haskell: fix logic error in generic builder introduced in 00892b7

peti · peti · commit bff2ea5a4cfa · 2017-06-23T12:51:11.000+02:00
Closes #26760. (cherry picked from commit 8ddaef6)
diff --git a/pkgs/development/haskell-modules/generic-builder.nix b/pkgs/development/haskell-modules/generic-builder.nix
@@ -34,7 +34,7 @@
 , license
 , maintainers ? []
 , doCoverage ? false
-, doHaddock ? (!ghc.isHaLVM or true)
+, doHaddock ? !(ghc.isHaLVM or false)
 , passthru ? {}
 , pkgconfigDepends ? [], libraryPkgconfigDepends ? [], executablePkgconfigDepends ? [], testPkgconfigDepends ? [], benchmarkPkgconfigDepends ? []
 , testDepends ? [], testHaskellDepends ? [], testSystemDepends ? []
