DX: implement developer infrastructure

.pre-commit-config.yml

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+repos:
+  - repo: meta
+    hooks:
+      - id: check-hooks-apply
+      - id: check-useless-excludes
+
+  - repo: https://github.com/kynan/nbstripout
+    rev: 0.7.1
+    hooks:
+      - id: nbstripout
+        args:
+          - --extra-keys
+          - |
+            cell.attachments
+            cell.metadata.code_folding
+            cell.metadata.id
+            cell.metadata.pycharm
+            cell.metadata.user_expressions
+            metadata.celltoolbar
+            metadata.colab.name
+            metadata.colab.provenance
+            metadata.interpreter
+            metadata.notify_time
+            metadata.toc
+            metadata.toc-autonumbering
+            metadata.toc-showcode
+            metadata.toc-showmarkdowntxt
+            metadata.toc-showtags
+            metadata.varInspector
+            metadata.vscode
+
+  - repo: https://github.com/ComPWA/policy
+    rev: 0.3.5
+    hooks:
+      - id: check-dev-files
+        args:
+          - --dev-python-version=3.10
+          - --no-github-actions
+          - --no-gitpod
+          - --no-prettierrc
+          - --no-pypi
+          - --no-version-branches
+          - --pin-requirements=monthly
+          - --repo-name=K-matrix-research
+      - id: fix-nbformat-version
+
+  - repo: https://github.com/astral-sh/ruff-pre-commit
+    rev: v0.3.5
+    hooks:
+      - id: ruff
+        args: [--fix]
+        types_or: [python, pyi, jupyter]
+      - id: ruff-format
+        types_or: [python, pyi, jupyter]
+
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.6.0
+    hooks:
+      - id: check-ast
+      - id: check-case-conflict
+      - id: check-docstring-first
+      - id: check-json
+      - id: check-merge-conflict
+      - id: check-toml
+      - id: check-vcs-permalinks
+      - id: check-yaml
+      - id: debug-statements
+      - id: end-of-file-fixer
+        exclude: >
+          (?x)^(
+            .*\.bib
+          )$
+      - id: mixed-line-ending
+      - id: trailing-whitespace
+
+  - repo: https://github.com/pre-commit/mirrors-prettier
+    rev: v4.0.0-alpha.8
+    hooks:
+      - id: prettier
+
+  - repo: https://github.com/ComPWA/mirrors-taplo
+    rev: v0.8.1
+    hooks:
+      - id: taplo
+
+  - repo: https://github.com/pappasam/toml-sort
+    rev: v0.23.1
+    hooks:
+      - id: toml-sort
+        args:
+          - --in-place
+
+  - repo: https://github.com/editorconfig-checker/editorconfig-checker.python
+    rev: 2.7.3
+    hooks:
+      - id: editorconfig-checker
+        name: editorconfig
+        alias: ec
+        exclude: >-
+          (?x)^(
+            .*\.py
+          )$

README.md

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+

enviroment.yml

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+name: kmatrix
+dependencies:
+  - python==3.10.*
+  - pip
+  - graphviz
+  - pip:
+      - -c .constraints/py3.10.txt -e .[dev]
+variables:
+  PRETTIER_LEGACY_CLI: 1
+  PYDEVD_DISABLE_FILE_VALIDATION: 1
+  PYTHONHASHSEED: 0