diff --git a/.ci_support/migrations/numpy2.yaml b/.ci_support/migrations/numpy2.yaml new file mode 100644 index 00000000..b2194cab --- /dev/null +++ b/.ci_support/migrations/numpy2.yaml @@ -0,0 +1,74 @@ +__migrator: + build_number: 1 + kind: version + commit_message: | + Rebuild for numpy 2.0 + + TL;DR: The way we build against numpy has changed as of numpy 2.0. This bot + PR has updated the recipe to account for the changes (see below for details). + The numpy 2.0 package itself is currently only available from a special release + channel (`conda-forge/label/numpy_rc`) and will not be available on the main + `conda-forge` channel until the release of numpy 2.0 GA. + + The biggest change is that we no longer need to use the oldest available numpy + version at build time in order to support old numpy version at runtime - numpy + will by default use a compatible ABI for the oldest still-supported numpy versions. + + Additionally, we no longer need to use `{{ pin_compatible("numpy") }}` as a + run requirement - this has been handled for more than two years now by a + run-export on the numpy package itself. The migrator will therefore remove + any occurrences of this. + + However, by default, building against numpy 2.0 will assume that the package + is compatible with numpy 2.0, which is not necessarily the case. You should + check that the upstream package explicitly supports numpy 2.0, otherwise you + need to add a `- numpy <2` run requirement until that happens (check numpy + issue 26191 for an overview of the most important packages). + + Note that the numpy release candidate promises to be ABI-compatible with the + final 2.0 release. This means that building against 2.0.0rc1 produces packages + that can be published to our main channels. + + If you already want to use the numpy 2.0 release candidate yourself, you can do + ``` + conda config --add channels conda-forge/label/numpy_rc + ``` + or add this channel to your `.condarc` file directly. + + ### To-Dos: + * [ ] Match run-requirements for numpy (i.e. check upstream `pyproject.toml` or however the project specifies numpy compatibility) + * If upstream is not yet compatible with numpy 2.0, add `numpy <2` upper bound under `run:`. + * If upstream is already compatible with numpy 2.0, nothing else should be necessary in most cases. + * If upstream requires a minimum numpy version newer than 1.19, you can add `numpy >=x.y` under `run:`. + * [ ] Remove any remaining occurrences of `{{ pin_compatible("numpy") }}` that the bot may have missed. + + PS. If the build does not compile anymore, this is almost certainly a sign that + the upstream project is not yet ready for numpy 2.0; do not close this PR until + a version compatible with numpy 2.0 has been released upstream and on this + feedstock (in the meantime, you can keep the bot from reopening this PR in + case of git conflicts by marking it as a draft). + + migration_number: 1 + exclude: + # needs local overrides that get stomped on by the migrator, which then fails + - scipy + # already done, but thinks its unsolvable + - pandas + ordering: + # prefer channels including numpy_rc (otherwise smithy doesn't + # know which of the two values should be taken on merge) + channel_sources: + - conda-forge + - conda-forge/label/numpy_rc,conda-forge + +# needs to match length of zip {python, python_impl, numpy} +# as it is in global CBC in order to override it +numpy: + - 1.22 # no py38 support for numpy 2.0 + - 2.0 + - 2.0 + - 2.0 + - 2.0 +channel_sources: + - conda-forge/label/numpy_rc,conda-forge +migrator_ts: 1713572489.295986 \ No newline at end of file