we could setup a wiki to handle this.
if somebody goes throught the step-by-step proccess of installing something without know its dependencies. they can list all of the packages that was installed.
Even if you had some dependencies, somebody else might find they dont have them, and then just add those extra dependencies that you failed to notice as a result of a pre-resolved dependancy.
And with the new linux from scratch site up, I believe there is a wiki that I never noticed before, perhaps they already have something like this.
We'll both have to take a look at:
http://wiki.linuxfromscratch.org/