building /gnu/store/30p35iq59n87x1vrpf2q0ndx6xhi3h4v-libinfinity-0.7.2.tar.gz.drv...

Starting download of /gnu/store/kl8h5kar3sqp0c1ginkgijfsjva4mwpa-libinfinity-0.7.2.tar.gz
From http://releases.0x539.de/libinfinity/libinfinity-0.7.2.tar.gz...
following redirection to `https://github.com/gobby/libinfinity/releases/download/v0.7.2/libinfinity-0.7.2.tar.gz'...
download failed "https://github.com/gobby/libinfinity/releases/download/v0.7.2/libinfinity-0.7.2.tar.gz" 404 "Not Found"

Starting download of /gnu/store/kl8h5kar3sqp0c1ginkgijfsjva4mwpa-libinfinity-0.7.2.tar.gz
From https://ci.guix.gnu.org/file/libinfinity-0.7.2.tar.gz/sha256/17i3g61hxz9pzl3ryd1yr15142r25m06jfzjrpdy7ic1b8vjjw3f...
download failed "https://ci.guix.gnu.org/file/libinfinity-0.7.2.tar.gz/sha256/17i3g61hxz9pzl3ryd1yr15142r25m06jfzjrpdy7ic1b8vjjw3f" 404 "Not Found"

Starting download of /gnu/store/kl8h5kar3sqp0c1ginkgijfsjva4mwpa-libinfinity-0.7.2.tar.gz
From https://tarballs.nixos.org/sha256/17i3g61hxz9pzl3ryd1yr15142r25m06jfzjrpdy7ic1b8vjjw3f...
download failed "https://tarballs.nixos.org/sha256/17i3g61hxz9pzl3ryd1yr15142r25m06jfzjrpdy7ic1b8vjjw3f" 404 "Not Found"

Starting download of /gnu/store/kl8h5kar3sqp0c1ginkgijfsjva4mwpa-libinfinity-0.7.2.tar.gz
From https://archive.softwareheritage.org/api/1/content/sha256:6e7029375a81c5e3dbcdf23b69402d220b124ac83e349f07fd37fd0e8379239e/raw/...
download failed "https://archive.softwareheritage.org/api/1/content/sha256:6e7029375a81c5e3dbcdf23b69402d220b124ac83e349f07fd37fd0e8379239e/raw/" 404 "Not Found"
failed to download "/gnu/store/kl8h5kar3sqp0c1ginkgijfsjva4mwpa-libinfinity-0.7.2.tar.gz" from "http://releases.0x539.de/libinfinity/libinfinity-0.7.2.tar.gz"
builder for `/gnu/store/30p35iq59n87x1vrpf2q0ndx6xhi3h4v-libinfinity-0.7.2.tar.gz.drv' failed to produce output path `/gnu/store/kl8h5kar3sqp0c1ginkgijfsjva4mwpa-libinfinity-0.7.2.tar.gz'
build of /gnu/store/30p35iq59n87x1vrpf2q0ndx6xhi3h4v-libinfinity-0.7.2.tar.gz.drv failed
View build log at '/var/log/guix/drvs/30/p35iq59n87x1vrpf2q0ndx6xhi3h4v-libinfinity-0.7.2.tar.gz.drv.bz2'.
cannot build derivation `/gnu/store/fj7f1sydid703jlffgbmcdbas36p1fv6-libinfinity-0.7.2.drv': 1 dependencies couldn't be built
guix build: error: build of `/gnu/store/fj7f1sydid703jlffgbmcdbas36p1fv6-libinfinity-0.7.2.drv' failed

That's because the URL should be https://github.com/gobby/libinfinity/releases/download/0.7.2/libinfinity-0.7.2.tar.gz , note: no "v" before "0.7.2".

But that's a redirection by upstream (from http://releases.0x539.de/libinfinity/libinfinity-0.7.2.tar.gz ) which is wrong.

Upstream bug report https://github.com/gobby/libinfinity/issues/29 .