Fix dependencies (#244)

* Fix dependencies

* Update CHANGELOG and regenerate lock file

Author: stellasia

CHANGELOG.md

@@ -2,6 +2,14 @@
 
 ## Next
 
+### Fixed
+
+#### Dependencies
+
+- PyYAML dependency was missing and has been added.
+- Weaviate was unintentionally added as a mandatory dependency in previous version, this behavior has been reverted.
+- PyPDF and fsspec are not optional anymore so that SimpleKGPipeline examples can run out of the box (they just require the independent installation of openai python package if using OpenAI).
+
 ## 1.4.0
 
 ### Added

README.md

@@ -58,16 +58,14 @@ the extra dependencies described below:
     - **weaviate**: store vectors in Weaviate
     - **pinecone**: store vectors in Pinecone
     - **qdrant**: store vectors in Qdrant
-- **experimental**: experimental features such as the Knowledge Graph creation pipelines.
+- **experimental**: experimental features mainly related to the Knowledge Graph creation pipelines.
     - Warning: this dependency group requires `pygraphviz`. See below for installation instructions.
 
 
 Install package with optional dependencies with (for instance):
 
 ```shell
 pip install "neo4j-graphrag[openai]"
-# or
-pip install "neo4j-graphrag[openai, experimental]"
 ```
 
 #### pygraphviz

docs/source/index.rst

@@ -81,8 +81,6 @@ Extra dependencies can be installed with:
 .. code:: bash
 
     pip install "neo4j-graphrag[openai]"
-    # or
-    pip install "neo4j-graphrag[openai, experimental]"
 
 
 List of extra dependencies:
@@ -99,7 +97,7 @@ List of extra dependencies:
     - **weaviate**: store vectors in Weaviate
     - **pinecone**: store vectors in Pinecone
     - **qdrant**: store vectors in Qdrant
-- **experimental**: experimental features such as the Knowledge Graph creation pipelines.
+- **experimental**: experimental features mainly from the Knowledge Graph creation pipelines.
     - Warning: this requires `pygraphviz`. Installation instructions can be found `here <https://pygraphviz.github.io/documentation/stable/install.html>`_.