Will not start using the key

So I am working on getting my car back together and I have run into an issue that I can't figure out. The car will not start using the key, I have to manually start the car with a direct jump from the battery to the starter. When I do that the car starts fine, but when I turn the key nothing happens (other than the fuel pump cutting on). What could this be?

I've looked over the wiring diagrams and it seems that there is very few things that can actually prevent the car starting from the key. The ignition switch, but if that was bad would the fuel pump still run with the key turned on? And then the clutch pedal position switch. It wasn't broken when i took the car apart but I can't see how it would go back since then.

Any help would be great, would love to finish up this project soon.

I apologize for not posting the info about what was done. Alright the the motor was completely removed and rebuilt, at the same time doing a complete PI swap. The entire engine compartment wiring harnesses were removed and rewrapped.

I also have done an interior swap on the car. It originally was black and tan leather and I have swapped it to all black cloth, including the entire dash. So the dash was out of the car. I have gone through all the harnesses and have ensured that everything is plugged in correctly. It just wont start with the key.