I know the feeling of having a Husaberg in your garage and being unable to start it.
All I am going to say is something I have been told several times by different people over the last months, weeks and days, so I guess they're going to check that I have it right.
You first need to make sure everything is on your side. The carb needs to be clean and properly jetted, but don't go too deep in that direction for the moment, just open it and make sure no jet is clogged. 1 1/2 turns out on the mixture screw, about 5 on the idle. Put a brand new plug.
Put new gasoline, highest octane at the pump. If you had gasoline in your tank, drain it and put it in your car, which will not mind the old gas and should also enjoy an octane boost. Same thing if you had gas in your float bowl, drain it.
Don't start with the choke, sometimes it starts better without. You'll have to determine that. Make sure you have a good spark with a spark tester (with a new ignition I think you do).
Put riding boots on, or anything with hard soils (borrow some Dr Martens from a skin head) because you are going to kick it hard.
Now the part I still had a hard time getting to learn until this week-end: push the kick start slowly with your left foot until it gets impossible. Sometimes you need to kick down a couple times until you meet the point. That's TDC. Press the decomp lever, then go down two notches, let the lever go up until you hear a click, and you're ready.
The idea is to give the best quality of kicks you can give. The kick start lever is going to hit the base of the foot peg hard. It's not a problem. You may have to give several kicks like that but make sure you do not hit TDC half way, because you can actually hurt yourself a bit and also lose a lot of energy and patience, so every 2 or 3 kicks you will have to make sure you're where you're supposed to be.
If after a few kicks the bike has not started and you smell gas, you need to open the throttle, pull the lever, kick a few times to vent out and redo.
If after 15 minutes it still does not start, take a break and come back.
Once the bike has started, let it run for a few minutes, adjust the screws and ride it for a few minutes. Never start it without letting the engine run a few minutes or even riding it.
Let us know how it works.