diff --git a/.yamlfmt.yaml b/.yamlfmt.yaml
new file mode 100644
index 0000000..5994085
--- /dev/null
+++ b/.yamlfmt.yaml
@@ -0,0 +1,5 @@
+---
+formatter:
+  include_document_start: true
+  retain_line_breaks_single: true
+  type: basic
diff --git a/build-configs.yaml b/build-configs.yaml
new file mode 100644
index 0000000..129f333
--- /dev/null
+++ b/build-configs.yaml
@@ -0,0 +1,19 @@
+---
+name: atdc
+template: drupal
+parameters:
+  flake:
+    devshell:
+      packages:
+        - php82
+        - php82Packages.composer
+
+  git:
+    ignore:
+      - '!/_lessons/**'
+      - '!/phpstan.neon'
+      - '!/tests/**'
+
+  experimental:
+    createTmuxStartupFile: true
+    createInclusiveGitIgnoreFile: true
diff --git a/build.yaml b/build.yaml
deleted file mode 100644
index 032fa9f..0000000
--- a/build.yaml
+++ /dev/null
@@ -1,19 +0,0 @@
-name: atdc
-type: drupal
-language: php
-
-flake:
-  devshell:
-    packages:
-      - php82
-      - php82Packages.composer
-
-git:
-  ignore:
-    - '!/_lessons/**'
-    - '!/phpstan.neon'
-    - '!/tests/**'
-
-experimental:
-  createTmuxStartupFile: true
-  createInclusiveGitIgnoreFile: true