Merge pull request #4 from serokell/balsoft/fix-ci

Fix CI to fail when haddock fails

default.nix

@@ -4,12 +4,17 @@ let
   hn = nixpkgs.haskell-nix;
 in (hn.stackProject {
   src = hn.haskellLib.cleanGit { src = ./.; };
-  cache = with sources; [
-    {
-      name = "loot-prelude";
-      inherit (lootbox) sha256 rev;
-      url = "https://github.com/${lootbox.owner}/${lootbox.repo}.git";
-      subdir = "code/prelude";
-    }
-  ];
+  modules = [{
+    packages.crossref-verifier = {
+      # More failures during CI == Less failures in runtime!
+      postHaddock = ''[[ -z "$(ls -A dist/doc/html)" ]] && exit 1 || echo "haddock successfully generated documentation"'';
+      package.ghcOptions = "-Werror";
+    };
+  }];
+  cache = with sources; [{
+    name = "loot-prelude";
+    inherit (lootbox) sha256 rev;
+    url = "https://github.com/${lootbox.owner}/${lootbox.repo}.git";
+    subdir = "code/prelude";
+  }];
 }).crossref-verifier

src/Crv/Progress.hs

@@ -23,9 +23,9 @@ import Time (ms, threadDelay)
 
 -- | Processing progress of any thing.
 data Progress a = Progress
-    { pCurrent
+    { pCurrent :: a
       -- ^ How much has been completed.
-    , pTotal
+    , pTotal :: a
       -- ^ Overall amount of work.
     , pErrors :: !a
       -- ^ How many of the completed work finished with an error.