diff --git a/flake.nix b/flake.nix
index 0bb41e1..ec00a82 100644
--- a/flake.nix
+++ b/flake.nix
@@ -562,7 +562,7 @@
              sed -i "s|@DATE@|$(date +'%Y-%m-%d')|g" qt-ifw/config/config.xml qt-ifw/packages/com.msys2.root/meta/package.xml ;
              sed -i "s|@VERSION@|$(date +'%Y%m%d')|g" qt-ifw/config/config.xml qt-ifw/packages/com.msys2.root/meta/package.xml ;
 
-             7z a -mx9 -md128m "qt-ifw/packages/com.msys2.root/data/msys64.7z" "msys2_artiq_image/"*
+             7z a -mx9 -md128m "qt-ifw/packages/com.msys2.root/data/msys64.7z" "$msys2_artiq_image/"*
              ${pkgs.wineWowPackages.stable}/bin/wine64 $msys2_qt_ifw/mingw64/bin/binarycreator.exe \
                    -t "$msys2_qt_ifw/mingw64/bin/installerbase.exe" \
                    -p "qt-ifw/packages" \
diff --git a/msys2/artiq_dep_packages.nix b/msys2/artiq_dep_packages.nix
index a5e6841..afe9ef7 100644
--- a/msys2/artiq_dep_packages.nix
+++ b/msys2/artiq_dep_packages.nix
@@ -486,6 +486,12 @@
       sha256 = "1fc4pbzkm9wc2i874vfaxbin2p7bryx1yan1n0vvzddr747qxi21";
     })
 
+    (pkgs.fetchurl {
+      url = "https://mirror.msys2.org/mingw/mingw64/mingw-w64-x86_64-llvm-18.1.4-1-any.pkg.tar.zst";
+      name = "mingw-w64-x86_64-llvm";
+      sha256 = "0446wv29vp1pld6drjaw1lr93lijcvn6l66jj4r5m1gyrf07jhlh";
+    })
+
     (pkgs.fetchurl {
       url = "https://mirror.msys2.org/mingw/mingw64/mingw-w64-x86_64-python-attrs-23.2.0-1-any.pkg.tar.zst";
       name = "mingw-w64-x86_64-python-attrs";
diff --git a/msys2/artiq_deps.txt b/msys2/artiq_deps.txt
index bf9d716..20161a0 100644
--- a/msys2/artiq_deps.txt
+++ b/msys2/artiq_deps.txt
@@ -14,3 +14,4 @@ mingw-w64-x86_64-python-llvmlite
 mingw-w64-x86_64-python-levenshtein
 mingw-w64-x86_64-python-lmdb
 mingw-w64-x86_64-lld
+mingw-w64-x86_64-llvm