go list -e -deps -json=ImportPath,Error,DepsErrors m/a
cmp stdout want

-- want --
{
	"ImportPath": "m/c",
	"DepsErrors": [
		{
			"ImportStack": [
				"m/a",
				"m/b",
				"m/c",
				"m/a"
			],
			"Pos": "",
			"Err": "import cycle not allowed"
		}
	]
}
{
	"ImportPath": "m/b",
	"DepsErrors": [
		{
			"ImportStack": [
				"m/a",
				"m/b",
				"m/c",
				"m/a"
			],
			"Pos": "",

# Expect no panic
go list -f '{{if .DepsErrors}}{{.DepsErrors}}{{end}}' -export -e -deps
cmpenv stdout wanterr_59905

# Expect no panic (Issue 61816)
cp level1b_61816.txt level1b/pkg.go
go list -f '{{if .DepsErrors}}{{.DepsErrors}}{{end}}' -export -e -deps
cmpenv stdout wanterr_61816

-- wanterr_59905 --
[# test/main/level1a
level1a${/}pkg.go:5:2: level2x redeclared in this block
	level1a${/}pkg.go:4:2: other declaration of level2x

cd example.com

# Without -e, listing an otherwise-valid package with an unsatisfied direct import should fail.
# BUG: Today it succeeds.
go list -f '{{if .Error}}error{{end}} {{if .Incomplete}}incomplete{{end}} {{range .DepsErrors}}bad dep: {{.Err}}{{end}}' example.com/direct
! stdout ^error
stdout 'incomplete'
stdout 'bad dep: .*example.com/notfound'

# Listing with -deps should also fail.
! go list -deps example.com/direct

	p.DepsErrors = make([]*load.PackageError, 0, len(depsErrors))
	for deperr := range depsErrors {
		p.DepsErrors = append(p.DepsErrors, deperr)
	}
	// Sort packages by the package on the top of the stack, which should be
	// the package the error was produced for. Each package can have at most
	// one error set on it.
	sort.Slice(p.DepsErrors, func(i, j int) bool {
		stki, stkj := p.DepsErrors[i].ImportStack, p.DepsErrors[j].ImportStack

cd example.com

# Without -e, listing an otherwise-valid package with an unsatisfied direct import should fail.
# BUG: Today it succeeds.
go list -f '{{if .Error}}error{{end}} {{if .Incomplete}}incomplete{{end}} {{range .DepsErrors}}bad dep: {{.Err}}{{end}}' example.com/direct
! stdout ^error
stdout 'incomplete'
stdout 'bad dep: .*example.com[/\\]notfound'

# Listing with -deps should also fail.
! go list -deps example.com/direct

# a clear error in module mode.

! go list cmd/unknown
stderr '^package cmd/unknown is not in std \('$GOROOT'[/\\]src[/\\]cmd[/\\]unknown\)$'

go list -f '{{range .DepsErrors}}{{.Err}}{{end}}' x.go
stdout '^package cmd/unknown is not in std \('$GOROOT'[/\\]src[/\\]cmd[/\\]unknown\)$'

-- x.go --
package x

	// Error information
	// Incomplete is above, packed into the other bools
	Error      *PackageError   `json:",omitempty"` // error loading this package (not dependencies)
	DepsErrors []*PackageError `json:",omitempty"` // errors loading dependencies, collected by go list before output

	// Test information
	// If you add to this list you MUST add to p.AllFiles (below) too.

//
//	    // Error information
//	    Incomplete bool            // this package or a dependency has an error
//	    Error      *PackageError   // error loading package
//	    DepsErrors []*PackageError // errors loading dependencies
//	}
//
// Packages stored in vendor directories report an ImportPath that includes the
// path to the vendor directory (for example, "d/vendor/p" instead of "p"),