install opensans differently

.github/workflows/ci.yml

@@ -29,12 +29,14 @@ jobs:
           sudo cp -r core-sans-a-fonts/* /usr/local/share/fonts/
           sudo fc-cache -f -v
           fc-list | grep "Core Sans"
-      - name: Use Fallback find for fork PRs
+      - name: Use Fallback font for fork PRs
         if: "github.event.pull_request.head.repo.fork"
         run: |
-          sed -i 's/CoreSansA45.ttf/OpenSans-Regular.ttf/g' book/book.toml
-          sed -i 's/CoreSansA45It.ttf/OpenSans-Italic.ttf/g' book/book.toml
-          sed -i 's/CoreSansA65It.ttf/OpenSans-BoldItalic.ttf/g' book/book.toml
+          sed -i 's/CoreSansA45.ttf/Open Sans:style=Regular/g' book/book.toml
+          sed -i 's/CoreSansA45It.ttf/Open Sans:style=Italic/g' book/book.toml
+          sed -i 's/CoreSansA65.ttf/Open Sans:style=Bold/g' book/book.toml
+          sed -i 's/CoreSansA65It.ttf/Open Sans:style=Bold Italic/g' book/book.toml
+          cat book/book.toml
       - uses: actions-rust-lang/setup-rust-toolchain@v1
       - name: Install exercise plugin
         run: cargo install --path helpers/mdbook-exercise-linker
@@ -45,7 +47,7 @@ jobs:
           cargo install mdbook-pandoc --locked --version 0.7.1
           sudo apt-get update
           sudo apt-get install -y fonts-noto fonts-open-sans calibre pdftk
-          
+          sudo fc-cache -f -v
           export PANDOC_VERSION=3.3
           curl -LsSf https://github.com/jgm/pandoc/releases/download/${PANDOC_VERSION}/pandoc-${PANDOC_VERSION}-linux-amd64.tar.gz | tar zxf -
           echo "$PWD/pandoc-${PANDOC_VERSION}/bin" >> $GITHUB_PATH

book/book.toml

@@ -28,6 +28,7 @@ show-hidden-lines = true
 [output.pandoc.profile.pdf] # options to pass to Pandoc (see https://pandoc.org/MANUAL.html)
 output-file = "100-exercises-to-learn-rust.pdf"
 to = "latex"
+verbosity = "INFO"
 highlight-style = "./custom.theme"
 # We use `lualatext` because, right now, it's the only engine
 # that supports fallback fonts, which we need for emojis.