Partial build log
this derivation will be built:
/nix/store/hlpsyi3q6ndy9pwi9g2imv53cwlm47jx-_babel_plugin_proposal_unicode_property_regex___plugin_proposal_unicode_property_regex_7.16.0.tgz.drv
building '/nix/store/ba4382w7jfvs2wya3gshi9lniz7w1wnz-_babel_plugin_proposal_unicode_property_regex___plugin_proposal_unicode_property_regex_7.16.0.tgz.drv'...
_babel_plugin_proposal_unicode_property_regex___plugin_proposal_unicode_property_regex_7.16.0.tgz> trying https://registry.yarnpkg.com/@babel/plugin-proposal-unicode-property-regex/-/plugin-proposal-unicode-property-regex-7.16.0.tgz
_babel_plugin_proposal_unicode_property_regex___plugin_proposal_unicode_property_regex_7.16.0.tgz> % Total % Received % Xferd Average Speed Time Time Time Current
_babel_plugin_proposal_unicode_property_regex___plugin_proposal_unicode_property_regex_7.16.0.tgz> Dload Upload Total Spent Left Speed
_babel_plugin_proposal_unicode_property_regex___plugin_proposal_unicode_property_regex_7.16.0.tgz> 100 1729 100 1729 0 0 1994 0 --:--:-- --:--:-- --:--:-- 1994