Add plutus-tx-template Release Instructions and GH Workflow (#5952)

.github/workflows/haddock.yml

@@ -18,7 +18,7 @@ jobs:
           nix_conf: |
             experimental-features = nix-command flakes
             accept-flake-config = true
-      - name: Build haddock site
+      - name: Build Haddock Site
         run: |
           nix build .#combined-haddock
           mkdir dist

.github/workflows/plutus-tx-template.yml

@@ -0,0 +1,58 @@
+# This workflows ensures that the plutus-tx-template repository stays working 
+# even if there are changes in plutus. It checks out both the current commit of 
+# plutus and the master branch of plutus-tx-template. Then, it creates a 
+# cabal.project.local for plutus-tx-template that adjusts the plutus version. 
+# Finally, it double-checks that everything still builds correctly using cabal
+# inside the devx shell.
+
+name: Plutus Tx Template
+
+on:
+  pull_request:
+
+jobs:
+  plutus-tx-template:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+
+      - name: Checkout plutus-tx-template
+        uses: actions/checkout@v4.1.4
+        with: 
+          repository: IntersectMBO/plutus-tx-template
+          path: plutus-tx-template 
+
+      - name: Checkout plutus
+        uses: actions/checkout@v4.1.4
+        with: 
+          path: plutus-tx-template/plutus
+
+      - name: Write cabal.project.local
+        uses: DamianReeves/write-file-action@v1.3
+        with:
+          path: plutus-tx-template/cabal.project.local
+          write-mode: overwrite
+          contents: |
+            packages: 
+              plutus/plutus-tx
+              plutus/plutus-tx-plugin
+              plutus/plutus-core
+              plutus/plutus-ledger-api
+              plutus/prettyprinter-configurable
+            
+            allow-newer:
+                plutus-tx
+              , plutus-tx-plugin
+              , plutus-core
+              , plutus-ledger-api 
+              , prettyprinter-configurable
+          
+      - name: Build Project With Docker
+        run: |
+          cd plutus-tx-template 
+          ls -la 
+          docker run \
+            -v ./.:/workspaces/plutus-tx-template \
+            -w /workspaces/plutus-tx-template \
+            -i ghcr.io/input-output-hk/devx-devcontainer:x86_64-linux.ghc96-iog \
+            bash -ic "cabal update && cabal run plutus-tx-template && test -e validator.uplc"

RELEASE.adoc

@@ -100,6 +100,12 @@ Another example is if a security audit is done on `rc1`, and the changes in `rc2
 - Update the CHaP index state in `cabal.project`.
 - Update the CHaP flake input with `nix flake update CHaP`.  If you get "error: cannot find flake 'flake:CHaP' in the flake registries" your nix installation probably needs to be updated.
 
+9. Make a PR to update the version used in `plutus-tx-template`
+- Navigate to the https://github.com/IntersectMBO/plutus-tx-template/actions/workflows/bump-plutus-version.yml[Bump Plutus Version Action] on GitHub
+- Click the `Run workflow` button on the right, enter the new release version and confirm
+- This will automatically open a PR in `plutus-tx-template` with auto-merge enabled
+- Ensure that CI is green and the PR gets merged
+
 === Patch Releases
 
 Suppose we are releasing version `x.y.z.w`.