diff --git a/src/libcmd/installable-flake.cc b/src/libcmd/installable-flake.cc
index 852a5618e..8796ad5ba 100644
--- a/src/libcmd/installable-flake.cc
+++ b/src/libcmd/installable-flake.cc
@@ -43,20 +43,6 @@ std::vector<std::string> InstallableFlake::getActualAttrPaths()
     return res;
 }
 
-Value * InstallableFlake::getFlakeOutputs(EvalState & state, const flake::LockedFlake & lockedFlake)
-{
-    auto vFlake = state.allocValue();
-
-    callFlake(state, lockedFlake, *vFlake);
-
-    auto aOutputs = vFlake->attrs()->get(state.symbols.create("outputs"));
-    assert(aOutputs);
-
-    state.forceValue(*aOutputs->value, aOutputs->value->determinePos(noPos));
-
-    return aOutputs->value;
-}
-
 static std::string showAttrPaths(const std::vector<std::string> & paths)
 {
     std::string s;
diff --git a/src/libcmd/installable-flake.hh b/src/libcmd/installable-flake.hh
index b0d6f5afc..8e0a232ef 100644
--- a/src/libcmd/installable-flake.hh
+++ b/src/libcmd/installable-flake.hh
@@ -53,8 +53,6 @@ struct InstallableFlake : InstallableValue
 
     std::vector<std::string> getActualAttrPaths();
 
-    Value * getFlakeOutputs(EvalState & state, const flake::LockedFlake & lockedFlake);
-
     DerivedPathsWithInfo toDerivedPaths() override;
 
     std::pair<Value *, PosIdx> toValue(EvalState & state) override;