remove solana-program from spl-discriminator (#7427)

Author: kevinheavey

Cargo.lock

@@ -13,7 +13,8 @@ borsh = ["dep:borsh"]
 [dependencies]
 borsh = { version = "1", optional = true }
 bytemuck = { version = "1.19.0", features = ["derive"] }
-solana-program = "2.1.0"
+solana-program-error = "2.1.0"
+solana-sha256-hasher = "2.1.0"
 spl-discriminator-derive = { version = "0.2.0", path = "./derive" }
 
 [lib]

libraries/discriminator/Cargo.toml

@@ -2,7 +2,8 @@
 
 use {
     bytemuck::{Pod, Zeroable},
-    solana_program::{hash, program_error::ProgramError},
+    solana_program_error::ProgramError,
+    solana_sha256_hasher::hashv,
 };
 
 /// A trait for managing 8-byte discriminators in a slab of bytes
@@ -36,7 +37,7 @@ impl ArrayDiscriminator {
     }
     /// Creates a new `ArrayDiscriminator` from some hash input string literal
     pub fn new_with_hash_input(hash_input: &str) -> Self {
-        let hash_bytes = hash::hashv(&[hash_input.as_bytes()]).to_bytes();
+        let hash_bytes = hashv(&[hash_input.as_bytes()]).to_bytes();
         let mut discriminator_bytes = [0u8; 8];
         discriminator_bytes.copy_from_slice(&hash_bytes[..8]);
         Self(discriminator_bytes)

libraries/discriminator/src/discriminator.rs

@@ -98,7 +98,7 @@ mod tests {
     }
 
     fn build_discriminator(hash_input: &str) -> ArrayDiscriminator {
-        let preimage = solana_program::hash::hashv(&[hash_input.as_bytes()]);
+        let preimage = solana_sha256_hasher::hashv(&[hash_input.as_bytes()]);
         let mut bytes = [0u8; 8];
         bytes.copy_from_slice(&preimage.to_bytes()[..8]);
         ArrayDiscriminator::new(bytes)