diff --git a/alvr/xtask/src/dependencies.rs b/alvr/xtask/src/dependencies.rs
index 379719822a..12af67d585 100644
--- a/alvr/xtask/src/dependencies.rs
+++ b/alvr/xtask/src/dependencies.rs
@@ -264,7 +264,7 @@ pub fn build_ffmpeg_linux(nvenc_flag: bool, deps_path: &Path) {
             ];
 
             let env_vars = format!(
-                "PKG_CONFIG_PATH='{}'",
+                "PKG_CONFIG_PATH=$PKG_CONFIG_PATH:'{}'",
                 header_build_dir.join("lib/pkgconfig").display()
             );
             let flags_combined = flags.join(" ");
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000000..671ce40a43
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,19 @@
+{ pkgs ? import <nixpkgs> { } }:
+pkgs.mkShell.override { stdenv = pkgs.cudaPackages.backendStdenv; } {
+  nativeBuildInputs = [ pkgs.pkg-config ];
+  buildInputs = [
+    pkgs.cudaPackages.cuda_nvcc
+    pkgs.cudaPackages.cuda_cudart
+    pkgs.cudaPackages.libnpp
+
+    pkgs.nasm
+
+    pkgs.vulkan-headers
+    pkgs.libva
+    pkgs.libdrm
+  ];
+
+  shellHook = ''
+    unset AS
+  '';
+}