- Restore system shaderc support
- Detect system shaderc on BSDs

--- voxygen/Cargo.toml.orig	2025-08-14 15:14:34 UTC
+++ voxygen/Cargo.toml
@@ -48,7 +47,7 @@ default-publish = [
     "discord",
     "simd",
 ]
-default = ["default-publish", "hot-reloading", "shaderc-from-source", "egui-ui"]
+default = ["default-publish", "hot-reloading", "egui-ui"]
 
 [dependencies]
 client = { package = "veloren-client", path = "../client" }
--- cargo-crates/shaderc-sys-0.10.1/build/build.rs.orig	1970-01-01 00:00:00 UTC
+++ cargo-crates/shaderc-sys-0.10.1/build/build.rs
@@ -357,7 +357,7 @@ fn main() {
             }
         } {
             match (target_os.as_str(), target_env.as_str()) {
-                ("linux" | "android", _) => {
+                ("linux" | "android" | "dragonfly" | "freebsd" | "netbsd" | "openbsd", _) => {
                     println!("cargo:rustc-link-search=native={search_dir_str}");
                     println!("cargo:rustc-link-lib={lib_kind}={lib_name}");
                     return;