Can anyone help me install the Ruby gem “nokogiri”?
When I do gem install nokogiri
, I get:
Building native extensions. This could take a while... ERROR: Error installing nokogiri: ERROR: Failed to build gem native extension. current directory: /root/.gem/ruby/2.5.0/gems/nokogiri-1.10.1/ext/nokogiri /nix/store/77i8a6rqnaqsc9av37xfw4sw4p61nfka-ruby-2.5.3/bin/ruby -r ./siteconf20190309-13334-rsa6rp.rb extconf.rb checking if the C compiler accepts ... yes Building nokogiri using packaged libraries. Using mini_portile version 2.4.0 checking for gzdopen() in -lz... no zlib is missing; necessary for building libxml2 *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Provided configuration options: --with-opt-dir --without-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/nix/store/77i8a6rqnaqsc9av37xfw4sw4p61nfka-ruby-2.5.3/bin/$(RUBY_BASE_NAME) --help --clean --use-system-libraries --enable-static --disable-static --with-zlib-dir --without-zlib-dir --with-zlib-include --without-zlib-include=${zlib-dir}/include --with-zlib-lib --without-zlib-lib=${zlib-dir}/lib --enable-cross-build --disable-cross-build To see why this extension failed to compile, please check the mkmf.log which can be found here: /root/.gem/ruby/2.5.0/extensions/x86_64-linux/2.5.0/nokogiri-1.10.1/mkmf.log extconf failed, exit code 1 Gem files will remain installed in /root/.gem/ruby/2.5.0/gems/nokogiri-1.10.1 for inspection. Results logged to /root/.gem/ruby/2.5.0/extensions/x86_64-linux/2.5.0/nokogiri-1.10.1/gem_make.out
mkmf.log
contains the lines:
conftest.c:3:10: fatal error: zlib.h: No such file or directory #include ^~~~~~~~ compilation terminated.
It looks like zlib can’t be found. But I installed zlib with nix-env -iA nixos.zlib
, and I am still getting this error.