126 lines
4.6 KiB
YAML
126 lines
4.6 KiB
YAML
uuid:
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- value: 7210b16f-71c2-44c4-9dc1-4264b243c618
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revision_timestamp:
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- value: '2025-05-11T08:59:58+00:00'
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target_uuid: b8966985-d4b2-42a7-a319-2e94ccfbb849
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title:
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- value: 'Chaining tools for maximum benefit'
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created:
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- value: '2025-04-08T00:00:00+00:00'
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changed:
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- value: '2025-05-11T08:59:58+00:00'
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path:
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- alias: /daily/2025/04/08/chaining
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langcode: en
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body:
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- value: |
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<p>Yesterday I showed <a href="/daily/2025/04/07/nix-rst2pdf">how I'm using Nix to build my presentation slide decks</a> with rst2pdf.</p>
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<p>This allows me to run a simple command like <code>nix build .#test-driven-drupal</code> to build the slides for the given presentation.</p>
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<p>But I can use other tools to make this even easier.</p>
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<p>What if I wanted to have a list of the available presentations to select from, and selecting one would build it?</p>
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<p>Following the UNIX philosophy, I can use multiple tools together to achieve this.</p>
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<p>Firstly, I can run <code>nix flake show --json</code> to show the output from my flake.nix file, which looks something like this:</p>
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<pre><code class="json">{
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"devShells": { ... },
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"formatter": { ... },
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"packages": {
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"x86_64-linux": {
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"build-configs": { ... },
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"sculpin": { ... },
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"shared": { ... }
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}
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}
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}
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</code></pre>
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<p>The package names - a.k.a. the presentation names - are what I want to select from.</p>
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<p>I can parse the JSON object with <code>jq</code>, remove any unwanted options with <code>grep -v</code> and use <code>fzf</code> to give me a list I can fuzzy search in.</p>
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<p>In a Bash script, I can assign this to a variable:</p>
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<pre><code class="bash">selected=$(nix flake show --json | jq --raw-output '.packages["x86_64-linux"] | keys[]' | grep -v shared | fzf)
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</code></pre>
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<p>Once I have selected a name, I can call <code>nix build</code> on it.</p>
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<pre><code class="bash">nix build .#"$selected"
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</code></pre>
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<p>This is a simple example, but it shows how programs can be used together and output can be passed through each program to get the result you want.</p>
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format: full_html
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processed: |
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<p>Yesterday I showed <a href="http://default/daily/2025/04/07/nix-rst2pdf">how I'm using Nix to build my presentation slide decks</a> with rst2pdf.</p>
|
|
|
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<p>This allows me to run a simple command like <code>nix build .#test-driven-drupal</code> to build the slides for the given presentation.</p>
|
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|
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<p>But I can use other tools to make this even easier.</p>
|
|
|
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<p>What if I wanted to have a list of the available presentations to select from, and selecting one would build it?</p>
|
|
|
|
<p>Following the UNIX philosophy, I can use multiple tools together to achieve this.</p>
|
|
|
|
<p>Firstly, I can run <code>nix flake show --json</code> to show the output from my flake.nix file, which looks something like this:</p>
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<pre><code class="json">{
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"devShells": { ... },
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"formatter": { ... },
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"packages": {
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"x86_64-linux": {
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"build-configs": { ... },
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"sculpin": { ... },
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"shared": { ... }
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}
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}
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}
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</code></pre>
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<p>The package names - a.k.a. the presentation names - are what I want to select from.</p>
|
|
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<p>I can parse the JSON object with <code>jq</code>, remove any unwanted options with <code>grep -v</code> and use <code>fzf</code> to give me a list I can fuzzy search in.</p>
|
|
|
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<p>In a Bash script, I can assign this to a variable:</p>
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<pre><code class="bash">selected=$(nix flake show --json | jq --raw-output '.packages["x86_64-linux"] | keys[]' | grep -v shared | fzf)
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</code></pre>
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<p>Once I have selected a name, I can call <code>nix build</code> on it.</p>
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<pre><code class="bash">nix build .#"$selected"
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</code></pre>
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<p>This is a simple example, but it shows how programs can be used together and output can be passed through each program to get the result you want.</p>
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summary: null
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field_daily_email_cta: { }
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