Don't follow package links by default

CHANGELOG.md

@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Fixed
+
+- Avoid trying to parse most of the TeX distro when building the dependency graph. Add `texlab.experimental.followPackageLinks` setting to allow re-enabling the old behavior
+  ([#986](https://github.com/latex-lsp/texlab/issues/986))
+
 ## [5.12.0] - 2023-12-03
 
 ### Added

crates/base-db/src/graph.rs

@@ -76,6 +76,12 @@ impl<'a> Graph<'a> {
             return;
         };
 
+        let uri = source.uri.as_str();
+        let is_pkg = uri.ends_with(".sty") || uri.ends_with(".cls");
+        if is_pkg && !self.workspace.config().syntax.follow_package_links {
+            return;
+        }
+
         for link in &data.semantics.links {
             self.add_link(source, base_dir, link);
         }

crates/parser/src/config.rs

@@ -2,6 +2,7 @@ use rustc_hash::FxHashSet;
 
 #[derive(Debug)]
 pub struct SyntaxConfig {
+    pub follow_package_links: bool,
     pub math_environments: FxHashSet<String>,
     pub enum_environments: FxHashSet<String>,
     pub verbatim_environments: FxHashSet<String>,
@@ -31,6 +32,7 @@ impl Default for SyntaxConfig {
             .collect();
 
         Self {
+            follow_package_links: false,
             math_environments,
             enum_environments,
             verbatim_environments,

crates/syntax/src/bibtex/kind.rs

@@ -34,8 +34,6 @@ pub enum SyntaxKind {
     ROOT,
 }
 
-pub use SyntaxKind::*;
-
 impl From<SyntaxKind> for rowan::SyntaxKind {
     fn from(kind: SyntaxKind) -> Self {
         Self(kind as u16)

crates/texlab/src/server/options.rs

@@ -124,6 +124,7 @@ pub struct RegexPattern(#[serde(with = "serde_regex")] pub Regex);
 #[serde(rename_all = "camelCase")]
 #[serde(default)]
 pub struct ExperimentalOptions {
+    pub follow_package_links: bool,
     pub math_environments: Vec<String>,
     pub enum_environments: Vec<String>,
     pub verbatim_environments: Vec<String>,