diff --git a/packaging/nix/0-Makefile-no-vendor.patch b/packaging/nix/0-Makefile-no-vendor.patch
deleted file mode 100644
index 852752e7..00000000
--- a/packaging/nix/0-Makefile-no-vendor.patch
+++ /dev/null
@@ -1,24 +0,0 @@
-diff --git a/Makefile.in b/Makefile.in
-index 9324abc..a293409 100644
---- a/Makefile.in
-+++ b/Makefile.in
-@@ -21,7 +21,7 @@ FLATPAK ?= xfalse
- 
- .PHONY: all
- ifeq ($(FLATPAK), xtrue)
--all: umu-dist umu-launcher umu-vendored
-+all: umu-dist umu-launcher
- endif
- 
- .PHONY: install
-@@ -30,8 +30,8 @@ SOURCE_DATE_EPOCH = $(shell LC_ALL=C date --date='@1580601600')
- all: zipapp
- install: zipapp-install
- else
--all: umu-dist umu-docs umu-launcher umu-vendored
--install: umu-install umu-launcher-install umu-vendored-install
-+all: umu-dist umu-docs umu-launcher
-+install: umu-install umu-launcher-install
- endif
- 
- 
diff --git a/packaging/nix/unwrapped.nix b/packaging/nix/unwrapped.nix
index e4526628..f04f58b6 100644
--- a/packaging/nix/unwrapped.nix
+++ b/packaging/nix/unwrapped.nix
@@ -20,13 +20,28 @@ umu-launcher-unwrapped.overridePythonAttrs (prev: {
   #   https://github.com/Open-Wine-Components/umu-launcher/pull/289
   # - The other is backporting:
   #   https://github.com/Open-Wine-Components/umu-launcher/pull/343
-  patches = [
-    # Remove `umu-vendored` from the `all` target
-    # This causes an error when building vendored dependencies:
-    # python3 -m pip install urllib3 -t builddir
-    # => No module named pip
-    ./0-Makefile-no-vendor.patch
-  ];
+  patches = [];
+
+  # The `umu-vendored` target needs submodules. However, we don't actually need
+  # this target or those submodules anyway, since we add `pyzstd` as a nix package
+  #
+  # As a temporary solution, we explicitly specify the supported build targets:
+  buildFlags =
+    (prev.buildFlags or [])
+    ++ [
+      "umu-dist"
+      "umu-launcher"
+    ];
+
+  # Same issue for install targets
+  installTargets =
+    (prev.installTargets or [])
+    ++ [
+      "umu-dist"
+      "umu-docs"
+      "umu-launcher"
+      "umu-delta"
+    ];
 
   nativeBuildInputs =
     (prev.nativeBuildInputs or [])