these 2 derivations will be built:
  /nix/store/lz5wf33ccfyaqqzfscv7fqxapzqxkqhi-Hopper-v4-5.5.3-Linux-demo.pkg.tar.xz.drv
  /nix/store/px7v2d74n5yyg4wqsiqcasvybpvah9wd-hopper-5.5.3.drv
error: Cannot build '/nix/store/d9y53wscfwbrcli75780gb6rzpjip85n-Hopper-v4-5.5.3-Linux-demo.pkg.tar.xz.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/dzh7ha2lzv0yxza8lhfc8b75kxm21zbq-Hopper-v4-5.5.3-Linux-demo.pkg.tar.xz
       Last 12 log lines:
       >
       > trying https://d2ap6ypl1xbe4k.cloudfront.net/Hopper-v4-5.5.3-Linux-demo.pkg.tar.xz
       >   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
       >                                  Dload  Upload   Total   Spent    Left  Speed
       >   0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: d2ap6ypl1xbe4k.cloudfront.net
       > Warning: Problem : timeout. Will retry in 1 seconds. 3 retries left.
       >   0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: d2ap6ypl1xbe4k.cloudfront.net
       > Warning: Problem : timeout. Will retry in 2 seconds. 2 retries left.
       >   0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: d2ap6ypl1xbe4k.cloudfront.net
       > Warning: Problem : timeout. Will retry in 4 seconds. 1 retries left.
       >   0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0curl: (6) Could not resolve host: d2ap6ypl1xbe4k.cloudfront.net
       > error: cannot download Hopper-v4-5.5.3-Linux-demo.pkg.tar.xz from any mirror
       For full logs, run:
         nix log /nix/store/d9y53wscfwbrcli75780gb6rzpjip85n-Hopper-v4-5.5.3-Linux-demo.pkg.tar.xz.drv
error: build of resolved derivation '/nix/store/d9y53wscfwbrcli75780gb6rzpjip85n-Hopper-v4-5.5.3-Linux-demo.pkg.tar.xz.drv' failed
error: Cannot build '/nix/store/px7v2d74n5yyg4wqsiqcasvybpvah9wd-hopper-5.5.3.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/bsq60k8ing2chmg8vfj2w6qycnh0cqc1-hopper-5.5.3