Remove Compat.jl dependency

Author: adrhill

Project.toml

@@ -5,7 +5,6 @@ version = "1.7.1"
 
 [deps]
 ChainRulesCore = "d360d2e6-b24c-11e9-a2a3-2a2ae2dbcce4"
-Compat = "34da2185-b29b-5c13-b0c7-acf172513d20"
 EnzymeCore = "f151be2c-9106-41f4-ab19-57ee4f262869"
 
 [weakdeps]
@@ -18,7 +17,6 @@ ADTypesEnzymeCoreExt = "EnzymeCore"
 
 [compat]
 ChainRulesCore = "1.0.2"
-Compat = "3.47, 4.10"
 EnzymeCore = "0.5.3,0.6,0.7"
 julia = "1.6"
 

src/ADTypes.jl

@@ -6,7 +6,6 @@
 module ADTypes
 
 using Base: @deprecate
-using Compat: @compat # for `public`
 
 """
     AbstractADType
@@ -47,28 +46,42 @@ export AutoChainRules,
        AutoTapir,
        AutoTracker,
        AutoZygote
-@compat public AbstractMode
-@compat public ForwardMode, ReverseMode, ForwardOrReverseMode, SymbolicMode
-@compat public mode
-@compat public Auto
 
 # Sparse Automatic Differentiation
 export AutoSparse
-@compat public dense_ad
 
 # Sparsity detection
 export AbstractSparsityDetector
 export jacobian_sparsity, hessian_sparsity
-@compat public sparsity_detector
-@compat public NoSparsityDetector
-@compat public KnownJacobianSparsityDetector, KnownHessianSparsityDetector
 
 # Matrix coloring
 export AbstractColoringAlgorithm
 export column_coloring, row_coloring, symmetric_coloring
-@compat public coloring_algorithm
-@compat public NoColoringAlgorithm
 
 # legacy exports are taken care of by @deprecated
 
+# Define public interface
+# To avoid a dependency on Compat.jl, this uses a trick suggested by Lilith Hafner:
+# https://discourse.julialang.org/t/is-compat-jl-worth-it-for-the-public-keyword/119041/2
+if VERSION >= v"1.11.0-DEV.469"
+    # Automatic Differentiation
+    eval(Meta.parse("public AbstractMode"))
+    eval(Meta.parse("public ForwardMode, ReverseMode, ForwardOrReverseMode, SymbolicMode"))
+    eval(Meta.parse("public mode"))
+    eval(Meta.parse("public Auto"))
+
+    # Sparse Automatic Differentiation
+    eval(Meta.parse("public dense_ad"))
+
+    # Sparsity detection
+    eval(Meta.parse("public sparsity_detector"))
+    eval(Meta.parse("public NoSparsityDetector"))
+    eval(Meta.parse("public KnownJacobianSparsityDetector"))
+    eval(Meta.parse("public KnownHessianSparsityDetector"))
+
+    # Matrix coloring
+    eval(Meta.parse("public NoColoringAlgorithm"))
+    eval(Meta.parse("public coloring_algorithm"))
+end
+
 end