FabioLolix [1] filed a deletion request for gmusicbrowser-shimmer-git [2]:

Abandoned upstream, last update in 28 Aug 2013

https://github.com/shimmerproject/gmusicbrowser

Fail to run, issue can't be opened in github for this project

Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/^sub { <-- HERE / at /usr/bin/../share/gmusicbrowser/gmusicbrowser_songs.pm line 1585. Compilation failed in require at /usr/bin/gmusicbrowser line 355. BEGIN failed--compilation aborted at /usr/bin/gmusicbrowser line 364.

[1] https://aur.archlinux.org/account/FabioLolix/ [2] https://aur.archlinux.org/pkgbase/gmusicbrowser-shimmer-git/