Extract some .travis.yml bits into scripts

Author: meatballhat

.travis.yml

@@ -25,24 +25,9 @@ install:
   - sudo git pull
   - popd
 
-script:
-  - pushd $HOME
-  - sudo env PYTHON_BUILD_ROOT=/opt/pyenv/plugins/python-build
-      /opt/pyenv/plugins/python-build/bin/python-build $VERSION $INSTALL_DEST/$VERSION
-  - sudo ln -s $INSTALL_DEST/$VERSION $INSTALL_DEST/$ALIAS
-  - virtualenv --distribute --python=$INSTALL_DEST/$VERSION/bin/python
-      /home/travis/virtualenv/python$VERSION
-  - ln -s $HOME/virtualenv/python$VERSION $HOME/virtualenv/python$ALIAS
-  - $HOME/virtualenv/python$VERSION/bin/pip install --upgrade $PACKAGES
-  - popd
+script: ./build-python
 
-after_success:
-  - mkdir -p $TRAVIS_BUILD_DIR/$LSB_RELEASE
-  - tar cjf $TRAVIS_BUILD_DIR/$LSB_RELEASE/python-$ALIAS.tar.bz2
-      $INSTALL_DEST/$VERSION
-      $INSTALL_DEST/$ALIAS
-      $HOME/virtualenv/python$VERSION
-      $HOME/virtualenv/python$ALIAS
+after_success: ./create-archive
 
 after_failure:
   - cat /tmp/python-build.*.log

build-python

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+set -o errexit
+
+[[ $INSTALL_DEST ]]
+[[ $VERSION ]]
+
+sudo env PYTHON_BUILD_ROOT=/opt/pyenv/plugins/python-build \
+  /opt/pyenv/plugins/python-build/bin/python-build $VERSION $INSTALL_DEST/$VERSION
+
+if [[ $ALIAS ]] ; then
+  sudo ln -s $INSTALL_DEST/$VERSION $INSTALL_DEST/$ALIAS
+fi
+
+virtualenv --distribute --python=$INSTALL_DEST/$VERSION/bin/python \
+  /home/travis/virtualenv/python$VERSION
+
+if [[ $ALIAS ]] ; then
+  ln -s $HOME/virtualenv/python$VERSION $HOME/virtualenv/python$ALIAS
+fi
+
+if [[ $PACKAGES ]] ; then
+  $HOME/virtualenv/python$VERSION/bin/pip install --upgrade $PACKAGES
+fi

create-archive

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+set -o errexit
+
+[[ $LSB_RELEASE ]]
+[[ $INSTALL_DEST ]]
+[[ $VERSION ]]
+
+: ${TAR_PATHS:=}
+: ${DEST:=${1}}
+
+TAR_PATHS="$TAR_PATHS $INSTALL_DEST/$VERSION $HOME/virtualenv/python$VERSION"
+
+if [[ $ALIAS ]] ; then
+  TAR_PATHS="$TAR_PATHS $INSTALL_DEST/$ALIAS $HOME/virtualenv/python$ALIAS"
+  DEST="$TRAVIS_BUILD_DIR/$LSB_RELEASE/python-${ALIAS}.tar.bz2"
+else
+  if [[ ! $DEST ]] ; then
+    DEST="$TRAVIS_BUILD_DIR/$LSB_RELEASE/python-${VERSION}.tar.bz2"
+  fi
+fi
+
+mkdir -p $(dirname $DEST)
+exec tar -cjf $DEST $TAR_PATHS