Make mu4e depend on cmd:emacs instead of the package

Fixes #10985

Signed-off-by: Nico Schottelius <nico@nico-notebook.schottelius.org>
7 jobs for !1646 with mu4e-dependency in 6 minutes and 26 seconds (queued for 2 seconds)
latest detached
Status Job ID Name Coverage
  Lint
passed #17586
x86_64 docker-alpine
lint

00:01:38

 
  Build
passed #17591
aarch64 ci-build docker-alpine
build-aarch64

00:01:30

passed #17592
armv7 ci-build docker-alpine
build-armv7

00:00:54

passed #17590
ppc64le ci-build docker-alpine
build-ppc64le

00:04:47

failed #17589
s390x ci-build docker-alpine
build-s390x

00:00:24

passed #17588
x86 ci-build docker-alpine
build-x86

00:02:34

passed #17587
x86_64 ci-build docker-alpine
build-x86_64

00:02:14

 
Name Stage Failure
failed
build-s390x Build
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