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-rw-r--r--docs/development/contributing_guide.md33
1 files changed, 28 insertions, 5 deletions
diff --git a/docs/development/contributing_guide.md b/docs/development/contributing_guide.md
index 56cf4ba81e..f5ba55afb7 100644
--- a/docs/development/contributing_guide.md
+++ b/docs/development/contributing_guide.md
@@ -22,6 +22,9 @@ on Windows is not officially supported.
 
 The code of Synapse is written in Python 3. To do pretty much anything, you'll need [a recent version of Python 3](https://www.python.org/downloads/). Your Python also needs support for [virtual environments](https://docs.python.org/3/library/venv.html). This is usually built-in, but some Linux distributions like Debian and Ubuntu split it out into its own package. Running `sudo apt install python3-venv` should be enough.
 
+A recent version of the Rust compiler is needed to build the native modules. The
+easiest way of installing the latest version is to use [rustup](https://rustup.rs/).
+
 Synapse can connect to PostgreSQL via the [psycopg2](https://pypi.org/project/psycopg2/) Python library. Building this library from source requires access to PostgreSQL's C header files. On Debian or Ubuntu Linux, these can be installed with `sudo apt install libpq-dev`.
 
 Synapse has an optional, improved user search with better Unicode support. For that you need the development package of `libicu`. On Debian or Ubuntu Linux, this can be installed with `sudo apt install libicu-dev`.
@@ -30,9 +33,6 @@ The source code of Synapse is hosted on GitHub. You will also need [a recent ver
 
 For some tests, you will need [a recent version of Docker](https://docs.docker.com/get-docker/).
 
-A recent version of the Rust compiler is needed to build the native modules. The
-easiest way of installing the latest version is to use [rustup](https://rustup.rs/).
-
 
 # 3. Get the source.
 
@@ -53,6 +53,11 @@ can find many good git tutorials on the web.
 
 # 4. Install the dependencies
 
+
+Before installing the Python dependencies, make sure you have installed a recent version
+of Rust (see the "What do I need?" section above). The easiest way of installing the
+latest version is to use [rustup](https://rustup.rs/).
+
 Synapse uses the [poetry](https://python-poetry.org/) project to manage its dependencies
 and development environment. Once you have installed Python 3 and added the
 source, you should install `poetry`.
@@ -76,7 +81,8 @@ cd path/where/you/have/cloned/the/repository
 poetry install --extras all
 ```
 
-This will install the runtime and developer dependencies for the project.
+This will install the runtime and developer dependencies for the project.  Be sure to check
+that the `poetry install` step completed cleanly.
 
 ## Running Synapse via poetry
 
@@ -84,14 +90,31 @@ To start a local instance of Synapse in the locked poetry environment, create a
 
 ```sh
 cp docs/sample_config.yaml homeserver.yaml
+cp docs/sample_log_config.yaml log_config.yaml
 ```
 
-Now edit homeserver.yaml, and run Synapse with:
+Now edit `homeserver.yaml`, things you might want to change include:
+
+- Set a `server_name`
+- Adjusting paths to be correct for your system like the `log_config` to point to the log config you just copied
+- Using a [PostgreSQL database instead of SQLite](https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#database)
+- Adding a [`registration_shared_secret`](https://matrix-org.github.io/synapse/latest/usage/configuration/config_documentation.html#registration_shared_secret) so you can use [`register_new_matrix_user` command](https://matrix-org.github.io/synapse/latest/setup/installation.html#registering-a-user).
+
+And then run Synapse with the following command:
 
 ```sh
 poetry run python -m synapse.app.homeserver -c homeserver.yaml
 ```
 
+If you get an error like the following:
+
+```
+importlib.metadata.PackageNotFoundError: matrix-synapse
+```
+
+this probably indicates that the `poetry install` step did not complete cleanly - go back and
+resolve any issues and re-run until successful.
+
 # 5. Get in touch.
 
 Join our developer community on Matrix: [#synapse-dev:matrix.org](https://matrix.to/#/#synapse-dev:matrix.org)!