Init Change Log fragments

.changelog/.markdownlint.yml

@@ -0,0 +1,24 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/DavidAnson/markdownlint/main/schema/markdownlint-config-schema.json
+
+# markdownlint configuration for Change Log fragments.
+
+# For more information, see:
+# https://github.com/DavidAnson/markdownlint#optionsconfig.
+
+# Extend project's main configuration.
+extends: ../.markdownlint.yml
+
+line-length:
+  # Line length checking is not strict by default.
+  strict: true
+  # Change Log fragments will be listed as bullets indented by 2 spaces so they
+  # should be 2 characters shorter than ordinary lines.
+  line_length: 78
+
+# Change Log fragments should not have a heading as the first line.
+first-line-heading: false
+
+ul-style:
+  # Enforce a uniform symbol for unordered lists across all Change Log
+  # fragments.
+  style: dash

.changelog/584.process.md

@@ -0,0 +1,8 @@
+Add Change Log and the Change Log fragments process for assembling it
+
+This follows the same Change Log fragments process as is used by [Oasis Core].
+
+For more details, see [Change Log fragments].
+
+[Oasis Core]: https://github.com/oasisprotocol/oasis-core
+[Change Log fragments]: .changelog/README.md

.changelog/README.md

@@ -0,0 +1,16 @@
+# Change Log Fragments
+
+This directory collects Change Log fragments:
+short files that each contain a snippet of Markdown formatted text that will
+be assembled using [towncrier] to form the [Change Log] section for the next
+release.
+
+This repository follows the same Change Log fragments style as the
+[Oasis Core] repository.
+Please, see [its Change Log fragments documentation] for more details.
+
+[Change Log]: ../CHANGELOG.md
+[towncrier]: https://github.com/oasisprotocol/towncrier
+[Oasis Core]: https://github.com/oasisprotocol/oasis-core
+[its Change Log fragments documentation]:
+  https://github.com/oasisprotocol/oasis-core/blob/master/.changelog/README.md

.changelog/template.md.j2

@@ -0,0 +1,39 @@
+{# This a Jinja2 template for preparing a new section of the Change Log with the towncrier utility.#}
+## {{ versiondata.version }} ({{ versiondata.date }})
+{% for section, _ in sections.items() %}
+
+{% if sections[section] %}
+{% for category, val in definitions.items() if category in sections[section] %}
+{% if definitions[category]['showcontent'] %}
+{{ "### " + definitions[category]['name'] }}
+
+{% for text, values in sections[section][category].items() %}
+{% set lines = text.splitlines() %}
+{% set referenced_issues = "(" + values | join(',\n   ') + ")" %}
+{% if lines | length > 2 and lines[1] == "" %}
+- {{ lines[0] }}
+  {{ referenced_issues }}
+
+{{ lines[2:] | join('\n') }}
+{% else %}
+- {{ text }}
+  {{ referenced_issues }}
+{% endif %}
+{% if not loop.last %}
+
+{% endif %}
+{% endfor %}
+{% endif %}
+{% if sections[section][category]|length == 0 %}
+No significant changes.
+
+{% else %}
+{% endif %}
+
+{% endfor %}
+{% else %}
+No significant changes.
+
+
+{% endif %}
+{% endfor %}

.github/workflows/ci-lint.yaml

@@ -32,6 +32,27 @@ jobs:
         uses: actions/setup-python@v3
         with:
           python-version: '3.x'
+        # Needed for Towncrier fork to work with 3.12 and above
+      - name: Install setuptools
+        run: |
+          python -m pip install setuptools
+      - name: Install towncrier
+        run: |
+          python -m pip install https://github.com/oasisprotocol/towncrier/archive/oasis-master.tar.gz
+      - name: Check for presence of a Change Log fragment (only pull requests)
+        # NOTE: The pull request' base branch needs to be fetched so towncrier
+        # is able to compare the current branch with the base branch.
+        # Source: https://github.com/actions/checkout/#fetch-all-branches.
+        run: |
+          git fetch --no-tags origin +refs/heads/${BASE_BRANCH}:refs/remotes/origin/${BASE_BRANCH}
+          towncrier check --compare-with origin/${BASE_BRANCH}
+        env:
+          BASE_BRANCH: ${{ github.base_ref }}
+      - name: Lint Change Log fragments
+        run: |
+          make lint-changelog
+        # Always run this step so that all linting errors can be seen at once.
+        if: always()
       - name: Set up Go
         uses: actions/setup-go@v3
         with:

.github/workflows/release.yaml

@@ -34,6 +34,11 @@ jobs:
         run: |
           make release-build
         env:
+          # Instruct Make to create a real release.
+          NEXUS_REAL_RELEASE: "true"
+          # Pass automatically created GitHub App installation token to the action.
+          # For more info, see:
+          # https://help.github.com/en/actions/automating-your-workflow-with-github-actions/authenticating-with-the-github_token.
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       # Prepare the tagged Docker image.

.goreleaser.yaml

@@ -29,38 +29,9 @@ checksum:
 snapshot:
   name_template: "{{ incpatch .Version }}-next"
 
-changelog:
-  sort: asc
-  use: github
-  filters:
-    exclude:
-    - Merge pull request
-    - Merge remote-tracking branch
-    - Merge branch
-  groups:
-    - title: Breaking changes
-      regexp: "^.*breaks[(\\w)]*:+.*$"
-      order: 0
-    - title: New Features
-      regexp: "^.*feat[(\\w)]*:+.*$"
-      order: 5
-    - title: Bug fixes
-      regexp: "^.*fix[(\\w)]*:+.*$"
-      order: 10
-    - title: Dependencies updates
-      regexp: "^.*deps[(\\w)]*:+.*$"
-      order: 500
-    - title: Other changes
-      order: 999
-
 release:
   name_template: "{{.ProjectName}} {{.Version}}"
 
   # If set to auto, will mark the release as not ready for production
   # in case there is an indicator for this in the tag e.g. v1.0.0-rc1.
   prerelease: auto
-
-  footer: |
-    **Full Changelog**: https://github.com/oasisprotocol/nexus/compare/{{ .PreviousTag }}...{{ .Tag }}
-    ### Running Nexus in Docker
-    https://github.com/oasisprotocol/nexus/blob/{{ .Tag }}/README.md#docker-development

.markdownlint.yml

@@ -0,0 +1,20 @@
+# yaml-language-server: $schema=https://raw.githubusercontent.com/DavidAnson/markdownlint/main/schema/markdownlint-config-schema.json
+
+# markdownlint configuration.
+
+# For more information, see:
+# https://github.com/DavidAnson/markdownlint#optionsconfig.
+
+# Enable all rules.
+default: true
+
+line-length:
+  # Line length checking is not strict by default.
+  strict: true
+  line_length: 80
+  # Allow longer lines for code blocks.
+  code_block_line_length: 100
+
+# Do not always require language specifiers with fenced code blocks since they
+# are not part of the Markdown spec.
+fenced-code-language: false