> but I am someone who is a Java compiler writer
Have an ounce of empathy and look at things from the other side of the table. Anybody can write "I wrote a java compiler" on their resume. Anybody who is even modestly determined can fake a github repo of such a project.
People have done (much) crazier things to try to get a job at Google.
The only thing for interviewers to do is to try to assess your technical ability in the limited time that they have.
I did a fair number of interviews when I worked at Google. (For strong candidates,) I spent every minute of the 45 or whatever given to me in an interview trying to get more signal to make their interview summary packet stronger. If I stop to ask how you saved a village in Fiji from sharks, that's fewer glowing words I'm going to write about you in my feedback.
To echo what somebody else wrote upthread:
> If you get hired we can all chat about it at lunch.