#!/bin/sh
# Bootstraps from an empty cabal to all the necessary haskell packages
# being installed, with the necessary patches to work on Android.
#
# Note that the newest version of packages is installed. 
# It attempts to reuse patches for older versions, but 
# new versions of packages often break cross-compilation by adding TH, 
# etc
# 
# Needs some extra C libraries and packages to be installed
# on the host system:
# libgnutls-dev libxml2-dev libgsasl7-dev pkg-config c2hs
#
# Also needs some C libraries to be installed inside the cross-compiler
# lib directory (~/.ghc/android-14/arm-linux-androideabi-4.7/arm-linux-androideabi/sysroot/usr/lib/)
# , cross-compiled for Android: libgnutls libxml2

set -e

cabalopts="$@"

cabalinstall () {
	echo cabal install "$@" "$cabalopts"
	eval cabal install "$@" "$cabalopts"
}

patched () {
	pkg=$1
	shift 1
	cabal unpack $pkg
	cd $pkg*
	git init
	git add .
	git commit -m "pre-patched state of $pkg"
	for patch in ../../haskell-patches/${pkg}_*; do
		echo trying $patch
		if ! patch -p1 < $patch; then
			echo "failed to apply $patch"
			echo "please resolve this, replace the patch with a new version, and exit the subshell to continue"
			$SHELL
		fi
	done
	cabalinstall "$@"
	rm -rf $pkg*
	cd ..
}

unpatched () {
	cabalinstall "$@"
}

installgitannexdeps () {
	echo cabal install git-annex --only-dependencies
	cabal install git-annex --only-dependencies "$@"
}

install_pkgs () {
	rm -rf tmp
	mkdir tmp
	cd tmp

	patched network
	patched lifted-base
	patched zlib
	patched process
	patched MissingH
	patched bloomfilter
	patched SafeSemaphore
	patched unordered-containers
	patched comonad
	patched HTTP
	patched MonadCatchIO-transformers
	patched distributive
	patched iproute
	patched primitive
	patched socks
	patched entropy
	patched vector
	patched wai-app-static
	patched persistent
	patched profunctors
	patched skein
	patched lens
	patched shakespeare
	patched shakespeare-css
        patched shakespeare-js
	patched DAV
	patched persistent-template
	patched hamlet
	patched yesod-core
	patched yesod-persistent
	patched yesod-form
	patched yesod-auth
	patched yesod

	installgitannexdeps -f-Pairing -f-XMPP

	cd ..
	rm -rf tmp
}

echo
echo
echo native build
echo
cabal install cabal-install
cabal update
installgitannexdeps

echo 
echo
echo cross build
echo
PATH=$HOME/.ghc/android-14/arm-linux-androideabi-4.7/bin:$HOME/.ghc/android-14/arm-linux-androideabi-4.7/arm-linux-androideabi/bin:$PATH
cabal install cabal-install
cabal update
install_pkgs