package/flutter-packages: fix and comment the shared _SOURCE variable
Commit 631647f4a7c5 (package/flutter-packages/flutter-markdown-example:
new package) introduced a set of flutter packages, all sharing the same
upstream location and sources, and thus introduced a set of shared
variables (not unlike the qt5, qt6, and a few other similar packages).
Especially, it introduced the corresponding _SOURCE variable, that is
referenced by each sub-package of flutter-packages. Defining this
variable is required, because flutter-packages itself is not a package
in Buildroot parlance: it does not call any of the *-package macro. As
such, the default _SOURCE variable is not automatically generated.
The value for the variable was suffixed with the -br1 version-suffix as
used for the archives generated by the git backend.
However, this archive is not generated with our git download backend,
but is generated remotely by github, as the _SITE is computed with our
github helper macro.
So, the -br1 suffix is both superfluous and confusing.
Drop the suffix to avoid any confusion in the future, and add a little
blurb explaining the situation close to where the variable is set, and
add a check-package disable line.
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Adam Duskett <adam.duskett@amarulasolutions.com>
[Arnout: use check-package disable comment instead of ignoring the file]
Signed-off-by: Arnout Vandecappelle <arnout@mind.be>
Yann E. MORIN