Fix the daily notebook tests (#2952)

tests/test_notebooks.py

@@ -6,6 +6,7 @@
 import os
 from urllib.parse import urlparse
 
+import importlib_metadata
 import pytest
 import testbook
 from testbook.client import TestbookNotebookClient
@@ -21,6 +22,16 @@
     for nb in glob.glob(os.path.join(nb_root, '*.ipynb')) \
 ]
 
+try:
+    importlib_metadata.files('mosaicml')
+    package_name = 'mosaicml'
+except importlib_metadata.PackageNotFoundError:
+    try:
+        importlib_metadata.files('composer')
+        package_name = 'composer'
+    except importlib_metadata.PackageNotFoundError:
+        raise RuntimeError('Could not find the package under mosaicml or composer.')
+
 
 def patch_notebooks():
     import itertools
@@ -86,7 +97,6 @@ def modify_cell_source(tb: TestbookNotebookClient, notebook_name: str, cell_sour
         cell_source = cell_source.replace('batch_size=256', 'batch_size=64')
         cell_source = cell_source.replace('download=True', 'download=False')
 
-    package_name = os.environ.get('COMPOSER_PACKAGE_NAME', 'mosaicml')
     cell_source = cell_source.replace("pip install 'mosaicml", f"pip install '{package_name}")
     cell_source = cell_source.replace('pip install mosaicml', f'pip install {package_name}')