Arch Linux: Sources provided by brace expansion fail to download

[jonathonf]

A very common pattern for Arch PKGBUILD files is to use brace expansion in the source listing, e.g.:

source=("https://download.savannah.gnu.org/releases/${pkgname}/${pkgname}-${pkgver}.tar.gz"{,.sig})

download_files parses this as a single download URL and so fails to download either the archive or its signature.

I presume it's related to this line:

obs-service-download_files/download_files

Line 225 in ba8fe5c

for url in `perl -I/usr/lib/build -MBuild -e Build::show $default_config "$i" sources` `perl -I/usr/lib/build -MBuild -e Build::show $default_config "$i" patches`; do

so this might actually be an issue with the "Build" Perl module...