ci: --pedantic is too much for now

.github/workflows/linux-nightly.yml

@@ -172,8 +172,8 @@ jobs:
 
     - name: Build hledger and test unit tests, doc tests
       run: |
-        stack $ARGS build --pedantic --test --bench
+        stack $ARGS build --test --bench --ghc-options=-Werror
-        #  --ghc-options=-Werror --no-terminal  #  --no-run-benchmarks
+        #   --pedantic --no-terminal  #  --no-run-benchmarks
       env:
         ARGS: ${{ matrix.plan.resolver }}
 

.github/workflows/mac-nightly.yml

@@ -117,8 +117,8 @@ jobs:
 
     - name: Build hledger and test unit tests, doc tests
       run: |
-        stack build --pedantic --test
+        stack build --test --ghc-options=-Werror
-      #  --ghc-options=-Werror
+      #  --pedantic
 
     - name: Install shelltestrunner
       run: |

.github/workflows/push.yml

@@ -108,8 +108,8 @@ jobs:
 
     - name: Build hledger fast
       run: |
-        stack build --fast --pedantic
+        stack build --fast --ghc-options=-Werror
-      #  --ghc-options=-Werror
+      #  --pedantic
 
     - name: Install shelltestrunner
       run: |

.github/workflows/windows-nightly.yml

@@ -139,8 +139,8 @@ jobs:
 
     - name: Build hledger executables
       run: |
-        stack --no-terminal install --pedantic
+        stack --no-terminal install --ghc-options=-Werror
-      # --ghc-options=-Werror
+      # --pedantic
 
     # run hledger-lib/hledger functional tests, skipping the ones for addons
     #- COLUMNS=80 stack exec -- shelltest --execdir -j16 tests -x /bin -x /addons

hledger-lib/test/doctests.hs

@@ -27,6 +27,7 @@ import System.Environment
 import "Glob" System.FilePath.Glob
 import Test.DocTest
 
+main :: IO ()
 main = do
   args <- getArgs
   let