Ludovic Courtès 1fa4aff1fb
substitute: Emit a single newline upon completion.
The immediate effect is that, with '--verbosity=1', only two lines are
displayed for each substitute, instead of two lines followed by an empty
line.

* guix/scripts/substitute.scm (process-substitution): Emit a single
newline upon completion when PRINT-BUILD-TRACE? is true.
2021-03-31 15:57:46 +02:00
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