#!/bin/bash

# morepackages/singles.list

set -x
set -e
set -o pipefail

date
echo "\$Id: singles-install.sh,v 1.5 2017/01/14 22:25:52 kenta Exp $"

version=8.0.1
#unfortunately, each new stackage requires a new compiler build, because prefix is hardcoded
stackage=lts-7.14
#7.8 .. 7.12 do Cabal-1.24.1.0 which is uninstallable
#7.14 has a conflict between cryptohash and cryptohash-sha1 when compiling executable-hash
#future: look up latest lts via curl -I https://www.stackage.org/lts
#using /tmp allows easier migration to other machines
localhd=/var/tmp/kenta/hdd/ghc
#indexed by stackage because hardcoded prefix
builddir=$localhd/ghc-build-$version-$stackage
basedir=/afs/sipb.mit.edu/project/ghc/arch/$ATHENA_SYS/install

# 2 = simple -v switch
cabal_verbosity=3

# Note: gcc is often found in the output of ghc --info and not PATH
my_gcc_dir=/afs/sipb.mit.edu/project/gcc-6plus
system_path=$my_gcc_dir/bin:/usr/bin:/bin
export LD_RUN_PATH=$my_gcc_dir/lib
ls -l $LD_RUN_PATH

# GHC does not see LD_RUN_PATH, if there is another Wl rpath on the command line (and there is)
ghc_option_rpath=--ghc-option=-optl-Wl,-rpath,$my_gcc_dir/lib

# kenta has a local perl dir, which causes perl to fail if unreadable (due to unlog)
unset PERL5LIB

if [ "$1" = "local" ]
then basedir=$localhd$basedir
    #create a symlink
    test -e $localhd
#avoid misbehaving packages from doing too much harm
kdestroy
unlog
elif [ "$1" = "afs" ]
then :
else echo "specify local or afs"
    exit 1
fi
target=$basedir/$version-$stackage
extrabin=$target/hackage-bin/versioned
workarea=$target/workarea
cabalhome=$workarea/home

cabalrc=$cabalhome/.cabal
cabalconfig=$cabalrc/config

export PATH=$target/bin:$system_path
hash -r

which cabal
cabal -V
which ghc
ghc --version

for file in executable-hash
do checksum=$(perl -we 'printf("%01x",unpack("%8C*","'$file'")%16)')
    HOME=$cabalhome nice -19 time cabal --config-file=$cabalconfig install --verbose=$cabal_verbosity -p --global --prefix=$target --bindir=$extrabin/$file --libdir=$target/lib-separated/$checksum --extra-include-dirs=$target/nettle  --extra-lib-dirs=$target/nettle/nettle $ghc_option_rpath  $file || true
done
dirs
date
echo all done