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index.html

@@ -274,7 +274,7 @@ pre.pygments .tok-il { color: #666666 } /* Literal.Number.Integer.Long */
 <li><a href="#_access_a_top_level_package_from_the_nixpkgsnixos_repo_3">10.4.1. Access a top level package from the Nixpkgs/NixOS repo</a></li>
 <li><a href="#_access_a_flake_3">10.4.2. Access a flake</a></li>
 <li><a href="#_access_a_haskell_library_package_in_the_nixpkgs_repo_without_a_cabal_file_2">10.4.3. Access a Haskell library package in the nixpkgs repo (without a <code>.cabal</code> file)</a></li>
-<li><a href="#_access_to_a_haskell_package_on_your_local_computer">10.4.4. Access to a Haskell package on your local computer</a></li>
+<li><a href="#_access_to_a_haskell_package_defined_in_a_flake">10.4.4. Access to a Haskell package defined in a flake</a></li>
 <li><a href="#_set_an_environment_variable">10.4.5. Set an environment variable</a></li>
 <li><a href="#devshell-nix-non-flake">10.4.6. Access a non-flake package (not in nixpkgs)</a>
 <ul class="sectlevel4">
@@ -4934,11 +4934,13 @@ $ runghc Main.hs
 </div>
 </div>
 <div class="sect3">
-<h4 id="_access_to_a_haskell_package_on_your_local_computer">10.4.4. Access to a Haskell package on your local computer</h4>
+<h4 id="_access_to_a_haskell_package_defined_in_a_flake">10.4.4. Access to a Haskell package defined in a flake</h4>
 <div class="paragraph">
-<p>Ex: Access three Haskell packages
+<p>In this example we will access three Haskell packages
 (<code>pandoc-linear-table</code>, <code>pandoc-logic-proof</code>, and <code>pandoc-columns</code>)
-that are on my hard drive.</p>
+that are defined as flakes on my hard drive.
+We are using <code>haskell-flake</code>, so the development environment is
+set up automatically; no need to define <code>devShells</code>.</p>
 </div>
 <div class="listingblock">
 <div class="title">flake.nix</div>
@@ -4975,7 +4977,8 @@ that are on my hard drive.</p>
 <span class="normal">30</span>
 <span class="normal">31</span>
 <span class="normal">32</span>
-<span class="normal">33</span></pre></div></td><td class="code"><div><pre><span></span><span class="tok-p">{</span>
+<span class="normal">33</span>
+<span class="normal">34</span></pre></div></td><td class="code"><div><pre><span></span><span class="tok-p">{</span>
   <span class="tok-ss">description</span> <span class="tok-o">=</span> <span class="tok-s2">&quot;Pandoc build system for maths web&quot;</span><span class="tok-p">;</span>
 
   <span class="tok-ss">inputs</span> <span class="tok-o">=</span> <span class="tok-p">{</span>
@@ -4987,6 +4990,7 @@ that are on my hard drive.</p>
     pandoc-columns<span class="tok-o">.</span><span class="tok-ss">url</span> <span class="tok-o">=</span> <span class="tok-s2">&quot;/home/amy/github/pandoc-columns&quot;</span><span class="tok-p">;</span>
     pandoc-query<span class="tok-o">.</span><span class="tok-ss">url</span> <span class="tok-o">=</span> <span class="tok-s2">&quot;/home/amy/codeberg/pandoc-query&quot;</span><span class="tok-p">;</span>
   <span class="tok-p">};</span>
+
   <span class="tok-ss">outputs</span> <span class="tok-o">=</span> inputs<span class="tok-p">@{</span> self<span class="tok-p">,</span> nixpkgs<span class="tok-p">,</span> flake-parts<span class="tok-p">,</span> pandoc-linear-table<span class="tok-p">,</span> pandoc-logic-proof<span class="tok-p">,</span> pandoc-columns<span class="tok-p">,</span> pandoc-query<span class="tok-p">,</span> <span class="tok-o">...</span> <span class="tok-p">}:</span>
     flake-parts<span class="tok-o">.</span>lib<span class="tok-o">.</span>mkFlake <span class="tok-p">{</span> <span class="tok-k">inherit</span> inputs<span class="tok-p">;</span> <span class="tok-p">}</span> <span class="tok-p">{</span>
       <span class="tok-ss">systems</span> <span class="tok-o">=</span> nixpkgs<span class="tok-o">.</span>lib<span class="tok-o">.</span>systems<span class="tok-o">.</span>flakeExposed<span class="tok-p">;</span>
@@ -5011,6 +5015,39 @@ that are on my hard drive.</p>
 </pre></div></td></tr></table></div></code></pre>
 </div>
 </div>
+<div class="paragraph">
+<p>Here&#8217;s a demonstration using the shell.</p>
+</div>
+<div class="literalblock">
+<div class="content">
+<pre class="nowrap">$ nix develop
+$ cabal info pandoc-columns
+Warning: The package list for 'hackage.haskell.org' is 22 days old.
+Run 'cabal update' to get the latest list of available packages.
+* pandoc-columns   (program and library)
+    Synopsis:      A pandoc filter that provides a Markdown extension for
+                   columns.
+    Versions available: 0.2.0.5
+    Versions installed: [ Not installed ]
+    Homepage:      https://github.com/mhwombat/pandoc-columns
+    Bug reports:   https://github.com/mhwombat/pandoc-columns/issues
+    Description:   For more information and a tutorial on how to use this
+                   package, please see the README at
+                   &lt;https://github.com/mhwombat/pandoc-columns#readme&gt;.
+    Category:      Text
+    License:       BSD-3-Clause
+    Author:        Amy de Buitléir
+    Maintainer:    amy@nualeargais.ie
+    Source repo:   https://github.com/mhwombat/pandoc-columns.git
+    Executables:   pandoc-columns
+    Dependencies:  base &gt;=4.16.4 &amp;&amp; &lt;4.17, pandoc-types &gt;=1.22.2 &amp;&amp; &lt;1.23,
+                   pandoc &gt;=2.19.2 &amp;&amp; &lt;2.20, base &gt;=4.16.4 &amp;&amp; &lt;4.17,
+                   pandoc-types &gt;=1.22.2 &amp;&amp; &lt;1.23, pandoc-columns
+    Cached:        No
+    Modules:
+        Text.Pandoc.Filters.Columns</pre>
+</div>
+</div>
 </div>
 <div class="sect3">
 <h4 id="_set_an_environment_variable">10.4.5. Set an environment variable</h4>
@@ -5573,7 +5610,7 @@ Hello from your flake!</pre>
 </div>
 <div id="footer">
 <div id="footer-text">
-Last updated 2025-09-13 20:11:05 IST
+Last updated 2025-09-13 20:20:17 IST
 </div>
 </div>
 </body>

source/recipes/devshell/haskell-flake/main.adoc0

@@ -31,6 +31,22 @@ $ cabal info pandoc-columns
 $# EOL
 ....
 
+FINISH
+
+FINISH
+
+FINISH
+
+FINISH
+
+FINISH
+
+FINISH
+
+FINISH
+
+FINISH
+
 ////
 Good adoc0 scripts clean up after themselves.
 $ cd .. ; rm -rf tempwork # clean up