chore: update envvar declarations (#71)

Signed-off-by: vsoch <vsoch@users.noreply.github.com>
Co-authored-by: vsoch <vsoch@users.noreply.github.com>
Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

Author: vsoch

snakemake_interface_executor_plugins/executors/real.py

@@ -125,16 +125,12 @@ def common_settings(self):
         return self.workflow.executor_plugin.common_settings
 
     def get_envvar_declarations(self):
-        if self.common_settings.pass_envvar_declarations_to_cmd:
-            defs = " ".join(
-                f"{var}={repr(value)}" for var, value in self.envvars().items()
-            )
-            if defs:
-                return f"export {defs} &&"
-            else:
-                return ""
-        else:
-            return ""
+        declaration = ""
+        envars = self.envvars()
+        if self.common_settings.pass_envvar_declarations_to_cmd and envars:
+            defs = " ".join(f"{var}={value!r}" for var, value in envars)
+            declaration = f"export {defs} &&"
+        return declaration
 
     def get_job_exec_prefix(self, job: JobExecutorInterface):
         return ""