mirror of
https://mau.dev/maunium/synapse.git
synced 2024-11-14 22:11:47 +01:00
53 lines
No EOL
2.5 KiB
Markdown
53 lines
No EOL
2.5 KiB
Markdown
Deprecation Policy for Platform Dependencies
|
|
============================================
|
|
|
|
Synapse has a number of platform dependencies, including Python, Rust,
|
|
PostgreSQL and SQLite. This document outlines the policy towards which versions
|
|
we support, and when we drop support for versions in the future.
|
|
|
|
|
|
Policy
|
|
------
|
|
|
|
Synapse follows the upstream support life cycles for Python and PostgreSQL,
|
|
i.e. when a version reaches End of Life Synapse will withdraw support for that
|
|
version in future releases.
|
|
|
|
Details on the upstream support life cycles for Python and PostgreSQL are
|
|
documented at [https://endoflife.date/python](https://endoflife.date/python) and
|
|
[https://endoflife.date/postgresql](https://endoflife.date/postgresql).
|
|
|
|
A Rust compiler is required to build Synapse from source. For any given release
|
|
the minimum required version may be bumped up to a recent Rust version, and so
|
|
people building from source should ensure they can fetch recent versions of Rust
|
|
(e.g. by using [rustup](https://rustup.rs/)).
|
|
|
|
The oldest supported version of SQLite is the version
|
|
[provided](https://packages.debian.org/bullseye/libsqlite3-0) by
|
|
[Debian oldstable](https://wiki.debian.org/DebianOldStable).
|
|
|
|
Context
|
|
-------
|
|
|
|
It is important for system admins to have a clear understanding of the platform
|
|
requirements of Synapse and its deprecation policies so that they can
|
|
effectively plan upgrading their infrastructure ahead of time. This is
|
|
especially important in contexts where upgrading the infrastructure requires
|
|
auditing and approval from a security team, or where otherwise upgrading is a
|
|
long process.
|
|
|
|
By following the upstream support life cycles Synapse can ensure that its
|
|
dependencies continue to get security patches, while not requiring system admins
|
|
to constantly update their platform dependencies to the latest versions.
|
|
|
|
For Rust, the situation is a bit different given that a) the Rust foundation
|
|
does not generally support older Rust versions, and b) the library ecosystem
|
|
generally bump their minimum support Rust versions frequently. In general, the
|
|
Synapse team will try to avoid updating the dependency on Rust to the absolute
|
|
latest version, but introducing a formal policy is hard given the constraints of
|
|
the ecosystem.
|
|
|
|
On a similar note, SQLite does not generally have a concept of "supported
|
|
release"; bugfixes are published for the latest minor release only. We chose to
|
|
track Debian's oldstable as this is relatively conservative, predictably updated
|
|
and is consistent with the `.deb` packages released by Matrix.org. |