use our own is_prime impl

.gitignore

@@ -14,3 +14,5 @@ bench/results
 cairo-rs-env/*
 cairo-rs-pypy-env/*
 cairo/
+
+ensure-no_std/Cargo.lock

CHANGELOG.md

@@ -23,7 +23,9 @@
 
 * move the vm in it's own directory and crate, different from the workspace
 
-* add a `ensure_no_std` crate that will be used by the CI to check that new changes are not reverting `no_std` support
+* add a `ensure-no_std` crate that will be used by the CI to check that new changes are not reverting `no_std` support
+
+* replace the use of `num-prime::is_prime` by a custom implementation, therefore restoring `no_std` compatibility
 
 #### [0.5.1] - 2023-6-7
 

Cargo.toml

@@ -1,6 +1,6 @@
 [workspace]
 members = ["cairo-vm-cli", "felt", "vm", "hint_accountant", "./deps/parse-hyperlinks"]
-exclude = ["ensure_no_std"]
+exclude = ["ensure-no_std"]
 
 [workspace.dependencies]
 mimalloc = { version = "0.1.29", default-features = false }
@@ -11,7 +11,6 @@ num-bigint = { version = "0.4", features = [
 rand = { version = "0.8.3", features = ["small_rng"], default-features = false }
 num-traits = { version = "0.2", default-features = false }
 num-integer = { version = "0.1.45", default-features = false }
-num-prime = { version = "0.4.3", features = ["big-int"], default-features = false }
 serde = { version = "1.0", features = ["derive"], default-features = false }
 serde_bytes = { version = "0.11.9", default-features = false, features = [
     "alloc",

ensure_no_std/Cargo.toml → ensure-no_std/Cargo.toml

@@ -1,10 +1,11 @@
 [package]
-name = "ensure_no_std"
+name = "ensure-no_std"
 version = "0.1.0"
 edition = "2021"
 
 [dependencies]
 cairo-felt = { path = "../felt", default-features = false, features = ["alloc"] }
+cairo-vm = { path = "../vm", default-features = false }
 
 wee_alloc = "0.4.5"
 

ensure_no_std/src/main.rs → ensure-no_std/src/main.rs

@@ -18,4 +18,4 @@ pub extern "C" fn _start() -> ! {
 static ALLOC: wee_alloc::WeeAlloc = wee_alloc::WeeAlloc::INIT;
 
 #[allow(unused_imports)]
-use cairo_felt;
+use {cairo_felt, cairo_vm};

vm/Cargo.toml

@@ -32,7 +32,6 @@ num-bigint = {workspace = true}
 rand = {workspace = true}
 num-traits = {workspace = true}
 num-integer = {workspace = true}
-num-prime = {workspace = true}
 serde = {workspace = true}
 serde_bytes = {workspace = true}
 serde_json = {workspace = true}
@@ -71,6 +70,7 @@ ark-std = {workspace = true, optional = true}
 [dev-dependencies]
 assert_matches = "1.5.0"
 rstest = { version = "0.17.0", default-features = false }
+num-prime = { version = "0.4.3", features = ["big-int"]}
 
 [target.'cfg(target_arch = "wasm32")'.dev-dependencies]
 wasm-bindgen-test = "0.3.34"