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  - value: '2025-04-16T00:00:00+00:00'
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      <p>I recently started <a href="/daily/2025/04/07/nix-rst2pdf">using Nix to build my PDF presentation slides</a> that <a href="/presentations/building-presenting-slide-decks-rst2pdf">I create with rst2pdf</a>.</p>

      <p>I removed the custom build script that was generating the PDF files and moved that code into a Nix derivation.</p>

      <p>Now I can run <code>nix build .#test-driven-drupal</code> and it will generate the slides for that talk.</p>

      <p>As well as the files specific to each presentation, I also have a derivation for shared assets that apply to all talks - i.e. the stylesheets and fonts that are embedded within the PDF.</p>

      <p>The font files were stored in the repository but I wanted to remove them and use the font files available in nixpkgs.</p>

      <p>After some small changes, <a href="https://code.oliverdavies.uk/opdavies/talks/commit/e24d2df83f04e492151b1a1f4901490ce76ffd45">I was able to do it</a> and remove the font files from my repository.</p>

      <p>The Inter font is available in nixpkgs, but it downloads an <code>InterVariable.ttf</code> font that rst2pdf didn't know how to change the font weight for, so I made my own derivation of the static Inter font based on the releases from GitHub.</p>

      <p>I'm happy that I was able to achieve this, as my repository is leaner and I'm continuing to find new and interesting uses for Nix in my workflows.</p>

              
    format: full_html
    processed: |
      <p>I recently started <a href="http://default/daily/2025/04/07/nix-rst2pdf">using Nix to build my PDF presentation slides</a> that <a href="http://default/presentations/building-presenting-slide-decks-rst2pdf">I create with rst2pdf</a>.</p>

      <p>I removed the custom build script that was generating the PDF files and moved that code into a Nix derivation.</p>

      <p>Now I can run <code>nix build .#test-driven-drupal</code> and it will generate the slides for that talk.</p>

      <p>As well as the files specific to each presentation, I also have a derivation for shared assets that apply to all talks - i.e. the stylesheets and fonts that are embedded within the PDF.</p>

      <p>The font files were stored in the repository but I wanted to remove them and use the font files available in nixpkgs.</p>

      <p>After some small changes, <a href="https://code.oliverdavies.uk/opdavies/talks/commit/e24d2df83f04e492151b1a1f4901490ce76ffd45">I was able to do it</a> and remove the font files from my repository.</p>

      <p>The Inter font is available in nixpkgs, but it downloads an <code>InterVariable.ttf</code> font that rst2pdf didn't know how to change the font weight for, so I made my own derivation of the static Inter font based on the releases from GitHub.</p>

      <p>I'm happy that I was able to achieve this, as my repository is leaner and I'm continuing to find new and interesting uses for Nix in my workflows.</p>

              
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