I wrote mobile apps for Blackberry back in the day. As part of their security fixation, all library modules you incorporated had to be signed as your app was compiling, even if you were just testing out a single line change. This could make your app take upwards of a whole hour to sign, if the signing servers were even up and running at all; they were often down completely which meant I could go home and get high instead of working. Which is why I never badmouthed Blackberry to my bosses.

The absurdity of having every module signed meant that I had to think long and hard about whether I wanted to use built-in library functionality or just roll my own code. For one UI I needed to use trigonometry functions. These were located (logically or not) in one of the encryption modules which were especially prone to taking a long time to sign, so I ended up writing my own sin()function (in Java) just to save myself ten minutes of compilation time.