Change the similarity package to be optional

Author: davidmezzetti

.github/workflows/build.yml

@@ -35,7 +35,7 @@ jobs:
         run: |
           pip install -U pip
           pip install -U wheel coverage coveralls
-          pip install .
+          pip install . txtai[similarity]
           python --version
           make data coverage
 

README.md

@@ -114,7 +114,7 @@ embeddings:
 
 ```
 # Install API extra
-pip install codequestion[api]
+pip install txtai[api]
 
 # Start API
 CONFIG=app.yml uvicorn "txtai.api:app"
@@ -218,7 +218,7 @@ python -m codequestion.etl.stackexchange.execute stackexchange
 
 This will create the file stackexchange/questions.db
 
-4.) __OPTIONAL:__ Build word vectors - only necessary if using a word vectors model
+4.) __OPTIONAL:__ Build word vectors - only necessary if using a word vectors model. If using word vector models, make sure to run `pip install txtai[similarity]`
 
 ```
 python -m codequestion.vectors stackexchange/questions.db

setup.py

@@ -33,9 +33,8 @@
         "rich>=12.0.1",
         "scipy>=1.4.1",
         "tqdm>=4.48.0",
-        "txtai[graph,similarity]>=5.0.0",
+        "txtai[graph]>=5.0.0",
     ],
-    extra_requires={"api": ["txtai[api]>=5.0.0"]},
     classifiers=[
         "License :: OSI Approved :: Apache Software License",
         "Operating System :: OS Independent",