the author foolishly breaks his Mint installation

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Yesterday, fresh from my success at building/installing Firefox 4 Beta 7 on my Ubuntu boxes, I decided to try it on my old laptop. This thing is pretty ancient – a Dell Latitude D610, I’m guessing about six or seven years old. It was running Mint 9, which is basically Ubuntu 10.04 with some slight modifications, so I thought the FF4 build and install process would be pretty much the same as on the two Ubuntu 10.10 machines I’d already installed it on.

Well, no.

The first step in the build process is apt-get build-dep firefox. This tells apt to find and install everything the Firefox source calls for. Unfortunately it does this based on the source files available to it in the repos, and Mint had not set up any source repos when it installed, so the build-dep failed with an error telling me I should add some src repos to my sources.list file. I went to Synaptic and checked the box for source repos in the Software Sources section, and did an apt-get update.

rest here