ci: run on nix-flakes

Bumps [pnpm/action-setup](https://github.com/pnpm/action-setup) from 2 to 3.
- [Release notes](https://github.com/pnpm/action-setup/releases)
- [Commits](https://github.com/pnpm/action-setup/compare/v2...v3)

---
updated-dependencies:
- dependency-name: pnpm/action-setup
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.forgejo/workflows/test.yml

@@ -0,0 +1,25 @@
+name: "Test"
+
+on:
+  push:
+    branches: ["main"]
+  workflow_call:
+  workflow_dispatch:
+
+jobs:
+  test-cache:
+    runs-on: nix-flakes
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Setup Attic Cache
+        uses: ./
+        with:
+          endpoint: ${{ vars.ATTIC_ENDPOINT }}
+          cache: ${{ vars.ATTIC_CACHE }}
+          token: ${{ secrets.ATTIC_TOKEN }}
+
+      - name: Build Nix Package
+        run: nix-build test.nix

.github/dependabot.yml

@@ -1,7 +0,0 @@
-version: 2
-
-updates:
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: "weekly"

.github/workflows/release.yml

@@ -1,31 +0,0 @@
-name: Release
-
-on:
-  release:
-    types: [published, edited]
-
-jobs:
-  release:
-    runs-on: ubuntu-latest
-
-    permissions:
-      contents: write
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.release.tag_name }}
-
-      - uses: pnpm/action-setup@v2
-      - uses: actions/setup-node@v4
-        with:
-          cache: pnpm
-          cache-dependency-path: pnpm-lock.yaml
-
-      - name: Build
-        run: pnpm install && pnpm build
-
-      - uses: JasonEtco/build-and-tag-action@v2
-        env:
-          GITHUB_TOKEN: ${{ github.token }}

.github/workflows/test.yml

@@ -1,41 +0,0 @@
-name: "Test"
-
-on:
-  push:
-    branches: ["main"]
-  workflow_call:
-  workflow_dispatch:
-
-jobs:
-  test-cache:
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macos-latest]
-
-    runs-on: ${{ matrix.os }}
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
-
-      - uses: pnpm/action-setup@v2
-      - uses: actions/setup-node@v4
-        with:
-          cache: pnpm
-          cache-dependency-path: pnpm-lock.yaml
-
-      - name: Build
-        run: pnpm install && pnpm build
-
-      - name: Install Nix
-        uses: DeterminateSystems/nix-installer-action@v7
-
-      - name: Setup Attic Cache
-        uses: ./
-        with:
-          endpoint: ${{ secrets.ATTIC_ENDPOINT }}
-          cache: ${{ secrets.ATTIC_CACHE }}
-          token: ${{ secrets.ATTIC_TOKEN }}
-
-      - name: Build Nix Package
-        run: nix-build test.nix

src/index.ts

@@ -1,12 +1,16 @@
-import { install } from "./stages/install";
+import { install, isInstalled } from "./stages/install";
 import { configure } from "./stages/configure";
 import { push } from "./stages/push";
-import { getState, saveState } from "@actions/core";
+import { getState, saveState, info } from "@actions/core";
 
 const isPost = !!getState("isPost");
 
 const main = async () => {
-	await install();
+	if (await isInstalled()) {
+		info("Skipping attic installation because it is already installed");
+	} else {
+		await install();
+	}
 	await configure();
 };
 

src/stages/install.ts

@@ -33,3 +33,9 @@ export const install = async () => {
 
 	core.endGroup();
 };
+
+export const isInstalled = async () => {
+	let return_code = await exec("attic", ["-V"]);
+	core.info(`Attic command returned code ${return_code}`);
+	return return_code === 0;
+};

src/utils.ts

@@ -6,5 +6,12 @@ export const saveStorePaths = async () => {
 	await exec("sh", ["-c", "nix path-info --all --json > /tmp/store-paths"]);
 };
 export const getStorePaths = async () => {
-	return (JSON.parse(await readFile("/tmp/store-paths", "utf8")) as { path: string }[]).map((path) => path.path);
+	const rawStorePaths = JSON.parse(await readFile("/tmp/store-paths", "utf8")) as { path: string }[];
+
+	// compatibility with Nix 2.18
+	if (Array.isArray(rawStorePaths)) {
+		return rawStorePaths.map((path) => path.path); 
+	};
+
+	return Object.keys(rawStorePaths);
 };