#!/bin/sh

[ $# -lt 1 ] && echo "Usage: `basename $0` %{buildroot}%{ghclibdir} ..." && exit 1

set +x

PKGBASEDIR=$1
shift
if [ -d $PKGBASEDIR/lib ];
then PKGCONFDIR=$PKGBASEDIR/lib/package.conf.d
else PKGCONFDIR=$PKGBASEDIR/package.conf.d
fi

# for a ghc build use the new ghc-pkg
if [ -x "$PKGBASEDIR/bin/ghc-pkg" ]; then
    GHC_PKG="env LD_LIBRARY_PATH=$(dirname $PKGBASEDIR) $PKGBASEDIR/bin/ghc-pkg --global-package-db=$PKGCONFDIR"
else
    GHC_VER=$(basename $PKGBASEDIR | sed -e s/ghc-//)
    GHC_PKG="/usr/bin/ghc-pkg-${GHC_VER} -f $PKGCONFDIR"
fi

$GHC_PKG -v0 --simple-output $* | uniq