diff options
| -rw-r--r-- | src/libexpr/primops/flake.cc | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/src/libexpr/primops/flake.cc b/src/libexpr/primops/flake.cc index b74e0b4b7..00eeba632 100644 --- a/src/libexpr/primops/flake.cc +++ b/src/libexpr/primops/flake.cc @@ -23,16 +23,20 @@ std::unique_ptr<FlakeRegistry> readRegistry(const Path & path) { auto registry = std::make_unique<FlakeRegistry>(); - auto json = nlohmann::json::parse(readFile(path)); + try { + auto json = nlohmann::json::parse(readFile(path)); - auto version = json.value("version", 0); - if (version != 1) - throw Error("flake registry '%s' has unsupported version %d", path, version); + auto version = json.value("version", 0); + if (version != 1) + throw Error("flake registry '%s' has unsupported version %d", path, version); - auto flakes = json["flakes"]; - for (auto i = flakes.begin(); i != flakes.end(); ++i) { - FlakeRegistry::Entry entry{FlakeRef(i->value("uri", ""))}; - registry->entries.emplace(i.key(), entry); + auto flakes = json["flakes"]; + for (auto i = flakes.begin(); i != flakes.end(); ++i) { + FlakeRegistry::Entry entry{FlakeRef(i->value("uri", ""))}; + registry->entries.emplace(i.key(), entry); + } + } catch (SysError & e) { + if (e.errNo != ENOENT) throw; } return registry; @@ -47,6 +51,7 @@ void writeRegistry(FlakeRegistry registry, Path path) for (auto elem : registry.entries) { json["flakes"][elem.first] = { {"uri", elem.second.ref.to_string()} }; } + createDirs(dirOf(path)); writeFile(path, json.dump(4)); // The '4' is the number of spaces used in the indentation in the json file. } |