Fix

Author: gdalle

.github/workflows/Test.yml

@@ -61,9 +61,9 @@ jobs:
           Pkg.activate("./DifferentiationInterface/test");
           if VERSION < v"1.11";
           Pkg.rm("DifferentiationInterfaceTest");
-          Pkg.develop([PackageSpec(path="./DifferentiationInterface")]);
+          Pkg.resolve();
           else;
-          Pkg.develop([PackageSpec(path="./DifferentiationInterface"), PackageSpec(path="./DifferentiationInterfaceTest")]);
+          Pkg.develop(; path="./DifferentiationInterfaceTest");
           end;
           Pkg.activate("./DifferentiationInterface");
           test_kwargs = (; allow_reresolve=false, coverage=true);

DifferentiationInterface/test/Back/ChainRules/test.jl

@@ -1,6 +1,5 @@
 include("../../testutils.jl")
 
-using ChainRulesCore
 using DifferentiationInterface, DifferentiationInterfaceTest
 using Test
 using Zygote: ZygoteRuleConfig