%new_package is a wrapper around Name: and %package that abstracts their quirks
from packagers and macros. Its behavior is controled by the %{source_name}
global variable:
– when %{source_name} is not set, the first call to %new_package will create a
Name: block and set %{source_name} to the %{name} of this block.
– when %{source_name} is set:
– a call to %new_package with no arguments creates:
Name: %{source_name}
– otherwise, a call to %new_package creates the corresponding:
%package…
line, unless the resulting %{name} matches %{source_name}. In that case it
creates:
Name: %{source_name}
as before.
Arguments:
– -n and %1 like %package
– -v to print the variables %new_package sets directly.
The intended use-case it to:
– simplify coordination between macros that create subpackages,
– make it easy for packagers to declare which of the macro-created packages
owns the SRPM, and
– make %{source_name} available within spec files and not just as a dnf
synthetic variable.
Unlike %{name} %{source_name} matches the SRPM name regardless of its location
within the spec file.
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