1 files changed, 81 insertions, 0 deletions
diff --git a/src/libstore/derived-path.hh b/src/libstore/derived-path.hh
new file mode 100644
index 000000000..ce5ae5fc0
--- /dev/null
+++ b/src/libstore/derived-path.hh
@@ -0,0 +1,81 @@
+#pragma once
+
+#include "util.hh"
+#include "path.hh"
+#include "path.hh"
+
+#include <optional>
+
+#include <nlohmann/json_fwd.hpp>
+
+namespace nix {
+
+class Store;
+
+struct DerivedPathOpaque {
+    StorePath path;
+
+    nlohmann::json toJSON(ref<Store> store) const;
+    std::string to_string(const Store & store) const;
+    static DerivedPathOpaque parse(const Store & store, std::string_view);
+};
+
+struct DerivedPathBuilt {
+    StorePath drvPath;
+    std::set<std::string> outputs;
+
+    std::string to_string(const Store & store) const;
+    static DerivedPathBuilt parse(const Store & store, std::string_view);
+};
+
+using _DerivedPathRaw = std::variant<
+    DerivedPathOpaque,
+    DerivedPathBuilt
+>;
+
+struct DerivedPath : _DerivedPathRaw {
+    using Raw = _DerivedPathRaw;
+    using Raw::Raw;
+
+    using Opaque = DerivedPathOpaque;
+    using Built = DerivedPathBuilt;
+
+    inline const Raw & raw() const {
+        return static_cast<const Raw &>(*this);
+    }
+
+    std::string to_string(const Store & store) const;
+    static DerivedPath parse(const Store & store, std::string_view);
+};
+
+struct DerivedPathWithHintsBuilt {
+    StorePath drvPath;
+    std::map<std::string, std::optional<StorePath>> outputs;
+
+    nlohmann::json toJSON(ref<Store> store) const;
+    static DerivedPathWithHintsBuilt parse(const Store & store, std::string_view);
+};
+
+using _DerivedPathWithHintsRaw = std::variant<
+    DerivedPath::Opaque,
+    DerivedPathWithHintsBuilt
+>;
+
+struct DerivedPathWithHints : _DerivedPathWithHintsRaw {
+    using Raw = _DerivedPathWithHintsRaw;
+    using Raw::Raw;
+
+    using Opaque = DerivedPathOpaque;
+    using Built = DerivedPathWithHintsBuilt;
+
+    inline const Raw & raw() const {
+        return static_cast<const Raw &>(*this);
+    }
+
+};
+
+typedef std::vector<DerivedPathWithHints> DerivedPathsWithHints;
+
+nlohmann::json derivedPathsWithHintsToJSON(const DerivedPathsWithHints & buildables, ref<Store> store);
+
+}