From 5c75c3988311d31c06c00ef9f9ee6eee1c882594 Mon Sep 17 00:00:00 2001
From: Jon Seager <jon@sgrs.uk>
Date: Fri, 6 Feb 2026 18:05:16 +0000
Subject: [PATCH] perf(build): add release profile, lld linker, and defer
 script tags

- Add [profile.release] with thin LTO and symbol stripping
- Configure lld linker via .cargo/config.toml for faster linking
- Add clang and lld to Nix devShell
- Add defer attribute to component script tags to unblock HTML parsing
---
 .cargo/config.toml  | 5 +++++
 Cargo.toml          | 4 ++++
 flake.nix           | 2 ++
 templates/base.html | 4 ++--
 4 files changed, 13 insertions(+), 2 deletions(-)
 create mode 100644 .cargo/config.toml

diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 0000000..f973e9d
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,5 @@
+[target.x86_64-unknown-linux-gnu]
+rustflags = ["-C", "link-arg=-fuse-ld=lld"]
+
+[target.aarch64-unknown-linux-gnu]
+rustflags = ["-C", "link-arg=-fuse-ld=lld"]
diff --git a/Cargo.toml b/Cargo.toml
index 18150f2..5a309ec 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -54,6 +54,10 @@ name = "cli"
 path = "tests/cli/main.rs"
 harness = true
 
+[profile.release]
+lto = "thin"
+strip = true
+
 [profile.test]
 # Run CLI tests serially to share single server instance
 opt-level = 0
diff --git a/flake.nix b/flake.nix
index 660832c..185f9af 100644
--- a/flake.nix
+++ b/flake.nix
@@ -111,7 +111,9 @@
               ]
               ++ (with pkgs; [
                 cargo-watch
+                clang
                 flyctl
+                lld
                 nil
                 nixfmt
                 openssl
diff --git a/templates/base.html b/templates/base.html
index 5aa47b3..68548bd 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -20,8 +20,8 @@
       type="module"
       src="https://cdn.jsdelivr.net/gh/starfederation/datastar@1.0.0-RC.6/bundles/datastar.js"
     ></script>
-    <script src="/components/photo-capture.js"></script>
-    <script src="/components/searchable-select.js"></script>
+    <script defer src="/components/photo-capture.js"></script>
+    <script defer src="/components/searchable-select.js"></script>
     {% block head %}{% endblock %}
     <script>
       document.addEventListener("DOMContentLoaded", () => {