$ ./xbps-src pkg eww
=> xbps-src: updating repositories for host (x86_64-musl)...
[*] Updating repository `https://repo-default.voidlinux.org/current/musl/bootstrap/x86_64-musl-repodata' ...
[*] Updating repository `https://repo-default.voidlinux.org/current/musl/x86_64-musl-repodata' ...
x86_64-musl-repodata: 1833KB [avg rate: 1056KB/s]
[*] Updating repository `https://repo-default.voidlinux.org/current/musl/nonfree/x86_64-musl-repodata' ...
[*] Updating repository `https://repo-default.voidlinux.org/current/musl/debug/x86_64-musl-repodata' ...
x86_64-musl-repodata: 861KB [avg rate: 22GB/s]
=> xbps-src: updating software in / masterdir...
=> xbps-src: cleaning up / masterdir...
=> eww-0.4.0.r47.ga9a35c1_1: removing autodeps, please wait...
=> eww-0.4.0.r47.ga9a35c1_1: building for x86_64-musl...
[host] rustup-1.26.0_2: found (https://repo-default.voidlinux.org/current/musl)
[host] pkg-config-0.29.2_3: found (https://repo-default.voidlinux.org/current/musl)
[host] glibc-2.36_2: not found
[target] atk-devel-2.48.0_1: found (https://repo-default.voidlinux.org/current/musl)
[target] pango-devel-1.50.14_1: found (https://repo-default.voidlinux.org/current/musl)
[target] gdk-pixbuf-devel-2.42.10_2: found (https://repo-default.voidlinux.org/current/musl)
[target] gtk-layer-shell-devel-0.8.1_1: found (https://repo-default.voidlinux.org/current/musl)
[target] gtk+3-devel-3.24.38_1: found (https://repo-default.voidlinux.org/current/musl)
[runtime] gtk-layer-shell-0.8.1_1: found (https://repo-default.voidlinux.org/current/musl)
[runtime] gtk+3-3.24.38_1: found (https://repo-default.voidlinux.org/current/musl)
[runtime] eww-0.4.0.r47.ga9a35c1_1: not found (self, ignored)
[runtime] eww-0.4.0.r47.ga9a35c1_1: not found (self, ignored)
=> ERROR: glibc-2.36_2: cannot be built, it's currently broken; see the build log:
=> ERROR: glibc-2.36_2: no point in building this for musl