v" "143xibwh31h9bvxzalr0sjvbbvpa6ffs" "i4hj30pkrfdpgc5dbcgcydqviibfhm6d" "fxz2p030yba2bza71qhss79k3l5y24kd" "0mdqa9w1p6cmli6976v4wi0sw9r4p5prkj7lzfd1877wk11c9c73" "0qy6iz9yh6a079757mxdmypx0gcmnzjd3ij5q78bzk00vxll82lh" "0mkygpci4r4yb8zz5rs2kxcgvw0a2yf5zlj6r8qgfll6pnrqf0xd" "0zdl9zrg8r3i9c1g90lgg9ip5ijzv3yhz91i0zzn3r8ap9ws784gkp9dk9j3aglhgf1amqb0pj21mh7h1nxcl18akqvvf7ggqsy30yg" "19ncrpp37dx0nzzjw4k6zaqkb9mzaq2myhgpzh5aff7qqcj5wwdxslg6ixwncm7gyq8l761gwf87fgsh2bwfyr52s53k2dkqvw8c24x" "2kz74snvckxldmmbisz9ikmy031d28cs6xfdbl6rhxx42glpyz4vww4lajrc5akklxwixl0js4g84233pxvmbykiic5m7i5m9r4nr11" ]; hashesBase64 = [ "1B2M2Y8AsgTpgAmY7PhCfg==" "bGnufyEcZAQZ1TZswHauRg==" "uzQ4+6vUYOptvSfRU+IjOw==" "2jmj7l5rSw0yVb/vlWAYkK/YBwk=" "zVToVowbN88eW62wd5vL84IhIYk=" "bRLhCx0zHa0hDkf9JdTyYIArfnc=" "47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=" "kApEad8AzL/QwUXG0eS3lT3Qr6+t11NOOkAZ6NOPxmM=" "rQOHs72GUvcwykbSX5wXCvD9WJ9C5/I/Wp5kEtl9flY=" "z4PhNX7vuL3xVChQ1m2AB9Yg5AULVxXcg/SpIdNs6c5H0NE8XYXysP+DGNKHfuwvY7kxvUdBeoGlODJ6+SfaPg==" "nQiG+MaziTmKFiV7x5eA+rmDHH/BHIqwf6cyy3s0j+reOC+SYXycUwX++6CvAqtf05pYfTMJl/9b0NsZ92ZmUw==" "IWRLcqolnlpYjNOvuvsdQxD0iJaA9sg7nVMVlqWihPNNvr/0CdI7zIau5rrRDIkWBvB1xvR1XLU22ifbVpPzpw==" ]; hashesNix32 = [ "3y8bwfr609h3lh9ch0izcqq7fl" "26mrvc0v1nslch8r0w45zywsbc" "1v4gi57l97pmnylq6lmgxkhd5v" "143xibwh31h9bvxzalr0sjvbbvpa6ffs" "i4hj30pkrfdpgc5dbcgcydqviibfhm6d" "fxz2p030yba2bza71qhss79k3l5y24kd" "0mdqa9w1p6cmli6976v4wi0sw9r4p5prkj7lzfd1877wk11c9c73" "0qy6iz9yh6a079757mxdmypx0gcmnzjd3ij5q78bzk00vxll82lh" "0mkygpci4r4yb8zz5rs2kxcgvw0a2yf5zlj6r8qgfll6pnrqf0xd" "0zdl9zrg8r3i9c1g90lgg9ip5ijzv3yhz91i0zzn3r8ap9ws784gkp9dk9j3aglhgf1amqb0pj21mh7h1nxcl18akqvvf7ggqsy30yg" "19ncrpp37dx0nzzjw4k6zaqkb9mzaq2myhgpzh5aff7qqcj5wwdxslg6ixwncm7gyq8l761gwf87fgsh2bwfyr52s53k2dkqvw8c24x" "2kz74snvckxldmmbisz9ikmy031d28cs6xfdbl6rhxx42glpyz4vww4lajrc5akklxwixl0js4g84233pxvmbykiic5m7i5m9r4nr11" ]; hashesSRI = [ "md5-1B2M2Y8AsgTpgAmY7PhCfg==" "md5-bGnufyEcZAQZ1TZswHauRg==" "md5-uzQ4+6vUYOptvSfRU+IjOw==" "sha1-2jmj7l5rSw0yVb/vlWAYkK/YBwk=" "sha1-zVToVowbN88eW62wd5vL84IhIYk=" "sha1-bRLhCx0zHa0hDkf9JdTyYIArfnc=" "sha256-47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU=" "sha256-kApEad8AzL/QwUXG0eS3lT3Qr6+t11NOOkAZ6NOPxmM=" "sha256-rQOHs72GUvcwykbSX5wXCvD9WJ9C5/I/Wp5kEtl9flY=" "sha512-z4PhNX7vuL3xVChQ1m2AB9Yg5AULVxXcg/SpIdNs6c5H0NE8XYXysP+DGNKHfuwvY7kxvUdBeoGlODJ6+SfaPg==" "sha512-nQiG+MaziTmKFiV7x5eA+rmDHH/BHIqwf6cyy3s0j+reOC+SYXycUwX++6CvAqtf05pYfTMJl/9b0NsZ92ZmUw==" "sha512-IWRLcqolnlpYjNOvuvsdQxD0iJaA9sg7nVMVlqWihPNNvr/0CdI7zIau5rrRDIkWBvB1xvR1XLU22ifbVpPzpw==" ]; }

tests/functional/lang/eval-okay-convertHash.nix

@@ -5,12 +5,14 @@ let
   map2' = f: fsts: snds: map2 f { inherit fsts snds; };
   getOutputHashes = hashes: {
     hashesBase16 = map2' (hashAlgo: hash: builtins.convertHash { inherit hash hashAlgo; toHashFormat = "base16";}) hashAlgos hashes;
+    hashesNix32 = map2' (hashAlgo: hash: builtins.convertHash { inherit hash hashAlgo; toHashFormat = "nix32";}) hashAlgos hashes;
     hashesBase32 = map2' (hashAlgo: hash: builtins.convertHash { inherit hash hashAlgo; toHashFormat = "base32";}) hashAlgos hashes;
     hashesBase64 = map2' (hashAlgo: hash: builtins.convertHash { inherit hash hashAlgo; toHashFormat = "base64";}) hashAlgos hashes;
     hashesSRI    = map2' (hashAlgo: hash: builtins.convertHash { inherit hash hashAlgo; toHashFormat = "sri"   ;}) hashAlgos hashes;
   };
   getOutputHashesColon = hashes: {
     hashesBase16 = map2' (hashAlgo: hashBody: builtins.convertHash { hash = hashAlgo + ":" + hashBody; toHashFormat = "base16";}) hashAlgos hashes;
+    hashesNix32 = map2' (hashAlgo: hashBody: builtins.convertHash { hash = hashAlgo + ":" + hashBody; toHashFormat = "nix32";}) hashAlgos hashes;
     hashesBase32 = map2' (hashAlgo: hashBody: builtins.convertHash { hash = hashAlgo + ":" + hashBody; toHashFormat = "base32";}) hashAlgos hashes;
     hashesBase64 = map2' (hashAlgo: hashBody: builtins.convertHash { hash = hashAlgo + ":" + hashBody; toHashFormat = "base64";}) hashAlgos hashes;
     hashesSRI    = map2' (hashAlgo: hashBody: builtins.convertHash { hash = hashAlgo + ":" + hashBody; toHashFormat = "sri"   ;}) hashAlgos hashes;

tests/unit/libutil/hash.cc

@@ -80,7 +80,7 @@ namespace nix {
      * --------------------------------------------------------------------------*/
 
     TEST(hashFormat, testRoundTripPrintParse) {
-        for (const HashFormat hashFormat: { HashFormat::Base64, HashFormat::Base32, HashFormat::Base16, HashFormat::SRI}) {
+        for (const HashFormat hashFormat: { HashFormat::Base64, HashFormat::Nix32, HashFormat::Base16, HashFormat::SRI}) {
             ASSERT_EQ(parseHashFormat(printHashFormat(hashFormat)), hashFormat);
             ASSERT_EQ(*parseHashFormatOpt(printHashFormat(hashFormat)), hashFormat);
         }