chore: Use pdm instead of pipenv.

.github/dependabot.yml

@@ -6,7 +6,7 @@ updates:
     schedule:
       interval: weekly
   - commit-message:
-      prefix: build(requirements)
+      prefix: build(dependencies)
     directory: /
     groups:
       dev:

.github/workflows/ci.yml

@@ -1,19 +1,18 @@
+name: CI
 concurrency:
   cancel-in-progress: true
   group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   ci:
     if: ${{ !cancelled() && ! failure() }}
-    needs: dependabot
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+      - uses: pdm-project/setup-pdm@v3
         with:
-          cache: pip
+          cache: true
           python-version: ${{ matrix.python-version }}
       - run: env | sort
       - run: make dev
@@ -28,18 +27,16 @@ jobs:
           - '3.12'
   consistency:
     if: ${{ !cancelled() && ! failure() }}
-    needs: dependabot
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
       - name: Set up Git
         run: |
           git config --global user.name github-actions
           git config --global user.email [email protected]
-      - name: Set up Python
-        uses: actions/setup-python@v5
+      - uses: pdm-project/setup-pdm@v3
         with:
-          cache: pip
+          cache: true
           python-version: '3.12'
       - run: env | sort
       - name: Install copier for template rendering using pipx
@@ -54,48 +51,6 @@ jobs:
       - run: git diff
       - run: git status --porcelain
       - run: test -z "$(git status --porcelain)"
-  dependabot:
-    if: ${{ github.actor == 'dependabot[bot]' && startsWith(github.head_ref, 'dependabot/pip/') }}
-    permissions:
-      contents: write
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-          ref: ${{ github.head_ref }}
-      - name: Set up Git
-        run: |
-          git config --global user.name github-actions
-          git config --global user.email [email protected]
-      - name: Set up Python with multiple versions.
-        uses: actions/setup-python@v5
-        with:
-          cache: pip
-          python-version: |
-            3.8
-            3.9
-            3.10
-            3.11
-            3.12
-      - name: Install pipenv using pipx
-        run: pipx install pipenv
-      - name: Generate constraints for all supported Python versions
-        run: |
-          CI= PYTHON_VERSION=3.8 make constraints
-          CI= PYTHON_VERSION=3.9 make constraints
-          CI= PYTHON_VERSION=3.10 make constraints
-          CI= PYTHON_VERSION=3.11 make constraints
-          CI= PYTHON_VERSION=3.12 make constraints
-      - name: Sync template
-        run: cp -v constraints/* template/constraints/
-      - name: Push changes if applicable
-        run: |
-          if [[ -n `git status --porcelain` ]]; then
-            git commit -a -m "build: Update constraints for dependabot."
-            git push
-          fi
-name: CI
 on:
   pull_request:
     types:

.github/workflows/pr.yml

@@ -1,3 +1,4 @@
+name: Lint pull request title
 concurrency:
   cancel-in-progress: true
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -12,7 +13,6 @@ jobs:
             echo 'Please refer to "https://www.conventionalcommits.org/"'
             exit 1
           fi
-name: Lint pull request title
 on:
   pull_request:
     types:

.github/workflows/readthedocs-preview.yml

@@ -1,3 +1,4 @@
+name: Read the Docs Pull Request Preview
 concurrency:
   cancel-in-progress: true
   group: ${{ github.workflow }}-${{ github.ref }}
@@ -8,7 +9,6 @@ jobs:
       - uses: readthedocs/actions/preview@v1
         with:
           project-slug: ss-python
-name: Read the Docs Pull Request Preview
 on:
   pull_request_target:
     types:

.github/workflows/release.yml

@@ -1,32 +1,28 @@
+name: Release
 jobs:
   package:
     needs: release
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: Set up Python
-        uses: actions/setup-python@v5
+      - uses: pdm-project/setup-pdm@v3
         with:
-          cache: pip
+          cache: true
           python-version: '3.12'
       - run: env | sort
-      - run: make dev-package
-      - run: make build
       - env:
-          TWINE_NON_INTERACTIVE: true
-          TWINE_PASSWORD: ${{ secrets.TWINE_PASSWORD }}
-          TWINE_USERNAME: ${{ vars.TWINE_USERNAME != '' && vars.TWINE_USERNAME || '__token__' }}
-        run: make upload
+          PDM_PUBLISH_USERNAME: ${{ secrets.PDM_PUBLISH_PASSWORD }}
+          PDM_PUBLISH_USERNAME: ${{ vars.PDM_PUBLISH_USERNAME != '' && vars.PDM_PUBLISH_USERNAME || '__token__' }}
+        run: make publish
   pages-build:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - name: Set up Python
-        uses: actions/setup-python@v5
+      - uses: pdm-project/setup-pdm@v3
         with:
-          cache: pip
+          cache: true
           python-version: '3.12'
       - run: env | sort
       - run: make dev-docs
@@ -81,7 +77,6 @@ jobs:
         with:
           body_path: release-notes.md
           prerelease: ${{ steps.prerelease.outputs.is_prerelease }}
-name: Release
 on:
   push:
     tags:

.gitignore

@@ -2,6 +2,9 @@
 *.swp
 .DS_Store
 .copier-answers.yml
+# TODO: Move `.pdm-python` out of custom section when upstream pull request merged.
+# Reference: https://github.com/github/gitignore/pull/4279
+.pdm-python
 Pipfile
 public
 release-notes.md

.gitlab/ci/release.yml

@@ -19,12 +19,8 @@ package:
     - /^v?(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)\.(0|[1-9][0-9]*)(-?(a|b|rc)(0|[1-9][0-9]*)?)?$/
   script:
     - env | sort
-    - make dev-package
-    - make build
-    - make upload
+    - make publish
   stage: release
-  variables:
-    TWINE_NON_INTERACTIVE: 'true'
 pages:
   artifacts:
     paths:
@@ -48,4 +44,4 @@ release:
     tag_name: $CI_COMMIT_TAG
   script:
     - env | sort
-  stage: release
+  stage: release

.pre-commit-config.yaml

@@ -21,26 +21,14 @@ repos:
       - id: pretty-format-json
         args:
           - '--autofix'
-      - id: requirements-txt-fixer
-        args:
-          - constraints/3.8.txt
-          - constraints/3.9.txt
-          - constraints/3.10.txt
-          - constraints/3.11.txt
-          - constraints/3.12.txt
-          - requirements.txt
-          - requirements/docs.txt
-          - requirements/lint.txt
-          - requirements/package.txt
-          - requirements/test.txt
       - id: sort-simple-yaml
         files: .pre-commit-config.yaml
       - id: trailing-whitespace
   - repo: local
     hooks:
       - id: mypy
         name: mypy
-        entry: pipenv run python -m mypy
+        entry: pdm run python -m mypy
         language: system
         exclude: ^template/.*
         types_or:
@@ -49,23 +37,23 @@ repos:
         require_serial: true
       - id: ruff
         name: ruff
-        entry: pipenv run python -m ruff check --force-exclude
+        entry: pdm run python -m ruff check --force-exclude
         language: system
         types_or:
           - python
           - pyi
         require_serial: true
       - id: ruff-format
         name: ruff-format
-        entry: pipenv run python -m ruff format --force-exclude
+        entry: pdm run python -m ruff format --force-exclude
         language: system
         types_or:
           - python
           - pyi
         require_serial: true
       - id: toml-sort
         name: toml-sort
-        entry: pipenv run toml-sort
+        entry: pdm run toml-sort
         language: system
         types:
           - toml