RPM build fix (reverted CI changes which will need to be un-reverted or made conditional) and vendor Rust dependencies to make builds much faster in any CI system.

zeroidc/vendor/thiserror-impl/src/lib.rs

@@ -0,0 +1,34 @@
+#![allow(
+    clippy::blocks_in_if_conditions,
+    clippy::cast_lossless,
+    clippy::cast_possible_truncation,
+    clippy::manual_map,
+    clippy::map_unwrap_or,
+    clippy::needless_pass_by_value,
+    clippy::option_if_let_else,
+    clippy::range_plus_one,
+    clippy::single_match_else,
+    clippy::too_many_lines,
+    clippy::wrong_self_convention
+)]
+
+extern crate proc_macro;
+
+mod ast;
+mod attr;
+mod expand;
+mod fmt;
+mod generics;
+mod prop;
+mod valid;
+
+use proc_macro::TokenStream;
+use syn::{parse_macro_input, DeriveInput};
+
+#[proc_macro_derive(Error, attributes(backtrace, error, from, source))]
+pub fn derive_error(input: TokenStream) -> TokenStream {
+    let input = parse_macro_input!(input as DeriveInput);
+    expand::derive(&input)
+        .unwrap_or_else(|err| err.to_compile_error())
+        .into()
+}