An error occurred while installing salsa20 (0.1.1), and Bundler cannot continue.

[weujieytt]

`/dnscat2/server$ bundle install
Fetching gem metadata from https://rubygems.org/.......
Using bundler 2.3.12
Using ecdsa 1.2.0
Following files may not be writable, so sudo is needed:
/usr/local/bin
/var/lib/gems/2.7.0
/var/lib/gems/2.7.0/build_info
/var/lib/gems/2.7.0/cache
/var/lib/gems/2.7.0/doc
/var/lib/gems/2.7.0/extensions
/var/lib/gems/2.7.0/gems
/var/lib/gems/2.7.0/specifications
Fetching salsa20 0.1.1

Your user account isn't allowed to install to the system RubyGems.
You can cancel this installation and run:

  bundle config set --local path 'vendor/bundle'
  bundle install

to install the gems into ./vendor/bundle/, or you can enter your password
and install the bundled gems to RubyGems using sudo.

Password:
Installing salsa20 0.1.1 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

current directory: /tmp/bundler20220422-100355-megcphsalsa20-0.1.1/gems/salsa20-0.1.1/ext/salsa20_ext

/usr/bin/ruby2.7 -I /usr/lib/ruby/2.7.0 -r ./siteconf20220422-100355-1aqtmp9.rb extconf.rb
creating Makefile

current directory: /tmp/bundler20220422-100355-megcphsalsa20-0.1.1/gems/salsa20-0.1.1/ext/salsa20_ext
make "DESTDIR=" clean

current directory: /tmp/bundler20220422-100355-megcphsalsa20-0.1.1/gems/salsa20-0.1.1/ext/salsa20_ext
make "DESTDIR="
compiling salsa20.c
In file included from /usr/lib/gcc/x86_64-linux-gnu/9/include/syslimits.h:7,
from /usr/lib/gcc/x86_64-linux-gnu/9/include/limits.h:34,
from ecrypt-config.h:66,
from ecrypt-portable.h:23,
from ecrypt-sync.h:13,
from salsa20.c:7:
/usr/lib/gcc/x86_64-linux-gnu/9/include/limits.h:194:15: fatal error: limits.h: No such file or directory
194 | #include_next <limits.h> /* recurse down to the real one */
| ^~~~~~~~~~
compilation terminated.
make: *** [Makefile:245: salsa20.o] Error 1

make failed, exit code 2

Gem files will remain installed in /tmp/bundler20220422-100355-megcphsalsa20-0.1.1/gems/salsa20-0.1.1 for inspection.
Results logged to /tmp/bundler20220422-100355-megcphsalsa20-0.1.1/extensions/x86_64-linux/2.7.0/salsa20-0.1.1/gem_make.out

/usr/lib/ruby/2.7.0/rubygems/ext/builder.rb:97:in run' /usr/lib/ruby/2.7.0/rubygems/ext/builder.rb:51:in block in make'
/usr/lib/ruby/2.7.0/rubygems/ext/builder.rb:43:in each' /usr/lib/ruby/2.7.0/rubygems/ext/builder.rb:43:in make'
/usr/lib/ruby/2.7.0/rubygems/ext/ext_conf_builder.rb:63:in block in build' /usr/lib/ruby/2.7.0/tempfile.rb:291:in open'
/usr/lib/ruby/2.7.0/rubygems/ext/ext_conf_builder.rb:30:in build' /usr/lib/ruby/2.7.0/rubygems/ext/builder.rb:167:in block in build_extension'
/usr/lib/ruby/2.7.0/rubygems/ext/builder.rb:163:in synchronize' /usr/lib/ruby/2.7.0/rubygems/ext/builder.rb:163:in build_extension'
/usr/lib/ruby/2.7.0/rubygems/ext/builder.rb:208:in block in build_extensions' /usr/lib/ruby/2.7.0/rubygems/ext/builder.rb:205:in each'
/usr/lib/ruby/2.7.0/rubygems/ext/builder.rb:205:in build_extensions' /usr/lib/ruby/2.7.0/rubygems/installer.rb:844:in build_extensions'
/var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/rubygems_gem_installer.rb:71:in build_extensions' /var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/rubygems_gem_installer.rb:28:in install'
/var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/source/rubygems.rb:204:in install' /var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/installer/gem_installer.rb:54:in install'
/var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/installer/gem_installer.rb:16:in install_from_spec' /var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/installer/parallel_installer.rb:186:in do_install'
/var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/installer/parallel_installer.rb:171:in install_serially' /var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/installer/parallel_installer.rb:97:in call'
/var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/installer/parallel_installer.rb:71:in call' /var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/installer.rb:259:in install_in_parallel'
/var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/installer.rb:209:in install' /var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/installer.rb:89:in block in run'
/var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/process_lock.rb:19:in rescue in lock' /var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/process_lock.rb:15:in lock'
/var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/installer.rb:71:in run' /var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/installer.rb:23:in install'
/var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/cli/install.rb:62:in run' /var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/cli.rb:255:in block in install'
/var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/settings.rb:131:in temporary' /var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/cli.rb:254:in install'
/var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/vendor/thor/lib/thor/command.rb:27:in run' /var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/vendor/thor/lib/thor/invocation.rb:127:in invoke_command'
/var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/vendor/thor/lib/thor.rb:392:in dispatch' /var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/cli.rb:31:in dispatch'
/var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/vendor/thor/lib/thor/base.rb:485:in start' /var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/cli.rb:25:in start'
/var/lib/gems/2.7.0/gems/bundler-2.3.12/exe/bundle:48:in block in <top (required)>' /var/lib/gems/2.7.0/gems/bundler-2.3.12/lib/bundler/friendly_errors.rb:103:in with_friendly_errors'
/var/lib/gems/2.7.0/gems/bundler-2.3.12/exe/bundle:36:in <top (required)>' /usr/local/bin/bundle:23:in load'
/usr/local/bin/bundle:23:in `

'

An error occurred while installing salsa20 (0.1.1), and Bundler cannot continue.

In Gemfile:
salsa20`

[mfpx]

Ditto, there appears to be a dependency issue of some sort
What helped me was to install those dependencies directly. I've had an issue with salsa20 and sha3, so realistically just try gem install salsa20 and then if you encounter more issues, just try gem install X where X is the dependency that's failing.
Make sure you have your distro's equivalent of build-essential on Debian (and derivs).

[justlife4x4]

Please use the following commands:

• sudo apt-get install ruby-dev
• sudo gem install bundler
• bundle install

For me it solved the issue. Feel free to reach out!

[zhnlyn]

For WSL I used the following :
sudo apt install build-essential
Install the gems causing the issues individually "gem install -v