adding deps + typo fix

Project.toml

@@ -5,8 +5,10 @@ version = "0.1.0"
 
 [deps]
 BlockArrays = "8e7c35d0-a365-5155-bbbb-fb81a777f24e"
+ChainRulesCore = "d360d2e6-b24c-11e9-a2a3-2a2ae2dbcce4"
 DataStructures = "864edb3b-99cc-5e75-8d2d-829cb0a9cfe8"
 FastDifferentiation = "eb9bf01b-bf85-4b60-bf87-ee5de06c00be"
+ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
 Infiltrator = "5903a43b-9cc3-4c30-8d17-598619ec4e9b"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
@@ -15,8 +17,10 @@ TrajectoryGamesBase = "ac1ac542-73eb-4349-ae1b-660ab3609574"
 
 [compat]
 BlockArrays = "0.16.43"
+ChainRulesCore = "1.25.0"
 DataStructures = "0.18.20"
 FastDifferentiation = "0.4.2"
+ForwardDiff = "0.10.38"
 Infiltrator = "1.8.3"
 LinearAlgebra = "1.11.0"
 SparseArrays = "1.11.0"

src/AutoDiff.jl

@@ -62,8 +62,8 @@ function MCPSolver.solve(
     # glue forward and backward pass together into dual number types
     z_d = ForwardDiff.Dual{T}.(solution.z, z_p)
     x_d = @view z_d[1:(mcp.unconstrained_dimension)]
-    y_d = @view
-    z_d[(mcp.unconstrained_dimension + 1):(mcp.unconstrained_dimension + mcp.constrained_dimension)]
+    y_d =
+        (@view z_d[(mcp.unconstrained_dimension + 1):(mcp.unconstrained_dimension + mcp.constrained_dimension)])
     s_d = @view z_d[(mcp.unconstrained_dimension + mcp.constrained_dimension + 1):end]
 
     (; solution.status, solution.kkt_error, solution.ϵ, x = x_d, y = y_d, s = s_d)