ci: Fix/improve update requirements workflow

- Set up Python 3.7 and 3.8
- Add workflow dispatch event to trigger the update
- Add IRC notification

.github/workflows/recompile-requirements.yml

@@ -5,6 +5,12 @@ on:
     # Every Monday at 04:05 UTC
     # https://crontab.guru/#05_04_*_*_1
     - cron: '05 04 * * 1'
+  workflow_dispatch:
+    inputs:
+      environment:
+        descriptions: 'Test environments to update'
+        required: false
+        default: ''
 
 jobs:
   update:
@@ -13,11 +19,16 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-python@v2
+      - name: Set up Python 3.7
+        uses: actions/setup-python@v2
         with:
-          python-version: '3.x'
+          python-version: '3.7'
+      - name: Set up Python 3.8
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.8'
       - name: Recompile requirements
-        run: python3 scripts/dev/recompile_requirements.py
+        run: "python3 scripts/dev/recompile_requirements.py ${{ github.events.input.environments }}"
         id: requirements
       - name: Create pull request
         uses: peter-evans/create-pull-request@v2
@@ -41,3 +52,27 @@ jobs:
             I'm a bot, bleep, bloop. :robot:
 
           branch: update-dependencies
+  irc:
+    timeout-minutes: 2
+    continue-on-error: true
+    runs-on: ubuntu-latest
+    needs: [update]
+    if: "always() && github.repository == 'qutebrowser/qutebrowser'"
+    steps:
+    - name: Send success IRC notification
+      uses: Gottox/irc-message-action@v1
+      if: "needs.update.result == 'success'"
+      with:
+        server: chat.freenode.net
+        channel: '#qutebrowser-dev'
+        nickname: qutebrowser-bot
+        message: "[${{ github.workflow }}] \u00033Success:\u0003 ${{ github.ref }} https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }} (@${{ github.actor }})"
+    - name: Send non-success IRC notification
+      uses: Gottox/irc-message-action@v1
+      if: "needs.update.result != 'success'"
+      with:
+        server: chat.freenode.net
+        channel: '#qutebrowser-dev'
+        nickname: qutebrowser-bot
+        message: "[${{ github.workflow }}] \u00034FAIL:\u0003 ${{ github.ref }} https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }} (@${{ github.actor }})\n
+          linters: ${{ needs.linters.result }}, tests: ${{ needs.tests.result }}, tests-docker: ${{ needs.tests-docker.result }}, codeql: ${{ needs.codeql.result }}"