Add example for Haskell Stack

README.md

@@ -92,6 +92,7 @@ See [Examples](examples.md) for a list of `actions/cache` implementations for us
 - [Elixir - Mix](./examples.md#elixir---mix)
 - [Go - Modules](./examples.md#go---modules)
 - [Haskell - Cabal](./examples.md#haskell---cabal)
+- [Haskell - Stack](./examples.md#haskell---stack)
 - [Java - Gradle](./examples.md#java---gradle)
 - [Java - Maven](./examples.md#java---maven)
 - [Node - npm](./examples.md#node---npm)

examples.md

@@ -6,6 +6,7 @@
   - [Elixir - Mix](#elixir---mix)
   - [Go - Modules](#go---modules)
   - [Haskell - Cabal](#haskell---cabal)
+  - [Haskell - Stack](#haskell---stack)
   - [Java - Gradle](#java---gradle)
   - [Java - Maven](#java---maven)
   - [Node - npm](#node---npm)
@@ -130,6 +131,25 @@ We cache the elements of the Cabal store separately, as the entirety of `~/.caba
     key: ${{ runner.os }}-${{ matrix.ghc }}
 ```
 
+## Haskell - Stack
+
+```yaml
+- uses: actions/cache@v2
+  name: Cache ~/.stack
+  with:
+    path: ~/.stack
+    key: ${{ runner.os }}-stack-global-${{ hashFiles('stack.yaml') }}-${{ hashFiles('package.yaml') }}
+    restore-keys: |
+      ${{ runner.os }}-stack-global-
+- uses: actions/cache@v2
+  name: Cache .stack-work
+  with:
+    path: .stack-work
+    key: ${{ runner.os }}-stack-work-${{ hashFiles('stack.yaml') }}-${{ hashFiles('package.yaml') }}-${{ hashFiles('**/*.hs') }}
+    restore-keys: |
+      ${{ runner.os }}-stack-work-
+```
+
 ## Java - Gradle
 
 ```yaml