Add basic structure.

docs/source/development/eep-02-typing.md

@@ -0,0 +1,63 @@
+(eeppytrees)=
+
+# EEP-01: Static typing
+
+```{eval-rst}
++------------+------------------------------------------------------------------+
+| Author     | `Janos Gabler <https://github.com/janosg>`_                      |
++------------+------------------------------------------------------------------+
+| Status     | Draft                                                            |
++------------+------------------------------------------------------------------+
+| Type       | Standards Track                                                  |
++------------+------------------------------------------------------------------+
+| Created    | 2024-05-02                                                       |
++------------+------------------------------------------------------------------+
+| Resolution |                                                                  |
++------------+------------------------------------------------------------------+
+```
+
+## Abstract
+
+This enhancement proposal explains how we want to adopt static typing in estimagic. The
+overarching goals of the proposal are the folloing:
+
+- More robust code due to static type checking
+- Better readability of code due to type hints
+- Better discoverability and autocomplete for users of estimagic
+
+Achieving these goals requires more than adding type hints. Estimagic is currently
+mostly [stringly typed](https://wiki.c2.com/?StringlyTyped) and full of dictionaries
+with a fixed set of required keys (e.g.
+[constraints](https://estimagic.readthedocs.io/en/latest/how_to_guides/optimization/how_to_specify_constraints.html),
+[option dictionaries](https://estimagic.readthedocs.io/en/latest/how_to_guides/optimization/how_to_specify_algorithm_and_algo_options.html),
+etc.).
+
+This enhancement proposal outlines how we can accomodate the changes needed to reap the
+benefits of static typing without breaking users' code.
+
+## Motivation and ressources
+
+## Changes in public functions
+
+### Constraints
+
+### Option dictionaries
+
+### Algorithm selection
+
+### Benchmark problems and results
+
+### Least-squares and likelihood problems
+
+## Internal changes
+
+### Internal algorithm interface
+
+## Changes in documentation
+
+- No type hints in docstrings anymore
+- Only show new recommended ways of doing things, not deprecated ones
+
+## Breaking changes
+
+## Deprecations

docs/source/development/eeps.md

@@ -12,4 +12,5 @@ maxdepth: 1
 ---
 eep-00-governance-model.md
 eep-01-pytrees.md
+eep-02-typing.md
 ```