[Hackage] #633: Cabal-1.8.0.2 fails to build packages for hugs: --inplace is not supported with Hugs

[Hackage]

#633: Cabal-1.8.0.2 fails to build packages for hugs: --inplace is not supported
with Hugs
----------------------------+-----------------------------------------------
  Reporter:  nomeata        |        Owner:         
      Type:  defect         |       Status:  new    
  Priority:  normal         |    Milestone:         
 Component:  Cabal library  |      Version:  1.6.0.1
  Severity:  normal         |     Keywords:         
Difficulty:  unknown        |   Ghcversion:         
  Platform:                 |  
----------------------------+-----------------------------------------------
 For the Debian packages, we use Cabal to build packages for ghc6 and for
 hugs. Unfortunately, with Cabal-1.8, the hugs support is broken:

 {{{
 debian/hlibrary.setup configure --hugs --prefix=/usr -v2 --builddir=dist-
 hugs
 Configuring binary-0.5.0.2...
 Flags chosen: applicative-in-base=True, split-base=True,
 bytestring-in-base=True
 Dependency array -any: using array
 Dependency base >1 && <1: using base
 Dependency containers -any: using containers
 Using Cabal-1.8.0.2 compiled by ghc-6.12
 Using compiler: hugs
 Using install prefix: /usr
 Binaries installed in: /usr/bin
 Libraries installed in: /usr/lib/hugs/packages/binary
 Private binaries installed in: /usr/libexec
 Data files installed in: /usr/share/binary-0.5.0.2
 Documentation installed in: /usr/share/doc/binary-0.5.0.2
 No alex found
 Using ar found on system at: /usr/bin/ar
 No c2hs found
 Using cpphs version 1.9 found on system at: /usr/bin/cpphs
 Using ffihugs found on system at: /usr/bin/ffihugs
 Using gcc version 4.4.3 found on system at: /usr/bin/gcc
 Using ghc version 6.12.1 found on system at: /usr/bin/ghc
 Using ghc-pkg version 6.12.1 found on system at: /usr/bin/ghc-pkg
 No greencard found
 Using haddock version 2.6.0 found on system at: /usr/bin/haddock
 No happy found
 No hmake found
 Using hsc2hs version 0.67 found on system at: /usr/bin/hsc2hs
 Using hscolour version 1.15 found on system at: /usr/bin/HsColour
 Using hugs found on system at: /usr/bin/hugs
 No jhc found
 Using ld found on system at: /usr/bin/ld
 No lhc found
 No lhc-pkg found
 No nhc98 found
 No pkg-config found
 Using ranlib found on system at: /usr/bin/ranlib
 Using strip found on system at: /usr/bin/strip
 Using tar found on system at: /bin/tar
 debian/hlibrary.setup build --builddir=dist-hugs
 Preprocessing library binary-0.5.0.2...
 Building binary-0.5.0.2...
 Registering binary-0.5.0.2...
 hlibrary.setup: --inplace is not supported with Hugs
 }}}

 The reason seems to be the build function in
 ./Distribution/Simple/Build.hs:
 {{{
 build pkg_descr lbi flags suffixes = do
   let distPref  = fromFlag (buildDistPref flags)
       verbosity = fromFlag (buildVerbosity flags)
   initialBuildSteps distPref pkg_descr lbi verbosity suffixes
   setupMessage verbosity "Building" (packageId pkg_descr)

   internalPackageDB <- createInternalPackageDB distPref

   withLibLBI pkg_descr lbi $ \lib clbi -> do
     info verbosity "Building library..."
     buildLib verbosity pkg_descr lbi lib clbi

     installedPkgInfo <- generateRegistrationInfo verbosity pkg_descr lib
                                lbi clbi True{-inplace-} distPref

     -- Register the library in-place, so exes can depend
     -- on internally defined libraries.
     registerPackage verbosity
       installedPkgInfo pkg_descr lbi True{-inplace-} internalPackageDB

   -- Use the internal package db for the exes.
   let lbi' = lbi { withPackageDB = withPackageDB lbi ++
 [internalPackageDB] }

   withExeLBI pkg_descr lbi' $ \exe clbi -> do
     info verbosity $ "Building executable " ++ exeName exe ++ "..."
     buildExe verbosity pkg_descr lbi' exe clbi
 }}}

 Here, the inplace flag is unconditionally set to true. But in
 ./Distribution/Simple/Register.hs, we have
 {{{
 registerPackageHugs verbosity installedPkgInfo pkg lbi inplace _packageDb
 = do
   when inplace $ die "--inplace is not supported with Hugs"
   let installDirs = absoluteInstallDirs pkg lbi NoCopyDest
   createDirectoryIfMissingVerbose verbosity True (libdir installDirs)
   writeUTF8File (libdir installDirs </> "package.conf")
                 (showInstalledPackageInfo installedPkgInfo)
 }}}

 I’d be grateful for a quick work-around or patch, as this is holding up
 the transition to ghc 6.12 in Debian.

-- 
Ticket URL: <http://hackage.haskell.org/trac/hackage/ticket/633>
Hackage <http://haskell.org/cabal/>
Hackage: Cabal and related projects