Not compatible with Metal

[huiyuxie]

Similar to #2108 - since the old dependencies restrict the GPUCompiler to the old one which is out of maintenance, the Metal failed to precompile see

(Trixi) pkg> add Metal
   Resolving package versions...
      Compat entries added for Metal
    Updating `~/.julia/dev/Trixi.jl/Project.toml`
⌅ [dde4c033] + Metal v0.5.1
    Updating `~/.julia/dev/Trixi.jl/Manifest.toml`
  [a9b6321e] + Atomix v0.1.0
⌅ [fa961155] ↓ CEnum v0.5.0 ⇒ v0.4.2
⌅ [0c68f7d7] + GPUArrays v9.1.0
⌅ [61eb1bfa] + GPUCompiler v0.24.5
⌃ [63c18a36] + KernelAbstractions v0.9.18
⌅ [929cbde3] + LLVM v6.6.3
⌅ [dde4c033] + Metal v0.5.1
  [d8793406] + ObjectFile v0.4.2
⌅ [e86c9b32] + ObjectiveC v1.1.0
  [6c6a2e73] + Scratch v1.2.1
  [53d494c1] + StructIO v0.3.1
  [013be700] + UnsafeAtomics v0.2.1
⌅ [d80eeb9a] + UnsafeAtomicsLLVM v0.1.5
  [6e34b625] + Bzip2_jll v1.0.8+1
  [2e619515] + Expat_jll v2.6.2+0
⌅ [dad2f222] + LLVMExtra_jll v0.0.29+0
  [7106de7a] + LibMPDec_jll v2.5.1+0
⌅ [e9f186c6] + Libffi_jll v3.2.2+1
  [0418c028] + Metal_LLVM_Tools_jll v0.5.1+0
  [93d3a430] + Python_jll v3.10.14+0
  [76ed43ae] + SQLite_jll v3.45.3+0
  [ffd25f8a] + XZ_jll v5.4.6+0
        Info Packages marked with ⌃ and ⌅ have new versions available. Those with ⌃ may be upgradable, but those with ⌅ are restricted by compatibility constraints from upgrading. To see why use `status --outdated -m`
Precompiling project...
  ✗ Metal
  ✗ Metal → SpecialFunctionsExt
  12 dependencies successfully precompiled in 28 seconds. 239 already precompiled.
  2 dependencies errored.
  For a report of the errors see `julia> err`. To retry use `pkg> precompile`

And the developer from JuliaGPU said that it is not feasible to make a patch for the old GPUCompiler.

[JoshuaLampert]

Just to clarify: The root cause for this is also #2108 (comment) isn't it?

[huiyuxie]

@JoshuaLampert Yes see

(Trixi) pkg> add Metal@1.4.2
   Resolving package versions...
ERROR: Unsatisfiable requirements detected for package Adapt [79e6a3ab]:
 Adapt [79e6a3ab] log:
 ├─possible versions are: 0.3.0 - 4.0.4 or uninstalled
 ├─restricted by compatibility requirements with RecursiveArrayTools [731186ca] to versions: 3.0.0 - 3.7.2
 │ └─RecursiveArrayTools [731186ca] log:
 │   ├─possible versions are: 0.16.0 - 3.27.0 or uninstalled
 │   └─restricted to versions 2.38.10 - 2 by Trixi [a7f1ee26], leaving only versions: 2.38.10
 │     └─Trixi [a7f1ee26] log:
 │       ├─possible versions are: 0.9.2 or uninstalled
 │       └─Trixi [a7f1ee26] is fixed to version 0.9.2-DEV
 └─restricted by compatibility requirements with Metal [dde4c033] to versions: 4.0.0 - 4.0.4 — no versions left
   └─Metal [dde4c033] log:
     ├─possible versions are: 0.0.1 - 1.4.2 or uninstalled
     └─restricted to versions 1.4.2 by an explicit requirement, leaving only versions: 1.4.2