Add pylocation script

aux/pylocation/pylocation.sh

@@ -0,0 +1,46 @@
+#!/bin/bash
+
+if [ ! -z "$PYTHON_BIN_PATH" ]; then
+	>&2 echo "PYTHON_BIN_PATH already set to $PYTHON_BIN_PATH"
+	echo -n $PYTHON_BIN_PATH
+else
+	set +a
+	set +e
+
+	d=`mktemp -d`
+	u=`dd if=/dev/urandom bs=16 count=1 2> /dev/null | hexdump -v -n 16 -e '1/1 "%02x"'`
+	mkdir -p $d/$u
+	cat <<EOF >> $d/setup.py
+from setuptools import setup
+
+setup(
+	name="$u",
+	version="0.0.0",
+	packages=[
+		"$u",
+	],
+	entry_points={
+		"console_scripts": [
+			"$u.bin=$u:main",
+		],
+	},
+)
+EOF
+
+	cat <<EOF >> $d/$u/__init__.py
+def main():
+	pass
+EOF
+
+	pushd $d > /dev/null
+	python setup.py --quiet sdist
+	pip install -q dist/${u}-0.0.0.tar.gz
+	p=`which $u.bin`
+	pip uninstall -q -y $u
+	export PYTHON_BIN_PATH=$(dirname $p)
+	echo -n $PYTHON_BIN_PATH
+	popd > /dev/null
+
+	set -e
+	set -a
+fi

setup.sh

@@ -14,8 +14,6 @@ PIP_EXTRA_INDEX_URL=${PIP_EXTRA_INDEX_URL:-https://pip.grassrootseconomics.net:8
 PIP_INDEX_URL=${PIP_INDEX_URL:-"https://pypi.org/simple"}
 CIC_SETUP_TRUSTED_FINGERPRINT=${CIC_SETUP_TRUSTED_FINGERPRINT:-0826EDA1702D1E87C6E2875121D2E7BB88C2A746}
 CIC_ROOT_URL=${CIC_ROOT_URL:-https://root.grassrootseconomics.net}
-default_python_path=$(dirname $(which python))
-PYTHON_BIN_PATH=${PYTHON_BIN_PATH:-$default_python_path}
 
 if [ "$UID" -eq 0 ]; then
 	dbg $dbg_error "This cannot be run as root"
@@ -166,7 +164,6 @@ set +a
 
 . setup_systemd.sh
 
-echo foo $INSTALL_EVM
 if [ ! -z $INSTALL_EVM ]; then
 	. setup_${INSTALL_EVM}.sh
 fi

setup_systemd.sh

@@ -9,6 +9,9 @@ _debug=1
 cp -v systemd/cic-cache-server.service $HOME/.config/systemd/user/
 cp -v systemd/bloxberg.service $HOME/.config/systemd/user/
 dbg $dbg_debug "writing rendered services file $p"
+
+export PYTHON_BIN_PATH=`. aux/pylocation/pylocation.sh 2> /dev/null`
+dbg $dbg_info "using python bin path $PYTHON_BIN_PATH for systemd executables"
 PYTHON_BIN_PATH=$PYTHON_BIN_PATH ./aux/bash-templater/templater.sh systemd/cic-cache-tracker.service > $HOME/.config/systemd/user/cic-cache-tracker.service
 
 for f in systemd/env/*.conf; do