1 files changed, 25 insertions, 0 deletions
diff --git a/nix/ci.nix b/nix/ci.nix
new file mode 100644
index 0000000..38293ce
--- /dev/null
+++ b/nix/ci.nix
@@ -0,0 +1,25 @@
+{
+  perSystem = {
+    pkgs,
+    lib,
+    config,
+    ...
+  }: {
+    /*
+    require packages, checks, and devShells for ci to be considered a success
+
+    also thanks DetSys for showing me i don't need to use runCommand, symlinkJoin, or linkFarm!
+    https://determinate.systems/posts/hydra-deployment-source-of-truth
+    */
+
+    packages.ciGate = pkgs.writeText "ci-gate" ''
+      ${
+        lib.concatMapStringsSep "\n" (s: toString (builtins.attrValues s)) [
+          config.checks
+          config.devShells
+          (builtins.removeAttrs config.packages ["default" "ciGate"])
+        ]
+      }
+    '';
+  };
+}