1 files changed, 35 insertions, 0 deletions
diff --git a/ci.nix b/ci.nix
new file mode 100644
index 0000000..c2d3ae6
--- /dev/null
+++ b/ci.nix
@@ -0,0 +1,35 @@
+{self, ...}: {
+  perSystem = {
+    lib,
+    pkgs,
+    system,
+    config,
+    ...
+  }: {
+    packages = let
+      allConfigurations = [
+        "nixosConfigurations"
+        "darwinConfigurations"
+        "homeConfigurations"
+      ];
+
+      configurations = lib.pipe allConfigurations [
+        (configs: lib.getAttrs configs self)
+        builtins.attrValues
+        (lib.concatMap builtins.attrValues)
+        (lib.filter (deriv: deriv.pkgs.system == system))
+        (map (deriv: deriv.config.system.build.toplevel or deriv.activationPackage))
+      ];
+
+      required = [
+        configurations
+        (builtins.attrValues config.checks)
+        (builtins.attrValues config.devShells)
+      ];
+    in {
+      ciGate = pkgs.writeText "ci-gate" ''
+        ${lib.concatMapStringsSep "\n" toString required}
+      '';
+    };
+  };
+}