--- a/eric7/PipInterface/Pip.py	Sun Mar 13 12:46:57 2022 +0100
+++ b/eric7/PipInterface/Pip.py	Sun Mar 13 15:20:26 2022 +0100
@@ -771,6 +771,49 @@
         
         return result
     
+    def getFrozenPackages(self, envName, localPackages=True, usersite=False,
+                          requirement=None):
+        """
+        Public method to get the list of package specifiers to freeze them.
+        
+        @param envName name of the environment to get the package specifiers
+            for
+        @type str
+        @param localPackages flag indicating to get package specifiers for
+            local packages only
+        @type bool
+        @param usersite flag indicating to get package specifiers for packages
+            installed in user-site only
+        @type bool
+        @param requirement name of a requirements file
+        @type str
+        @return list of package specifiers
+        @rtype list of str
+        """
+        specifiers = []
+        
+        if envName:
+            interpreter = self.getVirtualenvInterpreter(envName)
+            if interpreter:
+                args = [
+                    "-m", "pip",
+                    "freeze",
+                ]
+                if localPackages:
+                    args.append("--local")
+                if usersite:
+                    args.append("--user")
+                if requirement and os.path.exists(requirement):
+                    args.append("--requirement")
+                    args.append(requirement)
+                
+                success, output = self.runProcess(args, interpreter)
+                if success and output:
+                    specifiers = [spec.strip() for spec in output.splitlines()
+                                  if spec.strip()]
+        
+        return specifiers
+    
     #######################################################################
     ## Cache handling methods below
     #######################################################################