[pgrouting-dev] Version numbering suggestion

[Paragon Corporation]

> Maybe you can explain the versioning that postgis uses and what events you
use to change version numbers.

> For us, develop is always the NEXT major in development release branch and
develop_X_X_X is a minor development bugfix release branch. And master is
the current stable tagged release.

> I'm not opposed to changing this to make it easier for others to work with
us. This is just what I thought other projects were doing and seemed to be a
logical and simple to follow process.

> Input is always welcome.

PostGIS is still on svn for core -- though we have a github mirror which
more or less follows our svn pattern

For us the trunk (marked svn-trunk and the default branch) is our
development branch -- so that would be what will become 2.2.0 and has
version 2.2.0dev to reflect its still in development

For each stable branch we have a branch -- 2.0 (which is version 2.0.7dev),
2.1 (which is versioned 2.1.6dev

Then for releases we have tags - 2.0.6, 2.1.5, etc.


When we start a new minor (has new functions and can be upgraded with an
in-place upgrade) - which happens as soon as we release the last minor, we
tag our current master (trunk), then create a new stable branch, and then
bump the master to new version.

So for example when we released 2.0.0

We created a tag of current master (svn-trunk) as 2.0.0, created a new
branch (2.0) from master (this was tagged as 2.0.1SVN (legacy reasons new
convention is to add dev at end) ), and then changed master to 2.1.0dev

This happened again when we went from 2.0 to 2.1 (as you can see in our
branches and tags here -- https://github.com/postgis/postgis ) so our
svn-trunk became 2.2.0dev

 
So in a nutshell, we never have two branches (or tags) that have the same
version number.  By version number, I'm talking about when you install
PostGIS / pgRouting

With 

CREATE EXTENSION postgis;
CREATE EXTENSION pgrouting;

What you see when you run:
SELECT postgis_full_version();
SELECT * FROM pgr_version();

As well as what you see for version when you run

SELECT name, default_version,installed_version 
FROM pg_available_extensions 
WHERE name IN('postgis', 'pgrouting');


Thanks,
Regina