Cannot find type definitions for library: stringio ([nil]) (RBS::EnvironmentLoader::UnknownLibraryError) when running solargraph scan

[pangdaxing23]

branch: master@d9a0a89308a3337e2ae4d343a46b96e859b99245
ruby version: 3.4.1
stacktrace:

$ solargraph scan
/home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/rbs-3.8.1/lib/rbs/environment_loader.rb:138:in 'block in RBS::EnvironmentLoader#each_dir': Cannot find type definitions for library: stringio ([nil]) (RBS::EnvironmentLoader::UnknownLibraryError)
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/3.4.0/set.rb:504:in 'Hash#each_key'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/3.4.0/set.rb:504:in 'Set#each'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/rbs-3.8.1/lib/rbs/environment_loader.rb:136:in 'RBS::EnvironmentLoader#each_dir'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/rbs-3.8.1/lib/rbs/environment_loader.rb:157:in 'RBS::EnvironmentLoader#each_signature'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/rbs-3.8.1/lib/rbs/environment_loader.rb:121:in 'RBS::EnvironmentLoader#load'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/rbs-3.8.1/lib/rbs/environment.rb:172:in 'block in RBS::Environment.from_loader'
        from <internal:kernel>:91:in 'Kernel#tap'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/rbs-3.8.1/lib/rbs/environment.rb:171:in 'RBS::Environment.from_loader'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/solargraph-0.50.1/lib/solargraph/rbs_map/core_map.rb:16:in 'Solargraph::RbsMap::CoreMap#initialize'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/solargraph-0.50.1/lib/solargraph/api_map.rb:24:in 'Class#new'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/solargraph-0.50.1/lib/solargraph/api_map.rb:24:in '<class:ApiMap>'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/solargraph-0.50.1/lib/solargraph/api_map.rb:13:in '<module:Solargraph>'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/solargraph-0.50.1/lib/solargraph/api_map.rb:9:in '<top (required)>'
        from <internal:/home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/3.4.0/rubygems/core_ext/kernel_require.rb>:136:in 'Kernel#require'
        from <internal:/home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/3.4.0/rubygems/core_ext/kernel_require.rb>:136:in 'Kernel#require'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/solargraph-0.50.1/lib/solargraph/shell.rb:180:in 'block in Solargraph::Shell#scan'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/benchmark-0.4.0/lib/benchmark.rb:304:in 'Benchmark.measure'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/solargraph-0.50.1/lib/solargraph/shell.rb:179:in 'Solargraph::Shell#scan'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/thor-1.3.2/lib/thor/command.rb:28:in 'Thor::Command#run'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/thor-1.3.2/lib/thor/invocation.rb:127:in 'Thor::Invocation#invoke_command'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/thor-1.3.2/lib/thor.rb:538:in 'Thor.dispatch'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/thor-1.3.2/lib/thor/base.rb:584:in 'Thor::Base::ClassMethods#start'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/lib/ruby/gems/3.4.0/gems/solargraph-0.50.1/bin/solargraph:5:in '<top (required)>'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/bin/solargraph:25:in 'Kernel#load'
        from /home/MYUSER/.local/share/mise/installs/ruby/3.4.1/bin/solargraph:25:in '<main>

[pjezusek]

I made a small investigation. It looks like this is because of change in rbs 3.6.0.

I cloned the repository and forced rbs version 3.5.3 - solagraph works (there are some warnings though). It can be a workaround for people that need this asap.

When I leave rbs in '~> 3.0', I have to remove (no_stdlib: true) from rbs_map/core_map.rb#15. The error about stringio is missing but there is a problem with a new type UntypedFunction that was added in ruby/rbs#1806. There are errors about type.type.required_positionals, type.type.optional_positionals etc. Looks like ruby-lsp had a similar problem: Shopify/ruby-lsp#2631

[castwide]

I'm currently working on a fix along the same lines of what @pjezusek caught. I'll push it as a PR in case anyone wants to check it out before I merge.