Enable export of environment variables plus lobster run as a command (#…

…326)

* Update jobs.py

* pre-commit auto-fixes

* refactor

* support both str and Sequence[str] in LobsterJob.run

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Co-authored-by: Janosh Riebesell <janosh.riebesell@gmail.com>

custodian/lobster/jobs.py

@@ -2,6 +2,7 @@
 
 import logging
 import os
+import shlex
 import shutil
 import subprocess
 
@@ -78,16 +79,17 @@ def setup(self, directory="./"):
 
     def run(self, directory="./"):
         """Runs the job."""
-        cmd = self.lobster_cmd
+        # join split commands (e.g. from atomate and atomate2)
+        cmd = self.lobster_cmd if isinstance(self.lobster_cmd, str) else shlex.join(self.lobster_cmd)
 
-        logger.info(f"Running {' '.join(cmd)}")
+        logger.info(f"Running {cmd}")
 
         with (
             zopen(os.path.join(directory, self.output_file), "w") as f_std,
+            # use line buffering for stderr
             zopen(os.path.join(directory, self.stderr_file), "w", buffering=1) as f_err,
         ):
-            # use line buffering for stderr
-            return subprocess.Popen(cmd, cwd=directory, stdout=f_std, stderr=f_err)  # pylint: disable=R1732
+            return subprocess.run(cmd, stdout=f_std, stderr=f_err, shell=True, check=False)
 
     def postprocess(self, directory="./"):
         """Will gzip relevant files (won't gzip custodian.json and other output files from the cluster)."""