refactor Python package installation, install for Wercker too

Author: Vladimir Kotal

dev/before_install

@@ -6,19 +6,20 @@ if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
 		echo "cannot update"
 		exit 1
 	fi
-	sudo apt-get install -qq cvs git mercurial cssc bzr subversion monotone rcs rcs-blame python3 python3.4-venv python3-pip pep8 nodejs 
+
+	sudo apt-get install -qq cvs git mercurial cssc bzr subversion monotone rcs rcs-blame python3 python3.4-venv python3-pip nodejs
 	if [[ $? != 0 ]]; then
 		echo "cannot install extra packages"
 		exit 1
 	fi
+
 	sudo ./dev/install-bitkeeper.sh
-	sudo pip3 install --upgrade pip
-	sudo pip3 install flake8 pylint
+	sudo ./dev/install-python-packages
 elif [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
 	brew update
 	brew install ctags cvs node
 	brew upgrade python
-	pip3 install pep8 flake8 virtualenv pylint
+	./dev/install-python-packages.sh
 fi
 
 sudo ./dev/install-universal_ctags.sh

dev/install-python-packages.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+pip3 install --upgrade pip
+pip3 install pep8 flake8 virtualenv pylint

wercker.yml

@@ -12,7 +12,7 @@ box: openjdk:8-jdk
 build:
   steps:
     - install-packages:
-      packages: sudo maven cvs git mercurial cssc bzr subversion monotone rcs pep8 flake8 autoconf python3 python3-venv build-essential pkg-config
+      packages: sudo maven cvs git mercurial cssc bzr subversion monotone rcs autoconf python3 python3-venv build-essential pkg-config
     - script:
       name: Install Universal ctags
       code: ./dev/install-universal_ctags.sh
@@ -22,6 +22,9 @@ build:
         /usr/sbin/groupadd -g 1000 foobar
         /usr/sbin/useradd -u 1000 -g 1000 -s /bin/bash -m foobar
         chown -R foobar:foobar $WERCKER_ROOT
+    - script:
+      name: Install Python packages
+      code: ./dev/install-python-packages.sh
     - wercker/[email protected]:
       goals: install
       cache_repo: true