Eliminate assets crate

crates/zed/build.rs

@@ -1,3 +1,5 @@
+use std::process::Command;
+
 fn main() {
     println!("cargo:rustc-env=MACOSX_DEPLOYMENT_TARGET=10.15.7");
 
@@ -21,4 +23,32 @@ fn main() {
 
     // Register exported Objective-C selectors, protocols, etc
     println!("cargo:rustc-link-arg=-Wl,-ObjC");
+
+    // Install dependencies for theme-generation
+    let output = Command::new("npm")
+        .current_dir("../../styles")
+        .args(["install", "--no-save"])
+        .output()
+        .expect("failed to run npm");
+    if !output.status.success() {
+        panic!(
+            "failed to install theme dependencies {}",
+            String::from_utf8_lossy(&output.stderr)
+        );
+    }
+
+    // Regenerate themes
+    let output = Command::new("npm")
+        .current_dir("../../styles")
+        .args(["run", "build"])
+        .output()
+        .expect("failed to run npm");
+    if !output.status.success() {
+        panic!(
+            "build script failed {}",
+            String::from_utf8_lossy(&output.stderr)
+        );
+    }
+
+    println!("cargo:rerun-if-changed=../../styles/src");
 }