termux-packages/packages/ngspice/src-frontend-inp.c.patch

--- a/src/frontend/inp.c
+++ b/src/frontend/inp.c
@@ -1653,7 +1653,7 @@
             if (Def_Editor && *Def_Editor)
                 editor = Def_Editor;
             else
-                editor = "/usr/bin/vi";
+                editor = "@TERMUX_PREFIX@/bin/vi";
         }
     }
     int len = snprintf(buf, BSIZE_SP - 1, "%s %s", editor, filename);