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+---
+title: "SPEC 13 — Recommended targets and naming conventions"
+number: 13
+date: 2024-06-05
+author:
+  - "Pamphile Roy <roy.pamphile@gmail.com>"
+  - "Matthias Bussonnier <bussonniermatthias@gmail.com>"
+  - "Jarrod Millman <millman@berkeley.edu>"
+discussion: https://discuss.scientific-python.org/t/spec-13-recommended-targets-and-naming-conventions
+endorsed-by:
+---
+
+## Description
+
+For consistency and decreased cognitive load across the ecosystem, this SPEC
+recommends naming conventions around various project aspects--such as project
+structure, repository layout, folder names, task runner and `pyproject.toml`
+targets name.
+
+From a cursory survey in the Scientific Python ecosystem, we discover some
+frustration from contributors and maintainer when moving from one project to
+another and believe that consistency will make it both easier for existing
+maintainer to contribute to project as well a decrease the confusion of new
+developers when contributing or creating new projects.
+
+There seem to be a strong consensus with preference for `docs` in favor of
+`docs`, and a preference for `tests` in favor of `test`.
+
+We will note though that the _extra_ optional dependencies on PyPI seem to favor
+`test` (present on 7573 packages) vs `tests` (2362 times).
+
+## Implementation
+
+For the tie being we will not pronounce ourselves on the optional extra
+`extra` dependency for `pyproject.toml`.
+
+For other targets and folders we recommend that:
+
+- Targets related to testing be named `tests` (and not `test`). For example
+  `spin tests`, `python dev.py tests`, `nox -s tests`.
+- Folders containing tests be names `tests`.
+- Targets related to documentations be named `docs` (and not `doc`). For example
+  `spin docs`, `make docs`, `tox -s docs`.
+- That the documentation `extra` optional dependency be named `docs` (and not
+  doc), so that docs dependencies can be installed with `pip install .[docs]`
+- Use lowercase.
+
+It is appropriate to have the singular aliases to ease transition, but the
+plurals should always be the default.
+
+## Notes
+
+![Vote from ecosystem maintainers at the 2024 Scientific Python Ecosystem Summit in Seattle](./ecosystem_voting.jpg)