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wtf is qgis4.0_api?

qgis/qgis4.0_api — explained in plain English

Analysis updated 2026-08-08 · repo last pushed 2018-06-24

★ 4Audience · developerComplexity · 1/5DormantSetup · easy

TL;DR

A planning and discussion space where QGIS developers track proposed changes to the mapping software's programming interface for the upcoming 4.0 release. Contains no code, only issue threads for community transparency.

Mindmap

mindmap
  root((repo))
    What it does
      Tracks API changes
      Public discussion board
      No code only issues
    Audience
      Plugin developers
      Core maintainers
      QGIS contributors
    Use cases
      Review upcoming changes
      Voice concerns publicly
      Plan plugin updates
    Context
      QGIS mapping app
      Version 4.0 planning
      Open source project

Code map

Detail Auto

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filefunction / class

Why would anyone build with this?

REASON 1

Review upcoming API changes before QGIS 4.0 ships to plan plugin updates.

REASON 2

Participate in discussions about how the QGIS programming interface should evolve.

REASON 3

Track which parts of the QGIS API are being considered for removal or modification.

REASON 4

Observe how a major open-source mapping platform plans its structural changes transparently.

What's in the stack?

QGISGitHub Issues

How it stacks up

qgis/qgis4.0_api0labs-in/vision-link1038lab/agnes-ai
Stars444
Language—TypeScriptPython
Last pushed2018-06-24——
MaintenanceDormant——
Setup difficultyeasymoderateeasy
Complexity1/53/52/5
Audiencedeveloperdevelopervibe coder

Figures from each repo's GitHub metadata at analysis time.

How do you spin it up?

Difficulty · easy Time to first run · 5min

No setup required, this is an issues-only repository with no code to install or configure.

This repository contains no software code, it is a discussion and planning space for QGIS API changes, so no software license applies.

Wtf does this do

QGIS is a popular open-source mapping application used by geographers, urban planners, and researchers to create and analyze maps. The qgis4.0_api repository is a planning space where the developers of QGIS discuss and track changes they want to make to the software's internal structure for its upcoming version 4.0 release. There is no actual software code in this repository. Instead, it serves as a public bulletin board where developers can file "issues", essentially tickets or discussion threads, about how the application's programming interface should evolve. An API (Application Programming Interface) is the set of rules that lets other software and plugins communicate with QGIS. When developers change that interface, it affects every tool and extension that relies on it, so careful planning is required. The people who would use this space are primarily developers who build plugins or custom tools on top of QGIS, as well as the core team maintaining the application itself. For example, if someone has built a plugin that analyzes flood risk maps, a change to the API in version 4.0 might require them to update their plugin's code. This repository gives those developers a place to see what changes are coming, voice concerns, and participate in the decision-making process before the new version ships. For a non-developer, there isn't much practical use for this repository beyond observing the conversation. It is essentially a behind-the-scenes project management tool, notable mainly because it offers transparency into how a major open-source mapping platform plans its own evolution and ensures that the community has a voice in structural changes that will shape the software's future.

Yoink these prompts

Prompt 1
I maintain a QGIS plugin, search the qgis4.0_api issues and summarize any proposed API changes that could break my plugin, listing the affected methods and suggested migration steps.
Prompt 2
Help me draft a comment on a qgis4.0_api issue proposing that a specific QGIS API method be preserved in version 4.0, including my use case and why removing it would impact my users.
Prompt 3
Create a checklist for auditing my QGIS plugin code against the breaking changes discussed in the qgis4.0_api repository, organized by severity and likelihood of impact.
Prompt 4
Summarize the key themes and decisions from open issues in the qgis4.0_api repo so I can understand what direction the QGIS 4.0 API is heading.

Frequently asked questions

wtf is qgis4.0_api?

A planning and discussion space where QGIS developers track proposed changes to the mapping software's programming interface for the upcoming 4.0 release. Contains no code, only issue threads for community transparency.

Is qgis4.0_api actively maintained?

Dormant — no commits in 2+ years (last push 2018-06-24).

What license does qgis4.0_api use?

This repository contains no software code, it is a discussion and planning space for QGIS API changes, so no software license applies.

How hard is qgis4.0_api to set up?

Setup difficulty is rated easy, with roughly 5min to a first successful run.

Who is qgis4.0_api for?

Mainly developer.

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