Readme and action.yml cleanup

README.md

@@ -7,22 +7,8 @@
 This action sets up a Haskell environment for use in actions by:
 
 - optionally installing a version of ghc and cabal and adding to PATH. Note that this action only uses versions of ghc and cabal already installed in the cache. The action will fail if no matching versions are found.
- - Supported versions of GHC:
-    - `8.0.2`
-    - `8.2.2`
-    - `8.4.4`
-    - `8.6.2`
-    - `8.6.3`
-    - `8.6.4`
-    - `8.6.5`
-    - `8.8.1`
- - Supported versions of Cabal:
-    - `2.0`
-    - `2.2`
-    - `2.4`
-    - `3.0`
 
-# Usage
+## Usage
 
 See [action.yml](action.yml)
 
@@ -59,10 +45,28 @@ jobs:
       - run: runghc Hello.hs
 ```
 
-# License
+Supported versions of GHC:
 
-The scripts and documentation in this project are released under the [MIT License](LICENSE)
+- `8.0.2`
+- `8.2.2`
+- `8.4.4`
+- `8.6.2`
+- `8.6.3`
+- `8.6.4`
+- `8.6.5`
+- `8.8.1`
 
-# Contributions
+Supported versions of Cabal:
 
-Contributions are welcome!  See [Contributor's Guide](docs/contributors.md)
+- `2.0`
+- `2.2`
+- `2.4`
+- `3.0`
+
+## License
+
+The scripts and documentation in this project are released under the [MIT License](LICENSE).
+
+## Contributions
+
+Contributions are welcome!  See the [Contributor's Guide](docs/contributors.md).

action.yml

@@ -3,8 +3,11 @@ description: 'Setup a Haskell environment and add it to the PATH'
 author: 'GitHub'
 inputs:
   ghc-version:
-    description: 'Version range or exact version of ghc to use.'
-    default: '>= 8.6.5'
+    description: 'Exact version of ghc to use.'
+    default: '8.6.5'
+  cabal-version:
+    description: 'Exact version of cabal to use.'
+    default: '3.0'
 runs:
   using: 'node12'
   main: 'lib/setup-haskell.js'