Init build support

.drone.jsonnet

@@ -0,0 +1,40 @@
+local Pipeline(channel) = {
+  kind: "pipeline",
+  type: "docker",
+  name: channel,
+  environment: {
+    NUR_REPO: "xeals",
+    // NIX_PATH: "nixpkgs=channel:" + channel,
+    CACHIX_CACHE: "xeals",
+    CACHIX_SIGNING_KEY: { from_secret: "cachix_key" },
+  },
+  steps: [
+    {
+      name: "build",
+      image: "nixos/nix",
+      commands: [
+        "nix-channel --add https://nixos.org/channels/" + channel + " nixos",
+        "nix-channel --update",
+        "nix-build ci.nix -A buildOutputs",
+        "nix eval -f default.nix 'lib'",
+        "nix eval -f default.nix 'modules'",
+        "nix eval -f default.nix 'overlays'"
+      ]
+    },
+    {
+      name: "deploy",
+      image: "nixpkgs/cachix",
+      commands: [
+        'nix-build ci.nix -A cacheOutputs | cachix push "${CACHIX_CACHE}"'//,
+        // 'if [[ "cron" != "${DRONE_BUILD_EVENT}" && -z "${DRONE_PULL_REQUEST}" && "master" = "${DRONE_BRANCH}" ]]; then
+        //   curl -XPOST "https://nur-update.herokuapp.com/update?repo=${NUR_REPO}"; fi'
+      ]
+    }
+  ]
+};
+
+[
+  Pipeline("nixpkgs-unstable"),
+  Pipeline("nixos-unstable"),
+  Pipeline("nixos-20.03"),
+]