From bd993583ea86a3442ac05b030a12fb8579f5d6a7 Mon Sep 17 00:00:00 2001
From: Lyndon White <oxinabox@ucc.asn.au>
Date: Sat, 16 Oct 2021 19:55:59 +0100
Subject: [PATCH 1/3] Move deprecated Vararg UnionAll outside

---
 src/projection.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/projection.jl b/src/projection.jl
index e5542d4d8..9b986a68b 100644
--- a/src/projection.jl
+++ b/src/projection.jl
@@ -131,7 +131,7 @@ ProjectTo(::AbstractZero) = ProjectTo{NoTangent}()  # Any x::Zero in forward pas
 # Also, any explicit construction with fields, where all fields project to zero, itself
 # projects to zero. This simplifies projectors for wrapper types like Diagonal([true, false]).
 const _PZ = ProjectTo{<:AbstractZero}
-const _PZ_Tuple = Tuple{_PZ,Vararg{<:_PZ}}  # 1 or more ProjectTo{<:AbstractZeros}
+const _PZ_Tuple = Tuple{PZ,Vararg{PZ}} where PZ<:_PZ  # 1 or more ProjectTo{<:AbstractZeros}
 function ProjectTo{P}(::NamedTuple{T,<:_PZ_Tuple}) where {P,T}
     return ProjectTo{NoTangent}()
 end

From 05530c63cd8221dc86febdca08efc292962f0582 Mon Sep 17 00:00:00 2001
From: Lyndon White <oxinabox@ucc.asn.au>
Date: Sat, 16 Oct 2021 20:57:35 +0100
Subject: [PATCH 2/3] Update src/projection.jl

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
---
 src/projection.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/projection.jl b/src/projection.jl
index 9b986a68b..ace5c8586 100644
--- a/src/projection.jl
+++ b/src/projection.jl
@@ -131,7 +131,7 @@ ProjectTo(::AbstractZero) = ProjectTo{NoTangent}()  # Any x::Zero in forward pas
 # Also, any explicit construction with fields, where all fields project to zero, itself
 # projects to zero. This simplifies projectors for wrapper types like Diagonal([true, false]).
 const _PZ = ProjectTo{<:AbstractZero}
-const _PZ_Tuple = Tuple{PZ,Vararg{PZ}} where PZ<:_PZ  # 1 or more ProjectTo{<:AbstractZeros}
+const _PZ_Tuple = Tuple{PZ,Vararg{PZ}} where {PZ<:_PZ}  # 1 or more ProjectTo{<:AbstractZeros}
 function ProjectTo{P}(::NamedTuple{T,<:_PZ_Tuple}) where {P,T}
     return ProjectTo{NoTangent}()
 end

From 7255e78653fbdd5a0e7b2b074ae76a593595314b Mon Sep 17 00:00:00 2001
From: Lyndon White <oxinabox@ucc.asn.au>
Date: Sat, 16 Oct 2021 20:59:28 +0100
Subject: [PATCH 3/3] Update src/projection.jl

---
 src/projection.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/projection.jl b/src/projection.jl
index ace5c8586..2986f388f 100644
--- a/src/projection.jl
+++ b/src/projection.jl
@@ -131,7 +131,7 @@ ProjectTo(::AbstractZero) = ProjectTo{NoTangent}()  # Any x::Zero in forward pas
 # Also, any explicit construction with fields, where all fields project to zero, itself
 # projects to zero. This simplifies projectors for wrapper types like Diagonal([true, false]).
 const _PZ = ProjectTo{<:AbstractZero}
-const _PZ_Tuple = Tuple{PZ,Vararg{PZ}} where {PZ<:_PZ}  # 1 or more ProjectTo{<:AbstractZeros}
+const _PZ_Tuple = Tuple{_PZ,Vararg{_PZ}}  # 1 or more ProjectTo{<:AbstractZeros}
 function ProjectTo{P}(::NamedTuple{T,<:_PZ_Tuple}) where {P,T}
     return ProjectTo{NoTangent}()
 end