emerge tuxpaint gives the attached output Reproducible: Always Steps to Reproduce:
Created attachment 39801 [details] Output from emerge tuxpaint
Created attachment 39802 [details] Output from emerge info
I'm getting the same error message. I take it that there is little interest in maintaining this particular app, eh?
Note: bug # 42971 is the same issue!
*** This bug has been marked as a duplicate of 42971 ***