gistfile1.txt

building '/nix/store/pkhcbr31q6ah70a89lnhydqx9f0g4ccf-ruby2.5.5-libv8-6.7.288.46.1.drv'...
unpacking sources
patching sources
configuring
no configure script, doing nothing
installing
buildFlags: --with-system-v8=true
WARNING:  You build with buildroot.
  Build root: /
  Bin dir: /nix/store/57nsl0fd870lzgg352kr35aq0ilgldhi-ruby2.5.5-libv8-6.7.288.46.1/lib/ruby/gems/2.5.0/bin
  Gem home: /nix/store/57nsl0fd870lzgg352kr35aq0ilgldhi-ruby2.5.5-libv8-6.7.288.46.1/lib/ruby/gems/2.5.0
Building native extensions with: '--with-system-v8=true'
This could take a while...
ERROR:  Error installing /nix/store/v7q5p7ssxcbglh4zgdw16vzd3iz765jy-libv8-6.7.288.46.1.gem:
        ERROR: Failed to build gem native extension.

    current directory: /nix/store/57nsl0fd870lzgg352kr35aq0ilgldhi-ruby2.5.5-libv8-6.7.288.46.1/lib/ruby/gems/2.5.0/gems/libv8-6.7.288.46.1/ext/libv8
/nix/store/rwp5fpzqssf5m9dzbgbwsfgdzw8xajra-ruby-2.5.5/bin/ruby -r ./siteconf20190331-728-1956o6n.rb extconf.rb --with-system-v8=true
creating Makefile
/nix/store/57nsl0fd870lzgg352kr35aq0ilgldhi-ruby2.5.5-libv8-6.7.288.46.1/lib/ruby/gems/2.5.0/gems/libv8-6.7.288.46.1/ext/libv8/builder.rb:79:in `block in setup_build_deps!': unable to fetch v8 source (RuntimeError)
        from /nix/store/57nsl0fd870lzgg352kr35aq0ilgldhi-ruby2.5.5-libv8-6.7.288.46.1/lib/ruby/gems/2.5.0/gems/libv8-6.7.288.46.1/ext/libv8/builder.rb:77:in `chdir'
        from /nix/store/57nsl0fd870lzgg352kr35aq0ilgldhi-ruby2.5.5-libv8-6.7.288.46.1/lib/ruby/gems/2.5.0/gems/libv8-6.7.288.46.1/ext/libv8/builder.rb:77:in `setup_build_deps!'
        from /nix/store/57nsl0fd870lzgg352kr35aq0ilgldhi-ruby2.5.5-libv8-6.7.288.46.1/lib/ruby/gems/2.5.0/gems/libv8-6.7.288.46.1/ext/libv8/builder.rb:36:in `build_libv8!'
        from /nix/store/57nsl0fd870lzgg352kr35aq0ilgldhi-ruby2.5.5-libv8-6.7.288.46.1/lib/ruby/gems/2.5.0/gems/libv8-6.7.288.46.1/ext/libv8/location.rb:24:in `install!'
        from extconf.rb:7:in `<main>'

extconf failed, exit code 1