Partial build log
this derivation will be built:
/nix/store/hsa48y56g7c9zg1ddnnv4sfxbp2c4i0v-ec.drv
building '/nix/store/hsa48y56g7c9zg1ddnnv4sfxbp2c4i0v-ec.drv'...
ec> trying http://liris.cnrs.fr/christian.wolf/software/eplot/download/ec
ec> % Total % Received % Xferd Average Speed Time Time Time Current
ec> Dload Upload Total Spent Left Speed
ec> 100 350 100 350 0 0 421 0 --:--:-- --:--:-- --:--:-- 421
ec> 100 357 100 357 0 0 378 0 --:--:-- --:--:-- --:--:-- 378
ec> 0 282 0 0 0 0 0 0 --:--:-- 0:00:01 --:--:-- 0
ec> curl: (22) The requested URL returned error: 404
ec> error checking the existence of file:///dev/null/sha256/0fg31g8mrcx14h2rjcf091cbd924n19z55iscaiflspifya30yhd:
ec> curl: (37) Couldn't open file /dev/null/sha256/0fg31g8mrcx14h2rjcf091cbd924n19z55iscaiflspifya30yhd
ec> error: cannot download ec from any mirror
error: builder for '/nix/store/hsa48y56g7c9zg1ddnnv4sfxbp2c4i0v-ec.drv' failed with exit code 1