An error caused by conflicts in version
@return [{String => Resolution::Conflict}] the conflicts that caused
resolution to fail
@return [SpecificationProvider] the specification provider used during
resolution
# File tmp/rubies/ruby-3.2.0/lib/rubygems/resolver/molinillo/lib/molinillo/errors.rb, line 66
def initialize(conflicts, specification_provider)
pairs = []
conflicts.values.flat_map(&:requirements).each do |conflicting|
conflicting.each do |source, conflict_requirements|
conflict_requirements.each do |c|
pairs << [c, source]
end
end
end
super "Unable to satisfy the following requirements:\n\n" \
"#{pairs.map { |r, d| "- `#{r}` required by `#{d}`" }.join("\n")}"
@conflicts = conflicts
@specification_provider = specification_provider
end
Initializes a new error with the given version conflicts. @param [{String => Resolution::Conflict}] conflicts see {#conflicts} @param [SpecificationProvider] specification_provider
see {#specification_provider}
# File tmp/rubies/ruby-3.2.0/lib/rubygems/resolver/molinillo/lib/molinillo/errors.rb, line 97
def message_with_trees(opts = {})
solver_name = opts.delete(:solver_name) { self.class.name.split('::').first }
possibility_type = opts.delete(:possibility_type) { 'possibility named' }
reduce_trees = opts.delete(:reduce_trees) { proc { |trees| trees.uniq.sort_by(&:to_s) } }
printable_requirement = opts.delete(:printable_requirement) { proc { |req| req.to_s } }
additional_message_for_conflict = opts.delete(:additional_message_for_conflict) { proc {} }
version_for_spec = opts.delete(:version_for_spec) { proc(&:to_s) }
incompatible_version_message_for_conflict = opts.delete(:incompatible_version_message_for_conflict) do
proc do |name, _conflict|
%(#{solver_name} could not find compatible versions for #{possibility_type} "#{name}":)
end
end
full_message_for_conflict = opts.delete(:full_message_for_conflict) do
proc do |name, conflict|
o = "\n".dup << incompatible_version_message_for_conflict.call(name, conflict) << "\n"
if conflict.locked_requirement
o << %( In snapshot (#{name_for_locking_dependency_source}):\n)
o << %( #{printable_requirement.call(conflict.locked_requirement)}\n)
o << %(\n)
end
o << %( In #{name_for_explicit_dependency_source}:\n)
trees = reduce_trees.call(conflict.requirement_trees)
o << trees.map do |tree|
t = ''.dup
depth = 2
tree.each do |req|
t << ' ' * depth << printable_requirement.call(req)
unless tree.last == req
if spec = conflict.activated_by_name[name_for(req)]
t << %( was resolved to #{version_for_spec.call(spec)}, which)
end
t << %( depends on)
end
t << %(\n)
depth += 1
end
t
end.join("\n")
additional_message_for_conflict.call(o, name, conflict)
o
end
end
conflicts.sort.reduce(''.dup) do |o, (name, conflict)|
o << full_message_for_conflict.call(name, conflict)
end.strip
end
@return [String] An error message that includes requirement trees,
which is much more detailed & customizable than the default message
@param [Hash] opts the options to create a message with. @option opts [String] :solver_name The user-facing name of the solver @option opts [String] :possibility_type The generic name of a possibility @option opts [Proc] :reduce_trees A proc that reduced the list of requirement trees @option opts [Proc] :printable_requirement A proc that pretty-prints requirements @option opts [Proc] :additional_message_for_conflict A proc that appends additional
messages for each conflict
@option opts [Proc] :version_for_spec A proc that returns the version number for a
possibility