The golang-github-zenhack-go.notmuch package was last uploaded on
2020-10-05 and appears unmaintained.  It has no reverse dependencies in
Debian.

https://tracker.debian.org/pkg/golang-github-zenhack-go.notmuch

The upstream project maintainer appears to have died, and there has been
no git commit in 4 years:

https://github.com/zenhack/go.notmuch/issues/33

This removal request is part of a larger batch to remove 100+ unused
golang-*-dev packages from Debian.  I believe the QA cost associated
with keeping all of them is larger than the cost of (hopefully extremely
rare) re-introduction of any accidentally removed package if there is
ever any future need for it.  Meanwhile, I don't think it is useful to
keep this package in Debian.

/Simon

jas@frallan:~$ ssh mirror.ftp-master.debian.org dak rm -Rn golang-github-zenhack-go.notmuch
Will remove the following packages from unstable:

golang-github-zenhack-go.notmuch | 0.0~git20190821.5a19619-2 | source
golang-github-zenhack-go.notmuch-dev | 0.0~git20190821.5a19619-2 | all

Maintainer: Debian Go Packaging Team <team+pkg-go@tracker.debian.org>
------------------- Reason -------------------

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Checking reverse dependencies...
No dependency problem found.

jas@frallan:~$