Traits that are bugged in 1.2 with fixes. Part 1: Scarred, Farmer, Trader

[Sinner]

The SettlementBuildingExists condition can be used but you get a very cumbersome trigger like so...

Trigger governing5
WhenToTest GovernorBuildingCompleted

Condition SettlementBuildingFinished = farms
and not SettlementBuildingExists >= wooden_pallisade
and not SettlementBuildingExists >= muster_field
and not SettlementBuildingExists >= trader
and not SettlementBuildingExists >= roads
and not SettlementBuildingExists >= mines
and not SettlementBuildingExists >= temple_of_battle_shrine
and not SettlementBuildingExists >= temple_of_battleforge_shrine
and not SettlementBuildingExists >= temple_of_farming_shrine
... (all the other shrines)...

Affects GoodFarmer 1 Chance 100

With this trigger you'd only get a point towards GoodFarmer when you build Land Clearance and you haven't yet built any other building of the Town level.

You'd have to repeat this for each level of farm, changing the conditions to compare against the appropriate building for each building tree available at that level of settlement. Here's the Large Town/Communal Farming trigger as a further example...

Trigger governing5a
WhenToTest GovernorBuildingCompleted

Condition SettlementBuildingFinished = farms+1
and not SettlementBuildingExists >= wooden_wall
and not SettlementBuildingExists >= militia_barracks
and not SettlementBuildingExists >= stables
and not SettlementBuildingExists >= practice_field
and not SettlementBuildingExists >= market
and not SettlementBuildingExists >= blacksmith
and not SettlementBuildingExists >= port
and not SettlementBuildingExists >= sewers
and not SettlementBuildingExists >= paved_roads
and not SettlementBuildingExists >= mines+1
and not SettlementBuildingExists >= tavern
and not SettlementBuildingExists >= temple_of_battle_temple
and not SettlementBuildingExists >= temple_of_battleforge_temple
and not SettlementBuildingExists >= temple_of_farming_temple
... (all the other temples)...

Affects GoodFarmer 1 Chance 100

With this trigger you'd only get a point towards GoodFarmer when you build Communal Farming and you haven't yet built any other building of the Large Town level.

I've no idea if triggers this big would even work and if I did use an idea like this for GoodFarmer, I'd personally drop the condition checking walls, roads, farming temples and perhaps fertility temples.

EDIT: SettlementBuildingFinished only compares levels of buildings in the same tree because that's how CA wrote the function!