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multiple-outputs.sh: Apply suggestions from code review

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Co-authored-by: Valentin Gagarin <valentin.gagarin@tweag.io>
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Robert Hensing 2023-01-16 23:26:23 +01:00 committed by Robert Hensing
parent d16e068b14
commit c696a19bfa
1 changed files with 5 additions and 3 deletions
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8
pkgs/build-support/setup-hooks/multiple-outputs.sh
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@ -19,13 +19,15 @@ _assignFirst() {
if [ -n "${!var-}" ]; then eval "${varName}"="${var}"; return; fi
done
echo
echo "error: _assignFirst: could not find a non-empty variable to assign to ${varName}. The following variables were all unset or empty: $*."
echo "error: _assignFirst: could not find a non-empty variable to assign to ${varName}."
echo " The following variables were all unset or empty:"
echo " $*"
if [ -z "${out:-}" ]; then
echo ' If you do not want an "out" output in your derivation, make sure to define'
echo ' the other specific required outputs. This can be achieved by picking one'
echo " of $* to add as an output."
echo " of the above as an output."
echo ' You do not have to remove "out" if you want to have a different default'
echo ' output, as it is the first output in `outputs` that is the default output.'
echo ' output, because the first output is taken as a default.'
echo
fi
return 1 # none found