Only use gpgconf result if the file exists (#1903)

RELEASE_NOTES=n/a

Signed-off-by: Dominik Schulz <[email protected]>

internal/backend/crypto/gpg/cli/binary_others.go

@@ -6,6 +6,7 @@ import (
 	"os/exec"
 
 	"github.com/gopasspw/gopass/pkg/debug"
+	"github.com/gopasspw/gopass/pkg/fsutil"
 	"github.com/gopasspw/pinentry/gpgconf"
 )
 
@@ -16,8 +17,8 @@ func detectBinary(name string) (string, error) {
 	}
 	// try to get the proper binary from gpgconf(1)
 	p, err := gpgconf.Path("gpg")
-	if err != nil || p == "" {
-		debug.Log("gpgconf failed, falling back to path lookup: %q", err)
+	if err != nil || p == "" || !fsutil.IsFile(p) {
+		debug.Log("gpgconf failed (%q), falling back to path lookup: %q", p, err)
 		// otherwise fall back to the default and try
 		// to look up "gpg"
 		return exec.LookPath("gpg")