From ffe3c9b706db3bf0bba6c6e070c838daa5e4591e Mon Sep 17 00:00:00 2001
From: Taylor Fausak <taylor@fausak.me>
Date: Sat, 4 Dec 2021 15:26:06 -0500
Subject: [PATCH] Add `pedantic` flag and remove `cabal.project`

---
 .github/workflows/ci.yaml |  1 +
 .gitignore                |  1 +
 cabal.project             |  6 ------
 witch.cabal               | 11 ++++++++++-
 4 files changed, 12 insertions(+), 7 deletions(-)
 delete mode 100644 cabal.project

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 74c9092..78457b8 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -31,6 +31,7 @@ jobs:
         with:
           ghc-version: ${{ matrix.ghc }}
           cabal-version: ${{ matrix.cabal }}
+      - run: cabal configure --enable-tests --flags pedantic --jobs
       - run: cabal freeze && cat cabal.project.freeze
       - uses: actions/cache@v2
         with:
diff --git a/.gitignore b/.gitignore
index f9aca15..064ab2b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 /.ghc.environment*
 /.stack-work/
 /cabal.project.freeze
+/cabal.project.local*
 /cabal.sandbox.config
 /dist-newstyle/
 /dist/
diff --git a/cabal.project b/cabal.project
deleted file mode 100644
index 8d2a898..0000000
--- a/cabal.project
+++ /dev/null
@@ -1,6 +0,0 @@
-jobs: $ncpus
-packages: .
-
-package witch
-  ghc-options: -Werror
-  tests: True
diff --git a/witch.cabal b/witch.cabal
index de9b156..4b48086 100644
--- a/witch.cabal
+++ b/witch.cabal
@@ -16,6 +16,11 @@ source-repository head
   location: https://github.com/tfausak/witch
   type: git
 
+flag pedantic
+  default: False
+  description: Enables @-Werror@, which turns warnings into errors.
+  manual: True
+
 common basics
   build-depends:
     , base >= 4.10.0 && < 4.17
@@ -46,11 +51,15 @@ common basics
     ghc-options:
       -Wno-missing-safe-haskell-mode
       -Wno-prepositive-qualified-module
-      
+
   if impl(ghc >= 9.2)
     ghc-options:
       -Wno-missing-kind-signatures
 
+  if flag(pedantic)
+    ghc-options:
+      -Werror
+
 library
   import: basics