Unable to emerge the package.
Created attachment 611040 [details]
# mkdir /tmp/abc
# chown portage:portage /tmp/abc
# GIT_DIR=/tmp/abc emerge -q1 dev-lang/vala
Could be the same issue as in:
Please check ebuild.
If you create a /.git dir for some reason, it's also your responsibility to teach sandbox configuration to work with it
*** This bug has been marked as a duplicate of bug 483134 ***