diff --git a/.build.yml b/.build.yml
new file mode 100644
index 0000000..3cd10aa
--- /dev/null
+++ b/.build.yml
@@ -0,0 +1,15 @@
+---
+image: nixos/unstable
+packages:
+ - nixos.ldc
+environment:
+  CFLAGS: "-Oz -de -unittest -main -run"
+  NIX_CONFIG: "experimental-features = nix-command flakes"
+sources:
+  - "https://git.sr.ht/~jeremy/initial"
+tasks:
+  - ldc: |
+      ldc2 $CFLAGS initial/initial.d
+  - ldc-1_30_0: |
+      nix build -o ldc-1.30.0 --accept-flake-config github:PetarKirov/dlang.nix#ldc-1_30_0
+      ldc-1.30.0/bin/ldc2 $CFLAGS initial/initial.d