[ci] Add lint job and enable yaml linting of GH files. (#2819)

.github/actions/setup-build/action.yml

@@ -1,3 +1,4 @@
+# yamllint disable rule:line-length
 name: "Setup build environment"
 description: "Setup the build environment. An action so that it can be shared between in-tree/out-of-tree jobs"
 

.github/workflows/RollPyTorch.yml

@@ -1,3 +1,4 @@
+# yamllint disable rule:line-length
 name: Roll PyTorch
 
 on:
@@ -14,7 +15,6 @@ jobs:
     if: github.repository == 'llvm/torch-mlir'
 
     steps:
-
       - name: Prepare workspace
         run: |
           # Clear the workspace directory so that we don't run into errors about

.github/workflows/bazelBuildAndTest.yml

@@ -1,8 +1,9 @@
+# yamllint disable rule:line-length
 name: Bazel Build and Test
 
 on:
   push:
-    branches: [ main ]
+    branches: [main]
   workflow_dispatch:
 
 # Ensure that only a single job or workflow using the same

.github/workflows/buildAndTest.yml

@@ -1,10 +1,11 @@
+# yamllint disable rule:line-length
 name: Build and Test
 
 on:
   pull_request:
-    branches: [ main ]
+    branches: [main]
   push:
-    branches: [ main ]
+    branches: [main]
   workflow_dispatch:
 
 # Ensure that only a single job or workflow using the same
@@ -57,7 +58,6 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-    
       - name: Prepare workspace
         if: ${{ matrix.os-arch == 'ubuntu-x86_64' }}
         run: |

.github/workflows/buildRelease.yml

@@ -1,3 +1,4 @@
+# yamllint disable rule:line-length
 name: Release Build
 
 on:
@@ -16,11 +17,10 @@ jobs:
     runs-on: a100
     strategy:
       matrix:
-        package: [ torch-mlir ]
+        package: [torch-mlir]
-        py_version: [ cp38-cp38, cp311-cp311 ]
+        py_version: [cp38-cp38, cp311-cp311]
 
     steps:
-
       - name: Prepare workspace
         run: |
           # Clear the workspace directory so that we don't run into errors about
@@ -85,11 +85,10 @@ jobs:
     runs-on: linux-arm64
     strategy:
       matrix:
-        package: [ torch-mlir ]
+        package: [torch-mlir]
-        py_version: [ cp311-cp311 ]
+        py_version: [cp311-cp311]
 
     steps:
-
       - name: Prepare workspace
         run: |
           # Clear the workspace directory so that we don't run into errors about
@@ -154,7 +153,7 @@ jobs:
     runs-on: macos-latest
     strategy:
       matrix:
-        package: [ torch-mlir ]
+        package: [torch-mlir]
     steps:
       - name: Get torch-mlir
         uses: actions/checkout@v3
@@ -214,7 +213,7 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        package: [ torch-mlir ]
+        package: [torch-mlir]
     steps:
       - name: Get torch-mlir
         uses: actions/checkout@v3

.github/workflows/gh-pages-releases.yml

@@ -1,3 +1,4 @@
+# yamllint disable rule:line-length
 # See: https://github.com/llvm/torch-mlir/issues/1374
 name: Publish releases page
 

.github/workflows/lint.yml

@@ -0,0 +1,17 @@
+name: Lint Checks
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  static_lint_checks:
+    name: Static Lint Checks
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Validate GitHub Actions yaml files
+        run: |
+          yamllint ./.github/workflows/ ./.github/actions/

.github/workflows/merge-rollpytorch.yml

@@ -1,3 +1,4 @@
+# yamllint disable rule:line-length
 name: RollPyTorch Merge
 
 on:

.github/workflows/oneshotSnapshotPackage.yml

@@ -1,3 +1,4 @@
+# yamllint disable rule:line-length
 name: Release oneshot snapshot package
 
 on:

.github/workflows/releaseSnapshotPackage.yml

@@ -1,3 +1,4 @@
+# yamllint disable rule:line-length
 name: Release snapshot package
 
 on: