How to install jj
Jj is developer utility. What follows is background, not a walkthrough. The authoritative version always lives with the project's own team.
How it gets there
Expect differences between platforms. The same project may reach one system through a package index and another through a source build.
Who is behind it
Ownership sits with the project's own contributors. Release cadence, supported platforms and documentation are all decided by them, and none of it is mediated here.
Prior checks
Start from the support matrix. It narrows over time, and assumptions made years ago often no longer hold.
Reading the outcome
Most unexpected behaviour traces back to resolution rather than to the project. An older copy sitting earlier in the path, or a version manager pointing somewhere else, will do it every time.
Scope of this site
Only text is published from this domain. Each project remains exactly where its authors put it.
Where things commonly go wrong
The most frequent surprise is a version that resolves somewhere unexpected. Check which copy is actually being picked up before assuming the project itself misbehaves.