Filter paths that run CI (#279)

* Filter paths that run CI
* Add dummy CI to check

.github/workflows/dummy-ci.yml

@@ -0,0 +1,28 @@
+# RUN IN CASE Haskell-CI DOES NOT RUN
+# used for mergify check
+name: Co-Haskell-CI
+on:
+  push: 
+    paths-ignore:
+      - '**.hs'
+      - '**.sw'
+      - '**.cabal'
+      - '*.yaml'
+      - 'data/**.yaml'
+      - 'cabal.project*'
+  # reuse the same filter for pull-requests
+  pull_request:
+    paths-ignore:
+      - '**.hs'
+      - '**.sw'
+      - '**.cabal'
+      - 'stack.yaml'
+      - '*.yaml'
+      - 'data/**.yaml'
+      - 'cabal.project*'
+jobs:
+  linux:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Do nothing
+        run: exit 0

.github/workflows/haskell-ci.yml

@@ -1,3 +1,5 @@
+## Hand edited to add paths filter ;)
+#
 # This GitHub workflow config has been generated by a script via
 #
 #   haskell-ci 'github' 'swarm.cabal'
@@ -14,8 +16,24 @@
 #
 name: Haskell-CI
 on:
-  - push
-  - pull_request
+  push: 
+    paths:
+      - '**.hs'
+      - '**.sw'
+      - '**.cabal'
+      - '*.yaml'
+      - 'data/**.yaml'
+      - 'cabal.project*'
+  # reuse the same filter for pull-requests
+  pull_request:
+    paths:
+      - '**.hs'
+      - '**.sw'
+      - '**.cabal'
+      - 'stack.yaml'
+      - '*.yaml'
+      - 'data/**.yaml'
+      - 'cabal.project*'
 jobs:
   linux:
     # when changing the name or adding ghc version, please don't forget to update

.mergify.yml

@@ -6,8 +6,11 @@ pull_request_rules:
       commit_message: title+body
   name: Automatically merge pull requests
   conditions:
-  - check-success=Haskell-CI - Linux - ghc-9.0.1
-  - check-success=Haskell-CI - Linux - ghc-8.10.4
+  - or:
+    - check-success=Co-Haskell-CI
+    - and:
+      - check-success=Haskell-CI - Linux - ghc-9.0.1
+      - check-success=Haskell-CI - Linux - ghc-8.10.4
   - label=merge me
   - ! '#approved-reviews-by>=1'
   - ! '#changes-requested-reviews-by=0'