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arch:arch_on_the_pi [2016/10/07 17:46]
Julien Deswaef [Installing ikiwiki]
arch:arch_on_the_pi [2020/08/06 21:11]
Julien Deswaef
Line 1: Line 1:
 ====== Arch on a Pi ====== ====== Arch on a Pi ======
  
-Things related to [[http://archlinuxarm.org|Arch Linux ARM]].+Some random notes related to [[http://archlinuxarm.org|Arch Linux ARM]] on a Raspberry Pi. Some of these notes might be turned into their own page one day.
  
-===== Compiling Blender =====+===== Blender ===== 
 +==== Installing from packages on RPi3 ==== 
 +[[https://archlinuxarm.org/packages/aarch64/blender|Blender is compiled for ARMv8 architecture only for AArch64]]. 
 + 
 +See bottom of this page for the right archive to use at installation: https://archlinuxarm.org/platforms/armv8/broadcom/raspberry-pi-3#installation 
 + 
 +Rendering a default file seems to require ''xvfb'': 
 +<code> 
 +xvfb-run blender -b -noaudio untitled_e.blend -o // -f 1 
 +</code> 
 + 
 + 
 +==== Compiling on RPi2 ====
 If it's still not in the repositories, here's a way to compile latest stable Blender for RPi2 If it's still not in the repositories, here's a way to compile latest stable Blender for RPi2
 [[https://projects.archlinux.org/svntogit/community.git/tree/trunk?h=packages/blender|Download these two files]]. And change these two lines from PKGBUILD: [[https://projects.archlinux.org/svntogit/community.git/tree/trunk?h=packages/blender|Download these two files]]. And change these two lines from PKGBUILD:
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 ===== Installing ikiwiki ===== ===== Installing ikiwiki =====
-  * Install Git +Install git and dev tools. 
-  * Install Make +<code> 
-  * <del><code=bash>$: cpan</code></del> +$: sudo pacman -Syu git base-devel 
-  * Use Pacman with this[[https://aur.archlinux.org/packages/ikiwiki/| Aur package]]+</code>
  
 +Install [[https://aur.archlinux.org/packages/ikiwiki/| ikiwiki from Aur package]]. 
 +
 +You'll need 2 extra dependencies from Aur: 
 +  * [[https://aur.archlinux.org/packages/perl-cgi-formbuilder/ | perl-cgi-formbuilder]]
 +  * [[https://aur.archlinux.org/packages/perl-rpc-xml/ | perl-rpc-xml]]. 
 +Install those first. Compiling ikiwiki takes a while on a Raspberry Pi. Be patient.
 +
 +If you want to have images handle by the wiki, you will need also Imagemagick 
 +
 +Although ikiwiki could be running from any server, I found it easier to run it behind Apache. So be sure to have that installed.
 +
 +Create an unprivileged user (here called wiki) who will be editing the wiki:
 +<code>
 +sudo useradd -m wiki
 +sudo passwd wiki
 +</code>
 +
 +Following https://www.linode.com/docs/websites/wikis/ikiwiki-on-arch-linux/
  
 ===== Resizing a partition ===== ===== Resizing a partition =====
 //Copied from  http://raspberrypi.stackexchange.com/a/501 // //Copied from  http://raspberrypi.stackexchange.com/a/501 //
- 
-First make a backup of your SD Card. 
  
   * ''sudo fdisk /dev/mmcblk0''   * ''sudo fdisk /dev/mmcblk0''
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   * You can now verify that the system is using the full capacity of the SD Card by entering the following command: ''df -h''   * You can now verify that the system is using the full capacity of the SD Card by entering the following command: ''df -h''
  
-==== Why This Works ====+=== Why This Works ===
 Actually, when we delete a partition, we don't delete data, we just delete the reference to the partition in the partition table. By creating a new partition exactly from the same spot and of the same type, we keep the data but expanded the size to the full available space of the SD card. Actually, when we delete a partition, we don't delete data, we just delete the reference to the partition in the partition table. By creating a new partition exactly from the same spot and of the same type, we keep the data but expanded the size to the full available space of the SD card.
  
 By resizing (which is safe to run on a mounted disk), we tell the file system to use all the space in the new partition. By resizing (which is safe to run on a mounted disk), we tell the file system to use all the space in the new partition.
 +
 +
 +===== Python UnicodeEncodeError horror =====
 +So your Python script works on your machine. But when you port it to a freshly installed Arch Linux Arm on a Pi, all hell breaks loose as soon as a weird character pops up. Something like this shows up: 
 +<code>UnicodeEncodeError: 'ascii' codec can't encode character '\xe9' in position 227: ordinal not in range(128)</code>
 +Well, don't start modifying your Python code (as you said, it does not have that problem on your machine).  It's because the default locale of Arch Linux is ''LANG-C'' and what you want is UTF-8 support. There is many ways to solve this, including forcing Python to use a locale different from the system. But I like to have my systems with similar settings. So just follow tutorials [[https://wiki.archlinux.org/index.php/Locale|here]].
 +
arch/arch_on_the_pi.txt · Last modified: 2020/08/06 21:11 by Julien Deswaef