Upgrade dependencies and install xapian from sources

core/management/commands/install_xapian.sh

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+# Originates from https://gist.github.com/jorgecarleitao/ab6246c86c936b9c55fd
+# first argument of the script is Xapian version (e.g. 1.2.19)
+VERSION=$1
+
+# Cleanup env vars for auto discovery mechanism
+export CPATH=
+export LIBRARY_PATH=
+export CFLAGS=
+export LDFLAGS=
+export CCFLAGS=
+export CXXFLAGS=
+export CPPFLAGS=
+
+# prepare
+rm -rf $VIRTUAL_ENV/packages
+mkdir -p $VIRTUAL_ENV/packages && cd $VIRTUAL_ENV/packages
+
+CORE=xapian-core-$VERSION
+BINDINGS=xapian-bindings-$VERSION
+
+# download
+echo "Downloading source..."
+curl -O https://oligarchy.co.uk/xapian/$VERSION/${CORE}.tar.xz
+curl -O https://oligarchy.co.uk/xapian/$VERSION/${BINDINGS}.tar.xz
+
+# extract
+echo "Extracting source..."
+tar xf ${CORE}.tar.xz
+tar xf ${BINDINGS}.tar.xz
+
+# install
+echo "Installing Xapian-core..."
+cd $VIRTUAL_ENV/packages/${CORE}
+./configure --prefix=$VIRTUAL_ENV && make && make install
+
+PYV=`python -c "import sys;t='{v[0]}'.format(v=list(sys.version_info[:1]));sys.stdout.write(t)";`
+
+PYTHON_FLAG=--with-python3
+
+echo "Installing Xapian-bindings..."
+cd $VIRTUAL_ENV/packages/${BINDINGS}
+./configure --prefix=$VIRTUAL_ENV $PYTHON_FLAG XAPIAN_CONFIG=$VIRTUAL_ENV/bin/xapian-config && make && make install
+
+# clean
+rm -rf $VIRTUAL_ENV/packages
+
+# test
+python -c "import xapian"