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-rw-r--r--src/libfetchers/fetchers.cc11
-rw-r--r--src/libfetchers/fetchers.hh16
-rw-r--r--src/libfetchers/git.cc57
-rw-r--r--src/libfetchers/github.cc21
-rw-r--r--src/libfetchers/indirect.cc140
-rw-r--r--src/libfetchers/mercurial.cc35
-rw-r--r--src/libfetchers/path.cc24
-rw-r--r--src/libfetchers/registry.cc222
-rw-r--r--src/libfetchers/registry.hh65
-rw-r--r--src/libfetchers/tree-info.cc46
-rw-r--r--src/libfetchers/tree-info.hh4
11 files changed, 640 insertions, 1 deletions
diff --git a/src/libfetchers/fetchers.cc b/src/libfetchers/fetchers.cc
index 94ac30e38..83268b4bf 100644
--- a/src/libfetchers/fetchers.cc
+++ b/src/libfetchers/fetchers.cc
@@ -72,4 +72,15 @@ std::pair<Tree, std::shared_ptr<const Input>> Input::fetchTree(ref<Store> store)
return {std::move(tree), input};
}
+std::shared_ptr<const Input> Input::applyOverrides(
+ std::optional<std::string> ref,
+ std::optional<Hash> rev) const
+{
+ if (ref)
+ throw Error("don't know how to apply '%s' to '%s'", *ref, to_string());
+ if (rev)
+ throw Error("don't know how to apply '%s' to '%s'", rev->to_string(Base16, false), to_string());
+ return shared_from_this();
+}
+
}
diff --git a/src/libfetchers/fetchers.hh b/src/libfetchers/fetchers.hh
index 59a58ae67..b75dcffa5 100644
--- a/src/libfetchers/fetchers.hh
+++ b/src/libfetchers/fetchers.hh
@@ -57,6 +57,22 @@ struct Input : std::enable_shared_from_this<Input>
std::pair<Tree, std::shared_ptr<const Input>> fetchTree(ref<Store> store) const;
+ virtual std::shared_ptr<const Input> applyOverrides(
+ std::optional<std::string> ref,
+ std::optional<Hash> rev) const;
+
+ virtual std::optional<Path> getSourcePath() const { return {}; }
+
+ virtual void markChangedFile(
+ std::string_view file,
+ std::optional<std::string> commitMsg) const
+ { assert(false); }
+
+ virtual void clone(const Path & destDir) const
+ {
+ throw Error("do not know how to clone input '%s'", to_string());
+ }
+
private:
virtual std::pair<Tree, std::shared_ptr<const Input>> fetchTreeInternal(ref<Store> store) const = 0;
diff --git a/src/libfetchers/git.cc b/src/libfetchers/git.cc
index 7c18cf67f..210e29193 100644
--- a/src/libfetchers/git.cc
+++ b/src/libfetchers/git.cc
@@ -79,6 +79,63 @@ struct GitInput : Input
return attrs;
}
+ void clone(const Path & destDir) const override
+ {
+ auto [isLocal, actualUrl] = getActualUrl();
+
+ Strings args = {"clone"};
+
+ args.push_back(actualUrl);
+
+ if (ref) {
+ args.push_back("--branch");
+ args.push_back(*ref);
+ }
+
+ if (rev) throw Error("cloning a specific revision is not implemented");
+
+ args.push_back(destDir);
+
+ runProgram("git", true, args);
+ }
+
+ std::shared_ptr<const Input> applyOverrides(
+ std::optional<std::string> ref,
+ std::optional<Hash> rev) const override
+ {
+ if (!ref && !rev) return shared_from_this();
+
+ auto res = std::make_shared<GitInput>(*this);
+
+ if (ref) res->ref = ref;
+ if (rev) res->rev = rev;
+
+ if (!res->ref && res->rev)
+ throw Error("Git input '%s' has a commit hash but no branch/tag name", res->to_string());
+
+ return res;
+ }
+
+ std::optional<Path> getSourcePath() const override
+ {
+ if (url.scheme == "file" && !ref && !rev)
+ return url.path;
+ return {};
+ }
+
+ void markChangedFile(std::string_view file, std::optional<std::string> commitMsg) const override
+ {
+ auto sourcePath = getSourcePath();
+ assert(sourcePath);
+
+ runProgram("git", true,
+ { "-C", *sourcePath, "add", "--force", "--intent-to-add", std::string(file) });
+
+ if (commitMsg)
+ runProgram("git", true,
+ { "-C", *sourcePath, "commit", std::string(file), "-m", *commitMsg });
+ }
+
std::pair<bool, std::string> getActualUrl() const
{
// Don't clone file:// URIs (but otherwise treat them the
diff --git a/src/libfetchers/github.cc b/src/libfetchers/github.cc
index 8675a5a66..c01917dcc 100644
--- a/src/libfetchers/github.cc
+++ b/src/libfetchers/github.cc
@@ -64,6 +64,13 @@ struct GitHubInput : Input
return attrs;
}
+ void clone(const Path & destDir) const override
+ {
+ std::shared_ptr<const Input> input = inputFromURL(fmt("git+ssh://git@github.com/%s/%s.git", owner, repo));
+ input = input->applyOverrides(ref.value_or("master"), rev);
+ input->clone(destDir);
+ }
+
std::pair<Tree, std::shared_ptr<const Input>> fetchTreeInternal(nix::ref<Store> store) const override
{
auto rev = this->rev;
@@ -126,6 +133,20 @@ struct GitHubInput : Input
return {std::move(tree), input};
}
+
+ std::shared_ptr<const Input> applyOverrides(
+ std::optional<std::string> ref,
+ std::optional<Hash> rev) const override
+ {
+ if (!ref && !rev) return shared_from_this();
+
+ auto res = std::make_shared<GitHubInput>(*this);
+
+ if (ref) res->ref = ref;
+ if (rev) res->rev = rev;
+
+ return res;
+ }
};
struct GitHubInputScheme : InputScheme
diff --git a/src/libfetchers/indirect.cc b/src/libfetchers/indirect.cc
new file mode 100644
index 000000000..380b69fe0
--- /dev/null
+++ b/src/libfetchers/indirect.cc
@@ -0,0 +1,140 @@
+#include "fetchers.hh"
+
+namespace nix::fetchers {
+
+std::regex flakeRegex("[a-zA-Z][a-zA-Z0-9_-]*", std::regex::ECMAScript);
+
+struct IndirectInput : Input
+{
+ std::string id;
+ std::optional<Hash> rev;
+ std::optional<std::string> ref;
+
+ std::string type() const override { return "indirect"; }
+
+ bool operator ==(const Input & other) const override
+ {
+ auto other2 = dynamic_cast<const IndirectInput *>(&other);
+ return
+ other2
+ && id == other2->id
+ && rev == other2->rev
+ && ref == other2->ref;
+ }
+
+ bool isDirect() const override
+ {
+ return false;
+ }
+
+ std::optional<std::string> getRef() const override { return ref; }
+
+ std::optional<Hash> getRev() const override { return rev; }
+
+ bool contains(const Input & other) const override
+ {
+ auto other2 = dynamic_cast<const IndirectInput *>(&other);
+ return
+ other2
+ && id == other2->id
+ && (!ref || ref == other2->ref)
+ && (!rev || rev == other2->rev);
+ }
+
+ ParsedURL toURL() const override
+ {
+ ParsedURL url;
+ url.scheme = "flake";
+ url.path = id;
+ if (ref) { url.path += '/'; url.path += *ref; };
+ if (rev) { url.path += '/'; url.path += rev->gitRev(); };
+ return url;
+ }
+
+ Attrs toAttrsInternal() const override
+ {
+ Attrs attrs;
+ attrs.emplace("id", id);
+ if (ref)
+ attrs.emplace("ref", *ref);
+ if (rev)
+ attrs.emplace("rev", rev->gitRev());
+ return attrs;
+ }
+
+ std::shared_ptr<const Input> applyOverrides(
+ std::optional<std::string> ref,
+ std::optional<Hash> rev) const override
+ {
+ if (!ref && !rev) return shared_from_this();
+
+ auto res = std::make_shared<IndirectInput>(*this);
+
+ if (ref) res->ref = ref;
+ if (rev) res->rev = rev;
+
+ return res;
+ }
+
+ std::pair<Tree, std::shared_ptr<const Input>> fetchTreeInternal(nix::ref<Store> store) const override
+ {
+ throw Error("indirect input '%s' cannot be fetched directly", to_string());
+ }
+};
+
+struct IndirectInputScheme : InputScheme
+{
+ std::unique_ptr<Input> inputFromURL(const ParsedURL & url) override
+ {
+ if (url.scheme != "flake") return nullptr;
+
+ auto path = tokenizeString<std::vector<std::string>>(url.path, "/");
+ auto input = std::make_unique<IndirectInput>();
+
+ if (path.size() == 1) {
+ } else if (path.size() == 2) {
+ if (std::regex_match(path[1], revRegex))
+ input->rev = Hash(path[1], htSHA1);
+ else if (std::regex_match(path[1], refRegex))
+ input->ref = path[1];
+ else
+ throw BadURL("in flake URL '%s', '%s' is not a commit hash or branch/tag name", url.url, path[1]);
+ } else if (path.size() == 3) {
+ if (!std::regex_match(path[1], refRegex))
+ throw BadURL("in flake URL '%s', '%s' is not a branch/tag name", url.url, path[1]);
+ input->ref = path[1];
+ if (!std::regex_match(path[2], revRegex))
+ throw BadURL("in flake URL '%s', '%s' is not a commit hash", url.url, path[2]);
+ input->rev = Hash(path[2], htSHA1);
+ } else
+ throw BadURL("GitHub URL '%s' is invalid", url.url);
+
+ // FIXME: forbid query params?
+
+ input->id = path[0];
+ if (!std::regex_match(input->id, flakeRegex))
+ throw BadURL("'%s' is not a valid flake ID", input->id);
+
+ return input;
+ }
+
+ std::unique_ptr<Input> inputFromAttrs(const Attrs & attrs) override
+ {
+ if (maybeGetStrAttr(attrs, "type") != "indirect") return {};
+
+ for (auto & [name, value] : attrs)
+ if (name != "type" && name != "id" && name != "ref" && name != "rev")
+ throw Error("unsupported indirect input attribute '%s'", name);
+
+ auto input = std::make_unique<IndirectInput>();
+ input->id = getStrAttr(attrs, "id");
+ input->ref = maybeGetStrAttr(attrs, "ref");
+ if (auto rev = maybeGetStrAttr(attrs, "rev"))
+ input->rev = Hash(*rev, htSHA1);
+ return input;
+ }
+};
+
+static auto r1 = OnStartup([] { registerInputScheme(std::make_unique<IndirectInputScheme>()); });
+
+}
diff --git a/src/libfetchers/mercurial.cc b/src/libfetchers/mercurial.cc
index 1d6571571..5abb00172 100644
--- a/src/libfetchers/mercurial.cc
+++ b/src/libfetchers/mercurial.cc
@@ -60,6 +60,41 @@ struct MercurialInput : Input
return attrs;
}
+ std::shared_ptr<const Input> applyOverrides(
+ std::optional<std::string> ref,
+ std::optional<Hash> rev) const override
+ {
+ if (!ref && !rev) return shared_from_this();
+
+ auto res = std::make_shared<MercurialInput>(*this);
+
+ if (ref) res->ref = ref;
+ if (rev) res->rev = rev;
+
+ return res;
+ }
+
+ std::optional<Path> getSourcePath() const
+ {
+ if (url.scheme == "file" && !ref && !rev)
+ return url.path;
+ return {};
+ }
+
+ void markChangedFile(std::string_view file, std::optional<std::string> commitMsg) const override
+ {
+ auto sourcePath = getSourcePath();
+ assert(sourcePath);
+
+ // FIXME: shut up if file is already tracked.
+ runProgram("hg", true,
+ { "add", *sourcePath + "/" + std::string(file) });
+
+ if (commitMsg)
+ runProgram("hg", true,
+ { "commit", *sourcePath + "/" + std::string(file), "-m", *commitMsg });
+ }
+
std::pair<bool, std::string> getActualUrl() const
{
bool isLocal = url.scheme == "file";
diff --git a/src/libfetchers/path.cc b/src/libfetchers/path.cc
index ba2cc192e..77fe87d59 100644
--- a/src/libfetchers/path.cc
+++ b/src/libfetchers/path.cc
@@ -32,7 +32,7 @@ struct PathInput : Input
bool isImmutable() const override
{
- return (bool) narHash;
+ return narHash || rev;
}
ParsedURL toURL() const override
@@ -56,9 +56,20 @@ struct PathInput : Input
attrs.emplace("revCount", *revCount);
if (lastModified)
attrs.emplace("lastModified", *lastModified);
+ if (!rev && narHash)
+ attrs.emplace("narHash", narHash->to_string(SRI));
return attrs;
}
+ std::optional<Path> getSourcePath() const override
+ {
+ return path;
+ }
+
+ void markChangedFile(std::string_view file, std::optional<std::string> commitMsg) const override
+ {
+ }
+
std::pair<Tree, std::shared_ptr<const Input>> fetchTreeInternal(nix::ref<Store> store) const override
{
auto input = std::make_shared<PathInput>(*this);
@@ -74,6 +85,8 @@ struct PathInput : Input
// FIXME: try to substitute storePath.
storePath = store->addToStore("source", path);
+ input->narHash = store->queryPathInfo(*storePath)->narHash;
+
return
{
Tree {
@@ -99,6 +112,9 @@ struct PathInputScheme : InputScheme
auto input = std::make_unique<PathInput>();
input->path = url.path;
+ if (url.authority && *url.authority != "")
+ throw Error("path URL '%s' should not have an authority ('%s')", url.url, *url.authority);
+
for (auto & [name, value] : url.query)
if (name == "rev")
input->rev = Hash(value, htSHA1);
@@ -114,6 +130,9 @@ struct PathInputScheme : InputScheme
throw Error("path URL '%s' has invalid parameter '%s'", url.to_string(), name);
input->lastModified = lastModified;
}
+ else if (name == "narHash")
+ // FIXME: require SRI hash.
+ input->narHash = Hash(value);
else
throw Error("path URL '%s' has unsupported parameter '%s'", url.to_string(), name);
@@ -134,6 +153,9 @@ struct PathInputScheme : InputScheme
input->revCount = getIntAttr(attrs, "revCount");
else if (name == "lastModified")
input->lastModified = getIntAttr(attrs, "lastModified");
+ else if (name == "narHash")
+ // FIXME: require SRI hash.
+ input->narHash = Hash(getStrAttr(attrs, "narHash"));
else if (name == "type" || name == "path")
;
else
diff --git a/src/libfetchers/registry.cc b/src/libfetchers/registry.cc
new file mode 100644
index 000000000..77d3b3378
--- /dev/null
+++ b/src/libfetchers/registry.cc
@@ -0,0 +1,222 @@
+#include "registry.hh"
+#include "fetchers.hh"
+#include "util.hh"
+#include "globals.hh"
+#include "store-api.hh"
+
+#include <nlohmann/json.hpp>
+
+namespace nix::fetchers {
+
+std::shared_ptr<Registry> Registry::read(
+ const Path & path, RegistryType type)
+{
+ auto registry = std::make_shared<Registry>(type);
+
+ if (!pathExists(path))
+ return std::make_shared<Registry>(type);
+
+ try {
+
+ auto json = nlohmann::json::parse(readFile(path));
+
+ auto version = json.value("version", 0);
+
+ // FIXME: remove soon
+ if (version == 1) {
+ auto flakes = json["flakes"];
+ for (auto i = flakes.begin(); i != flakes.end(); ++i) {
+ auto url = i->value("url", i->value("uri", ""));
+ if (url.empty())
+ throw Error("flake registry '%s' lacks a 'url' attribute for entry '%s'",
+ path, i.key());
+ registry->entries.push_back(
+ {inputFromURL(i.key()), inputFromURL(url), {}});
+ }
+ }
+
+ else if (version == 2) {
+ for (auto & i : json["flakes"]) {
+ auto toAttrs = jsonToAttrs(i["to"]);
+ Attrs extraAttrs;
+ auto j = toAttrs.find("dir");
+ if (j != toAttrs.end()) {
+ extraAttrs.insert(*j);
+ toAttrs.erase(j);
+ }
+ auto exact = i.find("exact");
+ registry->entries.push_back(
+ Entry {
+ .from = inputFromAttrs(jsonToAttrs(i["from"])),
+ .to = inputFromAttrs(toAttrs),
+ .extraAttrs = extraAttrs,
+ .exact = exact != i.end() && exact.value()
+ });
+ }
+ }
+
+ else
+ throw Error("flake registry '%s' has unsupported version %d", path, version);
+
+ } catch (nlohmann::json::exception & e) {
+ warn("cannot parse flake registry '%s': %s", path, e.what());
+ } catch (Error & e) {
+ warn("cannot read flake registry '%s': %s", path, e.what());
+ }
+
+ return registry;
+}
+
+void Registry::write(const Path & path)
+{
+ nlohmann::json arr;
+ for (auto & entry : entries) {
+ nlohmann::json obj;
+ obj["from"] = attrsToJson(entry.from->toAttrs());
+ obj["to"] = attrsToJson(entry.to->toAttrs());
+ if (!entry.extraAttrs.empty())
+ obj["to"].update(attrsToJson(entry.extraAttrs));
+ if (entry.exact)
+ obj["exact"] = true;
+ arr.emplace_back(std::move(obj));
+ }
+
+ nlohmann::json json;
+ json["version"] = 2;
+ json["flakes"] = std::move(arr);
+
+ createDirs(dirOf(path));
+ writeFile(path, json.dump(2));
+}
+
+void Registry::add(
+ const std::shared_ptr<const Input> & from,
+ const std::shared_ptr<const Input> & to,
+ const Attrs & extraAttrs)
+{
+ entries.emplace_back(
+ Entry {
+ .from = from,
+ .to = to,
+ .extraAttrs = extraAttrs
+ });
+}
+
+void Registry::remove(const std::shared_ptr<const Input> & input)
+{
+ // FIXME: use C++20 std::erase.
+ for (auto i = entries.begin(); i != entries.end(); )
+ if (*i->from == *input)
+ i = entries.erase(i);
+ else
+ ++i;
+}
+
+static Path getSystemRegistryPath()
+{
+ return settings.nixConfDir + "/registry.json";
+}
+
+static std::shared_ptr<Registry> getSystemRegistry()
+{
+ static auto systemRegistry =
+ Registry::read(getSystemRegistryPath(), Registry::System);
+ return systemRegistry;
+}
+
+Path getUserRegistryPath()
+{
+ return getHome() + "/.config/nix/registry.json";
+}
+
+std::shared_ptr<Registry> getUserRegistry()
+{
+ static auto userRegistry =
+ Registry::read(getUserRegistryPath(), Registry::User);
+ return userRegistry;
+}
+
+static std::shared_ptr<Registry> flagRegistry =
+ std::make_shared<Registry>(Registry::Flag);
+
+std::shared_ptr<Registry> getFlagRegistry()
+{
+ return flagRegistry;
+}
+
+void overrideRegistry(
+ const std::shared_ptr<const Input> & from,
+ const std::shared_ptr<const Input> & to,
+ const Attrs & extraAttrs)
+{
+ flagRegistry->add(from, to, extraAttrs);
+}
+
+static std::shared_ptr<Registry> getGlobalRegistry(ref<Store> store)
+{
+ static auto reg = [&]() {
+ auto path = settings.flakeRegistry;
+
+ if (!hasPrefix(path, "/")) {
+ auto storePath = downloadFile(store, path, "flake-registry.json", false).storePath;
+ if (auto store2 = store.dynamic_pointer_cast<LocalFSStore>())
+ store2->addPermRoot(storePath, getCacheDir() + "/nix/flake-registry.json", true);
+ path = store->toRealPath(storePath);
+ }
+
+ return Registry::read(path, Registry::Global);
+ }();
+
+ return reg;
+}
+
+Registries getRegistries(ref<Store> store)
+{
+ Registries registries;
+ registries.push_back(getFlagRegistry());
+ registries.push_back(getUserRegistry());
+ registries.push_back(getSystemRegistry());
+ registries.push_back(getGlobalRegistry(store));
+ return registries;
+}
+
+std::pair<std::shared_ptr<const Input>, Attrs> lookupInRegistries(
+ ref<Store> store,
+ std::shared_ptr<const Input> input)
+{
+ Attrs extraAttrs;
+ int n = 0;
+
+ restart:
+
+ n++;
+ if (n > 100) throw Error("cycle detected in flake registr for '%s'", input);
+
+ for (auto & registry : getRegistries(store)) {
+ // FIXME: O(n)
+ for (auto & entry : registry->entries) {
+ if (entry.exact) {
+ if (*entry.from == *input) {
+ input = entry.to;
+ extraAttrs = entry.extraAttrs;
+ goto restart;
+ }
+ } else {
+ if (entry.from->contains(*input)) {
+ input = entry.to->applyOverrides(
+ !entry.from->getRef() && input->getRef() ? input->getRef() : std::optional<std::string>(),
+ !entry.from->getRev() && input->getRev() ? input->getRev() : std::optional<Hash>());
+ extraAttrs = entry.extraAttrs;
+ goto restart;
+ }
+ }
+ }
+ }
+
+ if (!input->isDirect())
+ throw Error("cannot find flake '%s' in the flake registries", input->to_string());
+
+ return {input, extraAttrs};
+}
+
+}
diff --git a/src/libfetchers/registry.hh b/src/libfetchers/registry.hh
new file mode 100644
index 000000000..c3ce948a8
--- /dev/null
+++ b/src/libfetchers/registry.hh
@@ -0,0 +1,65 @@
+#pragma once
+
+#include "types.hh"
+#include "fetchers.hh"
+
+namespace nix { class Store; }
+
+namespace nix::fetchers {
+
+struct Registry
+{
+ enum RegistryType {
+ Flag = 0,
+ User = 1,
+ System = 2,
+ Global = 3,
+ };
+
+ RegistryType type;
+
+ struct Entry
+ {
+ std::shared_ptr<const Input> from;
+ std::shared_ptr<const Input> to;
+ Attrs extraAttrs;
+ bool exact = false;
+ };
+
+ std::vector<Entry> entries;
+
+ Registry(RegistryType type)
+ : type(type)
+ { }
+
+ static std::shared_ptr<Registry> read(
+ const Path & path, RegistryType type);
+
+ void write(const Path & path);
+
+ void add(
+ const std::shared_ptr<const Input> & from,
+ const std::shared_ptr<const Input> & to,
+ const Attrs & extraAttrs);
+
+ void remove(const std::shared_ptr<const Input> & input);
+};
+
+typedef std::vector<std::shared_ptr<Registry>> Registries;
+
+std::shared_ptr<Registry> getUserRegistry();
+
+Path getUserRegistryPath();
+
+Registries getRegistries(ref<Store> store);
+
+void overrideRegistry(
+ const std::shared_ptr<const Input> & from,
+ const std::shared_ptr<const Input> & to,
+ const Attrs & extraAttrs);
+
+std::pair<std::shared_ptr<const Input>, Attrs> lookupInRegistries(
+ ref<Store> store,
+ std::shared_ptr<const Input> input);
+
+}
diff --git a/src/libfetchers/tree-info.cc b/src/libfetchers/tree-info.cc
index 5788e94a1..42a19cbc8 100644
--- a/src/libfetchers/tree-info.cc
+++ b/src/libfetchers/tree-info.cc
@@ -11,4 +11,50 @@ StorePath TreeInfo::computeStorePath(Store & store) const
return store.makeFixedOutputPath(true, narHash, "source");
}
+TreeInfo TreeInfo::fromJson(const nlohmann::json & json)
+{
+ TreeInfo info;
+
+ auto i = json.find("info");
+ if (i != json.end()) {
+ const nlohmann::json & i2(*i);
+
+ auto j = i2.find("narHash");
+ if (j != i2.end())
+ info.narHash = Hash((std::string) *j);
+ else
+ throw Error("attribute 'narHash' missing in lock file");
+
+ j = i2.find("revCount");
+ if (j != i2.end())
+ info.revCount = *j;
+
+ j = i2.find("lastModified");
+ if (j != i2.end())
+ info.lastModified = *j;
+
+ return info;
+ }
+
+ i = json.find("narHash");
+ if (i != json.end()) {
+ info.narHash = Hash((std::string) *i);
+ return info;
+ }
+
+ throw Error("attribute 'info' missing in lock file");
+}
+
+nlohmann::json TreeInfo::toJson() const
+{
+ nlohmann::json json;
+ assert(narHash);
+ json["narHash"] = narHash.to_string(SRI);
+ if (revCount)
+ json["revCount"] = *revCount;
+ if (lastModified)
+ json["lastModified"] = *lastModified;
+ return json;
+}
+
}
diff --git a/src/libfetchers/tree-info.hh b/src/libfetchers/tree-info.hh
index 2c7347281..3b62151c6 100644
--- a/src/libfetchers/tree-info.hh
+++ b/src/libfetchers/tree-info.hh
@@ -24,6 +24,10 @@ struct TreeInfo
}
StorePath computeStorePath(Store & store) const;
+
+ static TreeInfo fromJson(const nlohmann::json & json);
+
+ nlohmann::json toJson() const;
};
}