As we have run into issues testing Daffodil 3.11.0 it has become clear that we
need to release an update to the Daffodil SBT Plugin that can support Daffodil
3.11.0.
The major change in v1.4.0 will be the support of Daffodil 3.11.0 and therefore
Scala 2.13. This has a significant impact on Daffodil plugins/layers and the
DFDL schema projects that use them.
There are a couple caveats with how this update handles Daffodil 3.11.0 and
prior versions:
For Daffodil 3.11.0:
- All Scala based plugins, layers and test code using Daffodil SBT needs to be
compatible with Scala 2.13
- daffodilPackageBinVersions must only contain "3.11.0". Attempting to do
something like daffodilPackageBinVersions := Seq("3.10.0", "3.11.0") is not
supported and will likely fail
For prior versions of Daffodil (<= 3.10.0)
- All Scala based plugins, layers and test code using Daffodil SBT needs to be
compatible with Scala 2.12
- daffodilPackageBinVersions must not contain "3.11.0".
daffodilPackageBinVersions := Seq("3.10.0", "3.9.0", "3.8.0", ...) is
supported, but cannot include 3.11.0
When developing a schema that targets "3.11.0" AND prior versions, it is
recommended to use separate branches for 3.11.0 and prior versions of Daffodil
with the above changes in configuration.
In my experience it is usually possible to make Scala based plugin, layer and
test code cross compatible between Scala 2.12 and 2.13 with some small changes.
Once the Scala code is cross compatible, the only manual changes needed to
target different versions of Daffodil using Daffodil SBT v1.4.0 are as follows:
Daffodil 3.11.0:
- No special configuration required. Daffodil SBT should default to Daffodil
3.11.0
Daffodil <= 3.10.0:
- Manually set daffodilVersion := "3.xx.0" and daffodilPackageBinVersions :=
Seq("3.10.0", "3.9.0", ...)
Other than the changes to support Daffodil 3.11.0 there have been some minor
release workflow changes to Daffodil SBT and there are a handful of minor
dependency updates that should be reviewed and merged before release.
Are there any other changes that anyone would like to see in Daffodil SBT
v1.4.0? If not, I will volunteer to be the release manager of Daffodil SBT
v1.4.0 and will begin the release process once the merge requests have been
reviewed and merged.
Josh Adams
