You are a software developer and want to learn about the Lino framework! That's a great idea! The world needs people like you!
This website is meant for people who write source code. It is meant for everybody who wants to learn about Lino, independently of their experience level. It should be useful for students, volunteers, freelancers or employees who work for themselves, a development provider or a site operator.
To be more precise we should say Programming Guide instead of Developer Guide. Because somebody who writes and maintains source code is called a programmer. Developing a software product is more than writing source code. On the other hand, especially with Lino, it is difficult to separate the different activities of the software development process. Lino encourages programmers to care about the whole project.
By following this guide you can virtually start an internship at home. If you need help. simply contact one of the team directly via email. There is no online application form because we are a small team. One of us will be your mentor and will communicate with you individually. You may interrupt or abandon your internship at any moment.
During your internship you will get quality support for free. You just need to ask. We help you to enter the business of software development with just your own time as your only investment. Try to do that with some proprietary framework!
Your time investment doesn't get lost in case you would decide to leave our team. Lino and its documentation, including this website, are available for free for everybody and forever. You will always be allowed to use what you learned for making money, either on your own or together with others (see How to make money with Lino). Try to do that with some proprietary framework!
We have a good reason for helping you with getting your business started: we want Lino to have a sustainable and diverse community of users.
During your internship you will
work independently and at a rhythm that suits you.
gain experience with working in a free open-source software project
increase your chances on the job market
You will learn among others
how to use Lino and its underlying framework, Django
how to use git for sharing your work with others
how to monitor and use continuous integration on GitLab
Possible outcome of your internship
Your code contributions are forever visible in the Lino repositories.
You wrote your own Lino application
You set up and run a production site for a real-world site operator
Your mentor writes an individual internship certificate
You find a job as a Lino application developer
You start your own company as a Lino service provider
Of course we provide this support only as much as our human resources allow. We do our best, not more.
Experience with the Python programming language will accelerate your progress but is not required.
A requirement that might sound hard if you never tried it: you need to feel at home on a Linux computer. Lino is a web application framework. A typical Lino production site runs on a pure Debian VPS (see Set up a Lino production server). Lino itself does not require a specific operating system, but on a proprietary operating system you are likely to encounter problems that are not our business. Welcome to the world of Free Software :-)
In case you don't believe that this requirement is actually a chance: Seth Kenlon shares 21 reasons why I think everyone should try Linux. If you hesitate about which Linux distribution to start with, we recommend Ubuntu. If you can't stop using MS-Windows as your primary OS right now, check out Windows Subsystem for Linux (WSL). See here or here.
That's why we assume that you have a computer with a Linux operating system at your disposal.
We assume you are familiar with the Linux shell at least for basic file
permissions, environment variables, bash scripts etc. Otherwise we suggest to
read Working in a UNIX shell before going on.
The developer guide is written for Debian and derived distributions. Other Linuxes should be pretty similar.
"Begin at the beginning," the King said, very gravely, "and go on till you come to the end: then stop." -- Lewis Carroll, Alice in Wonderland
As a first step, your mentor will ask you to read this guide sequentially.
Reading this guide sequentially means that you use the previous/next links. They are on the top and on the bottom of each page, they are even linked to the left / right arrows keys of your keyboard. Consider the inline links in this guide like footnotes of a book: You are welcome to follow these footnotes, but please take care to return to the place you left and continue your journey, because these footnotes lead you into the labyrinth of documentation.
Unlike Carroll's Wonderland, this guide is neither perfect nor definitive. Lino constantly evolves. The pages on this website can become obsolete, useless, boring, or turn out to be at the wrong place.
So don't be shy to ask questions. Tell your mentor when you get stuck or have the feeling that some page is useless, boring or difficult to understand.
Keep in mind that every feedback, even critical feedback, the mere fact of asking for help, is already a contribution to making this guide better. The Lino community thanks you in advance.
You don't need to be perfect, you will learn on your way, and we will help you to learn. And which is more: we will learn from you.