Tags are now a top-level frontmatter variable

_posts/2014-08-12-first-experience-with-rust.md

@@ -5,8 +5,8 @@ published_date: "2014-08-12 13:25:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 ------
 

_posts/2014-10-15-a-rust-library-for-liblzf.md

@@ -5,8 +5,8 @@ published_date: "2014-10-15 11:10:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 In the last four months I did not produce much open-source code. I was busy writing my Bachelor Thesis.
 But I was active in the community, I attended several conferences, I read a lot of stuff and I wrote down a lot more things to do.

_posts/2014-12-03-a-story-of-hacking-or-rust-on-the-psp.md

@@ -5,8 +5,8 @@ published_date: "2014-12-03 20:03:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 ------
 

_posts/2015-01-15-rdb-rs-fast-and-efficient-rdb-parsing-utility.md

@@ -5,8 +5,8 @@ published_date: "2015-01-15 23:50:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 Ever since I started looking into [Rust][] I knew I needed a bigger project for which I could use it.
 I released a [few][lzf] [small][crc] [libraries][redlock], all based on Redis code/tools, so I figured:

_posts/2015-03-05-the-difference-of-rust-s-spawn-and-scoped.md

@@ -5,8 +5,8 @@ published_date: "2015-03-05 14:41:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 So yesterday I gave a Rust introduction talk at the local hackerspace, [CCCAC](http://ccc.ac).
 The slides are already [online](https://fnordig.de/talks/2015/cccac/rust-intro/).

_posts/2015-07-15-omnomnom-parsing-iso8601-dates-using-nom.md

@@ -5,8 +5,8 @@ published_date: "2015-07-16 11:00:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 
 **Update 2018-07-01:** This article was updated in 2018 and is [now available as documentation in the iso8601 repository](https://github.com/badboy/iso8601/blob/338b3d1a9ca220372292f631a3bc2e5176cca331/docs/parsing-iso8601-dates-using-nom.md).

_posts/2016-02-23-create-releases-using-hubcaps-a-rust-library.md

@@ -5,8 +5,8 @@ published_date: "2016-02-23 20:32:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 For one of my projects I need to access the GitHub API to create releases.
 Luckily, through reading [This Week in Rust #119][twir], I discovered [Hubcaps][], a library for interfacing with GitHub.

_posts/2016-03-04-load-your-config-into-your-environment.md

@@ -5,8 +5,8 @@ published_date: "2016-03-04 12:30:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 It became quite popular to store certain configuration variables in your environment, to be later loaded by your aplication.
 This way of [having all configuration][config] available is part of the [twelve-factor app definition][12factor].

_posts/2016-03-29-releasing-rust-projects-the-automatic-way.md

@@ -4,8 +4,8 @@ title: "Releasing Rust projects, the automatic way"
 published_date: "2016-03-29 20:47:00 +0200"
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 One of the strength of the Rust ecosystem is its package manager [Cargo][] and the package system [crates.io][].
 Pulling in some dependencies is as easy as adding it to your projects' `Cargo.toml` and running `cargo build`.

_posts/2016-05-12-quickcheck-does-your-code-work.md

@@ -5,8 +5,8 @@ published_date: "2016-05-12 23:00:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 … because mine didn't. At least not correctly in all cases.
 I'm talking about my Rust library [lzf-rs](https://crates.io/crates/lzf),

_posts/2016-08-31-rust-from-the-back-to-the-front.md

@@ -5,8 +5,8 @@ published_date: "2016-08-31 16:30:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 
 <center>

_posts/2016-09-28-signify-ed25519-signatures-for-your-files.md

@@ -5,8 +5,8 @@ published_date: "2016-09-28 13:16:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 From time to time I try to write a piece of code or port some existing library or application just for fun.
 So a while back in June I had some free time again and I came across [signify][].

_posts/2016-11-29-novemb-rs-code-sprint-weekend-2016-retrospective.md

@@ -5,8 +5,8 @@ published_date: "2016-11-29 11:55:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 *This post is a tiny bit late, but better late than never.*
 

_posts/2017-11-18-hello-rust-hello-webassembly.md

@@ -5,8 +5,8 @@ published_date: "2017-11-18 16:26:57 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 [hellorust.com](https://www.hellorust.com/) is live!
 

_posts/2018-01-10-retrospective-rust-cologne-in-january.md

@@ -5,8 +5,8 @@ published_date: "2018-01-10 12:25:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 
 Last monday, 8th of January, we had the first [Rust Cologne](http://rust.cologne) meetup this year.

_posts/2018-02-07-d-oh-dns-over-https-in-rust.md

@@ -5,8 +5,8 @@ published_date: "2018-02-07 09:05:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 
 Last weekend I met [Daniel Stenberg][bagder], author of curl, at FOSDEM and we talked a bit about curl, Firefox and also Rust.

_posts/2018-02-09-doh-everything.md

@@ -5,8 +5,8 @@ published_date: "2018-02-09 14:52:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 
 Two days ago [I wrote about a new small utility crate](/2018/02/07/d-oh-dns-over-https-in-rust/) for doing DNS over HTTPS.

_posts/2018-02-18-a-new-job.md

@@ -5,8 +5,8 @@ published_date: "2018-02-18 16:00:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
 ---
 
 In September 2012 I was hired by [rrbone](https://www.rrbone.net/) to work as a software developer alongside my studies.

_posts/2018-08-08-ideas-for-rust-meetups.md

@@ -5,8 +5,8 @@ published_date: "2018-08-08 12:45:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 
 Not every meetup follows the same structure. Not every meetup needs to have 75+ attendees.

_posts/2018-09-30-how-i-made-a-useless-tool-and-the-reactions-made-my-sunday-better.md

@@ -5,9 +5,9 @@ published_date: "2018-09-30 23:00:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
-    - rust
+  - rust
 ---
 
 Last night I had an idea, which made me stay up two hours longer than I wanted.

_posts/2018-11-07-mozfest-2018-an-inside-perspective.md

@@ -5,8 +5,8 @@ published_date: "2018-11-07 14:34:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
 ---
 
 It was the first time for me to attend MozFest, after I heard only good things about it from last year.

_posts/2018-11-28-what-rust-is-it.md

@@ -5,9 +5,9 @@ published_date: "2018-11-28 20:09:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
-    - rust
+  - rust
 ---
 
 A while ago (sometime in August) I built a small service called [What Rust is it?](http://www.whatrustisit.com/).

_posts/2019-01-22-multi-store-custom-telemetry-with-shared-data.md

@@ -5,8 +5,8 @@ published_date: "2019-01-22 10:00:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
 ---
 
 Last year I implemented a new feature for Firefox Telemetry that changes how we can collect and analyze data with different requirements in regard to user privacy & frequency.

_posts/2019-03-01-one-year-moziversary.md

@@ -5,8 +5,8 @@ published_date: "2019-03-01 12:00:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
 ---
 
 At this day last year I walked into the [Mozilla Berlin](https://blog.mozilla.org/berlin/) office to start my first day of work.

_posts/2019-05-15-rust-4-years-later.md

@@ -5,8 +5,8 @@ published_date: "2019-05-15 14:00:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 
 Exactly 4 years ago, on May 15th 2015, the Rust Core Team [announced the first stable version, Version 1.0](https://blog.rust-lang.org/2015/05/15/Rust-1.0.html), of the Rust Programming language.

_posts/2019-10-24-this-week-in-glean.md

@@ -5,9 +5,9 @@ published_date: "2019-10-24 17:30:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
-    - rust
+  - rust
 ---
 
 (“This Week in Glean” is a series of blog posts that the Glean Team at Mozilla is using to try to communicate better about our work. They could be release notes, documentation, hopes, dreams, or whatever: so long as it is inspired by Glean.)

_posts/2019-11-29-this-week-in-glean.md

@@ -5,8 +5,8 @@ published_date: "2019-11-29 11:37:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
 ---
 
 (“This Week in Glean” is a series of blog posts that the Glean Team at Mozilla is using to try to communicate better about our work. They could be release notes, documentation, hopes, dreams, or whatever: so long as it is inspired by Glean. You can find an [index of all TWiG posts online](https://mozilla.github.io/glean/book/appendix/twig.html).)

_posts/2020-02-03-this-week-in-glean.md

@@ -5,9 +5,9 @@ published_date: "2020-02-03 15:00:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
-    - rust
+  - rust
 ---
 
 (“This Week in Glean” is a series of blog posts that the Glean Team at Mozilla is using to try to communicate better about our work. They could be release notes, documentation, hopes, dreams, or whatever: so long as it is inspired by Glean. You can find an [index of all TWiG posts online](https://mozilla.github.io/glean/book/appendix/twig.html).)

_posts/2020-02-06-edit-this-file-on-github.md

@@ -5,9 +5,9 @@ published_date: "2020-02-06 16:38:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
-    - rust
+  - rust
 ---
 
 At work I help with maintaining two large documentation books:

_posts/2020-03-02-two-year-moziversary.md

@@ -5,8 +5,8 @@ published_date: "2020-03-02 15:00:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
 ---
 
 Woops, looks like I missed my Two Year Moziversary!

_posts/2020-03-18-review-feedback.md

@@ -5,8 +5,8 @@ published_date: "2020-03-18 12:30:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
 ---
 
 Last week I read [Feedback Ladders: How We Encode Code Reviews at Netlify](https://www.netlify.com/blog/2020/03/05/feedback-ladders-how-we-encode-code-reviews-at-netlify/) and also shared that with my team at Mozilla.

_posts/2020-05-02-rust-in-an-instant.md

@@ -5,8 +5,8 @@ published_date: "2020-05-02 14:43:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 
 So I [tweeted](https://twitter.com/badboy_/status/1255802731241050112):

_posts/2020-05-04-this-week-in-glean.md

@@ -5,9 +5,9 @@ published_date: "2020-05-04 15:30:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
-    - rust
+  - rust
 ---
 
 (“This Week in Glean” is a series of blog posts that the Glean Team at Mozilla is using to try to communicate better about our work. They could be release notes, documentation, hopes, dreams, or whatever: so long as it is inspired by Glean.)

_posts/2020-06-19-build-your-project.md

@@ -5,8 +5,8 @@ published_date: "2020-06-19 13:46:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 ---
 
 What if you could build a Rust project without Cargo?

_posts/2020-09-01-leveraging-rust-to-build-cross-platform-mobile-libraries.md

@@ -5,9 +5,9 @@ published_date: "2020-09-01 15:00:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
-    - rust
+  - rust
 ---
 
 (“This Week in Glean” is a series of blog posts that the Glean Team at Mozilla is using to try to communicate better about our work. They could be release notes, documentation, hopes, dreams, or whatever: so long as it is inspired by Glean.)

_posts/2020-10-06-fog-progress-report.md

@@ -5,9 +5,9 @@ published_date: "2020-10-06 16:00:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
-    - rust
+  - rust
 ---
 
 (“This Week in Glean” is a series of blog posts that the Glean Team at Mozilla is using to try to communicate better about our work. They could be release notes, documentation, hopes, dreams, or whatever: so long as it is inspired by Glean.)

_posts/2020-12-18-glean-in-2021.md

@@ -5,9 +5,9 @@ published_date: "2020-12-18 15:00:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
-    - rust
+  - rust
 ---
 
 (“This Week in Glean” is a series of blog posts that the Glean Team at Mozilla is using to try to communicate better about our work. They could be release notes, documentation, hopes, dreams, or whatever: so long as it is inspired by Glean.)

_posts/2021-02-24-boring-monitoring.md

@@ -5,8 +5,8 @@ published_date: "2021-02-24 15:00:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
 ---
 
 (“This Week in Glean” is a series of blog posts that the Glean Team at Mozilla is using to try to communicate better about our work. They could be release notes, documentation, hopes, dreams, or whatever: so long as it is inspired by Glean.)

_posts/2021-03-01-three-year-moziversary.md

@@ -5,8 +5,8 @@ published_date: "2021-03-01 11:00:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
 ---
 
 Has it really been 3 years?

_posts/2021-04-16-rustc-ios-and-an-m1.md

@@ -5,9 +5,9 @@ published_date: "2021-04-16 15:00:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
-    - rust
+  - rust
 ---
 
 (“This Week in Glean” is a series of blog posts that the Glean Team at Mozilla is using to try to communicate better about our work. They could be release notes, documentation, hopes, dreams, or whatever: so long as it is inspired by Glean.)

_posts/2021-07-26-shipping-glean-with-geckoview.md

@@ -5,9 +5,9 @@ published_date: "2021-07-26 12:00:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
-    - rust
+  - rust
 ---
 
 (“This Week in Glean” is a series of blog posts that the Glean Team at Mozilla is using to try to communicate better about our work. They could be release notes, documentation, hopes, dreams, or whatever: so long as it is inspired by Glean.)

_posts/2021-09-17-glean-geckoview.md

@@ -5,9 +5,9 @@ published_date: "2021-09-17 13:00:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
-    - rust
+  - rust
 excerpt: |
   It took us several more weeks to put everything into place,
   but we're finally shipping the Rust parts of the Glean Android SDK with GeckoView

_posts/2021-10-14-fenix-physical-device-testing.md

@@ -5,8 +5,8 @@ published_date: "2021-10-14 17:00:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
 excerpt: |
   The Firefox for Android (Fenix) project runs extensive tests on every pull request
   and when merging code back into the `main` branch.

_posts/2021-11-01-buggy-glean-and-a-data-incident.md

@@ -5,9 +5,9 @@ published_date: "2021-11-01 15:00:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
-    - rust
+  - rust
 excerpt: |
   Shortly after we shipped Glean through GeckoView in a Fenix Nightly release
   we received a crash report pointing to code that we haven't touched in a long time.

_posts/2021-12-17-glean-in-2021.md

@@ -5,8 +5,8 @@ published_date: "2021-12-17 14:00:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
 excerpt: |
   A year ago I posted Glean in 2021 as a way to look into the future
   and set out a vision and plan for the project.

_posts/2022-01-31-how-we-ship-ios-libraries.md

@@ -5,9 +5,9 @@ published_date: "2022-01-31 12:40:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
-    - rust
+  - rust
 excerpt: |
   We ship the Glean SDK for multiple platforms, one of them being iOS applications.
   Previously I talked about how we got it to build on the Apple ARM machines.

_posts/2022-02-25-your-personal-glean-data-pipeline.md

@@ -5,8 +5,8 @@ published_date: "2022-02-25 15:00:00 +0100"
 layout: post-yt.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
 excerpt: |
   On February 11th, 2022 I gave a lightning talk titled
   "Your personal Glean data pipeline", presenting a little side project for

_posts/2022-03-04-four-year-moziversary.md

@@ -5,8 +5,8 @@ published_date: "2022-03-04 15:20:00 +0100"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
 excerpt: |
   Celebrating four years in my job as a Telemetry Engineer at Mozilla.
 ---

_posts/2023-03-01-five-year-moziversary.md

@@ -5,8 +5,8 @@ published_date: "2023-03-01 08:00:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - mozilla
+  - mozilla
 excerpt: |
   Celebrating five years in my job as a Telemetry Engineer at Mozilla.
 ---

_posts/2023-07-24-old-ruby-on-modern-nix.md

@@ -5,8 +5,8 @@ published_date: "2023-07-24 14:40:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - nix
+  - nix
 ---
 
 The other day I had to deploy an old Ruby 2.7 application.

_posts/2024-01-02-oelf.md

@@ -5,8 +5,8 @@ published_date: "2024-01-02 13:00:00 +0200"
 layout: post.liquid
 data:
   route: blog
-  tags:
+tags:
-    - rust
+  - rust
 excerpt: |
     sqlelf lets you explore ELF objects through the power of SQL.
     It turns any executable into a queryable database.

index.liquid

@@ -19,8 +19,8 @@ data:
   {% assign phrase = " minute read" | prepend: reading_time %}
   <time pubdate="pubdate">{{ post.published_date | date: "%b %d, %Y" }} · {{ phrase }}</time>
 
-  {% if post.data and post.data.tags -%}
+  {% if post.data and post.tags -%}
-  {%- for tag in post.data.tags %}
+  {%- for tag in post.tags %}
   · <a href="/tagged/{{ tag }}.html">{{ tag }}</a>
   {%- endfor %}
   {%- endif -%}

tagged/mozilla.liquid

@@ -11,7 +11,7 @@ data:
 <table>
   {%- for post in collections.posts.pages %}
     {%- assign postyear = post.published_date | date: "%Y" %}
-    {%- if post.data.tags and post.data.tags contains "mozilla" -%}
+    {%- if post.tags and post.tags contains "mozilla" -%}
       <tr>
         <td>{{ post.published_date | date: "%d. %b %Y"}}</td>
         <td><a href="/{{post.permalink }}">{{post.title}}</a></td>

tagged/mozilla.xml.liquid

@@ -8,7 +8,7 @@ permalink: /tagged/mozilla.xml
     <link>https://fnordig.de</link>
     <description>fnordig - posts tagged with 'mozilla'</description>
     {% for post in collections.posts.pages %}
-    {%- if post.data.tags and post.data.tags contains "mozilla" -%}
+    {%- if post.tags and post.tags contains "mozilla" -%}
     <item>
       <title>{{ post.title | escape }}</title>
       <link>https://fnordig.de/{{ post.permalink }}</link>

tagged/nix.liquid

@@ -11,7 +11,7 @@ data:
 <table>
   {%- for post in collections.posts.pages %}
     {%- assign postyear = post.published_date | date: "%Y" %}
-    {%- if post.data.tags and post.data.tags contains "nix" -%}
+    {%- if post.tags and post.tags contains "nix" -%}
       <tr>
         <td>{{ post.published_date | date: "%d. %b %Y"}}</td>
         <td><a href="/{{post.permalink }}">{{post.title}}</a></td>

tagged/nix.xml.liquid

@@ -8,7 +8,7 @@ permalink: /tagged/nix.xml
     <link>https://fnordig.de</link>
     <description>fnordig - post tagged with 'nix'</description>
     {% for post in collections.posts.pages %}
-    {%- if post.data.tags and post.data.tags contains "nix" -%}
+    {%- if post.tags and post.tags contains "nix" -%}
     <item>
       <title>{{ post.title | escape }}</title>
       <link>https://fnordig.de/{{ post.permalink }}</link>

tagged/rust.liquid

@@ -11,7 +11,7 @@ data:
 <table>
   {%- for post in collections.posts.pages %}
     {%- assign postyear = post.published_date | date: "%Y" %}
-    {%- if post.data.tags and post.data.tags contains "rust" -%}
+    {%- if post.tags and post.tags contains "rust" -%}
       <tr>
         <td>{{ post.published_date | date: "%d. %b %Y"}}</td>
         <td><a href="/{{post.permalink }}">{{post.title}}</a></td>

tagged/rust.xml.liquid

@@ -8,7 +8,7 @@ permalink: /tagged/rust.xml
     <link>https://fnordig.de</link>
     <description>fnordig - post tagged with 'rust'</description>
     {% for post in collections.posts.pages %}
-    {%- if post.data.tags and post.data.tags contains "rust" -%}
+    {%- if post.tags and post.tags contains "rust" -%}
     <item>
       <title>{{ post.title | escape }}</title>
       <link>https://fnordig.de/{{ post.permalink }}</link>