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The Postgres.app website has pretty detailed information on upgrading your installation, however it does not cover a situation I came across.

After upgrading a minor release (9.3.x -> 9.4.x) psycopg2 failed to run with the following error:

Library not loaded: /Applications/Postgres.app/Contents/Versions/9.3/lib/libssl.1.0.0.dylib

Fixing this issue required that I reinstall and rebuild psycopg2 without pip's cache in all my environments.

$ pip uninstall psycopg2 $ pip install --no-cache-dir psycopg2

So if you are using PostGIS 2.0 and get an error like this:

django.db.utils.ProgrammingError: type modifier is not allowed for type "geometry"

So I was setting up supervisord on a Debian server and figured the cleanest way to install and set it up would be to apt-get install supervisor however after a little bit of confusion I found this package is not properly set up to read the default config provided in /etc/supervisor/supervisord.conf.

So you need to open up /etc/defaults/supervisor and change the following line:

DAEMON_OPTS=""

to:

DAEMON_OPTS="-c /etc/supervisor/supervisord.conf"

Then:

/etc/init.d/supervisor stop /etc/init.d/supervisor start

This is by no means finished and tested but I have been trying to find a simple way of serializing model instances data so I can just go ahead and json.dumps that data. I find the built in serializers in Django don't quite fit what I want.

I wanted to apply some Javascript to certain date fields (but not all) in an application I am working on. I wanted to keep it as simple as possible on the frontend. It is difficult to do this in a generic way when you are working with Django forms since a DateField is rendered as a plan old text input by default. At least that is what I thought...

After a very short time digging (surprised I missed it before) I found that you can pass an attrs argument to a widget that basically sets attributes on the rendered HTML element. So now my field looks like this:

date_from = forms.DateField( widget=forms.DateInput(attrs={'class': 'datepicker-pls'}) )

So I came across a problem where I was running tests with django-nose using the --with-xunit option and I was meeting the error:

error: no such option: --with-xunit

I came across this minor, but annoying problem after installing MonoDevelop where the clicking the browser links just caused an error.

Since I use a very simple lightweight setup of Xmonad it was sufficient to add the following to my ~/.xinitrc file:

export BROWSER=chromium

I had this problem when I started up X this morning that Xmobar in my configuration was being hidden by windows, like they were displayed over it. My configuration had not changed in this regard for about 2 years and I had never come across this problem before, so I went to have a look on the Arch Forums. I came across this thread and whilst there is a number of solutions here what worked for me was the following:

$ vim ~/.xmonad/xmonad.hs # Check config $ xmonad --recompile

Then hit mod-q and it was back to normal.

Update

A day later, the same problem came up again when starting my work PC. I took another look at that same thread where the posters had suggested that it is a bug in Xmobar causing the problem. So I downgraded to 0.15-1 using the downgrade utility from AUR and this time my problem is resolved.

Update 2

You need to install the following package:

$ sudo pacman -S gstreamer0.10-plugins

The new Ubuntu Software Centre is really great, and I often explore it to find the awesome packages that are available to install. One thing that bugs the hell out of me, however, is that in recent versions of Ubuntu .deb files (ie when you download a deb package and manually install it) open in the Ubuntu Software Centre and the process is incredibly SLOW.

I have dealt with this and just accepted it, instead using the command line (dpkg) instead to avoid using the Ubuntu Software Centre, but I occasionaly forget and just double click the deb file to launch it. Today I decided to solve this problem for myself, so here is how I did it.

Tip: How to give the old deb installer it's place back in newer versions of Ubuntu (instructions are assuming use of pcmanfm, if you are using nautilus, you should start using pcmanfm, it's better - otherwise the process is much the same in nautilus) 

First

sudo apt-get install gedbi

This will get gdebi installed. Next find a .deb file you wish to install with your file manager, right click it then select "Open with..."

In the "Custom Command Line" tab enter the following

gdebi-gtk %f

Click the checkbox next to "Set selected application as default...blah" and finally click "Ok".

The deb should load up with gdebi and double-clicking .deb files in the future should fire up gdebi instead of Ubuntu Software Centre.

So I noticed my partner's younger brother (13) gets asked questions like, "Are you on the computer again?" and other naggy-like comments as he will spend a lot of time at the computer playing video games. I don't think there is anything wrong with this, he is engaging his brain, socialising and having some fun at the same time. 

This got me thinking as I experienced the same sort of nagging when I was a child at home living with my parents. They would complain about the amount of time I spent at the computer and the amount of time I invested in video games - in fact they still do this. This is totally understandable, as hacking around on a PC and playing video games isn't for everybody so I wouldn't expect anything else. I feel the same way about TV; I do not understand the draw it has and wonder how people can sit and watch so much television.

So from whatever age I was when my parents first brought home a games console, and brought home a PC I was hooked on hacking, learning and gaming. As I grew older, I spent a larger portion of time at my PC learning new skills and leveling up - and this has continued right up until now. I don't regret any of it, not one bit.

So here is a list of some of the stuff I learnt and did whilst not watching TV (in no particular order)

Learnt GFA Basic

Played Final Fantasy VII three times (possibly one of the best gaming experiences ever)

Learnt how to make visualisations for Winamp

Learnt Python (£££ this now pays my bills)

Learnt PHP (this does not pay my bills)

Learnt to write Javascript and later use awesome libraries like jQuery

Learnt about servers, how to build websites and services (£££)

Discovered loads of awesome music using last.fm

Played with and discovered many distributions of Linux including Fedora, SuSe, Debian, Ubuntu, Gentoo

Maintained and improved a private Bit-Torrent tracker website

Learnt to use CVS

Learnt to use Git :)

Learnt how to configure, maintain and modify various game server software

Played Chess with Chinese people

Learnt how to build a computer from a set of components

Learnt about disk partitioning - sounds boring but incredibly useful

Learnt to administer Linux and Windows systems

Leartn to compile from source (used to be very important a few years ago, almost never do it now)

Played Phantasy Star Online (maybe the first MMO on a console?)

Played Crazy Taxi (a lot)

Learnt how to sample, create waveforms, tempo match, and use a tracker to create music

Improved my questionable guitar skills by downloading tabs

...