check if we are in a virtualenv when trying pip install

smodels/tools/externalPythonTools.py

@@ -36,15 +36,20 @@ def __init__(self, importname, optional=False ):
                 logger.error("could not find %s: %s" % (importname, e))
 
     def compile ( self ):
+        import sys
+        cmd = ["install",self.name]
+        if sys.prefix == sys.base_prefix:
+            # we are *not* in a virtual env, so add '--user'
+            cmd = ["install","--user",self.name]
         try:
             import pip
-            pip.main(["install","--user",self.name] )
+            pip.main( cmd )
             return
         except (ImportError,AttributeError):
             pass
         try:
             import pip._internal
-            pip._internal.main(["install","--user",self.name] )
+            pip._internal.main( cmd )
             return
         except (ImportError,AttributeError):
             pass

unittests/runCompleteTestSuite.py

@@ -102,7 +102,7 @@ def parallel_run ( verbose, testNotebooks=False, reduced=False ):
         from concurrencytest import ConcurrentTestSuite, fork_for_tests
     except ImportError as e:
         print ( "Need to install the module concurrencytest." )
-        print ( "pip install --user concurrencytest" )
+        print ( "pip install concurrencytest" )
         return
     from smodels.base import runtime