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1<!doctype html><html lang=en-us><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><meta name=generator content="JBMAFP - github.com/mitjafelicijan/jbmafp"><link href="data:image/x-icon;base64,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" rel=icon type=image/x-icon><title>Development environments with Nix</title><meta name=description content="Nix is amazing for making reproducible cross OS development environment."><meta name=author content="Mitja Felicijan"><link rel=alternate type=application/rss+xml title="Mitja Felicijan's posts" href=https://mitjafelicijan.com/index.xml><link rel=alternate type=application/rss+xml title="Mitja Felicijan's notes" href=https://mitjafelicijan.com/notes.xml><style>:root{--border-color:gainsboro;--border-size:2px;--link-color:blue;--bg-color:#eee}*::selection{background:var(--link-color);color:#fff}*::-moz-selection{background:var(--link-color);color:#fff}*::-webkit-selection{background:var(--link-color);color:#fff}body{padding:2.5rem;max-width:1900px;background:#fff;font-family:sans-serif;line-height:1.35rem;font-size:16px}hr{border:0;border-bottom:var(--border-size)solid var(--border-color);margin-block-start:1.5rem}a{color:var(--link-color);text-decoration:none}h1,h2,h3{line-height:initial}h1{font-size:xx-large}footer{margin-block-start:2rem}cap{text-transform:capitalize}blockquote{font-style:italic}table{max-width:100%;border:var(--border-size)solid var(--border-color);border-collapse:separate;border-spacing:0}table thead tr th{border-bottom:var(--border-size)solid var(--border-color);text-align:left}table th,table td{padding:.5em .8em}ul.list li{padding:.2em 0}ul{line-height:1.35em}pre{text-wrap:nowrap;overflow-x:auto;padding:0 1em;border:var(--border-size)solid var(--border-color)}code{padding:0 3px;font-size:14px;border:0;background:var(--bg-color)}pre code{line-height:1.3em;background:#fff}pre,code,pre *,code *{font-family:monospace}figure{margin-inline-start:0;margin-inline-end:0}figcaption{width:800px;max-width:100%;text-align:center}figcaption p{margin:.3em 0 1.5em;font-style:italic}img,video,audio{width:800px;max-width:100%;border:var(--border-size)solid var(--border-color);padding:.5em}header nav{display:flex;gap:.9rem}article iframe{margin:0!important}audio::-webkit-media-controls-enclosure{border-radius:0}@media only screen and (max-width:600px){body{padding:.5em;word-wrap:break-word}header nav{gap:.7rem}header nav .hob{display:none}a{word-wrap:break-word}img,video,audio{padding:0}}</style><header><nav class=main itemscope itemtype=http://schema.org/SiteNavigationElement role=navigation aria-label="Main navigation"><a href=/>Home</a>
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9<a href=/index.xml target=_blank class=hob>RSS</a></nav></header><main role=main><article itemtype=http://schema.org/Article><h1 itemtype=headline>Development environments with Nix</h1><p><cap>note</cap>, Jun 25, 2023 on <a href=https://mitjafelicijan.com>Mitja Felicijan's blog</a><div><p>Nix is amazing for making reproducible cross OS development environment.<p>First you need to <a href=https://nixos.org/download.html>install Nix package
10manager</a>.<ul><li>Create a file <code>shell.nix</code> in your project folder.<li>In the section that has <code>python3</code> etc add programs you want to use. These can
11be CLI or GUI applications. It doesn't matter to Nix.</ul><pre tabindex=0 style=background-color:#fff><code><span style=display:flex><span>{ pkgs ? <span style=color:#00f>import</span> <span style=color:#a31515>&lt;nixpkgs&gt;</span> {} }:
12</span></span><span style=display:flex><span> pkgs.mkShell {
13</span></span><span style=display:flex><span> nativeBuildInputs = <span style=color:#00f>with</span> pkgs.buildPackages; [
14</span></span><span style=display:flex><span> python3
15</span></span><span style=display:flex><span> tinycc
16</span></span><span style=display:flex><span> ];
17</span></span><span style=display:flex><span>}
18</span></span></code></pre><p>And then run it <code>nix-shell</code>. By default it will look for <code>shell.nix</code> file. If
19you want to specify a different file use <code>nix-shell file.nix</code>. That is about it.<p>When the shell is spawned it could happen that your <code>PS1</code> prompt will be
20overwritten and your prompt will look differently. In that case you need to
21either do <code>NIX_SHELL_PRESERVE_PROMPT=1 nix shell</code> or add
22<code>NIX_SHELL_PRESERVE_PROMPT</code> variable to your <code>bashrc</code> or <code>zshrc</code> file and set it
23to <code>1</code>.<p>I also have a modified <code>PS1</code> prompt for Bash that I use and it also catches the
24usage of Nix shell.<pre tabindex=0 style=background-color:#fff><code><span style=display:flex><span>NIX_SHELL_PRESERVE_PROMPT=1
25</span></span><span style=display:flex><span>
26</span></span><span style=display:flex><span>parse_git_branch() {
27</span></span><span style=display:flex><span> git branch 2&gt; /dev/null | sed -e <span style=color:#a31515>&#39;/^[^*]/d&#39;</span> -e <span style=color:#a31515>&#39;s/* \(.*\)/ (\1)/&#39;</span>
28</span></span><span style=display:flex><span>}
29</span></span><span style=display:flex><span>
30</span></span><span style=display:flex><span>is_inside_nix_shell() {
31</span></span><span style=display:flex><span> nix_shell_name=<span style=color:#a31515>&#34;</span><span style=color:#00f>$(</span>basename <span style=color:#a31515>&#34;</span>$IN_NIX_SHELL<span style=color:#a31515>&#34;</span> 2&gt;/dev/null<span style=color:#00f>)</span><span style=color:#a31515>&#34;</span>
32</span></span><span style=display:flex><span> <span style=color:#00f>if</span> [[ -n <span style=color:#a31515>&#34;</span>$nix_shell_name<span style=color:#a31515>&#34;</span> ]]; <span style=color:#00f>then</span>
33</span></span><span style=display:flex><span> echo <span style=color:#a31515>&#34; \e[0;36m(nix-shell)\e[0m&#34;</span>
34</span></span><span style=display:flex><span> <span style=color:#00f>fi</span>
35</span></span><span style=display:flex><span>}
36</span></span><span style=display:flex><span>
37</span></span><span style=display:flex><span>export PS1=<span style=color:#a31515>&#34;[\033[38;5;9m\]\u@\h\[</span><span style=color:#00f>$(</span>tput sgr0<span style=color:#00f>)</span><span style=color:#a31515>\]]</span><span style=color:#00f>$(</span>is_inside_nix_shell<span style=color:#00f>)</span><span style=color:#a31515>\[\033[33m\]\$(parse_git_branch)\[\033[00m\] \w\[</span><span style=color:#00f>$(</span>tput sgr0<span style=color:#00f>)</span><span style=color:#a31515>\] \n</span>$<span style=color:#a31515> &#34;</span>
38</span></span></code></pre><p>And this is what it looks like when you are in a Nix shell. Otherwise that part
39of prompt is omitted<figure><img src=/notes/ps1-prompt.png alt="PS1 Prompt"></figure><p>More resources:<ul><li><a href=https://nixos.wiki/wiki/Development_environment_with_nix-shell>https://nixos.wiki/wiki/Development_environment_with_nix-shell</a><li><a href=https://nixos.wiki/wiki/Main_Page>https://nixos.wiki/wiki/Main_Page</a><li><a href=https://itsfoss.com/why-use-nixos/>https://itsfoss.com/why-use-nixos/</a><li><a href=https://mynixos.com/>https://mynixos.com/</a></ul></div></article></main><section><hr><h2>Posts from blogs I follow around the net</h2><ul><li><a href=https://utcc.utoronto.ca/~cks/space/blog/linux/NFSv4ServerLockClients target=_blank rel=noopener>Finding which NFSv4 client owns a lock on a Linux NFS(v4) server</a> — <a href=https://utcc.utoronto.ca/~cks/space/blog/>Chris's Wiki :: blog</a><div>A while back I wrote an entry about finding which NFS client owns
40a lock on a Linux NFS server, which turned
41out to be specific to NFS v3 (which I really should have seen coming,
42since it involved NLM and lockd). Finding the NFS v4 client that
43owns a lock is, depending on your perspective, either simpl…<li><a href=http://www.landley.net/notes-2023.html#28-10-2023 target=_blank rel=noopener>October 28, 2023</a> — <a href=http://www.landley.net/notes-2023.html>Rob Landley's Blog Thing for 2023</a><div>Oh good grief, two of my least favorite licensing people, Larry Rosen
44and Bradley Kuhn, are interacting on the OSI's license-discuss
45list where the're doing
46bad computer history and insisting that a guy Larry Rosen
47coincidentally interviewed for a book years ago is clearly the origin of
48somethin…<li><a href="http://offbeatpursuit.com:80/blog/?id=25" target=_blank rel=noopener>A fix by any other name</a> — <a href=http://offbeatpursuit.com:80/blog/>WLOG - blog</a><div>tags:
49i2c, plan9
50Another month, another file system.
51Well, if you can’t fix it in software, fix it in hardware (looking at
52you, bme680, we’re not
53done yet). The show must go on, as they say, and I would like my
54experiments to go on.
55So a “new” addition to the environmental sensor family connected to
56the h…<li><a href=https://mirzapandzo.com/next-image-url-parameter-is-valid-but-upstream-response-is-invalid target=_blank rel=noopener>Next/Image "url" parameter is valid but upstream response is invalid</a> — <a href=https://mirzapandzo.com/>Mirza Pandzo's Blog</a><div>Getting "url" parameter is valid but upstream response is invalid error with Next/Image on WSL2<li><a href=https://drewdevault.com/2023/10/13/Going-off-script.html target=_blank rel=noopener>Going off-script</a> — <a href=https://drewdevault.com>Drew DeVault's blog</a><div>There is a phenomenon in society which I find quite bizarre. Upon our entry to
57this mortal coil, we are endowed with self-awareness, agency, and free will.
58Each of the 8 billion members of this human race represents a unique person, a
59unique worldview, and a unique agency. Yet, many of us have the sam…<li><a href=https://szymonkaliski.com/writing/2023-10-02-building-a-diy-pen-plotter/ target=_blank rel=noopener>Building a DIY Pen Plotter</a> — <a href=http://github.com/dylang/node-rss>Szymon Kaliski</a><div>This article documents my learnings from designing and building a DIY Pen Plotter during the summer of 2023.
60My ultimate goal is to build my…<li><a href=https://neil.computer/notes/chart-of-accounts-for-startups-and-saas-companies/ target=_blank rel=noopener>Chart of Accounts for Startups and SaaS Companies</a> — <a href=https://neil.computer/>Neil Panchal</a><div>Accounting is fundamental to starting a business. You need to have a basic understanding of accounting principles and essential bookkeeping. I had to learn it. There was no choice. For filing taxes, your CPA is going to ask you for an Income Statement (also known as P/L statement). If<li><a href=https://journal.valeriansaliou.name/deploy-a-nomad-cluster-on-alpine-linux-with-vultr/ target=_blank rel=noopener>Deploy a Nomad Cluster on Alpine Linux with Vultr</a> — <a href=https://journal.valeriansaliou.name/>Valerian Saliou</a><div>After spending countless hours trying to understand how to deploy my apps on Kubernetes for the first time to host Mirage, an AI API service that I run, I ended up making myself a promise that the next app I work on would be using a more productive & simpler<li><a href=https://jcs.org/2023/10/25/wifi_da target=_blank rel=noopener>BlueSCSI Wi-Fi Desk Accessory 1.0 Released</a> — <a href=https://jcs.org/>joshua stein</a><div>BlueSCSI Wi-Fi Desk Accessory
611.0 has been released:
62wifi_da-1.0.sit
63(StuffIt 3 archive)
64SHA256: ccfc9d27dd5da7412d10cef73b81119a1fec3848e4d1d88ff652a07ffdc6a69aSHA1: ff124972f202ceda6d7fa4788110a67ccda6a13a
65This is the initial public release of my BlueSCSI Wi-Fi Desk Accessory for
66classic MacOS.<li><a href=https://michael.stapelberg.ch/posts/2023-10-25-my-all-flash-zfs-network-storage-build/ target=_blank rel=noopener>My 2023 all-flash ZFS NAS (Network Storage) build</a> — <a href=https://michael.stapelberg.ch/>Michael Stapelbergs Website</a><div>For over 10 years now, I run two self-built NAS (Network Storage) devices which serve media (currently via Jellyfin) and run daily backups of all my PCs and servers.
67In this article, I describe my goals, which hardware I picked for my new build (and why) and how I set it up.
68Design Goals
69I use my netw…</ul><p>Generated with <a href=https://git.sr.ht/~sircmpwn/openring target=_blank rel=noopener>openring</a>.</section><footer><hr><p><big><strong>Want to comment or have something to add?</strong></big><p>You can write me an email
70at <a href=mailto:mitja.felicijan@gmail.com>mitja.felicijan@gmail.com</a> or
71catch up with me <a href=https://telegram.me/mitjafelicijan target=_blank>on Telegram</a>.<hr><p>This website does not track you. Content is made available under the <a href=https://creativecommons.org/licenses/by/4.0/ target=_blank rel=noreferrer>CC BY 4.0 license</a> unless
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