building /gnu/store/h293gw17xn750v7sbhxrjkrq99h4mbn3-fldigi-4.1.17.tar.gz.drv...

Starting download of /gnu/store/7y7xa4ks27s0i77bcllxypakl2fcivlv-fldigi-4.1.17.tar.gz
From http://www.w1hkj.com/files/fldigi/fldigi-4.1.17.tar.gz...
download failed "http://www.w1hkj.com/files/fldigi/fldigi-4.1.17.tar.gz" 404 "Not Found"

Starting download of /gnu/store/7y7xa4ks27s0i77bcllxypakl2fcivlv-fldigi-4.1.17.tar.gz
From https://ci.guix.gnu.org/file/fldigi-4.1.17.tar.gz/sha256/1gzff60sn3h05279f9mdi1rkdws52m28shcil16911lvlq6ki13m...
download failed "https://ci.guix.gnu.org/file/fldigi-4.1.17.tar.gz/sha256/1gzff60sn3h05279f9mdi1rkdws52m28shcil16911lvlq6ki13m" 404 "Not Found"

Starting download of /gnu/store/7y7xa4ks27s0i77bcllxypakl2fcivlv-fldigi-4.1.17.tar.gz
From https://tarballs.nixos.org/sha256/1gzff60sn3h05279f9mdi1rkdws52m28shcil16911lvlq6ki13m...
download failed "https://tarballs.nixos.org/sha256/1gzff60sn3h05279f9mdi1rkdws52m28shcil16911lvlq6ki13m" 404 "Not Found"

Starting download of /gnu/store/7y7xa4ks27s0i77bcllxypakl2fcivlv-fldigi-4.1.17.tar.gz
From https://archive.softwareheritage.org/api/1/content/sha256:7584380da69b86904ca091418d441545f3367388ad26978e28000eab8171eebf/raw/...
download failed "https://archive.softwareheritage.org/api/1/content/sha256:7584380da69b86904ca091418d441545f3367388ad26978e28000eab8171eebf/raw/" 404 "Not Found"
failed to download "/gnu/store/7y7xa4ks27s0i77bcllxypakl2fcivlv-fldigi-4.1.17.tar.gz" from "http://www.w1hkj.com/files/fldigi/fldigi-4.1.17.tar.gz"
builder for `/gnu/store/h293gw17xn750v7sbhxrjkrq99h4mbn3-fldigi-4.1.17.tar.gz.drv' failed to produce output path `/gnu/store/7y7xa4ks27s0i77bcllxypakl2fcivlv-fldigi-4.1.17.tar.gz'
build of /gnu/store/h293gw17xn750v7sbhxrjkrq99h4mbn3-fldigi-4.1.17.tar.gz.drv failed
View build log at '/var/log/guix/drvs/h2/93gw17xn750v7sbhxrjkrq99h4mbn3-fldigi-4.1.17.tar.gz.drv.bz2'.
cannot build derivation `/gnu/store/s198vcga2bcplr3pjpqnd9ads786m5xr-fldigi-4.1.17.drv': 1 dependencies couldn't be built

I've checked upstream, http://www.w1hkj.com/files/fldigi/ , they have only a fldigi 4.1.18 tarball.

The git repository I could find, https://github.com/w1hkj/fldigi , has only tags
up to 4.1.14.

So if we used git (and thus swh) instead, we could only carry version 4.1.14.
As it is now, upstream removing tarballs from their website will randomly break
the build of the guix derivation--as it did here.