pin down version in case same version is used in test and specified in the req. file

scripts/modify_requirements_add_max_version.py

@@ -9,7 +9,7 @@ based on the currently installed version of a package
 """
 
 # requirements file of the project
-req_filepath = "requirements-conda.txt"
+req_filepath = "../requirements-conda.txt"
 
 # file generated by 'conda env export > current_env.yml'
 # could also be done with subprocess
@@ -43,7 +43,7 @@ with open(req_filepath) as fp:
         # in case there is no version specifier in the requirements
         if str(req.specifier) == "":
             spec = SpecifierSet("<=" + deps[req.name])
-            req.specifier = req.specifier & spec
+            req.specifier = spec
             print(str(req))
         else:
             req_version = Version(str(req.specifier).strip("~=<>"))
@@ -56,6 +56,6 @@ with open(req_filepath) as fp:
 
             # in case the same version is specified in req. file and used in current env,
             else:
-                spec = SpecifierSet("<=" + deps[req.name])
+                spec = SpecifierSet("==" + deps[req.name])
                 req.specifier = spec
                 print(str(req))