Set up build pipeline

.github/workflows/build.yaml

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+# This is a basic workflow to help you get started with Actions
+
+name: Build font
+
+# Controls when the workflow will run
+on:
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  font-builder:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v4
+
+      - name: Set env ZIP file name
+        id: zip-name
+        shell: bash
+        # Set the archive name to repo name + "-assets" e.g "MavenPro-assets"
+        run: echo "ZIP_NAME=$(echo '${{ github.repository }}' | awk -F '/' '{print $2}')-fonts" >> $GITHUB_ENV
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.10'
+
+      - name: Install dependencies
+        run: |
+          python3 -m pip install --upgrade pip
+          python3 -m pip install gftools
+
+      - name: Build font
+        run: |
+          cd source
+          bash build.sh
+
+      - name: Archive artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: ${{ env.ZIP_NAME }}
+          path: fonts
+
+      - name: Upload font
+        uses: stefanzweifel/git-auto-commit-action@v5
+        with:
+          commit_message: Upload compiled fonts

.gitignore

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+# python virtual environment for installing gftools
+fontenv
+
+# auto generated file by gftools
+source/build.ninja
+source/.ninja_log

source/build.sh

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+rm fonts/*.otf
+node clean-ufo.mjs
+gftools builder source/config.yaml

source/clean-ufo.mjs

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+import { readdirSync, readFileSync, writeFileSync } from "node:fs";
+
+const a = readdirSync("./source/CactusClassicalSerif-Regular.ufo", {
+  withFileTypes: true,
+}).filter((o) => o.isFile());
+const b = readdirSync("./source/CactusClassicalSerif-Regular.ufo/glyphs", {
+  withFileTypes: true,
+}).filter((o) => o.isFile());
+
+for (const file of a) {
+  const path = `${file.path}/${file.name}`;
+  let data = readFileSync(path, "utf-8");
+  if (data.charCodeAt(0) === 0xfeff) {
+    data = data.slice(1);
+    writeFileSync(path, data);
+  }
+}
+
+for (const file of b) {
+  const path = `${file.path}/${file.name}`;
+  let data = readFileSync(path, "utf-8");
+  if (data.charCodeAt(0) === 0xfeff) {
+    data = data.slice(1);
+    writeFileSync(path, data);
+  }
+}
+
+let fontinfo = readFileSync(
+  "./source/CactusClassicalSerif-Regular.ufo/fontinfo.plist",
+  "utf-8"
+);
+
+if (!fontinfo.includes("<key>encodingID</key>")) {
+  fontinfo = fontinfo.replace(
+    new RegExp(`<key>platformID</key>\\n\\s+<integer>3</integer>`),
+    "<key>platformID</key><integer>3</integer><key>encodingID</key><integer>10</integer>"
+  );
+  writeFileSync(
+    "./source/CactusClassicalSerif-Regular.ufo/fontinfo.plist",
+    fontinfo
+  );
+}
+
+let features = readFileSync(
+  "./source/CactusClassicalSerif-Regular.ufo/features.fea",
+  "utf-8"
+);
+
+if (features.includes("@\\BASE")) {
+  features = features.replace(/@\\BASE.*/s, "");
+  writeFileSync(
+    "./source/CactusClassicalSerif-Regular.ufo/features.fea",
+    features
+  );
+}

source/config.yaml

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+sources:
+  - CactusClassicalSerif-Regular.ufo
+familyName: "Cactus Classical Serif"
+removeOutlineOverlaps: false