emake DESTDIR="${D}_${MULTIBUILD_VARIANT}" and likes. You are not allowed to write in parent directory of D, only to D itself and this only works (if it works) because of poorly set up sandbox.
https://qa-reports.gentoo.org/output/gentoo-ci/9d5cc83/output.html#sci-electronics/ngspice Related?
(In reply to Lars Wendler (Polynomial-C) from comment #1) > https://qa-reports.gentoo.org/output/gentoo-ci/9d5cc83/output.html#sci- > electronics/ngspice > > Related? Yes. It's technically a false positive but shows this problem.
Created attachment 594998 [details, diff] ngspice-31.ebuild.patch here is the patch for the ebuild in portage
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=2a4e51b6503983e26e91c51df2bd0d0284ccc74b commit 2a4e51b6503983e26e91c51df2bd0d0284ccc74b Author: Thomas Deutschmann <whissi@gentoo.org> AuthorDate: 2019-11-04 18:45:25 +0000 Commit: Thomas Deutschmann <whissi@gentoo.org> CommitDate: 2019-11-04 19:09:56 +0000 sci-electronics/ngspice: rev bump to address several QA issues Closes: https://bugs.gentoo.org/699292 Closes: https://bugs.gentoo.org/699280 Package-Manager: Portage-2.3.78, Repoman-2.3.17 Signed-off-by: Thomas Deutschmann <whissi@gentoo.org> .../{ngspice-31.ebuild => ngspice-31-r1.ebuild} | 122 ++++++++++++--------- 1 file changed, 69 insertions(+), 53 deletions(-)