[flake8-pyi] Add a fix for duplicate-literal-member (#14188)

## Summary

Closes https://github.com/astral-sh/ruff/issues/14187.

crates/ruff_linter/src/rules/flake8_pyi/rules/duplicate_literal_member.rs

@@ -2,12 +2,12 @@ use std::collections::HashSet;
 
 use rustc_hash::FxHashSet;
 
-use ruff_diagnostics::{Diagnostic, FixAvailability, Violation};
+use ruff_diagnostics::{AlwaysFixableViolation, Diagnostic, Edit, Fix};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::comparable::ComparableExpr;
-use ruff_python_ast::Expr;
+use ruff_python_ast::{self as ast, Expr, ExprContext};
 use ruff_python_semantic::analyze::typing::traverse_literal;
-use ruff_text_size::Ranged;
+use ruff_text_size::{Ranged, TextRange};
 
 use crate::checkers::ast::Checker;
 
@@ -27,6 +27,10 @@ use crate::checkers::ast::Checker;
 /// foo: Literal["a", "b"]
 /// ```
 ///
+/// ## Fix safety
+/// This rule's fix is marked as safe; however, the fix will flatten nested
+/// literals into a single top-level literal.
+///
 /// ## References
 /// - [Python documentation: `typing.Literal`](https://docs.python.org/3/library/typing.html#typing.Literal)
 #[violation]
@@ -34,24 +38,29 @@ pub struct DuplicateLiteralMember {
     duplicate_name: String,
 }
 
-impl Violation for DuplicateLiteralMember {
+impl AlwaysFixableViolation for DuplicateLiteralMember {
-    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
-
     #[derive_message_formats]
     fn message(&self) -> String {
         format!("Duplicate literal member `{}`", self.duplicate_name)
     }
+
+    fn fix_title(&self) -> String {
+        "Remove duplicates".to_string()
+    }
 }
 
 /// PYI062
 pub(crate) fn duplicate_literal_member<'a>(checker: &mut Checker, expr: &'a Expr) {
     let mut seen_nodes: HashSet<ComparableExpr<'_>, _> = FxHashSet::default();
+    let mut unique_nodes: Vec<&Expr> = Vec::new();
     let mut diagnostics: Vec<Diagnostic> = Vec::new();
 
     // Adds a member to `literal_exprs` if it is a `Literal` annotation
     let mut check_for_duplicate_members = |expr: &'a Expr, _: &'a Expr| {
         // If we've already seen this literal member, raise a violation.
-        if !seen_nodes.insert(expr.into()) {
+        if seen_nodes.insert(expr.into()) {
+            unique_nodes.push(expr);
+        } else {
             diagnostics.push(Diagnostic::new(
                 DuplicateLiteralMember {
                     duplicate_name: checker.generator().expr(expr),
@@ -61,7 +70,36 @@ pub(crate) fn duplicate_literal_member<'a>(checker: &mut Checker, expr: &'a Expr
         }
     };
 
-    // Traverse the literal, collect all diagnostic members
+    // Traverse the literal, collect all diagnostic members.
     traverse_literal(&mut check_for_duplicate_members, checker.semantic(), expr);
+
+    // If there's at least one diagnostic, create a fix to remove the duplicate members.
+    if !diagnostics.is_empty() {
+        if let Expr::Subscript(subscript) = expr {
+            let subscript = Expr::Subscript(ast::ExprSubscript {
+                slice: Box::new(if let [elt] = unique_nodes.as_slice() {
+                    (*elt).clone()
+                } else {
+                    Expr::Tuple(ast::ExprTuple {
+                        elts: unique_nodes.into_iter().cloned().collect(),
+                        range: TextRange::default(),
+                        ctx: ExprContext::Load,
+                        parenthesized: false,
+                    })
+                }),
+                value: subscript.value.clone(),
+                range: TextRange::default(),
+                ctx: ExprContext::Load,
+            });
+            let fix = Fix::safe_edit(Edit::range_replacement(
+                checker.generator().expr(&subscript),
+                expr.range(),
+            ));
+            for diagnostic in &mut diagnostics {
+                diagnostic.set_fix(fix.clone());
+            }
+        }
+    }
+
     checker.diagnostics.append(&mut diagnostics);
 }

crates/ruff_linter/src/rules/flake8_pyi/snapshots/ruff_linter__rules__flake8_pyi__tests__PYI062_PYI062.py.snap

@@ -1,7 +1,7 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_pyi/mod.rs
 ---
-PYI062.py:5:25: PYI062 Duplicate literal member `True`
+PYI062.py:5:25: PYI062 [*] Duplicate literal member `True`
   |
 3 | import typing_extensions
 4 | 
@@ -10,8 +10,19 @@ PYI062.py:5:25: PYI062 Duplicate literal member `True`
 6 | 
 7 | y: Literal[1, print("hello"), 3, Literal[4, 1]]  # PYI062 on the last 1
   |
+  = help: Remove duplicates
 
-PYI062.py:5:31: PYI062 Duplicate literal member `False`
+ℹ Safe fix
+2 2 | import typing as t
+3 3 | import typing_extensions
+4 4 | 
+5   |-x: Literal[True, False, True, False]  # PYI062 twice here
+  5 |+x: Literal[True, False]  # PYI062 twice here
+6 6 | 
+7 7 | y: Literal[1, print("hello"), 3, Literal[4, 1]]  # PYI062 on the last 1
+8 8 | 
+
+PYI062.py:5:31: PYI062 [*] Duplicate literal member `False`
   |
 3 | import typing_extensions
 4 | 
@@ -20,8 +31,19 @@ PYI062.py:5:31: PYI062 Duplicate literal member `False`
 6 | 
 7 | y: Literal[1, print("hello"), 3, Literal[4, 1]]  # PYI062 on the last 1
   |
+  = help: Remove duplicates
 
-PYI062.py:7:45: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+2 2 | import typing as t
+3 3 | import typing_extensions
+4 4 | 
+5   |-x: Literal[True, False, True, False]  # PYI062 twice here
+  5 |+x: Literal[True, False]  # PYI062 twice here
+6 6 | 
+7 7 | y: Literal[1, print("hello"), 3, Literal[4, 1]]  # PYI062 on the last 1
+8 8 | 
+
+PYI062.py:7:45: PYI062 [*] Duplicate literal member `1`
   |
 5 | x: Literal[True, False, True, False]  # PYI062 twice here
 6 | 
@@ -30,8 +52,19 @@ PYI062.py:7:45: PYI062 Duplicate literal member `1`
 8 | 
 9 | z: Literal[{1, 3, 5}, "foobar", {1,3,5}]  # PYI062 on the set literal
   |
+  = help: Remove duplicates
 
-PYI062.py:9:33: PYI062 Duplicate literal member `{1, 3, 5}`
+ℹ Safe fix
+4 4 | 
+5 5 | x: Literal[True, False, True, False]  # PYI062 twice here
+6 6 | 
+7   |-y: Literal[1, print("hello"), 3, Literal[4, 1]]  # PYI062 on the last 1
+  7 |+y: Literal[1, print("hello"), 3, 4]  # PYI062 on the last 1
+8 8 | 
+9 9 | z: Literal[{1, 3, 5}, "foobar", {1,3,5}]  # PYI062 on the set literal
+10 10 | 
+
+PYI062.py:9:33: PYI062 [*] Duplicate literal member `{1, 3, 5}`
    |
  7 | y: Literal[1, print("hello"), 3, Literal[4, 1]]  # PYI062 on the last 1
  8 | 
@@ -40,8 +73,19 @@ PYI062.py:9:33: PYI062 Duplicate literal member `{1, 3, 5}`
 10 | 
 11 | Literal[1, Literal[1]]  # once
    |
+   = help: Remove duplicates
 
-PYI062.py:11:20: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+6  6  | 
+7  7  | y: Literal[1, print("hello"), 3, Literal[4, 1]]  # PYI062 on the last 1
+8  8  | 
+9     |-z: Literal[{1, 3, 5}, "foobar", {1,3,5}]  # PYI062 on the set literal
+   9  |+z: Literal[{1, 3, 5}, "foobar"]  # PYI062 on the set literal
+10 10 | 
+11 11 | Literal[1, Literal[1]]  # once
+12 12 | Literal[1, 2, Literal[1, 2]]  # twice
+
+PYI062.py:11:20: PYI062 [*] Duplicate literal member `1`
    |
  9 | z: Literal[{1, 3, 5}, "foobar", {1,3,5}]  # PYI062 on the set literal
 10 | 
@@ -50,8 +94,19 @@ PYI062.py:11:20: PYI062 Duplicate literal member `1`
 12 | Literal[1, 2, Literal[1, 2]]  # twice
 13 | Literal[1, Literal[1], Literal[1]]  # twice
    |
+   = help: Remove duplicates
 
-PYI062.py:12:23: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+8  8  | 
+9  9  | z: Literal[{1, 3, 5}, "foobar", {1,3,5}]  # PYI062 on the set literal
+10 10 | 
+11    |-Literal[1, Literal[1]]  # once
+   11 |+Literal[1]  # once
+12 12 | Literal[1, 2, Literal[1, 2]]  # twice
+13 13 | Literal[1, Literal[1], Literal[1]]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+
+PYI062.py:12:23: PYI062 [*] Duplicate literal member `1`
    |
 11 | Literal[1, Literal[1]]  # once
 12 | Literal[1, 2, Literal[1, 2]]  # twice
@@ -59,8 +114,19 @@ PYI062.py:12:23: PYI062 Duplicate literal member `1`
 13 | Literal[1, Literal[1], Literal[1]]  # twice
 14 | Literal[1, Literal[2], Literal[2]]  # once
    |
+   = help: Remove duplicates
 
-PYI062.py:12:26: PYI062 Duplicate literal member `2`
+ℹ Safe fix
+9  9  | z: Literal[{1, 3, 5}, "foobar", {1,3,5}]  # PYI062 on the set literal
+10 10 | 
+11 11 | Literal[1, Literal[1]]  # once
+12    |-Literal[1, 2, Literal[1, 2]]  # twice
+   12 |+Literal[1, 2]  # twice
+13 13 | Literal[1, Literal[1], Literal[1]]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+15 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+
+PYI062.py:12:26: PYI062 [*] Duplicate literal member `2`
    |
 11 | Literal[1, Literal[1]]  # once
 12 | Literal[1, 2, Literal[1, 2]]  # twice
@@ -68,8 +134,19 @@ PYI062.py:12:26: PYI062 Duplicate literal member `2`
 13 | Literal[1, Literal[1], Literal[1]]  # twice
 14 | Literal[1, Literal[2], Literal[2]]  # once
    |
+   = help: Remove duplicates
 
-PYI062.py:13:20: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+9  9  | z: Literal[{1, 3, 5}, "foobar", {1,3,5}]  # PYI062 on the set literal
+10 10 | 
+11 11 | Literal[1, Literal[1]]  # once
+12    |-Literal[1, 2, Literal[1, 2]]  # twice
+   12 |+Literal[1, 2]  # twice
+13 13 | Literal[1, Literal[1], Literal[1]]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+15 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+
+PYI062.py:13:20: PYI062 [*] Duplicate literal member `1`
    |
 11 | Literal[1, Literal[1]]  # once
 12 | Literal[1, 2, Literal[1, 2]]  # twice
@@ -78,8 +155,19 @@ PYI062.py:13:20: PYI062 Duplicate literal member `1`
 14 | Literal[1, Literal[2], Literal[2]]  # once
 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
    |
+   = help: Remove duplicates
 
-PYI062.py:13:32: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+10 10 | 
+11 11 | Literal[1, Literal[1]]  # once
+12 12 | Literal[1, 2, Literal[1, 2]]  # twice
+13    |-Literal[1, Literal[1], Literal[1]]  # twice
+   13 |+Literal[1]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+15 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+16 16 | typing_extensions.Literal[1, 1, 1]  # twice
+
+PYI062.py:13:32: PYI062 [*] Duplicate literal member `1`
    |
 11 | Literal[1, Literal[1]]  # once
 12 | Literal[1, 2, Literal[1, 2]]  # twice
@@ -88,8 +176,19 @@ PYI062.py:13:32: PYI062 Duplicate literal member `1`
 14 | Literal[1, Literal[2], Literal[2]]  # once
 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
    |
+   = help: Remove duplicates
 
-PYI062.py:14:32: PYI062 Duplicate literal member `2`
+ℹ Safe fix
+10 10 | 
+11 11 | Literal[1, Literal[1]]  # once
+12 12 | Literal[1, 2, Literal[1, 2]]  # twice
+13    |-Literal[1, Literal[1], Literal[1]]  # twice
+   13 |+Literal[1]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+15 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+16 16 | typing_extensions.Literal[1, 1, 1]  # twice
+
+PYI062.py:14:32: PYI062 [*] Duplicate literal member `2`
    |
 12 | Literal[1, 2, Literal[1, 2]]  # twice
 13 | Literal[1, Literal[1], Literal[1]]  # twice
@@ -98,8 +197,19 @@ PYI062.py:14:32: PYI062 Duplicate literal member `2`
 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
 16 | typing_extensions.Literal[1, 1, 1]  # twice
    |
+   = help: Remove duplicates
 
-PYI062.py:15:37: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+11 11 | Literal[1, Literal[1]]  # once
+12 12 | Literal[1, 2, Literal[1, 2]]  # twice
+13 13 | Literal[1, Literal[1], Literal[1]]  # twice
+14    |-Literal[1, Literal[2], Literal[2]]  # once
+   14 |+Literal[1, 2]  # once
+15 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+16 16 | typing_extensions.Literal[1, 1, 1]  # twice
+17 17 | 
+
+PYI062.py:15:37: PYI062 [*] Duplicate literal member `1`
    |
 13 | Literal[1, Literal[1], Literal[1]]  # twice
 14 | Literal[1, Literal[2], Literal[2]]  # once
@@ -107,8 +217,19 @@ PYI062.py:15:37: PYI062 Duplicate literal member `1`
    |                                     ^ PYI062
 16 | typing_extensions.Literal[1, 1, 1]  # twice
    |
+   = help: Remove duplicates
 
-PYI062.py:16:30: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+12 12 | Literal[1, 2, Literal[1, 2]]  # twice
+13 13 | Literal[1, Literal[1], Literal[1]]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+15    |-t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+   15 |+t.Literal[1, 2]  # once
+16 16 | typing_extensions.Literal[1, 1, 1]  # twice
+17 17 | 
+18 18 | # Ensure issue is only raised once, even on nested literals
+
+PYI062.py:16:30: PYI062 [*] Duplicate literal member `1`
    |
 14 | Literal[1, Literal[2], Literal[2]]  # once
 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
@@ -117,8 +238,19 @@ PYI062.py:16:30: PYI062 Duplicate literal member `1`
 17 | 
 18 | # Ensure issue is only raised once, even on nested literals
    |
+   = help: Remove duplicates
 
-PYI062.py:16:33: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+13 13 | Literal[1, Literal[1], Literal[1]]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+15 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+16    |-typing_extensions.Literal[1, 1, 1]  # twice
+   16 |+typing_extensions.Literal[1]  # twice
+17 17 | 
+18 18 | # Ensure issue is only raised once, even on nested literals
+19 19 | MyType = Literal["foo", Literal[True, False, True], "bar"]  # PYI062
+
+PYI062.py:16:33: PYI062 [*] Duplicate literal member `1`
    |
 14 | Literal[1, Literal[2], Literal[2]]  # once
 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
@@ -127,8 +259,19 @@ PYI062.py:16:33: PYI062 Duplicate literal member `1`
 17 | 
 18 | # Ensure issue is only raised once, even on nested literals
    |
+   = help: Remove duplicates
 
-PYI062.py:19:46: PYI062 Duplicate literal member `True`
+ℹ Safe fix
+13 13 | Literal[1, Literal[1], Literal[1]]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+15 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+16    |-typing_extensions.Literal[1, 1, 1]  # twice
+   16 |+typing_extensions.Literal[1]  # twice
+17 17 | 
+18 18 | # Ensure issue is only raised once, even on nested literals
+19 19 | MyType = Literal["foo", Literal[True, False, True], "bar"]  # PYI062
+
+PYI062.py:19:46: PYI062 [*] Duplicate literal member `True`
    |
 18 | # Ensure issue is only raised once, even on nested literals
 19 | MyType = Literal["foo", Literal[True, False, True], "bar"]  # PYI062
@@ -136,3 +279,13 @@ PYI062.py:19:46: PYI062 Duplicate literal member `True`
 20 | 
 21 | n: Literal["No", "duplicates", "here", 1, "1"]
    |
+   = help: Remove duplicates
+
+ℹ Safe fix
+16 16 | typing_extensions.Literal[1, 1, 1]  # twice
+17 17 | 
+18 18 | # Ensure issue is only raised once, even on nested literals
+19    |-MyType = Literal["foo", Literal[True, False, True], "bar"]  # PYI062
+   19 |+MyType = Literal["foo", True, False, "bar"]  # PYI062
+20 20 | 
+21 21 | n: Literal["No", "duplicates", "here", 1, "1"]

crates/ruff_linter/src/rules/flake8_pyi/snapshots/ruff_linter__rules__flake8_pyi__tests__PYI062_PYI062.pyi.snap

@@ -1,7 +1,7 @@
 ---
 source: crates/ruff_linter/src/rules/flake8_pyi/mod.rs
 ---
-PYI062.pyi:5:25: PYI062 Duplicate literal member `True`
+PYI062.pyi:5:25: PYI062 [*] Duplicate literal member `True`
   |
 3 | import typing_extensions
 4 | 
@@ -10,8 +10,19 @@ PYI062.pyi:5:25: PYI062 Duplicate literal member `True`
 6 | 
 7 | y: Literal[1, print("hello"), 3, Literal[4, 1]]  # PY062 on the last 1
   |
+  = help: Remove duplicates
 
-PYI062.pyi:5:31: PYI062 Duplicate literal member `False`
+ℹ Safe fix
+2 2 | import typing as t
+3 3 | import typing_extensions
+4 4 | 
+5   |-x: Literal[True, False, True, False]  # PY062 twice here
+  5 |+x: Literal[True, False]  # PY062 twice here
+6 6 | 
+7 7 | y: Literal[1, print("hello"), 3, Literal[4, 1]]  # PY062 on the last 1
+8 8 | 
+
+PYI062.pyi:5:31: PYI062 [*] Duplicate literal member `False`
   |
 3 | import typing_extensions
 4 | 
@@ -20,8 +31,19 @@ PYI062.pyi:5:31: PYI062 Duplicate literal member `False`
 6 | 
 7 | y: Literal[1, print("hello"), 3, Literal[4, 1]]  # PY062 on the last 1
   |
+  = help: Remove duplicates
 
-PYI062.pyi:7:45: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+2 2 | import typing as t
+3 3 | import typing_extensions
+4 4 | 
+5   |-x: Literal[True, False, True, False]  # PY062 twice here
+  5 |+x: Literal[True, False]  # PY062 twice here
+6 6 | 
+7 7 | y: Literal[1, print("hello"), 3, Literal[4, 1]]  # PY062 on the last 1
+8 8 | 
+
+PYI062.pyi:7:45: PYI062 [*] Duplicate literal member `1`
   |
 5 | x: Literal[True, False, True, False]  # PY062 twice here
 6 | 
@@ -30,8 +52,19 @@ PYI062.pyi:7:45: PYI062 Duplicate literal member `1`
 8 | 
 9 | z: Literal[{1, 3, 5}, "foobar", {1,3,5}]  # PY062 on the set literal
   |
+  = help: Remove duplicates
 
-PYI062.pyi:9:33: PYI062 Duplicate literal member `{1, 3, 5}`
+ℹ Safe fix
+4 4 | 
+5 5 | x: Literal[True, False, True, False]  # PY062 twice here
+6 6 | 
+7   |-y: Literal[1, print("hello"), 3, Literal[4, 1]]  # PY062 on the last 1
+  7 |+y: Literal[1, print("hello"), 3, 4]  # PY062 on the last 1
+8 8 | 
+9 9 | z: Literal[{1, 3, 5}, "foobar", {1,3,5}]  # PY062 on the set literal
+10 10 | 
+
+PYI062.pyi:9:33: PYI062 [*] Duplicate literal member `{1, 3, 5}`
    |
  7 | y: Literal[1, print("hello"), 3, Literal[4, 1]]  # PY062 on the last 1
  8 | 
@@ -40,8 +73,19 @@ PYI062.pyi:9:33: PYI062 Duplicate literal member `{1, 3, 5}`
 10 | 
 11 | Literal[1, Literal[1]]  # once
    |
+   = help: Remove duplicates
 
-PYI062.pyi:11:20: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+6  6  | 
+7  7  | y: Literal[1, print("hello"), 3, Literal[4, 1]]  # PY062 on the last 1
+8  8  | 
+9     |-z: Literal[{1, 3, 5}, "foobar", {1,3,5}]  # PY062 on the set literal
+   9  |+z: Literal[{1, 3, 5}, "foobar"]  # PY062 on the set literal
+10 10 | 
+11 11 | Literal[1, Literal[1]]  # once
+12 12 | Literal[1, 2, Literal[1, 2]]  # twice
+
+PYI062.pyi:11:20: PYI062 [*] Duplicate literal member `1`
    |
  9 | z: Literal[{1, 3, 5}, "foobar", {1,3,5}]  # PY062 on the set literal
 10 | 
@@ -50,8 +94,19 @@ PYI062.pyi:11:20: PYI062 Duplicate literal member `1`
 12 | Literal[1, 2, Literal[1, 2]]  # twice
 13 | Literal[1, Literal[1], Literal[1]]  # twice
    |
+   = help: Remove duplicates
 
-PYI062.pyi:12:23: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+8  8  | 
+9  9  | z: Literal[{1, 3, 5}, "foobar", {1,3,5}]  # PY062 on the set literal
+10 10 | 
+11    |-Literal[1, Literal[1]]  # once
+   11 |+Literal[1]  # once
+12 12 | Literal[1, 2, Literal[1, 2]]  # twice
+13 13 | Literal[1, Literal[1], Literal[1]]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+
+PYI062.pyi:12:23: PYI062 [*] Duplicate literal member `1`
    |
 11 | Literal[1, Literal[1]]  # once
 12 | Literal[1, 2, Literal[1, 2]]  # twice
@@ -59,8 +114,19 @@ PYI062.pyi:12:23: PYI062 Duplicate literal member `1`
 13 | Literal[1, Literal[1], Literal[1]]  # twice
 14 | Literal[1, Literal[2], Literal[2]]  # once
    |
+   = help: Remove duplicates
 
-PYI062.pyi:12:26: PYI062 Duplicate literal member `2`
+ℹ Safe fix
+9  9  | z: Literal[{1, 3, 5}, "foobar", {1,3,5}]  # PY062 on the set literal
+10 10 | 
+11 11 | Literal[1, Literal[1]]  # once
+12    |-Literal[1, 2, Literal[1, 2]]  # twice
+   12 |+Literal[1, 2]  # twice
+13 13 | Literal[1, Literal[1], Literal[1]]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+15 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+
+PYI062.pyi:12:26: PYI062 [*] Duplicate literal member `2`
    |
 11 | Literal[1, Literal[1]]  # once
 12 | Literal[1, 2, Literal[1, 2]]  # twice
@@ -68,8 +134,19 @@ PYI062.pyi:12:26: PYI062 Duplicate literal member `2`
 13 | Literal[1, Literal[1], Literal[1]]  # twice
 14 | Literal[1, Literal[2], Literal[2]]  # once
    |
+   = help: Remove duplicates
 
-PYI062.pyi:13:20: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+9  9  | z: Literal[{1, 3, 5}, "foobar", {1,3,5}]  # PY062 on the set literal
+10 10 | 
+11 11 | Literal[1, Literal[1]]  # once
+12    |-Literal[1, 2, Literal[1, 2]]  # twice
+   12 |+Literal[1, 2]  # twice
+13 13 | Literal[1, Literal[1], Literal[1]]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+15 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+
+PYI062.pyi:13:20: PYI062 [*] Duplicate literal member `1`
    |
 11 | Literal[1, Literal[1]]  # once
 12 | Literal[1, 2, Literal[1, 2]]  # twice
@@ -78,8 +155,19 @@ PYI062.pyi:13:20: PYI062 Duplicate literal member `1`
 14 | Literal[1, Literal[2], Literal[2]]  # once
 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
    |
+   = help: Remove duplicates
 
-PYI062.pyi:13:32: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+10 10 | 
+11 11 | Literal[1, Literal[1]]  # once
+12 12 | Literal[1, 2, Literal[1, 2]]  # twice
+13    |-Literal[1, Literal[1], Literal[1]]  # twice
+   13 |+Literal[1]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+15 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+16 16 | typing_extensions.Literal[1, 1, 1]  # twice
+
+PYI062.pyi:13:32: PYI062 [*] Duplicate literal member `1`
    |
 11 | Literal[1, Literal[1]]  # once
 12 | Literal[1, 2, Literal[1, 2]]  # twice
@@ -88,8 +176,19 @@ PYI062.pyi:13:32: PYI062 Duplicate literal member `1`
 14 | Literal[1, Literal[2], Literal[2]]  # once
 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
    |
+   = help: Remove duplicates
 
-PYI062.pyi:14:32: PYI062 Duplicate literal member `2`
+ℹ Safe fix
+10 10 | 
+11 11 | Literal[1, Literal[1]]  # once
+12 12 | Literal[1, 2, Literal[1, 2]]  # twice
+13    |-Literal[1, Literal[1], Literal[1]]  # twice
+   13 |+Literal[1]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+15 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+16 16 | typing_extensions.Literal[1, 1, 1]  # twice
+
+PYI062.pyi:14:32: PYI062 [*] Duplicate literal member `2`
    |
 12 | Literal[1, 2, Literal[1, 2]]  # twice
 13 | Literal[1, Literal[1], Literal[1]]  # twice
@@ -98,8 +197,19 @@ PYI062.pyi:14:32: PYI062 Duplicate literal member `2`
 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
 16 | typing_extensions.Literal[1, 1, 1]  # twice
    |
+   = help: Remove duplicates
 
-PYI062.pyi:15:37: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+11 11 | Literal[1, Literal[1]]  # once
+12 12 | Literal[1, 2, Literal[1, 2]]  # twice
+13 13 | Literal[1, Literal[1], Literal[1]]  # twice
+14    |-Literal[1, Literal[2], Literal[2]]  # once
+   14 |+Literal[1, 2]  # once
+15 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+16 16 | typing_extensions.Literal[1, 1, 1]  # twice
+17 17 | 
+
+PYI062.pyi:15:37: PYI062 [*] Duplicate literal member `1`
    |
 13 | Literal[1, Literal[1], Literal[1]]  # twice
 14 | Literal[1, Literal[2], Literal[2]]  # once
@@ -107,8 +217,19 @@ PYI062.pyi:15:37: PYI062 Duplicate literal member `1`
    |                                     ^ PYI062
 16 | typing_extensions.Literal[1, 1, 1]  # twice
    |
+   = help: Remove duplicates
 
-PYI062.pyi:16:30: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+12 12 | Literal[1, 2, Literal[1, 2]]  # twice
+13 13 | Literal[1, Literal[1], Literal[1]]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+15    |-t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+   15 |+t.Literal[1, 2]  # once
+16 16 | typing_extensions.Literal[1, 1, 1]  # twice
+17 17 | 
+18 18 | # Ensure issue is only raised once, even on nested literals
+
+PYI062.pyi:16:30: PYI062 [*] Duplicate literal member `1`
    |
 14 | Literal[1, Literal[2], Literal[2]]  # once
 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
@@ -117,8 +238,19 @@ PYI062.pyi:16:30: PYI062 Duplicate literal member `1`
 17 | 
 18 | # Ensure issue is only raised once, even on nested literals
    |
+   = help: Remove duplicates
 
-PYI062.pyi:16:33: PYI062 Duplicate literal member `1`
+ℹ Safe fix
+13 13 | Literal[1, Literal[1], Literal[1]]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+15 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+16    |-typing_extensions.Literal[1, 1, 1]  # twice
+   16 |+typing_extensions.Literal[1]  # twice
+17 17 | 
+18 18 | # Ensure issue is only raised once, even on nested literals
+19 19 | MyType = Literal["foo", Literal[True, False, True], "bar"]  # PYI062
+
+PYI062.pyi:16:33: PYI062 [*] Duplicate literal member `1`
    |
 14 | Literal[1, Literal[2], Literal[2]]  # once
 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
@@ -127,8 +259,19 @@ PYI062.pyi:16:33: PYI062 Duplicate literal member `1`
 17 | 
 18 | # Ensure issue is only raised once, even on nested literals
    |
+   = help: Remove duplicates
 
-PYI062.pyi:19:46: PYI062 Duplicate literal member `True`
+ℹ Safe fix
+13 13 | Literal[1, Literal[1], Literal[1]]  # twice
+14 14 | Literal[1, Literal[2], Literal[2]]  # once
+15 15 | t.Literal[1, t.Literal[2, t.Literal[1]]]  # once
+16    |-typing_extensions.Literal[1, 1, 1]  # twice
+   16 |+typing_extensions.Literal[1]  # twice
+17 17 | 
+18 18 | # Ensure issue is only raised once, even on nested literals
+19 19 | MyType = Literal["foo", Literal[True, False, True], "bar"]  # PYI062
+
+PYI062.pyi:19:46: PYI062 [*] Duplicate literal member `True`
    |
 18 | # Ensure issue is only raised once, even on nested literals
 19 | MyType = Literal["foo", Literal[True, False, True], "bar"]  # PYI062
@@ -136,3 +279,13 @@ PYI062.pyi:19:46: PYI062 Duplicate literal member `True`
 20 | 
 21 | n: Literal["No", "duplicates", "here", 1, "1"]
    |
+   = help: Remove duplicates
+
+ℹ Safe fix
+16 16 | typing_extensions.Literal[1, 1, 1]  # twice
+17 17 | 
+18 18 | # Ensure issue is only raised once, even on nested literals
+19    |-MyType = Literal["foo", Literal[True, False, True], "bar"]  # PYI062
+   19 |+MyType = Literal["foo", True, False, "bar"]  # PYI062
+20 20 | 
+21 21 | n: Literal["No", "duplicates", "here", 1, "1"]