Только в asymptote-2.67.orig: .pc
Index: asymptote-2.67/settings.cc
===================================================================
--- asymptote-2.67.orig/settings.cc
+++ asymptote-2.67/settings.cc
@@ -100,13 +100,13 @@ string defaultPSViewer="open";
 string defaultPDFViewer="open";
 string defaultHTMLViewer="open";
 #else
-string defaultPSViewer="gv";
-string defaultPDFViewer="acroread";
-string defaultHTMLViewer="google-chrome";
+string defaultPSViewer="xdg-open";
+string defaultPDFViewer="xdg-open";
+string defaultHTMLViewer="xdg-open";
 #endif
 string defaultGhostscript="gs";
 string defaultGhostscriptLibrary="";
-string defaultDisplay="display";
+string defaultDisplay="xdg-open";
 string defaultAnimate="animate";
 void queryRegistry() {}
 const string dirsep="/";