alogic0/bootstrap.sh

## bootstrap.sh
#!/bin/sh
set -e

# A script to bootstrap cabal-install.

# It works by downloading and installing the Cabal, zlib and
# HTTP packages. It then installs cabal-install itself.
# It expects to be run inside the cabal-install directory.

# Install settings, you can override these by setting environment vars. E.g. if
# you don't want profiling and dynamic versions of libraries to be installed in
# addition to vanilla, run 'EXTRA_CONFIGURE_OPTS="" ./bootstrap.sh'

#VERBOSE
DEFAULT_CONFIGURE_OPTS=""
EXTRA_CONFIGURE_OPTS=${EXTRA_CONFIGURE_OPTS-$DEFAULT_CONFIGURE_OPTS}
#EXTRA_BUILD_OPTS
#EXTRA_INSTALL_OPTS

die() {
    printf "\nError during cabal-install bootstrap:\n%s\n" "$1" >&2
    exit 2
}

# programs, you can override these by setting environment vars
GHC="${GHC:-ghc}"
GHC_PKG="${GHC_PKG:-ghc-pkg}"
GHC_VER="$(${GHC} --numeric-version)"
HADDOCK=${HADDOCK:-haddock}
WGET="${WGET:-wget}"
CURL="${CURL:-curl}"
FETCH="${FETCH:-fetch}"
TAR="${TAR:-tar}"
GZIP_PROGRAM="${GZIP_PROGRAM:-gzip}"

# The variable SCOPE_OF_INSTALLATION can be set on the command line to
# use/install the libaries needed to build cabal-install to a custom package
# database instead of the user or global package database.
#
# Example:
#
# $ ghc-pkg init /my/package/database
# $ SCOPE_OF_INSTALLATION='--package-db=/my/package/database' ./bootstrap.sh
#
# You can also combine SCOPE_OF_INSTALLATION with PREFIX:
#
# $ ghc-pkg init /my/prefix/packages.conf.d
# $ SCOPE_OF_INSTALLATION='--package-db=/my/prefix/packages.conf.d' \
#   PREFIX=/my/prefix ./bootstrap.sh
#
# If you use the --global,--user or --sandbox arguments, this will
# override the SCOPE_OF_INSTALLATION setting and not use the package
# database you pass in the SCOPE_OF_INSTALLATION variable.

SCOPE_OF_INSTALLATION="${SCOPE_OF_INSTALLATION:---user}"
DEFAULT_PREFIX="${HOME}/.cabal"

TMPDIR=$(mktemp -d -p /tmp -t cabal-XXXXXXX || mktemp -d -t cabal-XXXXXXX)
export TMPDIR

# Check for a C compiler, using user-set $CC, if any, first.
for c in $CC gcc clang cc icc; do
  $c --version 1>/dev/null 2>&1 && CC=$c &&
  echo "Using $c for C compiler. If this is not what you want, set CC." >&2 &&
  break
done

# None found.
[ -"$CC"- = -""- ] && die 'C compiler not found (or could not be run).
  If a C compiler is installed make sure it is on your PATH, or set $CC.'

# Find the correct linker/linker-wrapper.
#
# See https://github.com/haskell/cabal/pull/4187#issuecomment-269074153.
LINK="$(for link in collect2 ld; do
          if [ $($CC -print-prog-name=$link) = $link ]
          then
              continue
          else
              $CC -print-prog-name=$link && break
          fi
        done)"

# Fall back to "ld"... might work.
[ -$LINK- = -""- ] && LINK=ld

# And finally, see if we can compile and link something.
#  echo 'int main(){}' | $CC -xc - -o /dev/null ||
#    die "C compiler and linker could not compile a simple test program.
#    Please check your toolchain."

# Warn that were's overriding $LD if set (if you want).
[ -"$LD"- != -""- ] && [ -"$LD"- != -"$LINK"- ] &&
  echo "Warning: value set in $LD is not the same as C compiler's $LINK." >&2
  echo "Using $LINK instead." >&2

# Set LD, overriding environment if necessary.
export LD=$LINK

# Check we're in the right directory, etc.
grep "cabal-install" ./cabal-install.cabal > /dev/null 2>&1 ||
  die "The bootstrap.sh script must be run in the cabal-install directory"

${GHC} --numeric-version > /dev/null 2>&1  ||
  die "${GHC} not found (or could not be run).
       If ghc is installed,  make sure it is on your PATH,
       or set the GHC and GHC_PKG vars."

${GHC_PKG} --version     > /dev/null 2>&1  || die "${GHC_PKG} not found."

GHC_PKG_VER="$(${GHC_PKG} --version | cut -d' ' -f 5)"

[ ${GHC_VER} = ${GHC_PKG_VER} ] ||
  die "Version mismatch between ${GHC} and ${GHC_PKG}.
       If you set the GHC variable then set GHC_PKG too."

JOBS="-j1"
while [ "$#" -gt 0 ]; do
  case "${1}" in
    "--user")
      SCOPE_OF_INSTALLATION="${1}"
      shift;;
    "--global")
      SCOPE_OF_INSTALLATION="${1}"
      DEFAULT_PREFIX="/usr/local"
      shift;;
    "--sandbox")
      shift
      # check if there is another argument which doesn't start with --
      if [ "$#" -le 0 ] || [ ! -z $(echo "${1}" | grep "^--") ]
      then
          SANDBOX=".cabal-sandbox"
      else
          SANDBOX="${1}"
          shift
      fi;;
    "--no-doc")
      NO_DOCUMENTATION=1
      shift;;
    "-j"|"--jobs")
        shift
        # check if there is another argument which doesn't start with - or --
        if [ "$#" -le 0 ] \
            || [ ! -z $(echo "${1}" | grep "^-") ] \
            || [ ! -z $(echo "${1}" | grep "^--") ]
        then
            JOBS="-j"
        else
            JOBS="-j${1}"
            shift
        fi;;
    *)
      echo "Unknown argument or option, quitting: ${1}"
      echo "usage: bootstrap.sh [OPTION]"
      echo
      echo "options:"
      echo "   -j/--jobs       Number of concurrent workers to use (Default: 1)"
      echo "                   -j without an argument will use all available cores"
      echo "   --user          Install for the local user (default)"
      echo "   --global        Install systemwide (must be run as root)"
      echo "   --no-doc        Do not generate documentation for installed"\
           "packages"
      echo "   --sandbox       Install to a sandbox in the default location"\
           "(.cabal-sandbox)"
      echo "   --sandbox path  Install to a sandbox located at path"
      exit;;
  esac
done

# Do not try to use -j with GHC 7.8 or older
case $GHC_VER in
    7.4*|7.6*|7.8*)
        JOBS=""
        ;;
    *)
        ;;
esac

abspath () { case "$1" in /*)printf "%s\n" "$1";; *)printf "%s\n" "$PWD/$1";;
             esac; }

if [ ! -z "$SANDBOX" ]
then # set up variables for sandbox bootstrap
  # Make the sandbox path absolute since it will be used from
  # different working directories when the dependency packages are
  # installed.
  SANDBOX=$(abspath "$SANDBOX")
  # Get the name of the package database which cabal sandbox would use.
  GHC_ARCH=$(ghc --info |
    sed -n 's/.*"Target platform".*"\([^-]\+\)-[^-]\+-\([^"]\+\)".*/\1-\2/p')
  PACKAGEDB="$SANDBOX/${GHC_ARCH}-ghc-${GHC_VER}-packages.conf.d"
  # Assume that if the directory is already there, it is already a
  # package database. We will get an error immediately below if it
  # isn't. Uses -r to try to be compatible with Solaris, and allow
  # symlinks as well as a normal dir/file.
  [ ! -r "$PACKAGEDB" ] && ghc-pkg init "$PACKAGEDB"
  PREFIX="$SANDBOX"
  SCOPE_OF_INSTALLATION="--package-db=$PACKAGEDB"
  echo Bootstrapping in sandbox at \'$SANDBOX\'.
fi

# Check for haddock unless no documentation should be generated.
if [ ! ${NO_DOCUMENTATION} ]
then
  ${HADDOCK} --version     > /dev/null 2>&1  || die "${HADDOCK} not found."
fi

PREFIX=${PREFIX:-${DEFAULT_PREFIX}}

# Versions of the packages to install.
# The version regex says what existing installed versions are ok.
PARSEC_VER="3.1.13.0"; PARSEC_VER_REGEXP="[3]\.[1]\."
                       # >= 3.1 && < 3.2
DEEPSEQ_VER="1.4.3.0"; DEEPSEQ_VER_REGEXP="1\.[1-9]\."
                       # >= 1.1 && < 2
BINARY_VER="0.8.3.0";  BINARY_VER_REGEXP="[0]\.[78]\."
                       # >= 0.7 && < 0.9
TEXT_VER="1.2.3.0";    TEXT_VER_REGEXP="[1]\.[2]\."
                       # >= 1.2 && < 1.3
NETWORK_URI_VER="2.6.1.0"; NETWORK_URI_VER_REGEXP="2\.6\.(0\.[2-9]|[1-9])"
                       # >= 2.6.0.2 && < 2.7
NETWORK_VER="2.6.3.4"; NETWORK_VER_REGEXP="2\.[0-6]\."
                       # >= 2.0 && < 2.7
CABAL_VER="2.2.0.1";   CABAL_VER_REGEXP="2\.2\.[0-9]"
                       # >= 2.2 && < 2.3
TRANS_VER="0.5.5.0";   TRANS_VER_REGEXP="0\.[45]\."
                       # >= 0.2.* && < 0.6
MTL_VER="2.2.2";       MTL_VER_REGEXP="[2]\."
                       #  >= 2.0 && < 3
HTTP_VER="4000.3.11";  HTTP_VER_REGEXP="4000\.(2\.([5-9]|1[0-9]|2[0-9])|3\.?)"
                       # >= 4000.2.5 < 4000.4
ZLIB_VER="0.6.2";      ZLIB_VER_REGEXP="(0\.5\.([3-9]|1[0-9])|0\.6)"
                       # >= 0.5.3 && <= 0.7
TIME_VER="1.8.0.3"     TIME_VER_REGEXP="1\.[1-8]\.?"
                       # >= 1.1 && < 1.9
RANDOM_VER="1.1"       RANDOM_VER_REGEXP="1\.[01]\.?"
                       # >= 1 && < 1.2
STM_VER="2.4.5.0";     STM_VER_REGEXP="2\."
                       # == 2.*
HASHABLE_VER="1.2.7.0"; HASHABLE_VER_REGEXP="1\."
                       # 1.*
ASYNC_VER="2.2.1";     ASYNC_VER_REGEXP="2\."
                       # 2.*
BASE16_BYTESTRING_VER="0.1.1.6"; BASE16_BYTESTRING_VER_REGEXP="0\.1"
                       # 0.1.*
BASE64_BYTESTRING_VER="1.0.0.1"; BASE64_BYTESTRING_VER_REGEXP="1\."
                       # >=1.0
CRYPTOHASH_SHA256_VER="0.11.101.0"; CRYPTOHASH_SHA256_VER_REGEXP="0\.11\.?"
                       # 0.11.*
RESOLV_VER="0.1.1.1";  RESOLV_VER_REGEXP="0\.1\.[1-9]"
                       # >= 0.1.1 && < 0.2
MINTTY_VER="0.1.1";    MINTTY_VER_REGEXP="0\.1\.?"
                       # 0.1.*
ECHO_VER="0.1.3";      ECHO_VER_REGEXP="0\.1\.[3-9]"
                       # >= 0.1.3 && < 0.2
EDIT_DISTANCE_VER="0.2.2.1"; EDIT_DISTANCE_VER_REGEXP="0\.2\.2\.?"
                       # 0.2.2.*
ED25519_VER="0.0.5.0"; ED25519_VER_REGEXP="0\.0\.?"
                       # 0.0.*
HACKAGE_SECURITY_VER="0.5.3.0"; HACKAGE_SECURITY_VER_REGEXP="0\.5\.((2\.[2-9]|[3-9])|3)"
                       # >= 0.5.2 && < 0.6
TAR_VER="0.5.1.0";     TAR_VER_REGEXP="0\.5\.([1-9]|1[0-9]|0\.[3-9]|0\.1[0-9])\.?"
                       # >= 0.5.0.3  && < 0.6
WINDNS_VER="0.1.0.0";  WINDNS_VER_REGEXP="0\.1\.?\.?"
                       # >= 0.1.0 && < 0.2

HACKAGE_URL="https://hackage.haskell.org/package"

# Haddock fails for hackage-security for GHC <8,
# c.f. https://github.com/well-typed/hackage-security/issues/149
NO_DOCS_PACKAGES_VER_REGEXP="hackage-security-0\.5\.[0-9]+\.[0-9]+"

# Cache the list of packages:
echo "Checking installed packages for ghc-${GHC_VER}..."
${GHC_PKG} list --global ${SCOPE_OF_INSTALLATION} > ghc-pkg.list ||
  die "running '${GHC_PKG} list' failed"

# Will we need to install this package, or is a suitable version installed?
need_pkg () {
  PKG=$1
  VER_MATCH=$2
  if egrep " ${PKG}-${VER_MATCH}" ghc-pkg.list > /dev/null 2>&1
  then
    return 1;
  else
    return 0;
  fi
  #Note: we cannot use "! grep" here as Solaris 9 /bin/sh doesn't like it.
}

info_pkg () {
  PKG=$1
  VER=$2
  VER_MATCH=$3

  if need_pkg ${PKG} ${VER_MATCH}
  then
    if [ -r "${PKG}-${VER}.tar.gz" ]
    then
        echo "${PKG}-${VER} will be installed from local tarball."
    else
        echo "${PKG}-${VER} will be downloaded and installed."
    fi
  else
    echo "${PKG} is already installed and the version is ok."
  fi
}

fetch_pkg () {
  PKG=$1
  VER=$2

  URL_PKG=${HACKAGE_URL}/${PKG}-${VER}/${PKG}-${VER}.tar.gz
  URL_PKGDESC=${HACKAGE_URL}/${PKG}-${VER}/${PKG}.cabal
  if which ${CURL} > /dev/null
  then
    ${CURL} -L --fail -C - -O ${URL_PKG} || die "Failed to download ${PKG}."
    ${CURL} -L --fail -C - -O ${URL_PKGDESC} \
        || die "Failed to download '${PKG}.cabal'."
  elif which ${WGET} > /dev/null
  then
    ${WGET} -c ${URL_PKG} || die "Failed to download ${PKG}."
    ${WGET} -c ${URL_PKGDESC} || die "Failed to download '${PKG}.cabal'."
  elif which ${FETCH} > /dev/null
    then
      ${FETCH} ${URL_PKG} || die "Failed to download ${PKG}."
      ${FETCH} ${URL_PKGDESC} || die "Failed to download '${PKG}.cabal'."
  else
    die "Failed to find a downloader. 'curl', 'wget' or 'fetch' is required."
  fi
  [ -f "${PKG}-${VER}.tar.gz" ] ||
     die "Downloading ${URL_PKG} did not create ${PKG}-${VER}.tar.gz"
  [ -f "${PKG}.cabal" ] ||
     die "Downloading ${URL_PKGDESC} did not create ${PKG}.cabal"
  mv "${PKG}.cabal" "${PKG}.cabal.hackage"
}

unpack_pkg () {
  PKG=$1
  VER=$2

  rm -rf "${PKG}-${VER}.tar" "${PKG}-${VER}"
  ${GZIP_PROGRAM} -d < "${PKG}-${VER}.tar.gz" | ${TAR} -xf -
  [ -d "${PKG}-${VER}" ] || die "Failed to unpack ${PKG}-${VER}.tar.gz"
  cp "${PKG}.cabal.hackage" "${PKG}-${VER}/${PKG}.cabal"
}

install_pkg () {
  PKG=$1
  VER=$2

  [ -x Setup ] && ./Setup clean
  [ -f Setup ] && rm Setup

  PKG_DBS=$(printf '%s\n' "${SCOPE_OF_INSTALLATION}" \
             | sed -e 's/--package-db/-package-db/' \
                   -e 's/--global/-global-package-db/' \
                   -e 's/--user/-user-package-db/')

  ${GHC} --make ${JOBS} ${PKG_DBS} Setup -o Setup -XRank2Types -XFlexibleContexts ||
    die "Compiling the Setup script failed."

  [ -x Setup ] || die "The Setup script does not exist or cannot be run"

  args="${SCOPE_OF_INSTALLATION} --prefix=${PREFIX} --with-compiler=${GHC}"
  args="$args --with-hc-pkg=${GHC_PKG} --with-gcc=${CC} --with-ld=${LD}"
  args="$args ${EXTRA_CONFIGURE_OPTS} ${VERBOSE}"

  ./Setup configure $args || die "Configuring the ${PKG} package failed."

  ./Setup build ${JOBS} ${EXTRA_BUILD_OPTS} ${VERBOSE} ||
     die "Building the ${PKG} package failed."

  if [ ! ${NO_DOCUMENTATION} ]
  then
    if echo "${PKG}-${VER}" | egrep ${NO_DOCS_PACKAGES_VER_REGEXP} \
        > /dev/null 2>&1
    then
      echo "Skipping documentation for the ${PKG} package."
    else
      ./Setup haddock --with-ghc=${GHC} --with-haddock=${HADDOCK} ${VERBOSE} ||
        die "Documenting the ${PKG} package failed."
    fi
  fi

  ./Setup install ${EXTRA_INSTALL_OPTS} ${VERBOSE} ||
     die "Installing the ${PKG} package failed."
}

do_pkg () {
  PKG=$1
  VER=$2
  VER_MATCH=$3

  if need_pkg ${PKG} ${VER_MATCH}
  then
    echo
    if [ -r "${PKG}-${VER}.tar.gz" ]
    then
        echo "Using local tarball for ${PKG}-${VER}."
    else
        echo "Downloading ${PKG}-${VER}..."
        fetch_pkg ${PKG} ${VER}
    fi
    unpack_pkg "${PKG}" "${VER}"
    (cd "${PKG}-${VER}" && install_pkg ${PKG} ${VER})
  fi
}

# If we're bootstrapping from a Git clone, install the local version of Cabal
# instead of downloading one from Hackage.
do_Cabal_pkg () {
    if [ -d "../.git" ]
    then
        if need_pkg "Cabal" ${CABAL_VER_REGEXP}
        then
            echo "Cabal-${CABAL_VER} will be installed from the local Git clone."
            (cd ../Cabal && install_pkg ${CABAL_VER} ${CABAL_VER_REGEXP})
        else
            echo "Cabal is already installed and the version is ok."
        fi
    else
        info_pkg "Cabal"        ${CABAL_VER}   ${CABAL_VER_REGEXP}
        do_pkg   "Cabal"        ${CABAL_VER}   ${CABAL_VER_REGEXP}
    fi
}

# Actually do something!

info_pkg "deepseq"      ${DEEPSEQ_VER} ${DEEPSEQ_VER_REGEXP}
info_pkg "binary"       ${BINARY_VER}  ${BINARY_VER_REGEXP}
info_pkg "time"         ${TIME_VER}    ${TIME_VER_REGEXP}
info_pkg "transformers" ${TRANS_VER}   ${TRANS_VER_REGEXP}
info_pkg "mtl"          ${MTL_VER}     ${MTL_VER_REGEXP}
info_pkg "text"         ${TEXT_VER}    ${TEXT_VER_REGEXP}
info_pkg "parsec"       ${PARSEC_VER}  ${PARSEC_VER_REGEXP}
info_pkg "network-uri"  ${NETWORK_URI_VER} ${NETWORK_URI_VER_REGEXP}
info_pkg "network"      ${NETWORK_VER} ${NETWORK_VER_REGEXP}
info_pkg "HTTP"         ${HTTP_VER}    ${HTTP_VER_REGEXP}
info_pkg "zlib"         ${ZLIB_VER}    ${ZLIB_VER_REGEXP}
info_pkg "random"       ${RANDOM_VER}  ${RANDOM_VER_REGEXP}
info_pkg "stm"          ${STM_VER}     ${STM_VER_REGEXP}
info_pkg "hashable"     ${HASHABLE_VER}  ${HASHABLE_VER_REGEXP}
info_pkg "async"        ${ASYNC_VER}   ${ASYNC_VER_REGEXP}
info_pkg "base16-bytestring" ${BASE16_BYTESTRING_VER} \
    ${BASE16_BYTESTRING_VER_REGEXP}
info_pkg "base64-bytestring" ${BASE64_BYTESTRING_VER} \
    ${BASE64_BYTESTRING_VER_REGEXP}
info_pkg "cryptohash-sha256" ${CRYPTOHASH_SHA256_VER} \
    ${CRYPTOHASH_SHA256_VER_REGEXP}
#info_pkg "resolv"        ${RESOLV_VER}        ${RESOLV_VER_REGEXP}
info_pkg "mintty"        ${MINTTY_VER}        ${MINTTY_VER_REGEXP}
info_pkg "echo"          ${ECHO_VER}          ${ECHO_VER_REGEXP}
info_pkg "edit-distance" ${EDIT_DISTANCE_VER} ${EDIT_DISTANCE_VER_REGEXP}
info_pkg "ed25519"           ${ED25519_VER}          ${ED25519_VER_REGEXP}
info_pkg "tar"               ${TAR_VER}              ${TAR_VER_REGEXP}
info_pkg "hackage-security"  ${HACKAGE_SECURITY_VER} \
    ${HACKAGE_SECURITY_VER_REGEXP}
info_pkg   "windns"      ${WINDNS_VER}        ${WINDNS_VER_REGEXP}

do_pkg   "deepseq"      ${DEEPSEQ_VER} ${DEEPSEQ_VER_REGEXP}
do_pkg   "binary"       ${BINARY_VER}  ${BINARY_VER_REGEXP}
do_pkg   "time"         ${TIME_VER}    ${TIME_VER_REGEXP}

# Cabal might depend on these
do_pkg   "transformers" ${TRANS_VER}   ${TRANS_VER_REGEXP}
do_pkg   "mtl"          ${MTL_VER}     ${MTL_VER_REGEXP}
do_pkg   "text"         ${TEXT_VER}    ${TEXT_VER_REGEXP}
do_pkg   "parsec"       ${PARSEC_VER}  ${PARSEC_VER_REGEXP}

# Install the Cabal library from the local Git clone if possible.
do_Cabal_pkg

do_pkg   "network-uri"  ${NETWORK_URI_VER} ${NETWORK_URI_VER_REGEXP}
do_pkg   "network"      ${NETWORK_VER} ${NETWORK_VER_REGEXP}
do_pkg   "HTTP"         ${HTTP_VER}       ${HTTP_VER_REGEXP}
do_pkg   "zlib"         ${ZLIB_VER}       ${ZLIB_VER_REGEXP}
do_pkg   "random"       ${RANDOM_VER}     ${RANDOM_VER_REGEXP}
do_pkg   "stm"          ${STM_VER}        ${STM_VER_REGEXP}
do_pkg   "hashable"     ${HASHABLE_VER}   ${HASHABLE_VER_REGEXP}
do_pkg   "async"        ${ASYNC_VER}      ${ASYNC_VER_REGEXP}
do_pkg   "base16-bytestring" ${BASE16_BYTESTRING_VER} \
    ${BASE16_BYTESTRING_VER_REGEXP}
do_pkg   "base64-bytestring" ${BASE64_BYTESTRING_VER} \
    ${BASE64_BYTESTRING_VER_REGEXP}
do_pkg   "cryptohash-sha256" ${CRYPTOHASH_SHA256_VER} \
    ${CRYPTOHASH_SHA256_VER_REGEXP}
#do_pkg "resolv"        ${RESOLV_VER}        ${RESOLV_VER_REGEXP}
do_pkg "mintty"        ${MINTTY_VER}        ${MINTTY_VER_REGEXP}
do_pkg "echo"          ${ECHO_VER}          ${ECHO_VER_REGEXP}
do_pkg "edit-distance" ${EDIT_DISTANCE_VER} ${EDIT_DISTANCE_VER_REGEXP}
do_pkg   "ed25519"           ${ED25519_VER}          ${ED25519_VER_REGEXP}
do_pkg   "tar"               ${TAR_VER}              ${TAR_VER_REGEXP}
do_pkg   "hackage-security"  ${HACKAGE_SECURITY_VER} \
    ${HACKAGE_SECURITY_VER_REGEXP}
do_pkg   "windns"      ${WINDNS_VER}        ${WINDNS_VER_REGEXP}


install_pkg "cabal-install"

# Use the newly built cabal to turn the prefix/package database into a
# legit cabal sandbox. This works because 'cabal sandbox init' will
# reuse the already existing package database and other files if they
# are in the expected locations.
[ ! -z "$SANDBOX" ] && $SANDBOX/bin/cabal sandbox init --sandbox $SANDBOX

echo
echo "==========================================="
CABAL_BIN="$PREFIX/bin"
if [ -x "$CABAL_BIN/cabal" ]
then
    echo "The 'cabal' program has been installed in $CABAL_BIN/"
    echo "You should either add $CABAL_BIN to your PATH"
    echo "or copy the cabal program to a directory that is on your PATH."
    echo
    echo "The first thing to do is to get the latest list of packages with:"
    echo "  cabal update"
    echo "This will also create a default config file (if it does not already"
    echo "exist) at $HOME/.cabal/config"
    echo
    echo "By default cabal will install programs to $HOME/.cabal/bin"
    echo "If you do not want to add this directory to your PATH then you can"
    echo "change the setting in the config file, for example you could use:"
    echo "symlink-bindir: $HOME/bin"
else
    echo "Sorry, something went wrong."
    echo "The 'cabal' executable was not successfully installed into"
    echo "$CABAL_BIN/"
fi
echo

rm ghc-pkg.list

## cabal-install-2.2.0.0_on_Windows7.md

      
    Raw
  

              cabal-install-2.2.0.0_on_Windows7.md
            
          
    Do you have an Windows 7 machine and no ASCII user name there? Then you'll have a problem
with building the cabal-install. The solution is to install GHC and all packages
into a directory with a simple path. For example d:\mstmp\. We'll do the following steps:

Install MSYS2

I use tar.gz file and just unpack it to my d:\mstmp directory.

Run after unpacking mingw64.exe file so it will make the initial configuration of the MSYS2.
It's optional also to change 'Options' of the window to have better font and window size if you will.
Create inside /home a directory with ASCII user name and make it a new home.

I've created a directory named oleg and copied there .bashrc and .profile from the current home.
Then old .bashrc and .profile were replaced with the following content:

export HOME=/home/oleg
cd $HOME
. .profile
. .bashrc
After re-running mingw64 you'll be in the new home. The full path in my case is D:\mstmp\msys64\home\oleg
 PREFIX=$HOME/cabal  ./bootstrap.sh --user --no-doc

  
## old_bashrc
export HOME=/home/oleg
cd $HOME
. .profile
. .bashrc
	#!/bin/sh
	set -e

	# A script to bootstrap cabal-install.

	# It works by downloading and installing the Cabal, zlib and
	# HTTP packages. It then installs cabal-install itself.
	# It expects to be run inside the cabal-install directory.

	# Install settings, you can override these by setting environment vars. E.g. if
	# you don't want profiling and dynamic versions of libraries to be installed in
	# addition to vanilla, run 'EXTRA_CONFIGURE_OPTS="" ./bootstrap.sh'

	#VERBOSE
	DEFAULT_CONFIGURE_OPTS=""
	EXTRA_CONFIGURE_OPTS=${EXTRA_CONFIGURE_OPTS-$DEFAULT_CONFIGURE_OPTS}
	#EXTRA_BUILD_OPTS
	#EXTRA_INSTALL_OPTS

	die() {
	printf "\nError during cabal-install bootstrap:\n%s\n" "$1" >&2
	exit 2
	}

	# programs, you can override these by setting environment vars
	GHC="${GHC:-ghc}"
	GHC_PKG="${GHC_PKG:-ghc-pkg}"
	GHC_VER="$(${GHC} --numeric-version)"
	HADDOCK=${HADDOCK:-haddock}
	WGET="${WGET:-wget}"
	CURL="${CURL:-curl}"
	FETCH="${FETCH:-fetch}"
	TAR="${TAR:-tar}"
	GZIP_PROGRAM="${GZIP_PROGRAM:-gzip}"

	# The variable SCOPE_OF_INSTALLATION can be set on the command line to
	# use/install the libaries needed to build cabal-install to a custom package
	# database instead of the user or global package database.
	#
	# Example:
	#
	# $ ghc-pkg init /my/package/database
	# $ SCOPE_OF_INSTALLATION='--package-db=/my/package/database' ./bootstrap.sh
	#
	# You can also combine SCOPE_OF_INSTALLATION with PREFIX:
	#
	# $ ghc-pkg init /my/prefix/packages.conf.d
	# $ SCOPE_OF_INSTALLATION='--package-db=/my/prefix/packages.conf.d' \
	# PREFIX=/my/prefix ./bootstrap.sh
	#
	# If you use the --global,--user or --sandbox arguments, this will
	# override the SCOPE_OF_INSTALLATION setting and not use the package
	# database you pass in the SCOPE_OF_INSTALLATION variable.

	SCOPE_OF_INSTALLATION="${SCOPE_OF_INSTALLATION:---user}"
	DEFAULT_PREFIX="${HOME}/.cabal"

	TMPDIR=$(mktemp -d -p /tmp -t cabal-XXXXXXX \|\| mktemp -d -t cabal-XXXXXXX)
	export TMPDIR

	# Check for a C compiler, using user-set $CC, if any, first.
	for c in $CC gcc clang cc icc; do
	$c --version 1>/dev/null 2>&1 && CC=$c &&
	echo "Using $c for C compiler. If this is not what you want, set CC." >&2 &&
	break
	done

	# None found.
	[ -"$CC"- = -""- ] && die 'C compiler not found (or could not be run).
	If a C compiler is installed make sure it is on your PATH, or set $CC.'

	# Find the correct linker/linker-wrapper.
	#
	# See https://github.com/haskell/cabal/pull/4187#issuecomment-269074153.
	LINK="$(for link in collect2 ld; do
	if [ $($CC -print-prog-name=$link) = $link ]
	then
	continue
	else
	$CC -print-prog-name=$link && break
	fi
	done)"

	# Fall back to "ld"... might work.
	[ -$LINK- = -""- ] && LINK=ld

	# And finally, see if we can compile and link something.
	# echo 'int main(){}' \| $CC -xc - -o /dev/null \|\|
	# die "C compiler and linker could not compile a simple test program.
	# Please check your toolchain."

	# Warn that were's overriding $LD if set (if you want).
	[ -"$LD"- != -""- ] && [ -"$LD"- != -"$LINK"- ] &&
	echo "Warning: value set in $LD is not the same as C compiler's $LINK." >&2
	echo "Using $LINK instead." >&2

	# Set LD, overriding environment if necessary.
	export LD=$LINK

	# Check we're in the right directory, etc.
	grep "cabal-install" ./cabal-install.cabal > /dev/null 2>&1 \|\|
	die "The bootstrap.sh script must be run in the cabal-install directory"

	${GHC} --numeric-version > /dev/null 2>&1 \|\|
	die "${GHC} not found (or could not be run).
	If ghc is installed, make sure it is on your PATH,
	or set the GHC and GHC_PKG vars."

	${GHC_PKG} --version > /dev/null 2>&1 \|\| die "${GHC_PKG} not found."

	GHC_PKG_VER="$(${GHC_PKG} --version \| cut -d' ' -f 5)"

	[ ${GHC_VER} = ${GHC_PKG_VER} ] \|\|
	die "Version mismatch between ${GHC} and ${GHC_PKG}.
	If you set the GHC variable then set GHC_PKG too."

	JOBS="-j1"
	while [ "$#" -gt 0 ]; do
	case "${1}" in
	"--user")
	SCOPE_OF_INSTALLATION="${1}"
	shift;;
	"--global")
	SCOPE_OF_INSTALLATION="${1}"
	DEFAULT_PREFIX="/usr/local"
	shift;;
	"--sandbox")
	shift
	# check if there is another argument which doesn't start with --
	if [ "$#" -le 0 ] \|\| [ ! -z $(echo "${1}" \| grep "^--") ]
	then
	SANDBOX=".cabal-sandbox"
	else
	SANDBOX="${1}"
	shift
	fi;;
	"--no-doc")
	NO_DOCUMENTATION=1
	shift;;
	"-j"\|"--jobs")
	shift
	# check if there is another argument which doesn't start with - or --
	if [ "$#" -le 0 ] \
	\|\| [ ! -z $(echo "${1}" \| grep "^-") ] \
	\|\| [ ! -z $(echo "${1}" \| grep "^--") ]
	then
	JOBS="-j"
	else
	JOBS="-j${1}"
	shift
	fi;;
	*)
	echo "Unknown argument or option, quitting: ${1}"
	echo "usage: bootstrap.sh [OPTION]"
	echo
	echo "options:"
	echo " -j/--jobs Number of concurrent workers to use (Default: 1)"
	echo " -j without an argument will use all available cores"
	echo " --user Install for the local user (default)"
	echo " --global Install systemwide (must be run as root)"
	echo " --no-doc Do not generate documentation for installed"\
	"packages"
	echo " --sandbox Install to a sandbox in the default location"\
	"(.cabal-sandbox)"
	echo " --sandbox path Install to a sandbox located at path"
	exit;;
	esac
	done

	# Do not try to use -j with GHC 7.8 or older
	case $GHC_VER in
	7.4\|7.6\|7.8*)
	JOBS=""
	;;
	*)
	;;
	esac

	abspath () { case "$1" in /)printf "%s\n" "$1";; )printf "%s\n" "$PWD/$1";;
	esac; }

	if [ ! -z "$SANDBOX" ]
	then # set up variables for sandbox bootstrap
	# Make the sandbox path absolute since it will be used from
	# different working directories when the dependency packages are
	# installed.
	SANDBOX=$(abspath "$SANDBOX")
	# Get the name of the package database which cabal sandbox would use.
	GHC_ARCH=$(ghc --info \|
	sed -n 's/."Target platform"."\([^-]\+\)-[^-]\+-\([^"]\+\)".*/\1-\2/p')
	PACKAGEDB="$SANDBOX/${GHC_ARCH}-ghc-${GHC_VER}-packages.conf.d"
	# Assume that if the directory is already there, it is already a
	# package database. We will get an error immediately below if it
	# isn't. Uses -r to try to be compatible with Solaris, and allow
	# symlinks as well as a normal dir/file.
	[ ! -r "$PACKAGEDB" ] && ghc-pkg init "$PACKAGEDB"
	PREFIX="$SANDBOX"
	SCOPE_OF_INSTALLATION="--package-db=$PACKAGEDB"
	echo Bootstrapping in sandbox at \'$SANDBOX\'.
	fi

	# Check for haddock unless no documentation should be generated.
	if [ ! ${NO_DOCUMENTATION} ]
	then
	${HADDOCK} --version > /dev/null 2>&1 \|\| die "${HADDOCK} not found."
	fi

	PREFIX=${PREFIX:-${DEFAULT_PREFIX}}

	# Versions of the packages to install.
	# The version regex says what existing installed versions are ok.
	PARSEC_VER="3.1.13.0"; PARSEC_VER_REGEXP="[3]\.[1]\."
	# >= 3.1 && < 3.2
	DEEPSEQ_VER="1.4.3.0"; DEEPSEQ_VER_REGEXP="1\.[1-9]\."
	# >= 1.1 && < 2
	BINARY_VER="0.8.3.0"; BINARY_VER_REGEXP="[0]\.[78]\."
	# >= 0.7 && < 0.9
	TEXT_VER="1.2.3.0"; TEXT_VER_REGEXP="[1]\.[2]\."
	# >= 1.2 && < 1.3
	NETWORK_URI_VER="2.6.1.0"; NETWORK_URI_VER_REGEXP="2\.6\.(0\.[2-9]\|[1-9])"
	# >= 2.6.0.2 && < 2.7
	NETWORK_VER="2.6.3.4"; NETWORK_VER_REGEXP="2\.[0-6]\."
	# >= 2.0 && < 2.7
	CABAL_VER="2.2.0.1"; CABAL_VER_REGEXP="2\.2\.[0-9]"
	# >= 2.2 && < 2.3
	TRANS_VER="0.5.5.0"; TRANS_VER_REGEXP="0\.[45]\."
	# >= 0.2.* && < 0.6
	MTL_VER="2.2.2"; MTL_VER_REGEXP="[2]\."
	# >= 2.0 && < 3
	HTTP_VER="4000.3.11"; HTTP_VER_REGEXP="4000\.(2\.([5-9]\|1[0-9]\|2[0-9])\|3\.?)"
	# >= 4000.2.5 < 4000.4
	ZLIB_VER="0.6.2"; ZLIB_VER_REGEXP="(0\.5\.([3-9]\|1[0-9])\|0\.6)"
	# >= 0.5.3 && <= 0.7
	TIME_VER="1.8.0.3" TIME_VER_REGEXP="1\.[1-8]\.?"
	# >= 1.1 && < 1.9
	RANDOM_VER="1.1" RANDOM_VER_REGEXP="1\.[01]\.?"
	# >= 1 && < 1.2
	STM_VER="2.4.5.0"; STM_VER_REGEXP="2\."
	# == 2.*
	HASHABLE_VER="1.2.7.0"; HASHABLE_VER_REGEXP="1\."
	# 1.*
	ASYNC_VER="2.2.1"; ASYNC_VER_REGEXP="2\."
	# 2.*
	BASE16_BYTESTRING_VER="0.1.1.6"; BASE16_BYTESTRING_VER_REGEXP="0\.1"
	# 0.1.*
	BASE64_BYTESTRING_VER="1.0.0.1"; BASE64_BYTESTRING_VER_REGEXP="1\."
	# >=1.0
	CRYPTOHASH_SHA256_VER="0.11.101.0"; CRYPTOHASH_SHA256_VER_REGEXP="0\.11\.?"
	# 0.11.*
	RESOLV_VER="0.1.1.1"; RESOLV_VER_REGEXP="0\.1\.[1-9]"
	# >= 0.1.1 && < 0.2
	MINTTY_VER="0.1.1"; MINTTY_VER_REGEXP="0\.1\.?"
	# 0.1.*
	ECHO_VER="0.1.3"; ECHO_VER_REGEXP="0\.1\.[3-9]"
	# >= 0.1.3 && < 0.2
	EDIT_DISTANCE_VER="0.2.2.1"; EDIT_DISTANCE_VER_REGEXP="0\.2\.2\.?"
	# 0.2.2.*
	ED25519_VER="0.0.5.0"; ED25519_VER_REGEXP="0\.0\.?"
	# 0.0.*
	HACKAGE_SECURITY_VER="0.5.3.0"; HACKAGE_SECURITY_VER_REGEXP="0\.5\.((2\.[2-9]\|[3-9])\|3)"
	# >= 0.5.2 && < 0.6
	TAR_VER="0.5.1.0"; TAR_VER_REGEXP="0\.5\.([1-9]\|1[0-9]\|0\.[3-9]\|0\.1[0-9])\.?"
	# >= 0.5.0.3 && < 0.6
	WINDNS_VER="0.1.0.0"; WINDNS_VER_REGEXP="0\.1\.?\.?"
	# >= 0.1.0 && < 0.2

	HACKAGE_URL="https://hackage.haskell.org/package"

	# Haddock fails for hackage-security for GHC <8,
	# c.f. https://github.com/well-typed/hackage-security/issues/149
	NO_DOCS_PACKAGES_VER_REGEXP="hackage-security-0\.5\.[0-9]+\.[0-9]+"

	# Cache the list of packages:
	echo "Checking installed packages for ghc-${GHC_VER}..."
	${GHC_PKG} list --global ${SCOPE_OF_INSTALLATION} > ghc-pkg.list \|\|
	die "running '${GHC_PKG} list' failed"

	# Will we need to install this package, or is a suitable version installed?
	need_pkg () {
	PKG=$1
	VER_MATCH=$2
	if egrep " ${PKG}-${VER_MATCH}" ghc-pkg.list > /dev/null 2>&1
	then
	return 1;
	else
	return 0;
	fi
	#Note: we cannot use "! grep" here as Solaris 9 /bin/sh doesn't like it.
	}

	info_pkg () {
	PKG=$1
	VER=$2
	VER_MATCH=$3

	if need_pkg ${PKG} ${VER_MATCH}
	then
	if [ -r "${PKG}-${VER}.tar.gz" ]
	then
	echo "${PKG}-${VER} will be installed from local tarball."
	else
	echo "${PKG}-${VER} will be downloaded and installed."
	fi
	else
	echo "${PKG} is already installed and the version is ok."
	fi
	}

	fetch_pkg () {
	PKG=$1
	VER=$2

	URL_PKG=${HACKAGE_URL}/${PKG}-${VER}/${PKG}-${VER}.tar.gz
	URL_PKGDESC=${HACKAGE_URL}/${PKG}-${VER}/${PKG}.cabal
	if which ${CURL} > /dev/null
	then
	${CURL} -L --fail -C - -O ${URL_PKG} \|\| die "Failed to download ${PKG}."
	${CURL} -L --fail -C - -O ${URL_PKGDESC} \
	\|\| die "Failed to download '${PKG}.cabal'."
	elif which ${WGET} > /dev/null
	then
	${WGET} -c ${URL_PKG} \|\| die "Failed to download ${PKG}."
	${WGET} -c ${URL_PKGDESC} \|\| die "Failed to download '${PKG}.cabal'."
	elif which ${FETCH} > /dev/null
	then
	${FETCH} ${URL_PKG} \|\| die "Failed to download ${PKG}."
	${FETCH} ${URL_PKGDESC} \|\| die "Failed to download '${PKG}.cabal'."
	else
	die "Failed to find a downloader. 'curl', 'wget' or 'fetch' is required."
	fi
	[ -f "${PKG}-${VER}.tar.gz" ] \|\|
	die "Downloading ${URL_PKG} did not create ${PKG}-${VER}.tar.gz"
	[ -f "${PKG}.cabal" ] \|\|
	die "Downloading ${URL_PKGDESC} did not create ${PKG}.cabal"
	mv "${PKG}.cabal" "${PKG}.cabal.hackage"
	}

	unpack_pkg () {
	PKG=$1
	VER=$2

	rm -rf "${PKG}-${VER}.tar" "${PKG}-${VER}"
	${GZIP_PROGRAM} -d < "${PKG}-${VER}.tar.gz" \| ${TAR} -xf -
	[ -d "${PKG}-${VER}" ] \|\| die "Failed to unpack ${PKG}-${VER}.tar.gz"
	cp "${PKG}.cabal.hackage" "${PKG}-${VER}/${PKG}.cabal"
	}

	install_pkg () {
	PKG=$1
	VER=$2

	[ -x Setup ] && ./Setup clean
	[ -f Setup ] && rm Setup

	PKG_DBS=$(printf '%s\n' "${SCOPE_OF_INSTALLATION}" \
	\| sed -e 's/--package-db/-package-db/' \
	-e 's/--global/-global-package-db/' \
	-e 's/--user/-user-package-db/')

	${GHC} --make ${JOBS} ${PKG_DBS} Setup -o Setup -XRank2Types -XFlexibleContexts \|\|
	die "Compiling the Setup script failed."

	[ -x Setup ] \|\| die "The Setup script does not exist or cannot be run"

	args="${SCOPE_OF_INSTALLATION} --prefix=${PREFIX} --with-compiler=${GHC}"
	args="$args --with-hc-pkg=${GHC_PKG} --with-gcc=${CC} --with-ld=${LD}"
	args="$args ${EXTRA_CONFIGURE_OPTS} ${VERBOSE}"

	./Setup configure $args \|\| die "Configuring the ${PKG} package failed."

	./Setup build ${JOBS} ${EXTRA_BUILD_OPTS} ${VERBOSE} \|\|
	die "Building the ${PKG} package failed."

	if [ ! ${NO_DOCUMENTATION} ]
	then
	if echo "${PKG}-${VER}" \| egrep ${NO_DOCS_PACKAGES_VER_REGEXP} \
	> /dev/null 2>&1
	then
	echo "Skipping documentation for the ${PKG} package."
	else
	./Setup haddock --with-ghc=${GHC} --with-haddock=${HADDOCK} ${VERBOSE} \|\|
	die "Documenting the ${PKG} package failed."
	fi
	fi

	./Setup install ${EXTRA_INSTALL_OPTS} ${VERBOSE} \|\|
	die "Installing the ${PKG} package failed."
	}

	do_pkg () {
	PKG=$1
	VER=$2
	VER_MATCH=$3

	if need_pkg ${PKG} ${VER_MATCH}
	then
	echo
	if [ -r "${PKG}-${VER}.tar.gz" ]
	then
	echo "Using local tarball for ${PKG}-${VER}."
	else
	echo "Downloading ${PKG}-${VER}..."
	fetch_pkg ${PKG} ${VER}
	fi
	unpack_pkg "${PKG}" "${VER}"
	(cd "${PKG}-${VER}" && install_pkg ${PKG} ${VER})
	fi
	}

	# If we're bootstrapping from a Git clone, install the local version of Cabal
	# instead of downloading one from Hackage.
	do_Cabal_pkg () {
	if [ -d "../.git" ]
	then
	if need_pkg "Cabal" ${CABAL_VER_REGEXP}
	then
	echo "Cabal-${CABAL_VER} will be installed from the local Git clone."
	(cd ../Cabal && install_pkg ${CABAL_VER} ${CABAL_VER_REGEXP})
	else
	echo "Cabal is already installed and the version is ok."
	fi
	else
	info_pkg "Cabal" ${CABAL_VER} ${CABAL_VER_REGEXP}
	do_pkg "Cabal" ${CABAL_VER} ${CABAL_VER_REGEXP}
	fi
	}

	# Actually do something!

	info_pkg "deepseq" ${DEEPSEQ_VER} ${DEEPSEQ_VER_REGEXP}
	info_pkg "binary" ${BINARY_VER} ${BINARY_VER_REGEXP}
	info_pkg "time" ${TIME_VER} ${TIME_VER_REGEXP}
	info_pkg "transformers" ${TRANS_VER} ${TRANS_VER_REGEXP}
	info_pkg "mtl" ${MTL_VER} ${MTL_VER_REGEXP}
	info_pkg "text" ${TEXT_VER} ${TEXT_VER_REGEXP}
	info_pkg "parsec" ${PARSEC_VER} ${PARSEC_VER_REGEXP}
	info_pkg "network-uri" ${NETWORK_URI_VER} ${NETWORK_URI_VER_REGEXP}
	info_pkg "network" ${NETWORK_VER} ${NETWORK_VER_REGEXP}
	info_pkg "HTTP" ${HTTP_VER} ${HTTP_VER_REGEXP}
	info_pkg "zlib" ${ZLIB_VER} ${ZLIB_VER_REGEXP}
	info_pkg "random" ${RANDOM_VER} ${RANDOM_VER_REGEXP}
	info_pkg "stm" ${STM_VER} ${STM_VER_REGEXP}
	info_pkg "hashable" ${HASHABLE_VER} ${HASHABLE_VER_REGEXP}
	info_pkg "async" ${ASYNC_VER} ${ASYNC_VER_REGEXP}
	info_pkg "base16-bytestring" ${BASE16_BYTESTRING_VER} \
	${BASE16_BYTESTRING_VER_REGEXP}
	info_pkg "base64-bytestring" ${BASE64_BYTESTRING_VER} \
	${BASE64_BYTESTRING_VER_REGEXP}
	info_pkg "cryptohash-sha256" ${CRYPTOHASH_SHA256_VER} \
	${CRYPTOHASH_SHA256_VER_REGEXP}
	#info_pkg "resolv" ${RESOLV_VER} ${RESOLV_VER_REGEXP}
	info_pkg "mintty" ${MINTTY_VER} ${MINTTY_VER_REGEXP}
	info_pkg "echo" ${ECHO_VER} ${ECHO_VER_REGEXP}
	info_pkg "edit-distance" ${EDIT_DISTANCE_VER} ${EDIT_DISTANCE_VER_REGEXP}
	info_pkg "ed25519" ${ED25519_VER} ${ED25519_VER_REGEXP}
	info_pkg "tar" ${TAR_VER} ${TAR_VER_REGEXP}
	info_pkg "hackage-security" ${HACKAGE_SECURITY_VER} \
	${HACKAGE_SECURITY_VER_REGEXP}
	info_pkg "windns" ${WINDNS_VER} ${WINDNS_VER_REGEXP}

	do_pkg "deepseq" ${DEEPSEQ_VER} ${DEEPSEQ_VER_REGEXP}
	do_pkg "binary" ${BINARY_VER} ${BINARY_VER_REGEXP}
	do_pkg "time" ${TIME_VER} ${TIME_VER_REGEXP}

	# Cabal might depend on these
	do_pkg "transformers" ${TRANS_VER} ${TRANS_VER_REGEXP}
	do_pkg "mtl" ${MTL_VER} ${MTL_VER_REGEXP}
	do_pkg "text" ${TEXT_VER} ${TEXT_VER_REGEXP}
	do_pkg "parsec" ${PARSEC_VER} ${PARSEC_VER_REGEXP}

	# Install the Cabal library from the local Git clone if possible.
	do_Cabal_pkg

	do_pkg "network-uri" ${NETWORK_URI_VER} ${NETWORK_URI_VER_REGEXP}
	do_pkg "network" ${NETWORK_VER} ${NETWORK_VER_REGEXP}
	do_pkg "HTTP" ${HTTP_VER} ${HTTP_VER_REGEXP}
	do_pkg "zlib" ${ZLIB_VER} ${ZLIB_VER_REGEXP}
	do_pkg "random" ${RANDOM_VER} ${RANDOM_VER_REGEXP}
	do_pkg "stm" ${STM_VER} ${STM_VER_REGEXP}
	do_pkg "hashable" ${HASHABLE_VER} ${HASHABLE_VER_REGEXP}
	do_pkg "async" ${ASYNC_VER} ${ASYNC_VER_REGEXP}
	do_pkg "base16-bytestring" ${BASE16_BYTESTRING_VER} \
	${BASE16_BYTESTRING_VER_REGEXP}
	do_pkg "base64-bytestring" ${BASE64_BYTESTRING_VER} \
	${BASE64_BYTESTRING_VER_REGEXP}
	do_pkg "cryptohash-sha256" ${CRYPTOHASH_SHA256_VER} \
	${CRYPTOHASH_SHA256_VER_REGEXP}
	#do_pkg "resolv" ${RESOLV_VER} ${RESOLV_VER_REGEXP}
	do_pkg "mintty" ${MINTTY_VER} ${MINTTY_VER_REGEXP}
	do_pkg "echo" ${ECHO_VER} ${ECHO_VER_REGEXP}
	do_pkg "edit-distance" ${EDIT_DISTANCE_VER} ${EDIT_DISTANCE_VER_REGEXP}
	do_pkg "ed25519" ${ED25519_VER} ${ED25519_VER_REGEXP}
	do_pkg "tar" ${TAR_VER} ${TAR_VER_REGEXP}
	do_pkg "hackage-security" ${HACKAGE_SECURITY_VER} \
	${HACKAGE_SECURITY_VER_REGEXP}
	do_pkg "windns" ${WINDNS_VER} ${WINDNS_VER_REGEXP}


	install_pkg "cabal-install"

	# Use the newly built cabal to turn the prefix/package database into a
	# legit cabal sandbox. This works because 'cabal sandbox init' will
	# reuse the already existing package database and other files if they
	# are in the expected locations.
	[ ! -z "$SANDBOX" ] && $SANDBOX/bin/cabal sandbox init --sandbox $SANDBOX

	echo
	echo "==========================================="
	CABAL_BIN="$PREFIX/bin"
	if [ -x "$CABAL_BIN/cabal" ]
	then
	echo "The 'cabal' program has been installed in $CABAL_BIN/"
	echo "You should either add $CABAL_BIN to your PATH"
	echo "or copy the cabal program to a directory that is on your PATH."
	echo
	echo "The first thing to do is to get the latest list of packages with:"
	echo " cabal update"
	echo "This will also create a default config file (if it does not already"
	echo "exist) at $HOME/.cabal/config"
	echo
	echo "By default cabal will install programs to $HOME/.cabal/bin"
	echo "If you do not want to add this directory to your PATH then you can"
	echo "change the setting in the config file, for example you could use:"
	echo "symlink-bindir: $HOME/bin"
	else
	echo "Sorry, something went wrong."
	echo "The 'cabal' executable was not successfully installed into"
	echo "$CABAL_BIN/"
	fi
	echo

	rm ghc-pkg.list