build: Add packages.txt to capture graphviz as external dependency

LordFckHelmchen · Jun 16, 2022 · a65398c · a65398c
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diff --git a/README.md b/README.md
@@ -1,5 +1,7 @@
 # Wrath & Glory Space Hulk Generator
 
+[![Streamlit App](https://static.streamlit.io/badges/streamlit_badge_black_white.svg)](https://share.streamlit.io/LordFckHelmchen/wrath-and-glory-space-hulk-generator/[branch name]/[app path])
+
 The _Wrath & Glory Space Hulk Generator_ contains a random map generator for [Cubicle7](https://cubicle7games.com)'s
 Warhammer
 40k role-playing
@@ -25,8 +27,9 @@ An initial analysis of the use cases for the generator is given in [USE_CASES.md
 
 Currently, there is no stand-alone installation. To locally use the project, e.g. for making code changes, 
 
-1. Install the repositories via [poetry](https://python-poetry.org) from [pyproject.toml](pyproject.toml)
-2. Run the app via `streamlit run streamlit_app.py` from the repository root
+1. Install the external dependencies from [packages.txt](packages.txt) (e.g. the graphviz backend)
+2. Install the Python dependencies via [poetry](https://python-poetry.org) from [pyproject.toml](pyproject.toml)
+3. Run the app via `streamlit run streamlit_app.py` from the repository root
 
 ## Contributing
 

diff --git a/packages.txt b/packages.txt
@@ -0,0 +1 @@
+graphviz