Most of the refactor. Need to switch machines.

retired/nest_lib_rs_old/error.rs

@@ -0,0 +1,35 @@
+use std::sync::{MutexGuard, PoisonError, TryLockError};
+
+use derive_more::{Display, From};
+use path::PathHandler;
+
+pub type Result<T> = core::result::Result<T, Error>;
+
+#[derive(Debug, From, Display)]
+pub enum Error {
+    #[from]
+    Io(std::io::Error),
+
+    MutexLock(String),
+
+    MutexTryLock(String),
+
+    PathSub,
+
+    #[from]
+    Toml(toml::de::Error),
+
+    MissingPathHandler,
+}
+
+impl From<PoisonError<MutexGuard<'_, PathHandler>>> for Error {
+    fn from(value: PoisonError<MutexGuard<PathHandler>>) -> Self {
+        Self::MutexLock(value.to_string())
+    }
+}
+
+impl From<TryLockError<MutexGuard<'_, PathHandler>>> for Error {
+    fn from(value: TryLockError<MutexGuard<PathHandler>>) -> Self {
+        Self::MutexTryLock(value.to_string())
+    }
+}