Prevent hang if stderr is tty but stdout is not

Previously, the rich TUI would be enabled if either stderr or stdout is
a TTY, but this could cause syft to hang if stderr was a TTY and stdout
was not, as in some cases of redirection.

Signed-off-by: Will Murphy <will.murphy@anchore.com>

cmd/syft/internal/ui/select.go

@@ -21,7 +21,7 @@ import (
 func Select(verbose, quiet bool) (uis []clio.UI) {
 	isStdoutATty := term.IsTerminal(int(os.Stdout.Fd()))
 	isStderrATty := term.IsTerminal(int(os.Stderr.Fd()))
-	notATerminal := !isStderrATty && !isStdoutATty
+	notATerminal := !isStderrATty || !isStdoutATty
 
 	switch {
 	case runtime.GOOS == "windows" || verbose || quiet || notATerminal || !isStderrATty:

go.mod

@@ -54,7 +54,7 @@ require (
 	github.com/anchore/bubbly v0.0.0-20230712165553-812110ab0a10
 	github.com/anchore/clio v0.0.0-20230602170917-e747e60c4aa0
 	github.com/anchore/go-logger v0.0.0-20230531193951-db5ae83e7dbe
-	github.com/anchore/stereoscope v0.0.0-20230727211946-d1f3d766295e
+	github.com/anchore/stereoscope v0.0.0-20230724160817-d515761c6ca2
 	github.com/aquasecurity/go-pep440-version v0.0.0-20210121094942-22b2f8951d46
 	github.com/charmbracelet/bubbletea v0.24.2
 	github.com/charmbracelet/lipgloss v0.7.1

go.sum

@@ -106,8 +106,8 @@ github.com/anchore/go-version v1.2.2-0.20200701162849-18adb9c92b9b h1:e1bmaoJfZV
 github.com/anchore/go-version v1.2.2-0.20200701162849-18adb9c92b9b/go.mod h1:Bkc+JYWjMCF8OyZ340IMSIi2Ebf3uwByOk6ho4wne1E=
 github.com/anchore/packageurl-go v0.1.1-0.20230104203445-02e0a6721501 h1:AV7qjwMcM4r8wFhJq3jLRztew3ywIyPTRapl2T1s9o8=
 github.com/anchore/packageurl-go v0.1.1-0.20230104203445-02e0a6721501/go.mod h1:Blo6OgJNiYF41ufcgHKkbCKF2MDOMlrqhXv/ij6ocR4=
-github.com/anchore/stereoscope v0.0.0-20230727211946-d1f3d766295e h1:S6IhYpsBCpvphlHA1tN0glSG/kjVvFzC6OJuU2qW5Pc=
-github.com/anchore/stereoscope v0.0.0-20230727211946-d1f3d766295e/go.mod h1:0LsgHgXO4QFnk2hsYwtqd3fR18PIZXlFLIl2qb9tu3g=
+github.com/anchore/stereoscope v0.0.0-20230724160817-d515761c6ca2 h1:qIxlZFFZIl5YNHwxsVQ6UJG8QtkR3W0W9ozaI9JQiPk=
+github.com/anchore/stereoscope v0.0.0-20230724160817-d515761c6ca2/go.mod h1:0LsgHgXO4QFnk2hsYwtqd3fR18PIZXlFLIl2qb9tu3g=
 github.com/andreyvit/diff v0.0.0-20170406064948-c7f18ee00883/go.mod h1:rCTlJbsFo29Kk6CurOXKm700vrz8f0KW0JNfpkRJY/8=
 github.com/andybalholm/brotli v1.0.1/go.mod h1:loMXtMfwqflxFJPmdbJO0a3KNoPuLBgiu3qAvBg8x/Y=
 github.com/andybalholm/brotli v1.0.4 h1:V7DdXeJtZscaqfNuAdSRuRFzuiKlHSC/Zh3zl9qY3JY=