Fix iOS app store validation issues (#3071)

* put ug cuda behind cuda flag

* revert to ug 0.0.2 when on ios

* if only use ug if target_os is not ios added to wasm check already there

Author: greenrazer

candle-core/Cargo.toml

@@ -30,13 +30,13 @@ rand_distr = { workspace = true }
 rayon = { workspace = true }
 safetensors = { workspace = true }
 thiserror = { workspace = true }
-ug-cuda = { workspace = true, optional = true }
-ug-metal = { workspace = true, optional = true }
 yoke = { workspace = true }
 zip = { workspace = true }
 
-[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
+[target.'cfg(all(not(target_arch = "wasm32"), not(target_os = "ios")))'.dependencies]
 ug = { workspace = true }
+ug-cuda = { workspace = true, optional = true }
+ug-metal = { workspace = true, optional = true }
 
 [dev-dependencies]
 anyhow = { workspace = true }

candle-core/src/custom_op.rs

@@ -386,7 +386,7 @@ pub struct UgIOp1 {
 
 impl UgIOp1 {
     #[allow(unused)]
-    #[cfg(not(target_arch = "wasm32"))]
+    #[cfg(all(not(target_arch = "wasm32"), not(target_os = "ios")))]
     pub fn new(
         name: &'static str,
         kernel: ug::lang::ssa::Kernel,

candle-core/src/error.rs

@@ -172,7 +172,7 @@ pub enum Error {
     #[error("Metal error {0}")]
     Metal(#[from] MetalError),
 
-    #[cfg(not(target_arch = "wasm32"))]
+    #[cfg(all(not(target_arch = "wasm32"), not(target_os = "ios")))]
     #[error(transparent)]
     Ug(#[from] ug::Error),
 

candle-core/src/metal_backend/device.rs

@@ -73,7 +73,7 @@ impl std::ops::Deref for MetalDevice {
 }
 
 impl MetalDevice {
-    #[cfg(not(target_arch = "wasm32"))]
+    #[cfg(all(not(target_arch = "wasm32"), not(target_os = "ios")))]
     pub fn compile(
         &self,
         func_name: &'static str,