Merge branch 'enh/m1' into 'master'

Enh/m1

See merge request fsl/conda/manifest-rules!38

manifest_rules/__init__.py

 #!/usr/bin/env python
 
 
-__version__ = '0.7.0'
+__version__ = '0.7.1'

manifest_rules/generate_environment_files.py

 #!/usr/bin/env python
 #
 # Generate FSL conda environment files from fsl-release.yml
+#
+# An environment file is created for all platforms and CUDA versions.
+# Platform identifiers are taken from the FSLCONDA_PLATFORMS environment
+# variable if set, or taken from the entries in the miniconda field
+# from fsl-release.yml.
+#
+# CUDA environment files are only generated for linux-64.
 
 
 import itertools  as it
@@ -80,9 +87,14 @@ def generate_variants(release_info):
     """Generate a list of (platform, cudaver) pairs for which an environment
     file should be generated. For non-CUDA environments, cudaver will be None.
     """
-    cudas     = [None] + list(release_info['cuda'])
-    platforms = list(release_info['miniconda'].keys())
-    variants  = list(it.product(platforms, cudas))
+    cudas      = [None] + list(release_info['cuda'])
+    platforms  = os.environ.get('FSLCONDA_PLATFORMS', None)
+    if platforms is None:
+        platforms = list(release_info['miniconda'].keys())
+    else:
+        platforms = platforms = platforms.split(',')
+
+    variants   = list(it.product(platforms, cudas))
 
     # CUDA builds are only supported
     # on linux-64 at this time