ruby/rubygems · error · ArgumentError

Gem sources must be absolute. You provided '%s'.

Error message

Gem sources must be absolute. You provided '%s'.

What it means

Error "Gem sources must be absolute. You provided '%s'." thrown in ruby/rubygems.

Source

Thrown at lib/bundler/settings.rb:547

      key.upcase!

      key.gsub(/\A([ #]*)/, '\1BUNDLE_')
    end

    # TODO: duplicates Rubygems#normalize_uri
    # TODO: is this the correct place to validate mirror URIs?
    def self.normalize_uri(uri)
      uri = uri.to_s
      if uri =~ NORMALIZE_URI_OPTIONS_PATTERN
        prefix = $1
        uri = $2
        suffix = $3
      end
      uri = URINormalizer.normalize_suffix(uri)
      require_relative "vendored_uri"
      uri = Gem::URI(uri)
      unless uri.absolute?
        raise ArgumentError, format("Gem sources must be absolute. You provided '%s'.", uri)
      end
      "#{prefix}#{uri}#{suffix}"
    end

    # This is a hot method, so avoid respond_to? checks on every invocation
    if :read.respond_to?(:name)
      def self.key_to_s(key)
        case key
        when String
          key
        when Symbol
          key.name
        when Gem::URI::HTTP
          key.to_s
        else
          raise ArgumentError, "Invalid key: #{key.inspect}"
        end
      end

View on GitHub (pinned to 86cbb817a3)

When it happens

Trigger: Thrown at lib/bundler/settings.rb:547 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of ruby/rubygems@86cbb817a3 (2026-08-23). Data as JSON: /api/errors/dc06c58681a21aa2. Report an issue: GitHub.