2 files changed, 27 insertions, 11 deletions

diff --git a/pyecsca/sca/target/__init__.py b/pyecsca/sca/target/__init__.py
index f1555dd..bc9a54d 100644
--- a/pyecsca/sca/target/__init__.py
+++ b/pyecsca/sca/target/__init__.py
@@ -7,8 +7,9 @@ from .simpleserial import *
 from .binary import *
 from .flash import *
 
-has_chipwhisperer = False
-has_pyscard = False
+has_chipwhisperer: bool = False
+has_pyscard: bool = False
+has_leia: bool = False
 
 try:
     import chipwhisperer
@@ -24,9 +25,20 @@ try:
 except ImportError:  # pragma: no cover
     pass
 
+try:
+    import smartleia
+
+    has_leia = True
+except ImportError:  # pragma: no cover
+    pass
+
+from .ectester import ECTesterTarget  # noqa
+
 if has_pyscard:
     from .PCSC import *
-    from .ectester import ECTesterTarget
+
+if has_leia:
+    from .leia import *
 
 if has_chipwhisperer:
     from .chipwhisperer import *
diff --git a/pyecsca/sca/target/ectester.py b/pyecsca/sca/target/ectester.py
index 74c4a95..f1a3639 100644
--- a/pyecsca/sca/target/ectester.py
+++ b/pyecsca/sca/target/ectester.py
@@ -10,8 +10,7 @@ from typing import Optional, Mapping, List, Union
 from public import public
 
 from .ISO7816 import CommandAPDU, ResponseAPDU, ISO7816, ISO7816Target, CardProtocol, CardConnectionException
-from .leia import LEIATarget
-from .PCSC import PCSCTarget
+from . import has_leia, has_pyscard
 from ...ec.model import ShortWeierstrassModel
 from ...ec.params import DomainParameters
 from ...ec.point import Point
@@ -985,11 +984,16 @@ class ECTesterTarget(ISO7816Target, ABC):  # pragma: no cover
         return RunModeResponse(resp)
 
 
-@public
-class ECTesterTargetPCSC(ECTesterTarget, PCSCTarget):
-    pass
+if has_pyscard:
+    from .PCSC import PCSCTarget
 
+    @public
+    class ECTesterTargetPCSC(ECTesterTarget, PCSCTarget):
+        pass
 
-@public
-class ECTesterTargetLEIA(ECTesterTarget, LEIATarget):
-    pass
+if has_leia:
+    from .leia import LEIATarget
+
+    @public
+    class ECTesterTargetLEIA(ECTesterTarget, LEIATarget):
+        pass