3 files changed, 8 insertions, 3 deletions

diff --git a/lib/Cargo.toml b/lib/Cargo.toml
index 54b9c52..d90c5bf 100644
--- a/lib/Cargo.toml
+++ b/lib/Cargo.toml
@@ -7,13 +7,16 @@ license = "MIT"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-rnix = "0.9.0"
 if_chain = "1.0"
 macros = { path = "../macros" }
 lazy_static = "1.0"
 rowan = "0.12.5"
 serde_json = { version = "1.0.68", optional = true }
 
+[dependencies.rnix]
+git = "https://github.com/nix-community/rnix-parser"
+rev = "8083f5694ddeaca47c946aa9ae7ecf117fa4823b"
+
 [dependencies.serde]
 version = "1.0.130"
 features = [ "derive" ]
diff --git a/lib/src/lints/bool_comparison.rs b/lib/src/lints/bool_comparison.rs
index ef7f5d2..5402f31 100644
--- a/lib/src/lints/bool_comparison.rs
+++ b/lib/src/lints/bool_comparison.rs
@@ -41,8 +41,9 @@ impl Rule for BoolComparison {
             if let Some(bin_expr) = BinOp::cast(node.clone());
             if let Some(lhs) = bin_expr.lhs();
             if let Some(rhs) = bin_expr.rhs();
+            if let Some(op) = bin_expr.operator();
 
-            if let op@(BinOpKind::Equal | BinOpKind::NotEqual) = bin_expr.operator();
+            if let BinOpKind::Equal | BinOpKind::NotEqual = op;
             let (non_bool_side, bool_side) = if boolean_ident(&lhs).is_some() {
                 (rhs, lhs)
             } else if boolean_ident(&rhs).is_some() {
@@ -70,7 +71,7 @@ impl Rule for BoolComparison {
                                 SyntaxKind::NODE_BIN_OP => {
                                     let inner = BinOp::cast(non_bool_side.clone()).unwrap();
                                     // `!a ? b`, no paren required
-                                    if inner.operator() == BinOpKind::IsSet {
+                                    if inner.operator()? == BinOpKind::IsSet {
                                         make::unary_not(&non_bool_side).node().clone()
                                     } else {
                                         let parens = make::parenthesize(&non_bool_side);
diff --git a/lib/src/lints/empty_pattern.rs b/lib/src/lints/empty_pattern.rs
index b399ba2..14c3b5e 100644
--- a/lib/src/lints/empty_pattern.rs
+++ b/lib/src/lints/empty_pattern.rs
@@ -49,6 +49,7 @@ impl Rule for EmptyPattern {
             if let Some(body) = lambda_expr.body();
 
             if let Some(pattern) = Pattern::cast(arg.clone());
+
             // no patterns within `{ }`
             if pattern.entries().count() == 0;
             // pattern is not bound