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

--- ngspice-37/src/frontend/inp.c	2022-05-17 18:00:52.000000000 +0800
+++ ngspice-37.mod/src/frontend/inp.c	2022-06-16 20:41:04.550164798 +0800
@@ -1697,7 +1697,7 @@
             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);