Extract a language crate

crates/workspace/Cargo.toml

@@ -8,7 +8,7 @@ test-support = [
     "client/test-support",
     "project/test-support",
     "tree-sitter",
-    "tree-sitter-rust"
+    "tree-sitter-rust",
 ]
 
 [dependencies]
@@ -16,6 +16,7 @@ buffer = { path = "../buffer" }
 client = { path = "../client" }
 editor = { path = "../editor" }
 gpui = { path = "../gpui" }
+language = { path = "../language" }
 project = { path = "../project" }
 theme = { path = "../theme" }
 anyhow = "1.0.38"

crates/workspace/src/items.rs

@@ -1,9 +1,9 @@
 use super::{Item, ItemView};
 use crate::Settings;
 use anyhow::Result;
-use buffer::{Buffer, File as _};
 use editor::{Editor, EditorSettings, Event};
 use gpui::{fonts::TextStyle, AppContext, ModelHandle, Task, ViewContext};
+use language::{Buffer, File as _};
 use postage::watch;
 use project::{ProjectPath, Worktree};
 use std::path::Path;

crates/workspace/src/lib.rs

@@ -5,7 +5,7 @@ pub mod settings;
 pub mod sidebar;
 
 use anyhow::Result;
-use buffer::{Buffer, LanguageRegistry};
+use language::{Buffer, LanguageRegistry};
 use client::{Authenticate, ChannelList, Client, UserStore};
 use gpui::{
     action, elements::*, json::to_string_pretty, keymap::Binding, platform::CursorStyle,
@@ -271,8 +271,8 @@ impl WorkspaceParams {
     #[cfg(any(test, feature = "test-support"))]
     pub fn test(cx: &mut MutableAppContext) -> Self {
         let mut languages = LanguageRegistry::new();
-        languages.add(Arc::new(buffer::Language::new(
-            buffer::LanguageConfig {
+        languages.add(Arc::new(language::Language::new(
+            language::LanguageConfig {
                 name: "Rust".to_string(),
                 path_suffixes: vec!["rs".to_string()],
                 ..Default::default()