Make posts category info separate, archive more automatic.

Inspired by: https://ginopalazzo.github.io/web/jekyll-color-code-categories.html

Author: petrroll

_config.yml

@@ -66,3 +66,5 @@ exclude:
   - README.md
   - CNAME
 
+collections:
+  - posts_category_info

_includes/archive-category.html

@@ -1,13 +1,14 @@
+{% comment %} Assumes `category_info` variable containing `.name` and `.description`. {% endcomment %}
 <div class="archive-group">
-    <div id="#{{ category_name | slugize }}"></div>
+    <div id="#{{ category_info.name | slugize }}"></div>
     <p></p>
-    <h2 class="category-head">{{ category_name | capitalize }}</h2>
-    <a name="{{ category_name | slugize }}"></a>
-    {{category_desc}}
+    <h2 class="category-head">{{ category_info.name | capitalize }}</h2>
+    <a name="{{ category_info.name | slugize }}"></a>
+    {{category_info.description}}
     {% capture curr_date %}first-entry{% endcapture %}
     <div class="group-year">
       <ul>
-      {% for post in site.categories[category_name] %}
+      {% for post in site.categories[category_info.name] %}
         {% capture post_date %}{{ post.date | date: "%b, %Y" }}{% endcapture %}
         {% unless curr_date == post_date %}
           {% unless curr_date == "first-entry" %}

_posts_category_info/01_papers.html

@@ -0,0 +1,4 @@
+---
+name: papers
+description: "Notes written down while reading and trying to understand random ML/SWE/CS papers. Originally not intended for the eyes of other people and therefore possibly incomprehensible and/or flat out wrong."
+---

_posts_category_info/02_misc.html

@@ -0,0 +1,4 @@
+---
+name: misc
+description: "Various random content I thought might be interesting."
+---

archive.html

@@ -5,11 +5,7 @@
 ---
 
 <div id="archives">
-  {% capture category_name %}papers{% endcapture %}
-  {% capture category_desc %}Notes written down while reading and trying to understand random ML/SWE/CS papers. Originally not intended for the eyes of other people and therefore possibly incomprehensible and/or flat out wrong. {% endcapture %}
-  {% include archive-category.html %}
-
-  {% capture category_name %}misc{% endcapture %}
-  {% capture category_desc %}Various random content I thought might be interesting. {% endcapture %}
-  {% include archive-category.html %}
+  {% for category_info in site.posts_category_info %}
+    {% include archive-category.html %}
+  {% endfor %}
 </div>