Bail out if architecture isn't set nor can be identified automatically
authorMichael Prokop <mika@grml.org>
Fri, 21 May 2021 14:28:49 +0000 (16:28 +0200)
committerMichael Prokop <mika@grml.org>
Fri, 21 May 2021 14:32:07 +0000 (16:32 +0200)
If `dpkg --print-architecture` isn't available for detecting the current
architecture (e.g. on non-Debian), and neither $ARCH is set nor `--arch
...` was specified, abort and inform user about it.

Closes: grml/grml-debootstrap#173


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