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haskell: introduce failOnAllWarnings

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Applying `haskell.lib.failOnAllWarnings` to a Haskell package enables the
`-Wall` and `-Werror` GHC options to turn all warnings into build failures.
This commit is contained in:
Bas van Dijk 2017-09-10 13:09:52 +02:00
parent 9b8f67969e
commit b4ea459eab
2 changed files with 12 additions and 5 deletions
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13
doc/languages-frameworks/haskell.md
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@ -875,12 +875,17 @@ to your own Haskell packages and integrate that in a Continuous Integration
server like [hydra](https://nixos.org/hydra/) to assure your packages maintain a
minimum level of quality. This section discusses some of these functions.
#### failOnAllWarnings
Applying `haskell.lib.failOnAllWarnings` to a Haskell package enables the
`-Wall` and `-Werror` GHC options to turn all warnings into build failures.
#### buildStrictly
Applying `haskell.lib.buildStrictly` to a Haskell package enables the `-Wall`
and `-Werror` GHC options to turn all warnings into build failures. Additionally
the source of your package is gotten from first invoking `cabal sdist` to ensure
all needed files are listed in the Cabal file.
Applying `haskell.lib.buildStrictly` to a Haskell package calls
`failOnAllWarnings` on the given package to turn all warnings into build
failures. Additionally the source of your package is gotten from first invoking
`cabal sdist` to ensure all needed files are listed in the Cabal file.
#### checkUnusedPackages

4
pkgs/development/haskell-modules/lib.nix
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@ -117,7 +117,9 @@ rec {
'';
});
buildStrictly = pkg: buildFromSdist (appendConfigureFlag pkg "--ghc-option=-Wall --ghc-option=-Werror");
buildStrictly = pkg: buildFromSdist (failOnAllWarnings pkg);
failOnAllWarnings = drv: appendConfigureFlag drv "--ghc-option=-Wall --ghc-option=-Werror";
checkUnusedPackages =
{ ignoreEmptyImports ? false