Split out InstallableFlake and InstallableAttrPath

src/libcmd/installable-attr-path.hh

@@ -0,0 +1,56 @@
+#include "globals.hh"
+#include "installable-value.hh"
+#include "outputs-spec.hh"
+#include "util.hh"
+#include "command.hh"
+#include "attr-path.hh"
+#include "common-eval-args.hh"
+#include "derivations.hh"
+#include "eval-inline.hh"
+#include "eval.hh"
+#include "get-drvs.hh"
+#include "store-api.hh"
+#include "shared.hh"
+#include "eval-cache.hh"
+#include "url.hh"
+#include "registry.hh"
+#include "build-result.hh"
+
+#include <regex>
+#include <queue>
+
+#include <nlohmann/json.hpp>
+
+namespace nix {
+
+class InstallableAttrPath : public InstallableValue
+{
+    SourceExprCommand & cmd;
+    RootValue v;
+    std::string attrPath;
+    ExtendedOutputsSpec extendedOutputsSpec;
+
+    InstallableAttrPath(
+        ref<EvalState> state,
+        SourceExprCommand & cmd,
+        Value * v,
+        const std::string & attrPath,
+        ExtendedOutputsSpec extendedOutputsSpec);
+
+    std::string what() const override { return attrPath; };
+
+    std::pair<Value *, PosIdx> toValue(EvalState & state) override;
+
+    DerivedPathsWithInfo toDerivedPaths() override;
+
+public:
+
+    static InstallableAttrPath parse(
+        ref<EvalState> state,
+        SourceExprCommand & cmd,
+        Value * v,
+        std::string_view prefix,
+        ExtendedOutputsSpec extendedOutputsSpec);
+};
+
+}