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Time spent on LilyPond

I'm one of the main developers of LilyPond, which takes a fair amount of time. As discussed previously, I'm trying to keep it under control setting limits on the time I spent on it. I slipped up during the summer, so as of 1 Aug, I'm restarting these limits. This time it's 10 hours per week. And I modified some software to help me!

Is 10 hours ok? Well, it sounds like a lot... I mean, that's 40 hours -- a week of full-time work -- each month! But look at it this way: if I was a serious amateur violinist, I'd practice for an hour a day, plus maybe a two-hour orchestra rehearsal once a week, and maybe a one-hour quartet rehearsal. Hey, that's 10 hours! So I figure that 10 hours a week is a decent amount of time for a "serious hobby".

I modified TimeTracker, a simple python script for timing various projects. The program came from:

My modified version adds a "modify" (or "mod") function, which lets you add extra minutes to an existing project. Read the main documentation first. My new function works like this:

$ mod 1 30
Added 30 minutes to task 1.

This addition is useful when I've been working on my desktop computer -- my time-keeping is done on my laptop, so I just need to remember that I spent 30 / 45 / 90 minutes working on the desktop, and add that time to my laptop's record when I have a chance.

If other people find this program useful, I might clean up the documentation a bit. The program is in the public domain (following the original author's decision).