begin work on installing TH-using dependencies of webapp, for standalone armel build

Will move common patches out of android/haskell-patches.

standalone/android/install-haskell-packages

@@ -35,13 +35,15 @@ patched () {
 	git config user.email dummy@example.com
 	git add .
 	git commit -m "pre-patched state of $pkg"
-	for patch in ../../haskell-patches/${pkg}_*; do
+	for patch in ../../haskell-patches/${pkg}_* ../../../haskell-patches/no-th/${pkg}_*; do
+		if [ -e "$patch" ]; then
 			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"
 				$SHELL
 			fi
+		fi
 	done
 	cabalinstall "$@"
 	rm -rf $pkg*

standalone/linux/install-haskell-packages

@@ -0,0 +1,72 @@
+#!/bin/bash
+# Bootstraps from an empty cabal (plus apt-get build-dep git-annex)
+# to all the necessary haskell packages being installed, with the
+# necessary patches to work on architectures that lack template haskell.
+#
+# 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
+#
+# Future work: Convert to using the method used here:
+# https://github.com/kaoskorobase/ghc-ios-cabal-scripts/
+
+set -e
+
+if [ ! -d ../haskell-patches ]; then
+	cd standalone/linux
+fi
+
+cabalopts="$@"
+
+cabalinstall () {
+	echo cabal install "$@" "$cabalopts"
+	eval cabal install "$@" "$cabalopts"
+}
+
+patched () {
+	pkg=$1
+	shift 1
+	cabal unpack $pkg
+	cd $pkg*
+	git init
+	git config user.name dummy
+	git config user.email dummy@example.com
+	git add .
+	git commit -m "pre-patched state of $pkg"
+	for patch in ../../../haskell-patches/no-th/${pkg}_*; do
+		if [ -e "$patch" ]; then
+			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"
+				$SHELL
+			fi
+		fi
+	done
+	cabalinstall "$@"
+	rm -rf $pkg*
+	cd ..
+}
+
+installgitannexdeps () {
+	pushd ../..
+	echo cabal install --only-dependencies "$@"
+	cabal install --only-dependencies "$@"
+	popd
+}
+
+install_pkgs () {
+	rm -rf tmp
+	mkdir tmp
+	cd tmp
+
+	patched DAV
+
+	cd ..
+
+	installgitannexdeps
+}
+
+cabal update
+install_pkgs