Allow parallel processing only on Linux

src/repurpose/img2ts.py

@@ -1,3 +1,6 @@
+import sys
+import warnings
+
 from repurpose.process import parallel_process_async, idx_chunks
 import pynetcf.time_series as nc
 from pygeogrids.grids import CellGrid
@@ -193,7 +196,12 @@ def __init__(self,
  self.timekey = None # to be set when reading data
 
  # Multiprocessing only used when n_proc > 1 chosen
- self.n_proc = n_proc
+ if sys.platform != "linux" and n_proc != 1:
+ warnings.warn("Parallel processing is for now only supported "
+ "on Linux. Setting `n_proc=1`.")
+ self.n_proc = 1
+ else:
+ self.n_proc = n_proc
 
  def _read_image(self, date, target_grid):
  """