fix: sort keys in __MISE_DIFF to make the serialised value determin…

…istic

src/env_diff.rs

@@ -9,21 +9,33 @@ use eyre::Result;
 use flate2::write::{ZlibDecoder, ZlibEncoder};
 use flate2::Compression;
 use itertools::Itertools;
-use serde_derive::{Deserialize, Serialize};
+use serde::Serialize;
+use serde::Serializer;
 
 use crate::env::PATH_KEY;
 use crate::{cmd, file};
 
-#[derive(Default, Serialize, Deserialize)]
+#[derive(Default, serde_derive::Serialize, serde_derive::Deserialize)]
 pub struct EnvDiff {
-    #[serde(default)]
+    #[serde(serialize_with = "ordered_map")]
     pub old: HashMap<String, String>,
-    #[serde(default)]
+    #[serde(serialize_with = "ordered_map")]
     pub new: HashMap<String, String>,
     #[serde(default)]
     pub path: Vec<PathBuf>,
 }
 
+fn ordered_map<S: Serializer, K: Serialize + Ord, V: Serialize>(
+    value: &HashMap<K, V>,
+    serializer: S,
+) -> Result<S::Ok, S::Error>
+where
+    S: Serializer,
+{
+    let ordered: BTreeMap<_, _> = value.iter().collect();
+    ordered.serialize(serializer)
+}
+
 #[derive(Debug)]
 pub enum EnvDiffOperation {
     Add(String, String),