Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v2, haskell/actions/setup@v1, actions/cache@v2. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

The following actions uses node12 which is deprecated and will be forced to run on node16: actions/checkout@v2, haskell/actions/setup@v1, actions/cache@v2. For more info: https://github.blog/changelog/2023-06-13-github-actions-all-actions-will-run-on-node16-instead-of-node12-by-default/

As of 2023-09-09, haskell/action/setup is no longer maintained, please switch to haskell-actions/setup (note: dash for slash).

Noncanonical ‘pure = return’ definition detected

In the use of ‘head’

The qualified import of ‘Prelude’ is redundant

Noncanonical ‘pure = return’ definition detected

Pattern match(es) are non-exhaustive

In the use of ‘head’

Noncanonical ‘return’ definition detected

Noncanonical ‘pure = return’ definition detected

Noncanonical ‘return’ definition detected