[gentoo-dev] haskell-cabal.eclass suggestions

Those are really just nits, but I thought I'd share what I've noticed.

> cabal-mksetup() {
>     local setupdir
>
>     if [[ -n $1 ]]; then
>         setupdir=$1
>     else
>         setupdir=${S}
>     fi
>
>     rm -f "${setupdir}"/Setup.{lhs,hs}
>
>     echo 'import Distribution.Simple; main = defaultMainWithHooks defaultUserHooks' \
>         > $setupdir/Setup.hs
> }

I think there should be || die after echo, to catch out-of-disk-space
problems.

> cabal-copy() {
>     has "${EAPI:-0}" 0 1 2 && ! use prefix && ED=${D}
>
>     set -- copy --destdir="${D}" "$@"
>     echo ./setup "$@"
>     ./setup "$@" || die "setup copy failed"
>
>     # cabal is a bit eager about creating dirs,
>     # so remove them if they are empty
>     rmdir "${ED}/usr/bin" 2> /dev/null
>
>     # GHC 6.4 has a bug in get/setPermission and Cabal 1.1.1 has
>     # no workaround.
>     # set the +x permission on executables
>     if [[ -d "${ED}/usr/bin" ]] ; then
>         chmod +x "${ED}/usr/bin/"*
>     fi
>     # TODO: do we still need this?
> }

I think there should be || die after chmod.

> haskell-cabal_pkg_setup() {
>     ghc-package_pkg_setup
>     if [[ -z "${CABAL_BOOTSTRAP}" && -z "${CABAL_FROM_GHC}" ]] && ! ghc-sanecabal "${CABAL_MIN_VERSION}"; then
>         eerror "The package dev-haskell/cabal is not correctly installed for"
>         eerror "the currently active version of ghc ($(ghc-version)). Please"
>         eerror "run ghc-updater or haskell-updater or re-build dev-haskell/cabal."
>         die "cabal is not correctly installed"
>     fi
>     if [[ -z "${CABAL_HAS_BINARIES}" ]] && [[ -z "${CABAL_HAS_LIBRARIES}" ]]; then
>         eerror "QA: Neither bin nor lib are in CABAL_FEATURES."

Shouldn't this be eqawarn?

>     fi
>     if [[ -n "${CABAL_UNKNOWN}" ]]; then
>         ewarn "Unknown entry in CABAL_FEATURES: ${CABAL_UNKNOWN}"

Shouldn't this be eqawarn?

>     fi
>     if cabal-is-dummy-lib; then
>         einfo "${P} is included in ghc-${CABAL_CORE_LIB_GHC_PV}, nothing to install."
>     fi
> }