(chore): Update to syn 2 from syn 1

Signed-off-by: Daniel Silverstone <dsilvers@digital-scurf.org>

2 files changed, 4 insertions, 4 deletions

diff --git a/subplotlib-derive/Cargo.toml b/subplotlib-derive/Cargo.toml
index 4d56491..eaa079e 100644
--- a/subplotlib-derive/Cargo.toml
+++ b/subplotlib-derive/Cargo.toml
@@ -18,7 +18,7 @@ rust-version = "1.63"
 proc-macro = true
 
 [dependencies]
-syn = { version = "1", features = ["full"] }
+syn = { version = "2", features = ["full"] }
 quote = "1"
 proc-macro2 = "1"
 fehler = "1"
diff --git a/subplotlib-derive/src/lib.rs b/subplotlib-derive/src/lib.rs
index 584d730..83e4adf 100644
--- a/subplotlib-derive/src/lib.rs
+++ b/subplotlib-derive/src/lib.rs
@@ -209,19 +209,19 @@ fn process_step(mut input: ItemFn) -> proc_macro2::TokenStream {
     let contexts: Vec<Type> = input
         .attrs
         .iter()
-        .filter(|attr| attr.path.is_ident("context"))
+        .filter(|attr| attr.path().is_ident("context"))
         .map(|attr| {
             let ty: Type = attr.parse_args()?;
             Ok(ty)
         })
         .collect::<Result<_, Error>>()?;
 
-    input.attrs.retain(|f| !f.path.is_ident("context"));
+    input.attrs.retain(|f| !f.path().is_ident("context"));
 
     let docs: Vec<_> = input
         .attrs
         .iter()
-        .filter(|attr| attr.path.is_ident("doc"))
+        .filter(|attr| attr.path().is_ident("doc"))
         .collect();
 
     let fields = input