diff --git a/PKGBUILD b/PKGBUILD
index 40f2798..5ece8ec 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -13,7 +13,7 @@ url="https://git.cbsk-tech.de/Christoph/GitLite"
 license=('MIT')
 depends=('webkit2gtk-4.1' 'gtk3' 'git' 'hicolor-icon-theme' 'libappindicator-gtk3' 'librsvg' 'xdotool')
 makedepends=('rust' 'nodejs' 'npm')
-options=('!lto')
+options=('!lto' '!debug')
 
 source=()
 sha256sums=()
@@ -26,6 +26,16 @@ pkgver() {
 
 build() {
   cd "$startdir"
+
+  # mistralrs-core is large enough that the regular release profile (thin LTO,
+  # one codegen unit and Arch debug flags) can exhaust memory in the LXC build
+  # runner. Keep the package optimized while bounding peak compiler memory.
+  export CARGO_BUILD_JOBS=1
+  export CARGO_PROFILE_RELEASE_OPT_LEVEL=2
+  export CARGO_PROFILE_RELEASE_LTO=false
+  export CARGO_PROFILE_RELEASE_CODEGEN_UNITS=8
+  export CARGO_PROFILE_RELEASE_DEBUG=0
+
   npm ci
   # Build through the Tauri CLI (not a raw `cargo build --release`): it enables
   # the `custom-protocol` cargo feature that makes the binary load the embedded