Remove Requires dependency (#386)

Project.toml

@@ -5,7 +5,6 @@ version = "1.2.0"
 [deps]
 Adapt = "79e6a3ab-5dfb-504d-930d-738a2a938a0e"
 Artifacts = "56f22d72-fd6d-98f1-02f0-08ddc0907c33"
-BFloat16s = "ab4f0b2a-ad5b-11e8-123f-65d77653426b"
 CEnum = "fa961155-64e5-5f13-b03f-caf6b980ea82"
 CodecBzip2 = "523fee87-0ab8-5b00-afb7-3ecf72e48cfd"
 ExprTools = "e2ba6199-217a-4e67-a87a-7c52f15ade04"
@@ -23,11 +22,18 @@ Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7"
 Python_jll = "93d3a430-8e7c-50da-8e8d-3dfcfb3baf05"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
-Requires = "ae029012-a4dd-5104-9daa-d747884805df"
 SHA = "ea8e919c-243c-51af-8825-aaa63cd721ce"
 StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
 UUIDs = "cf7118a7-6976-5b1a-9a39-7adc72f591a4"
 
+[weakdeps]
+BFloat16s = "ab4f0b2a-ad5b-11e8-123f-65d77653426b"
+SpecialFunctions = "276daf66-3868-5448-9aa4-cd146d93841b"
+
+[extensions]
+BFloat16sExt = "BFloat16s"
+SpecialFunctionsExt = "SpecialFunctions"
+
 [compat]
 Adapt = "4"
 Artifacts = "1"
@@ -45,19 +51,10 @@ ObjectiveC = "2.1, 3"
 PrecompileTools = "1"
 Preferences = "1"
 Reexport = "1.0"
-Requires = "1"
 SHA = "0.7"
 SpecialFunctions = "2"
 StaticArrays = "1"
 julia = "1.10"
 
-[extensions]
-BFloat16sExt = "BFloat16s"
-SpecialFunctionsExt = "SpecialFunctions"
-
 [extras]
 SpecialFunctions = "276daf66-3868-5448-9aa4-cd146d93841b"
-
-[weakdeps]
-BFloat16s = "ab4f0b2a-ad5b-11e8-123f-65d77653426b"
-SpecialFunctions = "276daf66-3868-5448-9aa4-cd146d93841b"

ext/SpecialFunctionsExt.jl

@@ -1,7 +1,7 @@
 module SpecialFunctionsExt # Should be same name as the file (just like a normal package)
 
 using Metal
-isdefined(Base, :get_extension) ? (using SpecialFunctions) : (using ..SpecialFunctions)
+using SpecialFunctions
 
 # math functionality corresponding to SpecialFunctions.jl
 

src/Metal.jl

@@ -14,10 +14,6 @@ using ExprTools: splitdef, combinedef
 using Artifacts
 using ObjectiveC, .CoreFoundation, .Foundation, .Dispatch, .OS
 
-if !isdefined(Base, :get_extension)
-    using Requires: @require
-end
-
 # core library
 include("../lib/mtl/MTL.jl")
 @reexport using .MTL
@@ -69,10 +65,6 @@ include("MetalKernels.jl")
 import .MetalKernels: MetalBackend
 export MetalBackend
 
-@static if !isdefined(Base, :get_extension)
-    include("../ext/BFloat16sExt.jl")
-end
-
 include("deprecated.jl")
 
 include("precompile.jl")

src/initialization.jl

@@ -50,12 +50,6 @@ function __init__()
     if isdefined(Base, :active_repl_backend)
         push!(Base.active_repl_backend.ast_transforms, synchronize_metal_tasks)
     end
-
-    @static if !isdefined(Base, :get_extension)
-        @require SpecialFunctions = "276daf66-3868-5448-9aa4-cd146d93841b" begin
-            include("../ext/SpecialFunctionsExt.jl")
-        end
-    end
 end
 
 function synchronize_metal_tasks(ex)