3 files changed, 76 insertions, 21 deletions
diff --git a/.github/workflows/build-modpack.yml b/.github/workflows/build-modpack.yml
new file mode 100644
index 0000000..aace7f9
--- /dev/null
+++ b/.github/workflows/build-modpack.yml
@@ -0,0 +1,26 @@
+name: Build modpack
+
+on:
+  push:
+    paths:
+      # only run when prismlauncher modpack files are changed
+      - nix/files/**
+  workflow_dispatch:
+
+jobs:
+  build-modpack:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: cachix/install-nix-action@v20
+
+      - name: build
+        run: |
+          nix build
+
+      - name: upload
+        uses: actions/upload-artifact@v3
+        with:
+          name: getchoo-modpack.zip
+          path: ${{ github.workspace }}/result/*
diff --git a/.github/workflows/update-checksums.yml b/.github/workflows/update-checksums.yml
new file mode 100644
index 0000000..7a5b9a3
--- /dev/null
+++ b/.github/workflows/update-checksums.yml
@@ -0,0 +1,33 @@
+name: Update mod checksums
+
+on:
+  push:
+    paths:
+      # only run when mod files are changed
+      - mods/**
+  workflow_dispatch:
+  workflow_run:
+    workflows: ["Update mods"]
+    types:
+      - completed
+
+permissions:
+  contents: write
+
+jobs:
+  build-modpack:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - uses: cachix/install-nix-action@v20
+
+      - name: generate new checksums
+        run: |
+          nix run --impure .#generate-checksums
+
+      - name: commit changes
+        uses: EndBug/add-and-commit@v9
+        with:
+          default_author: github_actions
+          message: "chore(flake): update mod checksums"
diff --git a/.github/workflows/update-mods.yml b/.github/workflows/update-mods.yml
index 79f6b71..03c3df4 100644
--- a/.github/workflows/update-mods.yml
+++ b/.github/workflows/update-mods.yml
@@ -1,31 +1,27 @@
 name: Update mods
+
 on:
-  workflow_dispatch:
   schedule:
-    - cron: '0 0 * * *'
+    # run daily at 0:00 utc
+    - cron: "0 0 * * *"
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
 jobs:
   update-mods:
     runs-on: ubuntu-latest
     steps:
-      - name: get packwiz
-        run: |
-          curl -fsSLo ~/packwiz.zip https://nightly.link/packwiz/packwiz/workflows/go/main/Linux%2064-bit%20x86.zip
-          unzip -d ~ ~/packwiz.zip
-          chmod 755 ~/packwiz
       - uses: actions/[email protected]
-      - name: update mods
-        run: |
-          echo "y" | ~/packwiz update --all
-      - name: check for changes
-        id: git-check
-        run: |
-          echo ::set-output name=modified::$(if git status --porcelain | grep -E 'pack.toml|index.toml|mods\/' > /dev/null; then echo "true"; else echo "false"; fi)
-      - name: commit updates
-        if: steps.git-check.outputs.modified == 'true'
+      - uses: cachix/install-nix-action@v20
+
+      - name: update
         run: |
-          git config --global user.name 'github-actions[bot]'
-          git config --global user.email 'github-actions[bot]@users.noreply.github.com'
+          echo "y" | nix run nixpkgs#packwiz -- update --all
 
-          git add mods/ index.toml pack.toml
-          git commit -m "chore: update mods"
-          git push
+      - name: commit changes
+        uses: EndBug/add-and-commit@v9
+        with:
+          default_author: github_actions
+          message: "chore: update mods"