Rename FixKind to FixAvailability (#7658)

**Summary** `FixKind` feels to generic, i suggest renaming it to
something like `FixAvailibility`.

Commands used:

```bash
rg FixKind --files-with-matches | xargs sed -i 's/FixKind/FixAvailability/g'
rg fix_kind --files-with-matches | xargs sed -i 's/fix_kind/fix_availability/g'
rg FIX_KIND --files-with-matches | xargs sed -i 's/FIX_KIND/FIX_AVAILABILITY/g'
cargo fmt
```

`rg -i "fix.kind"` doesn't show any matches anymore.

crates/ruff_cli/src/commands/rule.rs

@@ -5,7 +5,7 @@ use serde::ser::SerializeSeq;
 use serde::{Serialize, Serializer};
 use strum::IntoEnumIterator;
 
-use ruff_diagnostics::FixKind;
+use ruff_diagnostics::FixAvailability;
 use ruff_linter::registry::{Linter, Rule, RuleNamespace};
 
 use crate::args::HelpFormat;
@@ -51,9 +51,12 @@ fn format_rule_text(rule: Rule) -> String {
     output.push('\n');
     output.push('\n');
 
-    let fix_kind = rule.fixable();
-    if matches!(fix_kind, FixKind::Always | FixKind::Sometimes) {
-        output.push_str(&fix_kind.to_string());
+    let fix_availability = rule.fixable();
+    if matches!(
+        fix_availability,
+        FixAvailability::Always | FixAvailability::Sometimes
+    ) {
+        output.push_str(&fix_availability.to_string());
         output.push('\n');
         output.push('\n');
     }

crates/ruff_dev/src/generate_docs.rs

@@ -8,7 +8,7 @@ use anyhow::Result;
 use regex::{Captures, Regex};
 use strum::IntoEnumIterator;
 
-use ruff_diagnostics::FixKind;
+use ruff_diagnostics::FixAvailability;
 use ruff_linter::registry::{Linter, Rule, RuleNamespace};
 use ruff_workspace::options::Options;
 use ruff_workspace::options_base::OptionsMetadata;
@@ -37,9 +37,12 @@ pub(crate) fn main(args: &Args) -> Result<()> {
                 output.push('\n');
             }
 
-            let fix_kind = rule.fixable();
-            if matches!(fix_kind, FixKind::Always | FixKind::Sometimes) {
-                output.push_str(&fix_kind.to_string());
+            let fix_availability = rule.fixable();
+            if matches!(
+                fix_availability,
+                FixAvailability::Always | FixAvailability::Sometimes
+            ) {
+                output.push_str(&fix_availability.to_string());
                 output.push('\n');
                 output.push('\n');
             }

crates/ruff_dev/src/generate_rules_table.rs

@@ -5,7 +5,7 @@
 use itertools::Itertools;
 use strum::IntoEnumIterator;
 
-use ruff_diagnostics::FixKind;
+use ruff_diagnostics::FixAvailability;
 use ruff_linter::registry::{Linter, Rule, RuleNamespace};
 use ruff_linter::upstream_categories::UpstreamCategoryAndPrefix;
 use ruff_workspace::options::Options;
@@ -21,10 +21,10 @@ fn generate_table(table_out: &mut String, rules: impl IntoIterator<Item = Rule>,
     table_out.push('\n');
     for rule in rules {
         let fix_token = match rule.fixable() {
-            FixKind::Always | FixKind::Sometimes => {
+            FixAvailability::Always | FixAvailability::Sometimes => {
                 format!("<span style='opacity: 1'>{FIX_SYMBOL}</span>")
             }
-            FixKind::None => format!("<span style='opacity: 0.1'>{FIX_SYMBOL}</span>"),
+            FixAvailability::None => format!("<span style='opacity: 0.1'>{FIX_SYMBOL}</span>"),
         };
         let preview_token = if rule.is_preview() || rule.is_nursery() {
             format!("<span style='opacity: 1'>{PREVIEW_SYMBOL}</span>")

crates/ruff_diagnostics/src/lib.rs

@@ -2,7 +2,7 @@ pub use diagnostic::{Diagnostic, DiagnosticKind};
 pub use edit::Edit;
 pub use fix::{Applicability, Fix, IsolationLevel};
 pub use source_map::{SourceMap, SourceMarker};
-pub use violation::{AlwaysFixableViolation, FixKind, Violation};
+pub use violation::{AlwaysFixableViolation, FixAvailability, Violation};
 
 mod diagnostic;
 mod edit;

crates/ruff_diagnostics/src/violation.rs

@@ -1,26 +1,26 @@
 use std::fmt::{Debug, Display};
 
 #[derive(Debug, Copy, Clone)]
-pub enum FixKind {
+pub enum FixAvailability {
     Sometimes,
     Always,
     None,
 }
 
-impl Display for FixKind {
+impl Display for FixAvailability {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            FixKind::Sometimes => write!(f, "Fix is sometimes available."),
-            FixKind::Always => write!(f, "Fix is always available."),
-            FixKind::None => write!(f, "Fix is not available."),
+            FixAvailability::Sometimes => write!(f, "Fix is sometimes available."),
+            FixAvailability::Always => write!(f, "Fix is always available."),
+            FixAvailability::None => write!(f, "Fix is not available."),
         }
     }
 }
 
 pub trait Violation: Debug + PartialEq + Eq {
     /// `None` in the case an fix is never available or otherwise Some
-    /// [`FixKind`] describing the available fix.
-    const FIX_KIND: FixKind = FixKind::None;
+    /// [`FixAvailability`] describing the available fix.
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::None;
 
     /// The message used to describe the violation.
     fn message(&self) -> String;
@@ -65,7 +65,7 @@ pub trait AlwaysFixableViolation: Debug + PartialEq + Eq {
 
 /// A blanket implementation.
 impl<V: AlwaysFixableViolation> Violation for V {
-    const FIX_KIND: FixKind = FixKind::Always;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Always;
 
     fn message(&self) -> String {
         <Self as AlwaysFixableViolation>::message(self)

crates/ruff_linter/src/rules/flake8_bugbear/rules/mutable_argument_default.rs

@@ -1,5 +1,5 @@
 use ast::call_path::{from_qualified_name, CallPath};
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::helpers::is_docstring_stmt;
 use ruff_python_ast::{self as ast, Expr, Parameter, ParameterWithDefault};
@@ -64,7 +64,7 @@ use crate::registry::AsRule;
 pub struct MutableArgumentDefault;
 
 impl Violation for MutableArgumentDefault {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_bugbear/rules/unreliable_callable_check.rs

@@ -1,6 +1,6 @@
 use ruff_python_ast::{self as ast, Constant, Expr};
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_text_size::Ranged;
 
@@ -37,7 +37,7 @@ use crate::registry::AsRule;
 pub struct UnreliableCallableCheck;
 
 impl Violation for UnreliableCallableCheck {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_bugbear/rules/unused_loop_control_variable.rs

@@ -1,6 +1,6 @@
 use rustc_hash::FxHashMap;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::visitor::Visitor;
 use ruff_python_ast::{self as ast, Expr};
@@ -56,7 +56,7 @@ pub struct UnusedLoopControlVariable {
 }
 
 impl Violation for UnusedLoopControlVariable {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_comprehensions/rules/unnecessary_comprehension_any_all.rs

@@ -1,7 +1,7 @@
 use ruff_python_ast::{self as ast, Expr, Keyword};
 
 use ruff_diagnostics::Violation;
-use ruff_diagnostics::{Diagnostic, FixKind};
+use ruff_diagnostics::{Diagnostic, FixAvailability};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::helpers::any_over_expr;
 use ruff_text_size::Ranged;
@@ -44,7 +44,7 @@ use crate::rules::flake8_comprehensions::fixes;
 pub struct UnnecessaryComprehensionAnyAll;
 
 impl Violation for UnnecessaryComprehensionAnyAll {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_comprehensions/rules/unnecessary_map.rs

@@ -1,7 +1,7 @@
 use std::fmt;
 
 use ruff_diagnostics::{Diagnostic, Fix};
-use ruff_diagnostics::{FixKind, Violation};
+use ruff_diagnostics::{FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::visitor;
 use ruff_python_ast::visitor::Visitor;
@@ -47,7 +47,7 @@ pub struct UnnecessaryMap {
 }
 
 impl Violation for UnnecessaryMap {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_errmsg/rules/string_in_exception.rs

@@ -1,7 +1,7 @@
 use ruff_python_ast::{self as ast, Arguments, Constant, Expr, ExprContext, Stmt};
 use ruff_text_size::{Ranged, TextRange};
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::whitespace;
 use ruff_python_codegen::{Generator, Stylist};
@@ -50,7 +50,7 @@ use crate::registry::{AsRule, Rule};
 pub struct RawStringInException;
 
 impl Violation for RawStringInException {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {
@@ -104,7 +104,7 @@ impl Violation for RawStringInException {
 pub struct FStringInException;
 
 impl Violation for FStringInException {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {
@@ -160,7 +160,7 @@ impl Violation for FStringInException {
 pub struct DotFormatInException;
 
 impl Violation for DotFormatInException {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_implicit_str_concat/rules/implicit.rs

@@ -3,7 +3,7 @@ use ruff_python_parser::lexer::LexResult;
 use ruff_python_parser::Tok;
 use ruff_text_size::{Ranged, TextRange};
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::str::{leading_quote, trailing_quote};
 use ruff_python_index::Indexer;
@@ -36,7 +36,7 @@ use crate::rules::flake8_implicit_str_concat::settings::Settings;
 pub struct SingleLineImplicitStringConcatenation;
 
 impl Violation for SingleLineImplicitStringConcatenation {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_import_conventions/rules/unconventional_import_alias.rs

@@ -1,6 +1,6 @@
 use rustc_hash::FxHashMap;
 
-use ruff_diagnostics::{Diagnostic, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_semantic::{Binding, Imported};
 use ruff_text_size::Ranged;
@@ -37,7 +37,7 @@ pub struct UnconventionalImportAlias {
 }
 
 impl Violation for UnconventionalImportAlias {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_logging/rules/direct_logger_instantiation.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast as ast;
 use ruff_text_size::Ranged;
@@ -41,7 +41,7 @@ use crate::registry::AsRule;
 pub struct DirectLoggerInstantiation;
 
 impl Violation for DirectLoggerInstantiation {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_logging/rules/invalid_get_logger_argument.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::{self as ast, Expr};
 use ruff_text_size::Ranged;
@@ -44,7 +44,7 @@ use crate::registry::AsRule;
 pub struct InvalidGetLoggerArgument;
 
 impl Violation for InvalidGetLoggerArgument {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_logging/rules/undocumented_warn.rs

@@ -1,6 +1,6 @@
 use ruff_python_ast::Expr;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_text_size::Ranged;
 
@@ -36,7 +36,7 @@ use crate::registry::AsRule;
 pub struct UndocumentedWarn;
 
 impl Violation for UndocumentedWarn {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
     #[derive_message_formats]
     fn message(&self) -> String {
         format!("Use of undocumented `logging.WARN` constant")

crates/ruff_linter/src/rules/flake8_pie/rules/reimplemented_list_builtin.rs

@@ -1,7 +1,7 @@
 use ruff_python_ast::{self as ast, Expr, ExprLambda};
 
 use ruff_diagnostics::{Diagnostic, Edit, Fix};
-use ruff_diagnostics::{FixKind, Violation};
+use ruff_diagnostics::{FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_text_size::Ranged;
 
@@ -40,7 +40,7 @@ use crate::registry::AsRule;
 pub struct ReimplementedListBuiltin;
 
 impl Violation for ReimplementedListBuiltin {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

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

@@ -5,7 +5,7 @@ use std::collections::HashSet;
 use crate::checkers::ast::Checker;
 use crate::registry::AsRule;
 use crate::rules::flake8_pyi::helpers::traverse_union;
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::comparable::ComparableExpr;
 use ruff_text_size::Ranged;
@@ -34,7 +34,7 @@ pub struct DuplicateUnionMember {
 }
 
 impl Violation for DuplicateUnionMember {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

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

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::{Constant, Expr, ExprConstant, Stmt, StmtExpr};
 use ruff_text_size::Ranged;
@@ -31,7 +31,7 @@ use crate::registry::AsRule;
 pub struct EllipsisInNonEmptyClassBody;
 
 impl Violation for EllipsisInNonEmptyClassBody {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

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

@@ -6,7 +6,7 @@ use ruff_python_ast::{
 };
 use smallvec::SmallVec;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::helpers::is_const_none;
 use ruff_python_semantic::SemanticModel;
@@ -49,7 +49,7 @@ pub struct BadExitAnnotation {
 }
 
 impl Violation for BadExitAnnotation {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

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

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_semantic::Imported;
 use ruff_python_semantic::{Binding, BindingKind};
@@ -33,7 +33,7 @@ use crate::renamer::Renamer;
 pub struct UnaliasedCollectionsAbcSetImport;
 
 impl Violation for UnaliasedCollectionsAbcSetImport {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_pytest_style/rules/assertion.rs

@@ -7,7 +7,7 @@ use libcst_native::{
     SimpleWhitespace, SmallStatement, Statement, TrailingWhitespace,
 };
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::helpers::Truthiness;
 use ruff_python_ast::parenthesize::parenthesized_range;
@@ -62,7 +62,7 @@ use super::unittest_assert::UnittestAssert;
 pub struct PytestCompositeAssertion;
 
 impl Violation for PytestCompositeAssertion {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {
@@ -192,7 +192,7 @@ pub struct PytestUnittestAssertion {
 }
 
 impl Violation for PytestUnittestAssertion {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {
@@ -354,7 +354,7 @@ pub struct PytestUnittestRaisesAssertion {
 }
 
 impl Violation for PytestUnittestRaisesAssertion {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_pytest_style/rules/parametrize.rs

@@ -2,7 +2,7 @@ use std::hash::BuildHasherDefault;
 
 use rustc_hash::FxHashMap;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::comparable::ComparableExpr;
 use ruff_python_ast::node::AstNode;
@@ -77,7 +77,7 @@ pub struct PytestParametrizeNamesWrongType {
 }
 
 impl Violation for PytestParametrizeNamesWrongType {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {
@@ -234,7 +234,7 @@ pub struct PytestDuplicateParametrizeTestCases {
 }
 
 impl Violation for PytestDuplicateParametrizeTestCases {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_simplify/rules/ast_bool_op.rs

@@ -7,7 +7,7 @@ use ruff_python_ast::{self as ast, Arguments, BoolOp, CmpOp, Expr, ExprContext,
 use ruff_text_size::{Ranged, TextRange};
 use rustc_hash::FxHashMap;
 
-use ruff_diagnostics::{AlwaysFixableViolation, Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{AlwaysFixableViolation, Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::comparable::ComparableExpr;
 use ruff_python_ast::helpers::{contains_effect, Truthiness};
@@ -49,7 +49,7 @@ pub struct DuplicateIsinstanceCall {
 }
 
 impl Violation for DuplicateIsinstanceCall {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_simplify/rules/ast_expr.rs

@@ -2,7 +2,7 @@ use ruff_python_ast::{self as ast, Arguments, Constant, Expr};
 use ruff_text_size::{Ranged, TextRange};
 
 use crate::fix::snippet::SourceCodeSnippet;
-use ruff_diagnostics::{AlwaysFixableViolation, Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{AlwaysFixableViolation, Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::helpers::is_const_none;
 
@@ -41,7 +41,7 @@ pub struct UncapitalizedEnvironmentVariables {
 }
 
 impl Violation for UncapitalizedEnvironmentVariables {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_simplify/rules/ast_if.rs

@@ -5,7 +5,7 @@ use ruff_python_ast::{
 use ruff_text_size::{Ranged, TextRange};
 use rustc_hash::FxHashSet;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::comparable::{ComparableConstant, ComparableExpr, ComparableStmt};
 use ruff_python_ast::helpers::{any_over_expr, contains_effect};
@@ -56,7 +56,7 @@ fn compare_stmt(stmt1: &ComparableStmt, stmt2: &ComparableStmt) -> bool {
 pub struct CollapsibleIf;
 
 impl Violation for CollapsibleIf {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {
@@ -96,7 +96,7 @@ pub struct NeedlessBool {
 }
 
 impl Violation for NeedlessBool {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {
@@ -168,7 +168,7 @@ pub struct IfElseBlockInsteadOfIfExp {
 }
 
 impl Violation for IfElseBlockInsteadOfIfExp {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {
@@ -242,7 +242,7 @@ pub struct IfElseBlockInsteadOfDictGet {
 }
 
 impl Violation for IfElseBlockInsteadOfDictGet {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_simplify/rules/ast_ifexp.rs

@@ -1,7 +1,7 @@
 use ruff_python_ast::{self as ast, Arguments, Expr, ExprContext, UnaryOp};
 use ruff_text_size::{Ranged, TextRange};
 
-use ruff_diagnostics::{AlwaysFixableViolation, Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{AlwaysFixableViolation, Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::helpers::{is_const_false, is_const_true};
 use ruff_python_ast::parenthesize::parenthesized_range;
@@ -35,7 +35,7 @@ pub struct IfExprWithTrueFalse {
 }
 
 impl Violation for IfExprWithTrueFalse {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_simplify/rules/ast_with.rs

@@ -1,7 +1,7 @@
 use log::error;
 
 use ruff_diagnostics::{Diagnostic, Fix};
-use ruff_diagnostics::{FixKind, Violation};
+use ruff_diagnostics::{FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::{self as ast, Stmt, WithItem};
 use ruff_python_trivia::{SimpleTokenKind, SimpleTokenizer};
@@ -45,7 +45,7 @@ use super::fix_with;
 pub struct MultipleWithStatements;
 
 impl Violation for MultipleWithStatements {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_simplify/rules/reimplemented_builtin.rs

@@ -3,7 +3,7 @@ use ruff_python_ast::{
 };
 use ruff_text_size::{Ranged, TextRange};
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::helpers::any_over_expr;
 use ruff_python_ast::traversal;
@@ -43,7 +43,7 @@ pub struct ReimplementedBuiltin {
 }
 
 impl Violation for ReimplementedBuiltin {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_simplify/rules/suppressible_exception.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::call_path::compose_call_path;
 use ruff_python_ast::helpers;
@@ -48,7 +48,7 @@ pub struct SuppressibleException {
 }
 
 impl Violation for SuppressibleException {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_simplify/rules/yoda_conditions.rs

@@ -1,7 +1,7 @@
 use anyhow::Result;
 use libcst_native::CompOp;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::{self as ast, CmpOp, Expr, UnaryOp};
 use ruff_python_codegen::Stylist;
@@ -52,7 +52,7 @@ pub struct YodaConditions {
 }
 
 impl Violation for YodaConditions {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_tidy_imports/rules/relative_imports.rs

@@ -1,7 +1,7 @@
 use ruff_python_ast::{self as ast, Identifier, Stmt};
 use ruff_text_size::{Ranged, TextRange};
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::helpers::resolve_imported_module_path;
 use ruff_python_codegen::Generator;
@@ -51,7 +51,7 @@ pub struct RelativeImports {
 }
 
 impl Violation for RelativeImports {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_type_checking/rules/runtime_import_in_type_checking_block.rs

@@ -3,7 +3,7 @@ use std::borrow::Cow;
 use anyhow::Result;
 use rustc_hash::FxHashMap;
 
-use ruff_diagnostics::{Diagnostic, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_semantic::{AnyImport, Imported, NodeId, ResolvedReferenceId, Scope};
 use ruff_text_size::{Ranged, TextRange};
@@ -49,7 +49,7 @@ pub struct RuntimeImportInTypeCheckingBlock {
 }
 
 impl Violation for RuntimeImportInTypeCheckingBlock {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/flake8_type_checking/rules/typing_only_runtime_import.rs

@@ -3,7 +3,7 @@ use std::borrow::Cow;
 use anyhow::Result;
 use rustc_hash::FxHashMap;
 
-use ruff_diagnostics::{Diagnostic, DiagnosticKind, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, DiagnosticKind, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_semantic::{AnyImport, Binding, Imported, NodeId, ResolvedReferenceId, Scope};
 use ruff_text_size::{Ranged, TextRange};
@@ -67,7 +67,7 @@ pub struct TypingOnlyFirstPartyImport {
 }
 
 impl Violation for TypingOnlyFirstPartyImport {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {
@@ -135,7 +135,7 @@ pub struct TypingOnlyThirdPartyImport {
 }
 
 impl Violation for TypingOnlyThirdPartyImport {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {
@@ -203,7 +203,7 @@ pub struct TypingOnlyStandardLibraryImport {
 }
 
 impl Violation for TypingOnlyStandardLibraryImport {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/isort/rules/organize_imports.rs

@@ -2,7 +2,7 @@ use std::path::Path;
 
 use itertools::{EitherOrBoth, Itertools};
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::whitespace::trailing_lines_end;
 use ruff_python_ast::{PySourceType, Stmt};
@@ -41,7 +41,7 @@ use super::super::{comments, format_imports};
 pub struct UnsortedImports;
 
 impl Violation for UnsortedImports {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/numpy/rules/deprecated_function.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::Expr;
 use ruff_text_size::Ranged;
@@ -37,7 +37,7 @@ pub struct NumpyDeprecatedFunction {
 }
 
 impl Violation for NumpyDeprecatedFunction {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/numpy/rules/deprecated_type_alias.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::Expr;
 use ruff_text_size::Ranged;
@@ -34,7 +34,7 @@ pub struct NumpyDeprecatedTypeAlias {
 }
 
 impl Violation for NumpyDeprecatedTypeAlias {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pandas_vet/rules/inplace_argument.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::helpers::is_const_true;
 use ruff_python_ast::parenthesize::parenthesized_range;
@@ -39,7 +39,7 @@ use crate::registry::AsRule;
 pub struct PandasUseOfInplaceArgument;
 
 impl Violation for PandasUseOfInplaceArgument {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pycodestyle/rules/lambda_assignment.rs

@@ -3,7 +3,7 @@ use ruff_python_ast::{
 };
 use ruff_text_size::{Ranged, TextRange};
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_codegen::Generator;
 use ruff_python_semantic::SemanticModel;
@@ -42,7 +42,7 @@ pub struct LambdaAssignment {
 }
 
 impl Violation for LambdaAssignment {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pydocstyle/rules/blank_after_summary.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_source_file::{UniversalNewlineIterator, UniversalNewlines};
 use ruff_text_size::Ranged;
@@ -47,7 +47,7 @@ pub struct BlankLineAfterSummary {
 }
 
 impl Violation for BlankLineAfterSummary {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pydocstyle/rules/no_surrounding_whitespace.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_source_file::NewlineWithTrailingNewline;
 use ruff_text_size::Ranged;
@@ -35,7 +35,7 @@ use crate::rules::pydocstyle::helpers::ends_with_backslash;
 pub struct SurroundingWhitespace;
 
 impl Violation for SurroundingWhitespace {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pydocstyle/rules/one_liner.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::str::{leading_quote, trailing_quote};
 use ruff_source_file::NewlineWithTrailingNewline;
@@ -37,7 +37,7 @@ use crate::registry::AsRule;
 pub struct FitsOnOneLine;
 
 impl Violation for FitsOnOneLine {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyflakes/rules/raise_not_implemented.rs

@@ -1,6 +1,6 @@
 use ruff_python_ast::{self as ast, Expr};
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_text_size::Ranged;
 
@@ -39,7 +39,7 @@ use crate::registry::AsRule;
 pub struct RaiseNotImplemented;
 
 impl Violation for RaiseNotImplemented {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyflakes/rules/repeated_keys.rs

@@ -2,7 +2,7 @@ use std::hash::BuildHasherDefault;
 
 use rustc_hash::{FxHashMap, FxHashSet};
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::comparable::ComparableExpr;
 use ruff_python_ast::parenthesize::parenthesized_range;
@@ -49,7 +49,7 @@ pub struct MultiValueRepeatedKeyLiteral {
 }
 
 impl Violation for MultiValueRepeatedKeyLiteral {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {
@@ -106,7 +106,7 @@ pub struct MultiValueRepeatedKeyVariable {
 }
 
 impl Violation for MultiValueRepeatedKeyVariable {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyflakes/rules/strings.rs

@@ -2,7 +2,7 @@ use std::string::ToString;
 
 use rustc_hash::FxHashSet;
 
-use ruff_diagnostics::{AlwaysFixableViolation, Diagnostic, Fix, FixKind, Violation};
+use ruff_diagnostics::{AlwaysFixableViolation, Diagnostic, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::{self as ast, Constant, Expr, Identifier, Keyword};
 use ruff_text_size::{Ranged, TextRange};
@@ -387,7 +387,7 @@ pub struct StringDotFormatExtraNamedArguments {
 }
 
 impl Violation for StringDotFormatExtraNamedArguments {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {
@@ -428,7 +428,7 @@ pub struct StringDotFormatExtraPositionalArguments {
 }
 
 impl Violation for StringDotFormatExtraPositionalArguments {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyflakes/rules/unused_import.rs

@@ -3,7 +3,7 @@ use std::borrow::Cow;
 use anyhow::Result;
 use rustc_hash::FxHashMap;
 
-use ruff_diagnostics::{Diagnostic, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_semantic::{AnyImport, Exceptions, Imported, NodeId, Scope};
 use ruff_text_size::{Ranged, TextRange};
@@ -67,7 +67,7 @@ pub struct UnusedImport {
 }
 
 impl Violation for UnusedImport {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyflakes/rules/unused_variable.rs

@@ -1,6 +1,6 @@
 use itertools::Itertools;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::helpers::contains_effect;
 use ruff_python_ast::parenthesize::parenthesized_range;
@@ -48,7 +48,7 @@ pub struct UnusedVariable {
 }
 
 impl Violation for UnusedVariable {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pylint/rules/manual_import_from.rs

@@ -1,7 +1,7 @@
 use ruff_python_ast::{self as ast, Alias, Identifier, Stmt};
 use ruff_text_size::{Ranged, TextRange};
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 
 use crate::checkers::ast::Checker;
@@ -33,7 +33,7 @@ pub struct ManualFromImport {
 }
 
 impl Violation for ManualFromImport {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pylint/rules/nested_min_max.rs

@@ -1,7 +1,7 @@
 use ruff_python_ast::{self as ast, Arguments, Expr, Keyword};
 use ruff_text_size::{Ranged, TextRange};
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_semantic::SemanticModel;
 
@@ -43,7 +43,7 @@ pub struct NestedMinMax {
 }
 
 impl Violation for NestedMinMax {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
 

crates/ruff_linter/src/rules/pylint/rules/sys_exit_alias.rs

@@ -1,6 +1,6 @@
 use ruff_python_ast::{self as ast, Expr};
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_text_size::Ranged;
 
@@ -43,7 +43,7 @@ pub struct SysExitAlias {
 }
 
 impl Violation for SysExitAlias {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyupgrade/rules/convert_named_tuple_functional_to_class.rs

@@ -1,6 +1,6 @@
 use log::debug;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::helpers::is_dunder;
 use ruff_python_ast::{
@@ -50,7 +50,7 @@ pub struct ConvertNamedTupleFunctionalToClass {
 }
 
 impl Violation for ConvertNamedTupleFunctionalToClass {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyupgrade/rules/convert_typed_dict_functional_to_class.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::helpers::is_dunder;
 use ruff_python_ast::{
@@ -47,7 +47,7 @@ pub struct ConvertTypedDictFunctionalToClass {
 }
 
 impl Violation for ConvertTypedDictFunctionalToClass {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyupgrade/rules/datetime_utc_alias.rs

@@ -1,6 +1,6 @@
 use ruff_python_ast::Expr;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_text_size::Ranged;
 
@@ -38,7 +38,7 @@ use crate::registry::AsRule;
 pub struct DatetimeTimezoneUTC;
 
 impl Violation for DatetimeTimezoneUTC {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyupgrade/rules/deprecated_import.rs

@@ -1,7 +1,7 @@
 use itertools::Itertools;
 use ruff_python_ast::{Alias, Stmt};
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::whitespace::indentation;
 use ruff_python_codegen::Stylist;
@@ -66,7 +66,7 @@ pub struct DeprecatedImport {
 }
 
 impl Violation for DeprecatedImport {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyupgrade/rules/f_strings.rs

@@ -3,7 +3,7 @@ use std::borrow::Cow;
 use anyhow::{Context, Result};
 use rustc_hash::FxHashMap;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::str::{leading_quote, trailing_quote};
 use ruff_python_ast::{self as ast, Constant, Expr, Keyword};
@@ -44,7 +44,7 @@ use crate::rules::pyupgrade::helpers::curly_escape;
 pub struct FString;
 
 impl Violation for FString {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyupgrade/rules/format_literals.rs

@@ -3,7 +3,7 @@ use libcst_native::{Arg, Expression};
 use once_cell::sync::Lazy;
 use regex::Regex;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::{self as ast, Expr};
 use ruff_python_codegen::Stylist;
@@ -46,7 +46,7 @@ use crate::rules::pyflakes::format::FormatSummary;
 pub struct FormatLiterals;
 
 impl Violation for FormatLiterals {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyupgrade/rules/open_alias.rs

@@ -1,6 +1,6 @@
 use ruff_python_ast::Expr;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_text_size::Ranged;
 
@@ -34,7 +34,7 @@ use crate::registry::AsRule;
 pub struct OpenAlias;
 
 impl Violation for OpenAlias {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyupgrade/rules/outdated_version_block.rs

@@ -1,7 +1,7 @@
 use std::cmp::Ordering;
 
 use anyhow::Result;
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::stmt_if::{if_elif_branches, BranchKind, IfElifBranch};
 use ruff_python_ast::whitespace::indentation;
@@ -51,7 +51,7 @@ pub struct OutdatedVersionBlock {
 }
 
 impl Violation for OutdatedVersionBlock {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyupgrade/rules/printf_string_formatting.rs

@@ -1,6 +1,6 @@
 use std::str::FromStr;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::str::{leading_quote, trailing_quote};
 use ruff_python_ast::whitespace::indentation;
@@ -68,7 +68,7 @@ use crate::rules::pyupgrade::helpers::curly_escape;
 pub struct PrintfStringFormatting;
 
 impl Violation for PrintfStringFormatting {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyupgrade/rules/replace_stdout_stderr.rs

@@ -1,6 +1,6 @@
 use anyhow::Result;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::{self as ast, Keyword};
 use ruff_text_size::Ranged;
@@ -40,7 +40,7 @@ use crate::registry::AsRule;
 pub struct ReplaceStdoutStderr;
 
 impl Violation for ReplaceStdoutStderr {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyupgrade/rules/type_of_primitive.rs

@@ -1,7 +1,7 @@
 use ruff_python_ast::{self as ast, Expr};
 
 use crate::fix::edits::pad;
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_text_size::Ranged;
 
@@ -37,7 +37,7 @@ pub struct TypeOfPrimitive {
 }
 
 impl Violation for TypeOfPrimitive {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyupgrade/rules/typing_text_str_alias.rs

@@ -1,6 +1,6 @@
 use ruff_python_ast::Expr;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_text_size::Ranged;
 
@@ -33,7 +33,7 @@ use crate::registry::AsRule;
 pub struct TypingTextStrAlias;
 
 impl Violation for TypingTextStrAlias {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyupgrade/rules/use_pep585_annotation.rs

@@ -1,6 +1,6 @@
 use ruff_python_ast::Expr;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::call_path::compose_call_path;
 use ruff_python_semantic::analyze::typing::ModuleMember;
@@ -56,7 +56,7 @@ pub struct NonPEP585Annotation {
 }
 
 impl Violation for NonPEP585Annotation {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyupgrade/rules/use_pep604_annotation.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::{self as ast, Constant, Expr, ExprContext, Operator};
 use ruff_python_semantic::analyze::typing::Pep604Operator;
@@ -45,7 +45,7 @@ use crate::registry::AsRule;
 pub struct NonPEP604Annotation;
 
 impl Violation for NonPEP604Annotation {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/pyupgrade/rules/use_pep695_type_alias.rs

@@ -1,5 +1,5 @@
 use ast::{Constant, ExprCall, ExprConstant};
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::{
     self as ast,
@@ -49,7 +49,7 @@ pub struct NonPEP695TypeAlias {
 }
 
 impl Violation for NonPEP695TypeAlias {
-    const FIX_KIND: FixKind = FixKind::Always;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Always;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/refurb/rules/delete_full_slice.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::{self as ast, Expr};
 use ruff_python_semantic::analyze::typing::{is_dict, is_list};
@@ -47,7 +47,7 @@ use crate::rules::refurb::helpers::generate_method_call;
 pub struct DeleteFullSlice;
 
 impl Violation for DeleteFullSlice {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/refurb/rules/print_empty_string.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::{self as ast, Constant, Expr};
 use ruff_python_codegen::Generator;
@@ -43,7 +43,7 @@ enum Reason {
 }
 
 impl Violation for PrintEmptyString {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/refurb/rules/reimplemented_starmap.rs

@@ -1,5 +1,5 @@
 use anyhow::{bail, Result};
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::comparable::ComparableExpr;
 use ruff_python_ast::{self as ast, Expr};
@@ -57,7 +57,7 @@ use crate::registry::AsRule;
 pub struct ReimplementedStarmap;
 
 impl Violation for ReimplementedStarmap {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/refurb/rules/repeated_append.rs

@@ -1,7 +1,7 @@
 use rustc_hash::FxHashMap;
 
 use ast::traversal;
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::{self as ast, Expr, Stmt};
 use ruff_python_codegen::Generator;
@@ -60,7 +60,7 @@ impl RepeatedAppend {
 }
 
 impl Violation for RepeatedAppend {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/refurb/rules/slice_copy.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::{self as ast, Expr};
 use ruff_python_semantic::analyze::typing::is_list;
@@ -39,7 +39,7 @@ use crate::rules::refurb::helpers::generate_method_call;
 pub struct SliceCopy;
 
 impl Violation for SliceCopy {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/refurb/rules/unnecessary_enumerate.rs

@@ -1,6 +1,6 @@
 use std::fmt;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast as ast;
 use ruff_python_ast::{Arguments, Constant, Expr, Int};
@@ -51,7 +51,7 @@ pub struct UnnecessaryEnumerate {
 }
 
 impl Violation for UnnecessaryEnumerate {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/ruff/rules/collection_literal_concatenation.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::{self as ast, Expr, ExprContext, Operator};
 use ruff_text_size::{Ranged, TextRange};
@@ -43,7 +43,7 @@ pub struct CollectionLiteralConcatenation {
 }
 
 impl Violation for CollectionLiteralConcatenation {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/ruff/rules/implicit_optional.rs

@@ -2,7 +2,7 @@ use std::fmt;
 
 use anyhow::Result;
 
-use ruff_diagnostics::{Diagnostic, Edit, Fix, FixKind, Violation};
+use ruff_diagnostics::{Diagnostic, Edit, Fix, FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 use ruff_python_ast::helpers::is_const_none;
 use ruff_python_ast::{self as ast, Constant, Expr, Operator, ParameterWithDefault, Parameters};
@@ -80,7 +80,7 @@ pub struct ImplicitOptional {
 }
 
 impl Violation for ImplicitOptional {
-    const FIX_KIND: FixKind = FixKind::Sometimes;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::Sometimes;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/rules/ruff/rules/invalid_pyproject_toml.rs

@@ -1,4 +1,4 @@
-use ruff_diagnostics::{FixKind, Violation};
+use ruff_diagnostics::{FixAvailability, Violation};
 use ruff_macros::{derive_message_formats, violation};
 
 /// ## What it does
@@ -36,7 +36,7 @@ pub struct InvalidPyprojectToml {
 }
 
 impl Violation for InvalidPyprojectToml {
-    const FIX_KIND: FixKind = FixKind::None;
+    const FIX_AVAILABILITY: FixAvailability = FixAvailability::None;
 
     #[derive_message_formats]
     fn message(&self) -> String {

crates/ruff_linter/src/test.rs

@@ -9,7 +9,7 @@ use anyhow::Result;
 use itertools::Itertools;
 use rustc_hash::FxHashMap;
 
-use ruff_diagnostics::{Diagnostic, FixKind};
+use ruff_diagnostics::{Diagnostic, FixAvailability};
 use ruff_python_ast::PySourceType;
 use ruff_python_codegen::Stylist;
 use ruff_python_index::Indexer;
@@ -239,15 +239,15 @@ Source with applied fixes:
             let fixable = diagnostic.fix.is_some();
 
             match (fixable, rule.fixable()) {
-                (true, FixKind::Sometimes | FixKind::Always)
-                | (false, FixKind::None | FixKind::Sometimes) => {
+                (true, FixAvailability::Sometimes | FixAvailability::Always)
+                | (false, FixAvailability::None | FixAvailability::Sometimes) => {
                     // Ok
                 }
-                (true, FixKind::None) => {
-                    panic!("Rule {rule:?} is marked as non-fixable but it created a fix. Change the `Violation::FIX_KIND` to either `FixKind::Sometimes` or `FixKind::Always`");
+                (true, FixAvailability::None) => {
+                    panic!("Rule {rule:?} is marked as non-fixable but it created a fix. Change the `Violation::FIX_AVAILABILITY` to either `FixAvailability::Sometimes` or `FixAvailability::Always`");
                 },
-                (false, FixKind::Always) => {
-                    panic!("Rule {rule:?} is marked to always-fixable but the diagnostic has no fix. Either ensure you always emit a fix or change `Violation::FIX_KINDd` to either `FixKind::Sometimes` or `FixKind::None")
+                (false, FixAvailability::Always) => {
+                    panic!("Rule {rule:?} is marked to always-fixable but the diagnostic has no fix. Either ensure you always emit a fix or change `Violation::FIX_AVAILABILITY` to either `FixAvailability::Sometimes` or `FixAvailability::None")
                 }
             }
 

crates/ruff_macros/src/map_codes.rs

@@ -405,7 +405,7 @@ fn register_rules<'a>(input: impl Iterator<Item = &'a Rule>) -> TokenStream {
         rule_message_formats_match_arms
             .extend(quote! {#(#attrs)* Self::#name => <#path as ruff_diagnostics::Violation>::message_formats(),});
         rule_fixable_match_arms.extend(
-            quote! {#(#attrs)* Self::#name => <#path as ruff_diagnostics::Violation>::FIX_KIND,},
+            quote! {#(#attrs)* Self::#name => <#path as ruff_diagnostics::Violation>::FIX_AVAILABILITY,},
         );
         rule_explanation_match_arms
             .extend(quote! {#(#attrs)* Self::#name => #path::explanation(),});
@@ -448,7 +448,7 @@ fn register_rules<'a>(input: impl Iterator<Item = &'a Rule>) -> TokenStream {
             }
 
             /// Returns the fix status of this rule.
-            pub const fn fixable(&self) -> ruff_diagnostics::FixKind {
+            pub const fn fixable(&self) -> ruff_diagnostics::FixAvailability {
                 match self { #rule_fixable_match_arms }
             }
         }