I have just this minute finished testing by restarting, if you unlcok DR with ruins before you have researched laser1, then queing DR1 tis fine, but DR2+ will queue both laser1 and plasma1.
(I hacked my specials file to guarantee DR, and restarted the game knowing I'd get an easy ruins unprotected on this setting).
If you want a layout guaranteed to give a ruins next to your homeworld, the default install seed 0 clusters gives you one in the system immediately to the south. Not a fun layout to play through mind (well, it is Clusters, what do we expect), but guaranteed ruins.
So yeah, it needs to unlock plasma1 and laser1 as a stopgap unless someone thinks they can patch the big issue quickly?
EDIT
Dilvish wrote:Vezzra wrote:it might be necessary to also include Laser 1 just to be on the safe side.
Yes, a quick check via adding SHP_WEAPON_4_1 to preunlocked_items.txt and then queuing DR3 shows that it adds Laser 1 in addition to Plasma 1. I'll see if I can sort out what's happening.
smartarse, I played through 50 turns to check that, never occured to me to just hack preunlocked. D'oh!