diff -up src/sage/interfaces/qepcad.py.orig src/sage/interfaces/qepcad.py
--- src/sage/interfaces/qepcad.py.orig	2020-10-24 11:37:59.000000000 -0600
+++ src/sage/interfaces/qepcad.py	2020-10-30 14:49:41.431265953 -0600
@@ -530,7 +530,7 @@ TESTS:
 
 Check the qepcad configuration file::
 
-    sage: with open(os.path.join(SAGE_LOCAL, 'default.qepcadrc')) as f:  # optional - qepcad
+    sage: with open('/usr/share/qepcad/default.qepcadrc')) as f:  # optional - qepcad
     ....:     f.readlines()[-1]
     'SINGULAR .../bin\n'
 
@@ -606,7 +606,6 @@ AUTHORS:
 #*****************************************************************************
 from __future__ import print_function, absolute_import
 
-from sage.env import SAGE_LOCAL
 import pexpect
 import re
 import sys
@@ -621,6 +620,8 @@ from .expect import Expect, ExpectFuncti
 from sage.interfaces.interface import AsciiArtString
 
 
+QEPCAD_LOCAL = "/usr/share/qepcad"
+
 def _qepcad_atoms(formula):
     r"""
     Return the atoms of a qepcad quantifier-free formula, as a set of strings.
@@ -650,17 +651,17 @@ def _qepcad_cmd(memcells=None):
 
         sage: from sage.interfaces.qepcad import _qepcad_cmd
         sage: s = _qepcad_cmd()
-        sage: s == 'env qe=%s qepcad '%SAGE_LOCAL
+        sage: s == 'env qe=/usr/share/qepcad qepcad '
         True
         sage: s = _qepcad_cmd(memcells=8000000)
-        sage: s == 'env qe=%s qepcad +N8000000'%SAGE_LOCAL
+        sage: s == 'env qe=/usr/share/qepcad qepcad +N8000000'
         True
     """
     if memcells is not None:
         memcells_arg = '+N%s' % memcells
     else:
         memcells_arg = ''
-    return "env qe=%s qepcad %s"%(SAGE_LOCAL, memcells_arg)
+    return "env qe=%s qepcad %s"%(QEPCAD_LOCAL, memcells_arg)
 
 _command_info_cache = None
 
@@ -685,7 +686,7 @@ def _update_command_info():
 
     cache = {}
 
-    with open(os.path.join(SAGE_LOCAL, 'bin', 'qepcad.help')) as help:
+    with open(os.path.join(QEPCAD_LOCAL, 'bin', 'qepcad.help')) as help:
         assert(help.readline().strip() == '@')
 
         while True: