...

# https://stackoverflow.com/a/48285243
​
cd pegasus-src/lib/pegasus/python/
​
# Debian 9
docker run -i --rm -w /srv -v `pwd`:/srv debian:9 bash  -s <<EOT
apt-get update && apt-get -y install python-pip python-setuptools debhelper
pip install stdeb
rm -rf ./x
pip download --no-binary=:all: . -d x
cd x
tar zxvf pika-1.1.0.tar.gz
cd pika-1.1.0
python setup.py --command-packages=stdeb.command bdist_deb
EOT
​
# CentOS 7
docker run -i --rm -w /srv -v `pwd`:/srv centos:7 bash  -s <<EOT
yum -y install epel-release 
yum -y install python36-pip python36-setuptools rpm-build
rm -rf ./x
pip download --no-binary=:all: . -d x
cd x
tar zxvf pika-1.1.0.tar.gz
cd pika-1.1.0
python3 setup.py bdist --formats=rpm

Minimum Python Version

Pegasus Code except Worker Package

Lowest common version across supported platforms is Image Removed

Worker Package

Lowest common version across supported platforms is Image Removed / Image Removed

Mats Rynge Can we expect Python 2.7 to be available on CentOS 6?

Mats Rynge List Python components included in worker package.

1. Use python-six compatibility library.
2. Refactor code such that Python 3 code is made Python 2 compatible instead of the opposite.
3. See: https://python-future.org/compatible_idioms.html
4. See: https://docs.python.org/3/howto/pyporting.html

Pegasus Code except Worker Package

Continue src/externals

Platform specific packages, python-flask

Will need to test with the lowest common available version across supported platforms.

Will require more platform specific integration tests.

Run pre/post install scripts to install using pip, i.e. pip install Flask.

Mats Rynge Do .rpm, .deb packages support this? Mats: this is only allowed if you do into your own space (which is similar to what we do with externals. You are not allowed to pip install to the system location)

Packages may conflict with system installed packages. yum install python-flask (v0.9) vs pip install Flask (v1.0.2)

Latter two will require more platform specific integration tests to detect incompatible, missing dependencies.

Worker Package

Continue src/externals

Only for packages not expected to be available on supported platforms.

"Vendorize"

Copy dependency code into Pegasus.vendor directory.

# Instead of this
import six

# Use this
import Pegasus.vendor.six

Testing

Environment

...

Using pytest instead of unittest

...

See: https://docs.pytest.org/en/latest/contents.html

Pegasus Code except Worker Package

Continue src/externals

Platform specific packages, python-flask

Will need to test with the lowest common available version across supported platforms.

Will require more platform specific integration tests.

Run pre/post install scripts to install using pip, i.e. pip install Flask.

Mats Rynge Do .rpm, .deb packages support this? Mats: this is only allowed if you do into your own space (which is similar to what we do with externals. You are not allowed to pip install to the system location)

Packages may conflict with system installed packages. yum install python-flask (v0.9) vs pip install Flask (v1.0.2)

Latter two will require more platform specific integration tests to detect incompatible, missing dependencies.

Worker Package

Continue src/externals

Only for packages not expected to be available on supported platforms.

"Vendorize"

Copy dependency code into Pegasus.vendor directory.

# Instead of this
import six

# Use this
import Pegasus.vendor.six

...

-- RESOLVED --

Minimum Python Version

Pegasus Code except Worker Package

Lowest common version across supported platforms is Image Added

Worker Package

Lowest common version across supported platforms is Image Added / Image Added

Mats Rynge Can we expect Python 2.7 to be available on CentOS 6?

Mats Rynge List Python components included in worker package.

1. Use python-six compatibility library.
2. Refactor code such that Python 3 code is made Python 2 compatible instead of the opposite.
3. See: https://python-future.org/compatible_idioms.html
4. See: https://docs.python.org/3/howto/pyporting.html