Written by hand.
Test case for getting a package that has been moved to a nested module,
with a +incompatible version (and thus no go.mod file) at the root module.

-- .mod --
module example.com/split-incompatible
-- .info --
{"Version": "v2.0.0+incompatible"}
-- subpkg/subpkg.go --

Module example.com/incompatiblewithsub has an incompatible version
and a package in a subdirectory.
-- .info --
{"Version":"v2.0.0+incompatible"}
-- .mod --
module example.com/incompatiblewithsub
-- sub/sub.go --

org/codehaus/plexus/util/introspection/MethodMap.class package org.codehaus.plexus.util.introspection; public synchronized class MethodMap { private static final int MORE_SPECIFIC = 0; private static final int LESS_SPECIFIC = 1; private static final int INCOMPARABLE = 2; java.util.Map methodByNameMap; public void MethodMap(); public void add(reflect.Method); public java.util.List get(String); public reflect.Method find(String, Object[]) throws MethodMap$AmbiguousException; private static reflect.Method ge...

org/codehaus/plexus/util/introspection/MethodMap.class package org.codehaus.plexus.util.introspection; public synchronized class MethodMap { private static final int MORE_SPECIFIC = 0; private static final int LESS_SPECIFIC = 1; private static final int INCOMPARABLE = 2; java.util.Map methodByNameMap; public void MethodMap(); public void add(reflect.Method); public java.util.List get(String); public reflect.Method find(String, Object[]) throws MethodMap$AmbiguousException; private static reflect.Method ge...

org/codehaus/plexus/util/introspection/MethodMap.class package org.codehaus.plexus.util.introspection; public synchronized class MethodMap { private static final int MORE_SPECIFIC = 0; private static final int LESS_SPECIFIC = 1; private static final int INCOMPARABLE = 2; java.util.Map methodByNameMap; public void MethodMap(); public void add(reflect.Method); public java.util.List get(String); public reflect.Method find(String, Object[]) throws MethodMap$AmbiguousException; private static reflect.Method ge...

Written by hand.
Test case for getting a package that has been moved to a nested module,
with a +incompatible version (and thus no go.mod file) at the root module.

-- .mod --
module example.com/split-incompatible
-- .info --
{"Version": "v2.1.0-pre+incompatible"}
-- README.txt --

	use(c1 == c2) // ERROR "invalid operation|incompatible"
	use(c2 == c1) // ERROR "invalid operation|incompatible"
	use(c1 == c3)
	use(c2 == c2)
	use(c3 == c1)
	use(c3 == c2)

	// Same applies to named types.
	var p1 T1
	var p2 T2
	var p3 *int

	use(p1 == p2) // ERROR "invalid operation|incompatible"
	use(p2 == p1) // ERROR "invalid operation|incompatible"
	use(p1 == p3)
	use(p2 == p2)
	use(p3 == p1)

org/codehaus/plexus/util/introspection/MethodMap.class package org.codehaus.plexus.util.introspection; public synchronized class MethodMap { private static final int MORE_SPECIFIC = 0; private static final int LESS_SPECIFIC = 1; private static final int INCOMPARABLE = 2; java.util.Map methodByNameMap; public void MethodMap(); public void add(reflect.Method); public java.util.List get(String); public reflect.Method find(String, Object[]) throws MethodMap$AmbiguousException; private static reflect.Method ge...

org/codehaus/plexus/util/introspection/MethodMap.class package org.codehaus.plexus.util.introspection; public synchronized class MethodMap { private static final int MORE_SPECIFIC = 0; private static final int LESS_SPECIFIC = 1; private static final int INCOMPARABLE = 2; java.util.Map methodByNameMap; public void MethodMap(); public void add(reflect.Method); public java.util.List get(String); public reflect.Method find(String, Object[]) throws MethodMap$AmbiguousException; private static reflect.Method ge...

func (s *_TypeSet) IsMethodSet() bool { return !s.comparable && s.terms.isAll() }

// IsComparable reports whether each type in the set is comparable.
func (s *_TypeSet) IsComparable(seen map[Type]bool) bool {
	if s.terms.isAll() {
		return s.comparable
	}
	return s.is(func(t *term) bool {
		return t != nil && comparable(t.typ, false, seen, nil)
	})
}