How to install GDAL and QGIS on a Raspberry Pi?

1. Install Raspbian:
   • Download NOOBS
   • Follow the NOOBS Setup instructions.
2. Update Raspbian from its Debian wheezy base to Debian jessie:
   • sudo vi /etc/apt/sources.list # or use your favourite editor
   • change all references of wheezy to jessie
   • sudo apt-get update
   • sudo apt-get upgrade # this will take a long time, with occasional user prompts
   • sudo apt-get dist-upgrade # this will take a very long time …
3. Install qgis: sudo apt-get install gdal-bin qgis

This will install QGIS 2.2:

It's a bit slow, but seems to work as expected. Large geographic queries are pretty painful.

Update: It's just updated to 2.4 in Raspbian Jessie. It works.