From f3130be18d50318eff0a2c889e2c27c3002ee69d Mon Sep 17 00:00:00 2001
From: David Widmann <david.widmann@it.uu.se>
Date: Wed, 7 Sep 2022 21:25:19 +0200
Subject: [PATCH] Remove dual hack

---
 Project.toml    | 2 +-
 src/lib/real.jl | 7 -------
 test/tracker.jl | 3 ++-
 3 files changed, 3 insertions(+), 9 deletions(-)

diff --git a/Project.toml b/Project.toml
index cdf0a18..3b71db0 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,6 +1,6 @@
 name = "Tracker"
 uuid = "9f7883ad-71c0-57eb-9f7f-b5c9e6d3789c"
-version = "0.2.21"
+version = "0.2.22"
 
 [deps]
 Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"
diff --git a/src/lib/real.jl b/src/lib/real.jl
index 833a7e1..9c93cd0 100644
--- a/src/lib/real.jl
+++ b/src/lib/real.jl
@@ -103,13 +103,6 @@ import Base:^
 
 ^(a::TrackedReal, b::Integer) = track(^, a, b)
 
-# Hack for conversions
-
-using ForwardDiff: Dual
-
-(T::Type{<:Real})(x::Dual) = Dual(T(x.value), map(T, x.partials.values))
-(Dual{T,V,N})(x::Dual) where {T,V,N} = invoke(Dual{T,V,N}, Tuple{Number}, x)
-
 # Tuples
 
 struct TrackedTuple{T<:Tuple}
diff --git a/test/tracker.jl b/test/tracker.jl
index 97dddcc..c8ed40a 100644
--- a/test/tracker.jl
+++ b/test/tracker.jl
@@ -339,7 +339,8 @@ end
   end
 end
 
-@test gradtest(x -> Float64.(x), 5)
+# Upstream issue: https://github.com/JuliaDiff/ForwardDiff.jl/pull/538
+@test_broken gradtest(x -> Float64.(x), 5)
 
 @testset "equality & order" begin
     # TrackedReal