new lint: faster_zipattrswith

3 files changed, 36 insertions, 2 deletions

diff --git a/bin/tests/data/faster_zipattrswith.nix b/bin/tests/data/faster_zipattrswith.nix
new file mode 100644
index 0000000..2612995
--- /dev/null
+++ b/bin/tests/data/faster_zipattrswith.nix
@@ -0,0 +1,13 @@
+{
+  # trivial case
+  _ = lib.zipAttrsWith (name: values: values) [{ a = 1; } { a = 2; b = 3; }];
+
+  # offer lint heuristically on this too
+  _ = nixpkgs.lib.zipAttrsWith (name: values: values) [{ a = 1; } { a = 2; b = 3; }];
+
+  # do not lint on `builtins`
+  _ = builtins.zipAttrsWith (name: values: values) [
+    { a = 1; }
+    { a = 2; b = 3; }
+  ];
+}
diff --git a/bin/tests/main.rs b/bin/tests/main.rs
index 89d58e7..2c4b521 100644
--- a/bin/tests/main.rs
+++ b/bin/tests/main.rs
@@ -19,7 +19,7 @@ mod util {
                 test_lint!($($tail)*);
         };
         ($tname:ident) => {
-            test_lint!($tname => session_info!("2.5"));
+            test_lint!($tname => session_info!("2.6"));
         };
         ($tname:ident => $sess:expr) => {
             #[test]
@@ -61,5 +61,6 @@ test_lint! {
     unquoted_uri,
     deprecated_is_null,
     empty_inherit,
-    faster_groupby => session_info!("2.5")
+    faster_groupby => session_info!("2.5"),
+    faster_zipattrswith => session_info!("2.6")
 }
diff --git a/bin/tests/snapshots/main__faster_zipattrswith.snap b/bin/tests/snapshots/main__faster_zipattrswith.snap
new file mode 100644
index 0000000..6b21322
--- /dev/null
+++ b/bin/tests/snapshots/main__faster_zipattrswith.snap
@@ -0,0 +1,20 @@
+---
+source: bin/tests/main.rs
+expression: "&out"
+
+---
+[W16] Warning: Found lib.zipAttrsWith
+   ╭─[data/faster_zipattrswith.nix:3:7]
+   │
+ 3 │   _ = lib.zipAttrsWith (name: values: values) [{ a = 1; } { a = 2; b = 3; }];
+   ·       ────────┬───────  
+   ·               ╰───────── Prefer builtins.zipAttrsWith over lib.zipAttrsWith
+───╯
+[W16] Warning: Found lib.zipAttrsWith
+   ╭─[data/faster_zipattrswith.nix:6:7]
+   │
+ 6 │   _ = nixpkgs.lib.zipAttrsWith (name: values: values) [{ a = 1; } { a = 2; b = 3; }];
+   ·       ────────────┬───────────  
+   ·                   ╰───────────── Prefer builtins.zipAttrsWith over nixpkgs.lib.zipAttrsWith
+───╯
+