Fix rrule

devmotion · web-flow · commit 8e4ad8f917bc · 2022-04-13T15:52:02.000+02:00
diff --git a/src/basekernels/matern.jl b/src/basekernels/matern.jl
@@ -45,7 +45,7 @@ function ChainRulesCore.rrule(::typeof(_get_ν), k::T) where {T<:MaternKernel}
         dν = ChainRulesCore.@not_implemented(
             "derivatives of `MaternKernel` w.r.t. order `ν` are not implemented."
         )
-        return Tangent{T}(; ν=dν, metric=NoTangent())
+        return NoTangent(), Tangent{T}(; ν=dν, metric=NoTangent())
     end
     return _get_ν(k), _get_ν_pullback
 end

Original file line number	Diff line number	Diff line change
`@@ -45,7 +45,7 @@ function ChainRulesCore.rrule(::typeof(_get_ν), k::T) where {T<:MaternKernel}`
`45`	`45`	`dν = ChainRulesCore.@not_implemented(`
`46`	`46`	"derivatives of `MaternKernel` w.r.t. order `ν` are not implemented."
`47`	`47`	`)`
`48`		`- return Tangent{T}(; ν=dν, metric=NoTangent())`
	`48`	`+ return NoTangent(), Tangent{T}(; ν=dν, metric=NoTangent())`
`49`	`49`	`end`
`50`	`50`	`return _get_ν(k), _get_ν_pullback`
`51`	`51`	`end`